Presentation on theme: "T H O M S O N S C I E N T I F I C Citation Indexing ISI Web of Science and Journal Citation Reports Tracy Matthews Thomson Scientific"— Presentation transcript:
T H O M S O N S C I E N T I F I C Citation Indexing ISI Web of Science and Journal Citation Reports Tracy Matthews Thomson Scientific
T H O M S O N S C I E N T I F I C So, What is a Citation Index? In addition to standard bibliographic information a citation index includes the cited references of the items indexed. An author implies a subject relationship when he or she cites a work: –“the act of citing is an expression of the importance of the material.” References serve to essentially replace a controlled vocabulary
T H O M S O N S C I E N T I F I C Things to Keep in Mind... Authors cite works both to support and to refute them. There are no codes in the ISI database to tell you why an item is cited. ISI Cited References are not an attempt to re- create a bibliography word for word. 1st listed author’s surname & up to 3 initials Abbreviated title of the cited work Volume, starting page, and cited year.
T H O M S O N S C I E N T I F I C ISI Citation Indexes Bibliography entry: Wheatley A & Armstrong C. (1997). Metadata, recall, and abstracts: can abstracts ever be reliable indicators of document value? ASLIB Proceedings 49 (8): ISI Cited Reference: WHEATLEY A ASLIB PROC
T H O M S O N S C I E N T I F I C Shepardizing In 1953 Dr. Garfield learns of Shepard’s Citations –Developed in 1873, the oldest major citation index in existence American legal system is based on precedent –Shepard’s lists the citations to precedents used in cases decided by the courts and federal administrative agencies Provides a model for how a citation index could be organized into an effective search tool
T H O M S O N S C I E N T I F I C Welch Medