Web of Science and Scopus: A comparative review of content and searching capabilities

Tags: WOS, Scopus database, cited references, Scopus, citation report, The Charleston Advisor, Articles, Web of Science, WOS Scopus Diff, AFFIL, conference proceedings, citation counts, Science Citation Index, search results, Social Science Citation Index, databases, database, WOS conference proceedings, cited reference, Science Direct, SSCI, WOS Conference, HHHH Scopus, Department affiliation, American Chemical Society, journal articles, technical journals, Fayetteville Web of Science, social sciences journals, Citation Index, Department Chemistry or Chemical Engineering Mechanical Engineering food Science Psychology Poultry Science Physics Economics Query Scopus
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Advisor Reviews­­Comparative Review Web of Science and Scopus: A Comparative Review of Content and Searching Capabilities Date of Review: May 19, 2009
Web of Science Composite Score: Scopus Composite Score:
HHHH 1/4 HHHH
Reviewed By: Lutishoor Salisbury Librarian/University Professor Head, Chemistry and Biochemistry Library University of Arkansas, Fayetteville
Web of Science (WOS) is a multidisciplinary database of abstracting and citation data and consists of six databases: Science Citation Index Expanded, which covers over 7,100 major journals across 150 disciplines and goes back to 1900; Social Science Citation Index, which covers over 2,100 journals across 50 social science disciplines, as well as 3,500 scientific and technical journals going back to 1956; Arts and Humanities Citation Index, which covers over 1,200 journals, as well as selected items from over 6,000 scientific and social sciences journals; Conference Proceedings Citation Index, which covers over 110,000 journals and book-based proceedings; Index Chemicus; and Current Chemical Reactions.1 WOS offers cover-to-cover indexing of journals. EndNote Web is fully integrated and freely available to any WOS user. Users can send references to EndNote Web after a search and share their saved folders with others. WOS includes tools to track and analyze research output. Scopus, like WOS, is a database of abstracting and citation data. It includes information from over 16,000 peer-reviewed journals (life sciences > 4,100 titles; health sciences > 6,700 titles; physical sciences > 7,100 titles, and social sciences > 4,300 titles including 1,200 open access journals). It also covers 520 conference proceedings, 650 trade publications, and 315 book series. Scopus includes Web pages (431 million), patents (23 million from five patent offices), "Articles-in-Press" (3,000 journals), and other selected sources (institutional repositories, digital archives, and special subject collections), as well as 100% coverage of Medline material. The broadest coverage in the Scopus database is available in the areas of scientific, technical, medical, and social sciences literature.2 Scopus also includes tools to track and analyze research output.
This review builds on three recent studies done by Goodman and Deis in 20053 and 2007,4 respectively, and Fingerman's review done in 2006.5 Goodman and Deis suggest that these databases are complementary and that a library that can afford both should buy both. Since many small- and medium- sized libraries may not be able to afford to subscribe to both of these products, this review will provide in-depth comparison of the content to aid in the selection of one or both. In particular, this review will Compare and contrast the content of the two databases by comparing (a) the comprehensiveness in coverage of 110 journals over a broad spectrum of fields to look at their completeness in indexing and their timeliness in updating; (b) the retrieval of searches based on seven departmental affiliations from one university, highlighting the number of articles retrieved, their citation counts and H-indexes (the value of H is equal to the number of papers [N] that have N or more citations); (c) the citation counts for 10 journal articles; and (d) publication counts from six universities. The usefulness of both databases in studying an institution's research output and aiding in collection assessment/development activities will be discussed. The article will also provide methods that might be useful for extracting information from these databases that could be useful for collection development purposes. In addition, it will focus on the ease of use and understanding of the databases for the average user, capabilities available for searching, and the unique features each offers. For this analysis, I used the Science Citation Index, Social Science Citation Index, and the Arts and Humanities Citation Index on the Web of Knowledge interface (WOS) and Scopus.
"At a Glance" Comparative Review Scores The maximum number of stars in each category is five. Web of Science (Thomson)
Coverage and Currency Citation Counts Ease of Use, Search Refinement/Analysis of Results Collection Development Activity Average
HHHHH HHHH HHHHH HHH HHHH 1/4
Scopus (Elsevier) HHHH HHHH HHHHH HHH HHHH
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CritiCaL EvaLuatiOn (1) Journal Coverage in Both Databases One hundred and ten journal titles [10 from the American Chemical Society (ACS) journals, 13 from the BioOne packages, 65 titles from the JSTOR collections (10 each from the sections: Language and Literature, Mathematics, Philosophy, and Statistics, 9 from Sociology, and 8 each from Education and Geography), 10 titles from Science Direct, 9 from Wiley journals, and Nature, Science, and The Proceedings of the National Academy of Science (PNAS)], were used to compare coverage, currency, citation counts and H-indexes in the two databases for the period 1996­2009. All checking in the two databases was done on March 19­20, 2009. In WOS, the journals were searched from the Publications Name Index and limited to 1996­2009. Since the Limit Date is the date when the record was created in this database and not the Publication date, it was essential to analyze the results of each search by the Publication Date to preclude records that do not have the publication years, 1996­2009. The years covered for each title for the 14 years under study were recorded; the number of articles identified for 1996­2008 and 2009 were recorded in two separate columns in order to identify currency of updates. In Scopus, the Source Title was used to start the search, and the relevant titles were selected from the faceted display under Source Title and the numbers recorded. The summary results presented in Table 1 show that for the years 1996­2008 Scopus has fewer articles than WOS in all but one case (i.e., for the Wiley journals). The difference in the number of articles is more pronounced in Language and Literature (88.27%), Education (73.54%), Sociology (46.68%) and for the BioOne titles (29.05%). Overall, Scopus has 10.79 percent fewer articles than does WOS. For a complete listing and in-depth analysis of the journals that were used for this study and the analysis by titles and package, see Table 2a-2e.
The currency of the databases was evaluated by checking the number of articles with a 2009 publication date in each one. Overall, the results presented in Table 1 show that in all but two cases (Science Direct and BioOne titles) WOS had more recent articles. Most noticeable is the difference (77.74%) in number of articles from the ACS package indexed in WOS but not indexed in Scopus for 2009. (A) ACS AND BIOONE PACkAgES Of the 23 journals from the ACS and BioOne packages that were studied (Table 2a), all the titles are indexed in both databases. Of those titles, 15 have the same years of coverage in both databases; 5 titles in WOS had one more year of coverage, mainly for 2009; and 3 titles in Scopus had more years of information (i.e., 5 years combined). However, for the years 1996­2008, WOS had 8,511 more articles than Scopus, and for 2009, WOS included a total of 1,444 (approximately 3 times) more articles. Summary: The number of years covered is about the same in both databases, but WOS has more articles indexed and is more current. (B) JSTOR­­MAThEMATICS AND STATISTICS Of the 19 journals shown in Table 2b, 2 titles are not covered in either of the databases, 10 titles have the same years of coverage, Scopus has 2 titles with a smaller number of years (i.e., 4 years combined), while WOS has 5 titles with a lesser number of years (i.e., 11 years combined) that are indexed. Even though WOS had 7 years less information in its database, it has 1,259 more articles than Scopus for 1996­2008. Both WOS and Scopus had 7 titles, each updated for 2009. Summary: Overall, it seems that both WOS and Scopus are about equal in the number of years of coverage and currency, but WOS has more articles indexed in the database.
TABlE 1 Summary Data Package ACS BioOne JSTOR Education JSTOR Geography JSTOR Language & Literature JSTOR Mathematics JSTOR Philosophy JSTOR Sociology JSTOR Statistics Science Direct Titles Wiley Misc. (Nature, Science, PNAS) Totals
No. Titles 10 13 8 8 10 10 10 9 10 10 9 3 110
No. of Articles [1996­2008]
WOS 140,349 21,145 4,410 4,979 8,118 10,388 8,777 8,168 10,416 39,219 29,892 112,468 398,329
Scopus 137,981 15,002 1,167 2,456 952 9,667 2,475 4,355 9,685 33,569 30,376 107,646 355,331
% Diff -1.69 -29.05 -73.54 -50.67 -88.27 -6.94 -71.8 -46.68 -7.02 -14.41 1.62 -4.29 -10.79
No. of Articles [2009]
WOS 1,864 212 20 69 33 153 79 35 50 669 619 1,527 5,330
Scopus 415 217 10 20 6 70 24 25 30 1,053 480 1,242 3,592
% Diff -77.74 2.36 -50 -71.01 -81.82 -54.25 -69.62 -28.57 -40 57.4 -22.46 -18.66 -32.61
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TABlE 2A Chemistry and Biology
Package
Journal Titles
Years Coverage [1996­2009]
No of Articles [1996­2008]
No of Articles [2009]
WOS Scopus # Diff WOS Scopus # Diff WOS Scopus # Diff
ACS Journals
Accounts of Chemical Research 1996­2009 1996­2008 1
1448 1,424 24
Analytical Chemistry
1996­2009 1996­2009 0 13,643 13,340 303
Biochemistry
1996­2009 1996­2009 0 23,962 23,115 847
Energy & Fuels
1996­2009 1996­2008 1
3,650 3,622 28
Industrial & Engineering Chemistry Research
1996­2009 1996­2008 1 10,954 10,823 131
Inorganic chemistry
1996­2009 1996­2009 0 15,527 15,139 388
Journal of Agricultural and Food 1996­2009 1996­2009 0 15,517 15,453 64 Chemistry
Journal of Medicinal Chemistry 1996­2009 1996­2009 0
8,703 8,710
-7
Journal of the American Chemical Society
1996­2008 1996­2008 0 35,588 35,258 330
Organometallics
1996­2009 1996­2008 1 11,357 11,097 260
BioOne Journals AMBIO: A Journal of the Human 1996­2009 1996­2008 1 Environment
1,409 1,366 43
American Biology Teacher
1996­2009 1996­2009 0
1,497 1,077 420
Annals of the Entomological
1996­2009 1996­2009 0
1,557 1,557
0
Society of America
Applied Vegetation Science
2001-2008 1998-2008 -3
276
348 -72
Economic Botany
1996­2009 1996­2009 0
616
575 41
Evolution
1996­2009 1996­2009 0
3,089 3,066 23
Integrative and Comparative Biology
2002-2008 1996, 2002- -1 2008
5,649
626 5,023
Journal of Vector Ecology
1996­2008 1996­2008 0
474
441 33
Mountain Research and Development
1996­2008 1996­2008 0
742
606 136
Paleobiology
1996­2009 1996­2009 0
522
491 31
Photochemistry and Photobiology
1996­2009 1996­2009 0
3,385 2,992 393
Transactions of the American Entomological Society
1996­2008 1996­2009 -1
289
260 29
Weed Science
1996­2009 1996­2009 0
1,640 1,597 43
Total
161,494 152,983 8,511
37 283 178 166 332 287 231 134 216 10 24 21 8 67 9 52 21 2,076
37
105 178
87
91
166
332
51 236 109 122
63
71
0
216 10
12
12
21
0
4
4
67
0
0
0 0
9
0
83 -31
0
21
0
632 1,444
(C ) JSTOR­­EDUCATION, gEOgRAPhY, lANgUAgE, AND lITERATURE Of the 26 journals shown in Table 2c, 3 of the same titles are not covered in either of the databases, and 7 of the same titles have equal number of years of coverage in the databases. Of the remaining 14
titles covered in both databases, WOS has a total of 72 more years of data than Scopus. Overall, the WOS database has 13,104 more articles than in the Scopus database. For the journals covered in both databases, WOS has more journals updated in 2009. Overall for this set of journals, WOS has better coverage and is timelier.
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TABlE 2(B ) - Mathematics and Statistics
Package JSTOR Mathematics JSTOR Statistics
Journal Titles The College Mathematics Journal Econometrica The Journal of Symbolic Logic Mathematics Magazine Mathematics of Computation SIAM Journal on Applied Mathematics SIAM Journal on Numerical Analysis SIAM Review Transactions of the American Mathematical Society The American Statistician The Annals of Applied Probability The Annals of Probability The Annals of Statistics Journal of the Royal Statistical Society Series C Applied Statistics Biometrics Biometrika Journal of the American Statistical Association Statistical Science Journal of the Royal Statistical Society Series D The Statistician Total
Years Coverage [1996­2009] No. of Articles [1996­2008]
WOS
Scopus Diff WOS Scopus Diff
0
0
1996­2009 1996­2009
0
769
757 12
1996­2008 1996­2008
0 1,149 1,137 12
0
0
1996­2009 1996­2009
0 1,414 1,400 14
1996­2008 1996­2009 -1 1,259 1,219 40
1996­2008 1996­2009 -1 1,608 1,577 31
1996­2009 1996­2009 1996­2009 1996­2006
0
534
488 46
3 3,047 2,487 560
1996­2008 1998-2008 1996­2008 1996­2009 1997-2009
1996­2008 1996­2008 1996­2008 1996­2008 1996­2009
0 1,031
795 236
-2
724
791 -67
0 1,047 1,020 27
1 1,408 1,261 147
-1
447
505 -58
1996­2008 1996­2009 1996­2008
1996­2008 1996­2009 1996­2008
1996­2008 1996­2008 1996­1997 1996­2003
0 2,020 1,955 65 0 1,070 1,049 21 0 1,955 1,657 298
0
461
406 55
-6
106
286 -180
20,049 18,790 1,259
No. of Articles [2009] WOS Scopus Diff 0
13
17 -4
0
0
62
32 30
6 -6
5 -5
6
10 -4
64
64
0
0
0
20
20
9
9
0
0
21
21
0
0
0 0
195
100 95
D) JSTOR­­PhIlOSOPhY AND SOCIOlOgY Of the 19 titles listed in Table 2(d), one is not indexed in WOS and 2 are not indexed in Scopus. Of the remaining 16 titles that are indexed in both, 11 titles have the same number of years of coverage. However, 5 titles have a total of 23 years more coverage in WOS. WOS has 10,122 more articles indexed for 1996­2008 than Scopus. Both databases seem to have the same pattern in updating their information for 2009. For titles indexed in both databases, WOS has more years of coverage and has considerably more articles than Scopus. (E) SCIENCE DIRECT, WIlEY, PNAS, NATURE, AND SCIENCE Of the 22 titles shown in Table 2(e), 2 titles are not indexed in WOS, while 20 titles have the same years of coverage in both databases. For these 20 titles WOS had more articles indexed from 11 of them, while Scopus had more articles indexed from 7 of them. Two titles had the same number of articles in both databases. Overall, WOS had 10,023 more articles indexed for these years even though two of the titles were not covered in the database. Both databases were updated in 2009, but WOS had 40 more articles indexed with a 2009 publication date. WOS seems to be more comprehensive in coverage. Both databases seem to update this set of journals on a timely basis.
OvERAll SUMMARY fOR JOURNAlS For all areas described and shown in Tables 2a-2e, WOS had more articles indexed and in 3 of the 5 areas had more current citations. It is obvious that WOS is more comprehensive in coverage even when both databases covered the same years for a title. This finding differs from that of Goodman and Deis (2007), who found that Scopus seems a little better in comprehensiveness of coverage. (2) Department affiliation Search­­analysis of Citation Counts and H-index In WOS, affiliation searching can be done from the Search menu as well as from the Advanced Search. However, there is no index for author affiliation. There is a listing of abbreviations for common address terms to be used when entering address terms in Search or Advanced Search. It also has listings of abbreviations for all the states and for nineteen countries. If a standardized listing of institutions is provided in the database, it will certainly make identifying and retrieving relevant information much easier. Using the listing of abbreviations provided to create a search is clumsy at best for busy researchers. However, if one can persevere, very precise retrieval can be obtained by executing a search in the address field and by using the "same"
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TABlE 2 (C) - Education, geography, language and literature
Package JSTOR Education
Journal Titles College Composition and Communication College English History of Education Quarterly
The History Teacher The Journal of Higher Education The Journal of Negro Education
Sociology of Education Journal of Blacks in Higher Education JSTOR geography Annals of the Association of American Geographers Economic Geography Geografiska Annaler. Series A, Physical Geography Geografiska Annaler. Series B, human geography The Geographical Journal Geographical Review Journal of the Royal Geographical Society of London Transactions of the Institute of British Geographers JSTOR language African American Review and literature American Literature Contemporary Literature Feminist Studies Italica Japanese Language and Literature Poetics Today Shakespeare Quarterly The Modern Language Journal
Twentieth Century Literature Total
Years Coverage [1996­2009]
WOS
Scopus Diff
1996­2008 2004-2008 8
No. of Articles [1996­2008]
WOS Scopus Diff
810
173
637
No. of Articles [2009] WOS Scopus Diff
1996­2009 2004-2009 8
807
130
677
12
1996­2000 2000,
2
536
4
532
2002-2003
2001
-1
1
-1
1996­2009 1996­2009 0
635
343
292
8
1996­2000 1996­
-3
274
270
4
2000,
2005-2008
1996­2008 1996­2008 0
253
246
7
1996­
1996­2008 0 1,031
795
236
6
6
0
0
4
4
0
0 0
1996­2009 1996­2007 2 1,296
454
842
21
21
1996­2009 1996­2008 1
553
237
316
13
13
1996­2008 1996­2008 0
375
352
23
0
2005-2008 1996­2008 -9
174
259
-85
0
1996­2009 1996­2009 0 1,077
314
763
15
1996­2009 1996­2009 0
865
427
438
12
0
0
5 10
7
5
0
1996­2009 1996­2009 0
639
413
226
8
8
0
1996­
20,049 18,790 1,259 195
100 95
1996­2008 2000, 2002 11 2,010
3 2,007
1996­
1996­2008 1996­2008 0
472
330
142
0
0
0
0
1996­2008 2004
12
443
4
439
1996­2008 2002-2008 6 1,024
54
970
1996­2009 1996, 1998-
5 1,980
296 1,684
33
2001, 2005-2009
1996­2008 2002-2008 6
332
93
239
17,507 4,403 13,104 122
0 0 0 0 0 0 6 27 0 30 86
command with the appropriate abbreviation(s) and truncation. For example, to find all the records in this database for the Department of Chemical engineering at Oklahoma State University in Stillwater, OK, for 1990­2008, a search executed using the address field as (okla* same state same univ* same stillwater same chem* same eng*) retrieved 170 relevant records where the affiliation is restricted to the same subfield. This is very useful for quickly retrieving records if one is studying the research output by a department within a university. In Scopus, Affiliation searching is available from both the Basic and the Advanced search forms. Scopus has an Affiliation Search form
prominently displayed at the Search menu. The Affiliation Search uses Scopus Affiliation Identifier functionality to locate affiliations. The identifier functionality finds and groups together affiliations that have similar names, so all documents associated with an affiliation can be found. After a search is executed, it can be refined by city. Once the specific identifier is located, it lists the number of records attached to that identifier. If details is selected, a very useful summary of research is displayed. This is an excellent feature for administrators who are gathering information about their institution's research output and for collection development librarians who may want to
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TABlE 2(D) - Philosophy and Sociology
Years Coverage [1996­2009] No of Articles [1996­2008]
Package
Journal Titles
WOS Scopus Diff WOS Scopus Diff
JSTOR Philosophy
The British Journal for the Philosophy of Science
1996­2009 1996­2009
0
661
397
264
Ethics
1996­2008 1996­2008
0
1,122
307
815
The Journal of Aesthetics and 1996­2009 art criticism
14
943
943
The Journal of Philosophy
1996­2008 2003, 2008 11
514
11
503
Mind
1996­2008
13
1,434
1,434
Noыs
1996­2009 1997-2008
2
822
292
530
The Philosophical Quarterly 1996­2009 1997-2009
1
1,226
324
902
The Philosophical Review
1996­2005 2007-2008
8
664
32
632
Philosophy of Science
1996­2008 1996­2008
0
1,120
860
260
Sociological Theory
1996­2009 1996­2009
0
271
252
19
JSTOR Sociology The American Journal of Sociology
1996­2008 1996­2008
0
2,828
479 2,349
Comparative Studies in Society 1996­2009 1996­2008
1
and History
618
364
254
Family Relations
1996­2009 1996­2009
0
883
652
231
Journal of Marriage and the
1996­2009 1996­2009
0
1,559 1,106
453
Family
Middle East Report
1996­2008 -13
421 -421
The public opinion Quarterly 1996­2008 1996­2008
0
438
418
20
Social Forces
1996­2008 1996­2008
0
1,691
775
916
Sociological Methodology
1996­2008 1996­2008
0
151
140
11
Sociology of Education
1996­2008 1996­2008
0
253
246
7
Total
17,198 7,076 10,122
No of Articles [2009]
WOS Scopus Diff
11
8
3
0
12
12
0
0
9
9
39
8 31
0
0
8
80
0
19
19
11 -11
16
14
2
0
0
0
0
0
114
49 65
study where their faculty/researchers are publishing and what they are citing. However, it is not possible to use this Affiliation Search feature and limit the records to a specific period. It only summarizes the results for all years and for a specific identifier (or location) or the total university. To make this feature useful, it should allow restricting retrieval to a time period and allow searching by department within a university or an organization. However, as an example, in Scopus a search to find all the records in this database for works done by the Department of Chemistry at Oklahoma State University in Stillwater, OK, for 1990­2008 can be done in the Advanced Search by using the AFFIL field as AFFIL(Ok* state univ* and stillwater and chem* and eng*) and (pubyear aft 1989 and pubyear bef 2009), which retrieved 193 records. Most of the records retrieved from this search will have the Department of Chemistry at Oklahoma State University in the same subfield of the record. To further compare the comprehensiveness of the two databases (for number of references retrieved, citation counts and H-indexes), 7 different departments from the University of Arkansas in Fayetteville were used by the author for searching in the affiliation (Scopus) or address field (WOS) for the years 1996­2008. The searches and their results are presented in Table 3 and analyzed by departments. For the Department of Chemistry and Chemical Engineering, WOS retrieved 227 more records than Scopus. Even though WOS
had more articles, Scopus had 923 more cited references. The Hindex for this department is the same in both databases. For the Department of Mechanical Engineering, Scopus retrieved 119 more records than WOS but the cited references were almost the same, with only 12 references more in Scopus. The H-Index for WOS is 14 and 13 for Scopus. Two more records were retrieved in Scopus for Food Science. Scopus had 185 more cited references for this set than WOS. The H-index is the same for both databases. For the Department of Psychology, WOS retrieved 56 more records and 430 more cited references than Scopus. The H-Index in WOS is 24 and 21 for Scopus. In Poultry Science, Scopus retrieved 3 records more than WOS but WOS had 43 more cited references. The H-index in both databases is 5. For the Department of Physics, Scopus retrieved 65 more records than WOS but had 819 fewer cited references than WOS. Scopus had an H-index of 39 while WOS had 38. For the Department of Economics, Scopus retrieved 5 more records than WOS and had 51 more cited references. The H-index is the same for both databases. Summary: WOS is stronger in chemistry, chemical engineering, and psychology, while Scopus has strengths in mechanical engineering
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TABlE 2E - Science Direct, Wiley, PNAS, Nature and Science
Package
Journal Titles
Science Direct Accounting, Organizations and Society
Advances in Accounting
Wiley Misc.
Annals of Physics Computers and Operations Research Developmental Biology Earth and Planetary Science Letters Journal of Structural Biology Mathematical and Computer Modelling Surface Science Trends in Genetics Advanced Materials AIChE Journal Cancer; Diagnosis, Treatment, Research Journal of Cellular Physiology Mass Spectrometry Reviews Philosophical Perspectives Proteins - Structure Function and Bioinformatics Software: Practice and Experience Synapse PNAS (Proceedings of the National Academy of Sciences of the United States of America) Nature Science Total
Years Coverage [1996­2009]
WOS
Scopus Diff
1996­2009 1996­2009
0
2000-2003,
-7
2005-2008
1996­2009 1996­2009
0
1996­2009 1996­2009
0
1996­2009 1996­2009
0
1996­2009 1996­2009
0
1996­2009 1996­2009
0
1996­2009 1996­2009
0
1996­2009 1996­2009
0
1996­2009 1996­2009
0
1996­2009 1996­2009
0
1996­2009 1996­2009
0
1996­2009 1996­2009
0
1996­2009 1996­2009
0
1996­2009 1996­2009
0
2003-2007
-5
1996­2009 1996­2009
0
1996­2009 1996­2009
0
1996­2009 1996­2009
0
1996­2009 1996­2009
0
1996­2009 1996­2009
0
1996­2009 1996­2009
0
No of Articles [1996­2008]
WOS Scopus Diff
471
471
0
124 -124
1,312
1,334
-22
1,867
1,855
12
11,292 5,219
5,559 5,733 5,101 118
1,694
1,708
-14
2,882
2,891
-9
12,784 12,697
87
1,698
1,829 -131
5,965
5,950
15
3,932
3,895
37
9,941 10,420 -479
3,202
3,214
-12
312
291
21
59 -59
3,972
3,953
19
879
870
9
1,689
1,689
0
40,892 40,977 -85
36,792 34,784 181,579
33,953 2,839 32,716 2,068 171,556 10,023
No of Articles [2009]
WOS Scopus Diff
14
25 -11
0
26
48 -22
196
247 -51
110
177 -67
71
167 -96
24
42 -18
124
188 -64
93
137 -44
11
22 -11
118
129 -11
49
35 14
136
105 31
101
101
0
18
10
8
0
144
71 73
14
9
5
39
20 19
562
471 91
478 487 2,815
396 82 375 112 2,775 40
and physics. The strengths of WOS and Scopus are about the same in food science, poultry science and economics. Scopus has more cited references than WOS in chemistry and chemical engineering (923 more), mechanical engineering (12 more), food science (185 more), and economics (51 more). WOS has more cited references in psychology (430 more), poultry science (43 more) and physics (819 more). The additional cited reference in Scopus should be obvious because Scopus covers a wider range of journals, conference proceedings, and other materials, while WOS conference proceedings citation index was not included in this study. The H-index for both databases was the same in four departments. In two cases WOS had a higher H-index, while in one case Scopus had a higher one.
Overall, WOS has 89 more records for all the departments and 121 more cited reference than Scopus. (3) Comparison of Citation Counts for Specific Journal articles Ten articles from different journals were checked in the two databases to compare their cited reference counts. The results presented in Table 4 show that for three of the articles, WOS had more cited references, while Scopus had more cited references for seven of the articles. Overall, Scopus had 457 more cited references than WOS. This increase in cited references in Scopus may be due to the broad coverage of the Scopus database, including conference proceedings. WOS Conference proceedings citation index was not included in the study.
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TABlE 3 - Affiliation Search - (Done on April 3, 2009)
Department Chemistry or Chemical Engineering Mechanical Engineering food Science Psychology Poultry Science Physics Economics
Query Scopus: (AFFIL(univ* ar* fay* chem*) AND PUBYEAR AFT 1995 AND PUBYEAR BEF 2009
No. Records 765
WOS: Address=(univ* same ar* same fay* same chem*) -- Timespan=1996­2008.
992
Databases=SCI-EXPANDED, SSCI, A&HCI.
Difference
-227
Scopus: AFFIL(univ* ar* fay* mech* eng*) AND PUBYEAR AFT 1995 AND
259
PUBYEAR BEF 2009
WOS: Address=(univ* same ar* same fay* same mech* same eng*) --
140
Timespan=1996­2008. Databases=SCI-EXPANDED, SSCI, A&HCI.
Difference
119
Scopus: AFFIL(univ* ar* fay* food sci*) AND PUBYEAR AFT 1995 AND
496
PUBYEAR BEF 2009
WOS: WOS: Address=(univ* same ar* same fay* same food same sci*) --
494
Timespan=1996­2008. Databases=SCI-EXPANDED, SSCI, A&HCI.
Difference
2
Scopus: AFFIL(univ* ar* fay* psych*) AND PUBYEAR AFT 1995 AND PUBYEAR
121
BEF 2009
WOS: Address=(univ* same ar* same fay* same psych*) -- Timespan=1996­2008.
177
Databases=SCI-EXPANDED, SSCI, A&HCI.
Difference
-56
Scopus: AFFIL(univ* ar* fay* pol* sci*) AND PUBYEAR AFT 1995 AND
32
PUBYEAR BEF 2009
WOS: Address=(univ* same ar* same fay* same pol* same sci*) --
29
Timespan=1996­2008. Databases=SCI-EXPANDED, SSCI, A&HCI.
Difference
3
Scopus: AFFIL(univ* ar* fay* physics) AND PUBYEAR AFT 1995 AND PUBYEAR
748
BEF 2009
WOS: Address=(univ* same ar* same fay* same phys*) -- Timespan=1996­2008.
683
Databases=SCI-EXPANDED, SSCI, A&HCI.
Difference
65
Scopus: AFFIL(univ* ar* fay* econ*) AND PUBYEAR AFT 1995 AND PUBYEAR
140
BEF 2009
WOS: Address=(univ* same ar* same fay* same econ*) Timespan=1996­2008.
135
Databases=SCI-EXPANDED, SSCI, A&HCI.
Difference
5
Cited Refs. 17,690 16,767 923 648 636 12 3,902 3,717 185 1,479 1,909 -430 67 110 -43 6,343 7,162 -819 506 455 51
h Index 57 57 0 13 14 -1 28 28 0 21 24 -3 5 5 0 39 38 1 11 11 0
(4) Publications at the university Level Searches for publications emanating from six universities for 2006­ 2009 were used to compare the differences in content in the two databases. The results presented in Table 5 shows that WOS had a greater number of publications from all six universities. This retrieval is puzzling since Scopus includes a much broader scope of material including conference proceedings. When a search is executed in Scopus using the Affiliation field, the results set automatically displays records retrieved from this database as well as publications retrieved from the Web (Scirus database) and from five patents offices. The number of patents retrieved from Scopus for each university is also listed in Table 5. However, since patents are not covered in WOS, these were not added in the total for comparison. This method of automatically searching the Web and patent
sources and displaying the citations is useful and can help the busy researcher find useful information quickly. This is also helpful because a user may not have thought about patents as a source of information relating to a specific inquiry, but when that information is conveniently presented, it can add value to the retrieval. It would add value to the Scopus database if these patents could be retrieved by inventor/author when an author search is performed in the Scopus database. Methods for Extracting information for Collection Development and Other activities Without doubt both WOS and Scopus are useful for finding research information by end users and for doing useful analyses of the results. Because of their multidisciplinary nature, they are also very useful for studying the publication patterns of faculty, department, schools,
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Table 4 - Citing Articles
Article Title
Source Information
Initial sequencing and analysis of the human genome
Nature 409 (6822), pp. 860-921, 2001
From molecules to crystal engineering: Supramolecular isomerism and polymorphism in network solids
Chemical Reviews 101 (6), pp. 16291658, 2001
Nanotube molecular wires as chemical sensors
Science 287 (5453), pp. 622-625, 2000
The SIESTA method for ab initio order-N materials simulation Journal of Physics Condensed Matter 14 (11), pp. 2745-2779, 2002
Structure and function of sphingolipid- and cholesterol-rich membrane rafts
Journal of Biological Chemistry 275 (23), pp. 17221-17224, 2000
Synthesis and characterization of monodisperse nanocrystals and close-packed nanocrystal assemblies
Annual Review of Materials Science 30, pp. 545-610, 2000
Class switch recombination and hypermutation require activation-induced cytidine deaminase (AID), a potential RNA editing enzyme
Cell 102 (5), pp. 553-563, 2000
A comparison of methods to test mediation and other intervening variable effects
Psychological Methods 7 (1), pp. 83104, 2002
Brain-computer interfaces for communication and control
Clinical Neurophysiology 113 (6), pp. 767-791, 2002
Human error: Models and management
British Medical Journal 320 (7237), pp. 768-770, 2000
Total
Scopus 7,262 2,567 2,110 1,467 1,157 1,056 921 933 657 635 18,765
WOS 6,345 2,439 2,927 1,509 1,148 1,063 919 897 592 469 18,308
Diff. 917 128 -817 -42 9 -7 2 36 65 166 457
% Diff. 12.63 4.99 -38.72 -2.86 0.78 -0.66 0.22 3.86 9.89 26.14 2.44
and institutes within an organization, which can be useful for decision making in higher administration. These two databases in their present format, with the inclusion of references from the publications indexed, can also provide useful data for collection assessment/development activities, important in building subject and targeted collections, especially in times of limited budgets. Thomson has advertised a paid service for doing a Local Journal Utilization Report for libraries6 and another paid service called InCites, which is a customized, citation-based research analytics tool on the Web that enables an institution to evaluate its productivity and benchmark its output against peers worldwide.7 Elsevier has a similar paid service called SciVal Spotlight (Elsevier's Research Performance Visualizer), which is expected to become available in June 2009. With some patience and analytical skills, an end user can extract some of the same types of information from these databases that he might otherwise pay for from these services; however, doing so can be a timeconsuming effort. Methodologies for Extracting Data for Collection Development A search for materials published by researchers/faculty at the University of California, Berkeley, for 2008 is used to illustrate how to extract data for collection development from both databases. In WOS, the following is a sample search: univ* same calif* same Berkeley­­in the address field and restricting it to 2008. This search retrieved 12,374 documents. A major aggravation in the WOS database is that only 500 records can be exported at a time. Under Output format, records 1 to 500 can be selected, then full records plus cited references can be saved in tab-delimited format. Once all the records are exported, they can be merged into an Excel file. Information from different fields of the records can be sorted to find the top journals that faculty are publishing in, what type of documents they are citing, which journals they are citing, how old the material is they are
citing­­all useful data for conducting collection assessment/development. These data can be used alongside vendor supplied data on use to make collection decisions. In Scopus, the search would be conducted in Advanced Search as: AFFIL(univ* cal* berk*) and pubyear aft 2007 and pubyear bef 2009. This search retrieved 5,688 documents. The feature Output can be selected to export the records; after this, choose comma-separated file as the file type, then complete format, and Export. This will save the file in a format that can be sorted by all the parameters including the references, in the same manner as WOS. In Scopus, there is no way to mark the records in chunks to be exported; it is only possible to select all the records retrieved on the displayed page (up to 200). Even if "all" is selected, only 2,000 will be exported. There is no easy way to mark the other records (i.e., 3,688) except by selecting each page of 200 records and marking them up to the next 2,000 to export, and so on. Both WOS and Scopus should make this process easier for librarians and administrators by allowing larger sets of records to be marked and exported at once. Searching Capabilities (a) Basic Searching The WOS main screen Search provides pull-down menus of 12 fields (topic, title, author, group author, editor, publication name, year published, address, language, document type, funding agency, grant no.) from which to do general searching. Once the document type field is selected, a scrolling list of the document types available in the database is automatically displayed. Clicking on a type of document­­for example, bibliography­­will place this in the search box as a searching parameter, but this has to be combined with at least one other search field for execution. This could also be done after the search by refining the retrieval to "bibliography" under "document types."
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Table 5 - Name of Institution Search for 2006­2009 (searches completed on April 6, 2009)
Institution University of California, Berkeley WOS search : Address=(univ* same cali* same berk*) Refined by: Publication Years=( 2008 OR 2006 OR 2007 OR 2009 ) Timespan=2006-2009. Databases=SCI-EXPANDED, SSCI, A&HCI. Scopus search: AFFIL(univ* cal* berk*)pubyear aft 2005 Univesity of Oklahoma, Stillwater WOS search: Address=(univ* same Okla* same stillwater) Refined by: Publication Years=( 2007 OR 2008 OR 2006 OR 2009 ) Timespan=2006-2009. Databases=SCI-EXPANDED, SSCI, A&HCI. Scopus search: AFFIL(univ* Okla* stillwater)pubyear aft 2005 University of Florida, Gainesville WOS Search: Address=(univ* same flor* same gaines*) Refined by: Publication Years=( 2007 OR 2006 OR 2008 OR 2009 ) Databases=SCI-EXPANDED, SSCI, A&HCI Timespan=2006-2009 Scopus search: AFFIL(univ* flor* gaines*)pubyear aft 2005 Massachusetts Institute of Technology WOS search: Address=(mass* same inst* same tech* or mit) Refined by: Publication Years=( 2007 OR 2008 OR 2006 OR 2009 ) Timespan=2006-2009. Databases=SCI-EXPANDED, SSCI, A&HCI. Scopus search: AFFIL(mass* inst* tech*) pubyear aft 2005 Ohio State University, Columbus, OH WOS search: Address=(ohio same state same univ* same col*) Refined by: Publication Years=( 2007 OR 2008 OR 2006 OR 2009 ) Timespan=2006-2009. Databases=SCI-EXPANDED, SSCI, A&HCI. Scopus search: AFFIL(ohio state univ* col*) pubyear aft 2005 Washington State University, Pullman WOS search: Address=(Wash* same state same univ* same pull*) Refined by: Publication Years=( 2007 OR 2008 OR 2006 OR 2009 ) Timespan=2006-2009. Databases=SCI-EXPANDED, SSCI, A&HCI. Scopus search: AFFIL(wash* state univ* pull*) pubyear aft 2005
Scopus WOS 18,511 19,475
Records Diff % diff -964 -5.21
Scopus Patents 363
2,782 2,851
-69 -2.48
43
15,988 17,461 -1,473 -9.21 14,854 16,110 -1,256 -8.46
457 1,105
15,119 17,116 -1,997 -13.21
211
4,029 4,372
-343 -8.51
55
WOS allows a user to add search boxes that will enable several fields to be searched simultaneously if needed. A search combining several fields could also be done in Advanced Search. The selection of the database(s) to be searched and the year(s) for searching is available from this screen. Once these are selected, they can be designated as the default for searching during the session. These can also be saved permanently if users have signed into their WOS account. In Scopus, Basic Search has two boxes only, with pull-down menus of 16 search fields (i.e., all fields, article-title-abstract-keywords, authors, first authors, source title, article title, abstract, keywords, affiliation, language, ISSN, CODEN, DOI, references, conferences, and article title-abstract-keywords-authors). Only two boxes for initial searching can be restrictive, but the retrieval from a search can be refined by several parameters from the faceted display­­source title(s), author name(s), year(s), document type(s), and subject area(s), and any number of searches can be combined using AND, OR, and AND NOT using the Search History. However, this capability may not be immediately obvious to a new user. As in WOS, a search combining several fields can also be done in Advanced Search.
Author Indexes In WOS, browseable indexes are provided for authors and group authors. Once Author Index is selected from the pull-down menu, an icon for the Author Index appears. If this icon is selected to browse the index, it is possible to click on a letter or to type a few letters from the beginning of the name to browse alphabetically by author. The results show the authors and the number of records in the database. The Author Finder allows a user to type in the name and the initial(s) to search. The result is a listing of the authors with that name and initials, together with the number of citations. By using the Create Citation Report feature one can have a citation overview of an author's published output. After an author search is conducted, The Distinct Author Set feature is displayed on the next screen. This is a discovery tool showing sets of papers likely to be written by the same person. Citation data is analyzed to create these sets and should be used as a tool to focus a search rather than as a definitive list of a specified author's work. This author finder feature is useful to retrieve most of the work for a particular author if the author has changed location or if the author is
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working on more than one topic. The results shown will depend on the databases and time span that is selected.8 After an author search is executed, the citations are displayed in addition to times cited for each record. The faceted display of the retrieved set is further analyzed by means of the three general categories (science and technology, Social Sciences, and Arts and Humanities), Subject Categories, Document Types, Authors, Source Titles, Publication Years, and Language, together with the number of records under each of these. The retrieved set may be sorted by Publication Date, Times Cited, Relevance, First Author, and Source Title. To retrieve Web resources based on this author's search, one can click on the ISI Scientific WebPlus Beta database that is prominently displayed at the top of the screen to transfer the search. The records retrieved from this search are automatically sorted by Web domains, such as edu, com, org, gov., etc. This is unique to WOS. In Scopus, from the Basic Search screen, author searches can be performed in three different fields (by authors, first authors, article title­ abstract­keywords­author ) from a pull-down menu. An Author tab is also prominently displayed on the opening screen. To make author searching more precise, a search may be restricted to one of four subject areas (life sciences, health sciences, physical sciences, and social sciences) and by date range and document type. Once a search for an author is completed, the retrieval set will display all variations of the author's name together with the number of records retrieved by four parameters (source title, affiliation, city, country and subject area). These are used to refine the search and aid in precision retrieval. The author's detail identified by an icon will show variations of the author's name, links to other articles written by this author, together with the papers that have cited them. By using the Citation Tracker one can create a citation overview for this author. From the author's detailed page, a user may set up a document citation alert so he will be notified when other articles by this author are added to the database as well as a separate citation alert so he can be informed when documents written by the author are cited. Like WOS, author searching for editors, as well as authors and author collaboration (group authors) are available in this database. Publication Name Index Under Search (in WOS), when the Publication Name is selected from the pull-down menu, a title can be searched only in the predetermined order. However, in the Publication Name Index, the title can be browsed alphabetically, or it can be searched by keywords to find all titles containing those keywords. A search by keyword in this index for "american chemical society" retrieved three records. These were: Abstracts of Papers of the American Chemical Society; Conference Proceedings Series American Chemical Society; and Journal of the American Chemical Society. Conference Proceedings Series American Chemical Society is listed but is not searchable in the three indexes under study. The Journal of the American Chemical Society is listed as a single entry and retrieved more than 100,000 records, but only the first 100 of any of the facets (subject areas, document types, authors, publication years, institutions and countries/territories) can be displayed after retrieval. If more information is needed, the Analyze Results feature will allow analysis by any of these facets up to 100,000 records, but only the top 500 of the results may be saved to a file. There should be no limit on the number of records to be analyzed, displayed or exported. Under the Publication Name Index there are hundreds of conference titles listed with the code beginning 0-9 before the alphabetical titles
begin. Some conference titles are also interfiled with the alphabetical listing of publications, but when retrieved, the following message appears: "Your search (shown below) found no records." Since these indexes are sold and purchased as individual entities, it should only list material available for searching unique to each of the databases. It seems these were intended for the Conference Proceedings Citation Index, but they are also linked under the other citation databases. Scopus does not have an index to browse from which to select a source title (or publication names) before a search. Source titles can be searched by keywords as well as by the complete title from Basic Search when Source Title is selected. The source titles are displayed together with the number of citations in the retrieved set after the search is conducted. A search may be refined by choosing the appropriate source title from the displayed set. All the records from the retrieved set are automatically displayed under several facets (i.e., Source Title, Author Name, Year, Document Type, and Subject area). These facets can then be easily used to further refine the search. However, it seems that there is need to clean up the records and/or provide complete information for each record in the database. The faceted display for the Source Title search for the Journal of the American Chemical Society had 2,031 records with undefined document types, 76 records had no subject areas assigned and 566 records had no defined authors. Also a keyword search conducted in the Source Title field for "american chemical society" retrieved 169,416 records. In the displayed set, there were eight separate listings for the Journal of the American Chemical Society among the 24 source listings. (B) ADvANCED SEARChINg WOS uses 2-character tags for searching in this index. These tags are prominently displayed at the right of the screen. Indexes are linked to the Author, Group Author, and Publication Name, which is useful in search preparation. Limits could be set from this Advanced Search screen for years, type of documents, and language. The results of the search appear in the Search History at the bottom of the page. Searches can be combined for further searching. Useful examples of searching showing how to combine fields and operators (AND, OR, NOT, and SAME) are provided and prominently displayed under the search box. Any of the searches can be used to create an alert from this screen also. Like WOS, Scopus uses field codes that are prominently displayed on the left-hand side of the screen as well as a file on top of the search box. Ample examples are provided to help a user formulate good searches. A search can be combined using AND, OR, NOT, and proximity operators. The results of the searches are displayed at the bottom of the screen and can be combined together using Boolean connectors (AND, OR, NOT). Any of the searches can be used to create alerts from this screen. (C) UNIQUE fEATURES In WOS, one can search for funding information (i.e., Funding Agency, Grant Number, and Funding Text). This useful research information can assist a potential grant applicant to study the types of research that a certain agency is funding, who is getting the funding money, what the published output is from a specific grant, and so on. In the future, this feature will also help users target information for which the publication may be available freely on the Web. WOS has a Cited Reference Search button prominently displayed, which is useful for browsing and, of course, for retrieving cited references. One can set limits on the date, type of document, and language and save these permanently after logging in. EndNote is fully integrated
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Web of Science (Thomson Scientific) Review Scores Composite: HHHH 1/4 The maximum number of stars in each category is 5.
Coverage and Currency:
HHHHH
Scopus covers a much wider range of materials than does WOS, but the search results show that Web of Science has much more complete coverage. For all areas described in Table 2a-2e (Journals), WOS had more articles indexed and in three of the five areas had more current citations. It is obvious that WOS is more comprehensive in coverage even when both databases covered the same years for a title.
For the department level search, overall, WOS has 89 more records for all the departments and 121 more cited references than Scopus. For the university level search, the results presented in Table 5 shows that WOS had a greater number of publications from all six universities.
Overall, the results presented in Table 1 show that in all but two cases (Science Direct and BioOne titles), WOS had more recent articles in the database. The most noticeable is the difference (77.74%) in number of articles from the ACS package indexed in WOS that were not indexed in Scopus for 2009.
Citation Counts:
HHHH
On the departmental level, the search shown in Scopus has more cited references than does WOS in chemistry and chemical engineering (923 more), mechanical engineering (12 more), food science (185 more), and Economics (51 more). WOS has more cited references in psychology (430 more), poultry science (43 more) and Physics (819 more).
Table 4 shows that for three of the articles, WOS had more cited references, while Scopus had more cited references for seven of the articles. Overall, Scopus had 457 more cited references than WOS. These results are expected and are even a bit disappointing taking into account the number of types of materials indexed in the Scopus database.
Ease of Use, Search refinement, analysis of results: HHHHH Both systems are easy to use for the general retrieval of information. Both systems provide useful and informative help in several formats, and both systems provide information on their selection and inclusion policy. Both databases have well organized Basic and Advanced searching features, but WOS has browseable indexes for personal and group authors and for publications. In WOS, it is easy for the user to refine a search in advance by adding more search boxes; in Scopus a user performs the search and then refines it from the faceted lists displayed with the results. Scopus automatically displays the faceted listing of all the results, while in WOS, one will need to use the Analyze feature, but this analysis is restricted to 100,000 records and will only display the top 500 results. In Scopus, one can select up to 2,000 records to see all the cited references for further analysis. In WOS, up to 10,000 records could be used to create the citation report. The results screen for the citation report displays the number of citing articles that could be selected for further analysis by several facets. Scopus allows direct export to Refworks, while EndNote is fully integrated and freely available to any WOS user.
Collection development activity:
HHH
Both databases can provide useful data for collection assessment and development activities, important in building subject and targeted collections, especially in times of limited budgets. Both databases should increase the number of records to be exported so as to limit the tediousness of this task.
and freely available to any WOS user. Direct export to Refworks is not available. The maximum number of records to be analyzed using the Analyze feature in WOS is limited to 100,000, but only 500 of the top records are displayed. Retrieval of fewer than 10,000 is needed to create a citation report. These numbers are too restrictive and negate the usefulness of these features. In Scopus, unlike WOS, all records are automatically displayed under several facets after a search is completed, and any of these can be used for refining. The Citation Tracker in Scopus will create a citation report
based on 5,000 records at a time. If the number of records for which a citation report is required exceeds 5,000, the user must tediously click on "next page" several times to get past the first 5,000 records, then mark page after page for the remaining records, since there is no place to mark a group of records at one time. This is indeed tedious and cumbersome. The number should be considerably increased. Scopus allows searching references in a paper in both the Basic Search and Advanced Search modes. When a search such as REF(Charles Darwin evolution) is executed, it will restrict the search to the same reference in a record. This could be very useful for verifying information and covering literature not necessarily covered in the database.
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Scopus (Elsevier) Review Scores Composite: HHHH The maximum number of stars in each category is 5.
Coverage and Currency:
HHHH
Scopus covers a much wider range of materials than does WOS, but the search results show that Web of Science has much more complete coverage. For all areas described in Table 2a-2e (Journals), WOS had more articles indexed and in three of the five areas had more current citations. It is obvious that WOS is more comprehensive in coverage even when both databases covered the same years for a title.
For the department level search, overall, WOS has 89 more records for all the departments and 121 more cited references than Scopus. For the university level search, the results presented in Table 5 shows that WOS had a greater number of publications from all six universities.
Overall, the results presented in Table 1 show that in all but two cases (Science Direct and BioOne titles), WOS had more recent articles in the database. The most noticeable is the difference (77.74%) in number of articles from the ACS package indexed in WOS that were not indexed in Scopus for 2009.
Citation Counts:
HHHH
On the departmental level, the search shown in Scopus has more cited references than does WOS in chemistry and chemical engineering (923 more), mechanical engineering (12 more), food science (185 more), and Economics (51 more). WOS has more cited references in psychology (430 more), poultry science (43 more) and Physics (819 more).
Table 4 shows that for three of the articles, WOS had more cited references, while Scopus had more cited references for seven of the articles. Overall, Scopus had 457 more cited references than WOS. These results are expected and are even a bit disappointing taking into account the number of types of materials indexed in the Scopus database.
Ease of Use, Search refinement, analysis of results: HHHHH Both systems are easy to use for the general retrieval of information. Both systems provide useful and informative help in several formats, and both systems provide information on their selection and inclusion policy. Both databases have well organized Basic and Advanced searching features, but WOS has browseable indexes for personal and group authors and for publications. In WOS, it is easy for the user to refine a search in advance by adding more search boxes; in Scopus a user performs the search and then refines it from the faceted lists displayed with the results. Scopus automatically displays the faceted listing of all the results, while in WOS, one will need to use the Analyze feature, but this analysis is restricted to 100,000 records and will only display the top 500 results. In Scopus, one can select up to 2,000 records to see all the cited references for further analysis. In WOS, up to 10,000 records could be used to create the citation report. The results screen for the citation report displays the number of citing articles that could be selected for further analysis by several facets. Scopus allows direct export to Refworks, while EndNote is fully integrated and freely available to any WOS user.
Collection development activity:
HHH
Both databases can provide useful data for collection assessment and development activities, important in building subject and targeted collections, especially in times of limited budgets. Both databases should increase the number of records to be exported so as to limit the tediousness of this task.
Scopus allows searching of Digital Object Identifier (DOI), chemical names, CAS registry numbers, trade name, ISSN, EISSN, ISBN, CODEN, sequence Bank, and sequence bank number. These fields are all very useful for retrieving precise information when needed. Automatic truncation in text fields is the default in all searching modes in the Scopus database. Scopus allows direct export to RefWorks. at a GLanCE SuMMarY Coverage and timeliness Scopus covers a much wider range of materials1 than WOS,2 but the search results show that Web of Science has much more complete
coverage. For all areas described in Table 2a-2e (Journals), WOS had more articles indexed and in three of the five areas had more current citations. It is obvious that WOS is more comprehensive in coverage even when both databases covered the same years for a title. For the department level search, overall, WOS has 89 more records for all the departments and 121 more cited reference than Scopus. For the university level search, the results presented in Table 5 shows that WOS had a greater number of publications from all six universities. Overall, the results presented in Table 1 show that in all but two cases (Science Direct and BioOne titles), WOS had more recent articles in the database. The most noticeable is the percent difference (77.74%)
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in number of articles from the ACS package indexed in WOS that were not indexed in Scopus for 2009. Cited reference Counts On the departmental level, the search shown in Scopus has more cited references than does WOS in chemistry and chemical engineering (923 more), mechanical engineering (12 more), food science (185 more), and Economics (51 more). WOS has more cited references in psychology (430 more), poultry science (43 more) and Physics (819 more). The results presented in Table 4 shows that for three of the articles, WOS had more cited references, while Scopus had more cited references for seven of the articles. Overall, Scopus had 457 more cited references than WOS. These results are expected and are even a bit disappointing taking into account the number of types of materials indexed in the Scopus database. Contact information Scopus/Elsevier North or Central America: P.O. Box 945 New York, NY 10159-0945 Phone: (888) 615-4500 or (212) 462-1978 from outside the U.S.A. and Canada Phone: (888) 437-4636 Fax: (212) 462-1974 (helpdesk) E-Mail: Europe, the Middle East or Africa: E-Helpdesk P.O. Box 211 1000 AE Amsterdam The Netherlands Tel: +31 20 485 3767 Fax: +31 20 485 3432 E-Mail: [email protected] Web of Science/Thomson Scientific In the Americas: 3501 Market Street Philadelphia, PA 19104 Phone: (800) 336-4474 or (215) 386-0100 Fax: (215) 386-2911 Europe, Middle East and Africa: 14 Great Queen Street London, U.K. WC2B 5DF Phone: +44 20 7344 2800 Fax: +44 20 7344 2900
Ease of use, Search refinement and analysis of results Both systems are easy to use for the general retrieval of information. Both systems provide useful and informative help in several formats, and both systems provide information on their selection and inclusion policy.5 Both databases have well organized Basic and Advanced searching features, but WOS has browseable indexes for personal and group authors and for publications. In WOS, it is easy to plan the search in advance by adding more search boxes; in Scopus this is done after a search by refining the search from the faceted lists that are displayed. Scopus automatically displays the faceted listing of all the results, while in WOS, one will need to use the Analyze feature, but this analysis is restricted to 100,000 records and will only display the top 500 results. In Scopus, one can select up to 2,000 records to see all the cited references for further analysis. In WOS, up to 10,000 records could be used to create the citation report. The results screen for the citation report displays the number of citing articles that can be selected for further analysis by several facets. Scopus allows direct export to Refworks, while EndNote is fully integrated and freely available to any WOS user. usefulness in Collection assessment and Development Both databases can provide useful data for collection assessment/development activities, important in building subject and targeted collections, especially in times of limited budgets. Both databases should increase the number of records to be exported so as to limit the tediousness of this task. references 1. Thomson Reuters. . Accessed March 16, 2009. 2. Elsevier B.V. Scopus. . Accessed March 16, 2009. 3. Goodman David and Deis Louise. 2005. Web of Science (2004 version) and Scopus. The Charleston Advisor, January 2005, pp. 5­21 4. Goodman David and Deis Louise. 2006. Update on Scopus and Web of Science. The Charleston Advisor, January 2007., pp. 15­18. 5. Fingerman, Susan. 2006. Web of Science and Scopus: current features and capabilities. Issues in Science and Technology Librarianship. 10 p. . 6. Thomson Reuters. 2009. Local journal utilization report. . Accessed March 27, 2009. 7. Thomson Reuters. Incites. . Accessed March 27, 2009. 8. Thomson Reuters. Distinct author sets. < http://images.isiknowledge.com/WOK45/help/WOS/h_da_sets.html>. Accessed March 27, 2009. about the author lutishoor Salisbury is University Professor/Librarian and Head of Chemistry and Biochemistry Library at the University of Arkansas Libraries, Fayetteville. n

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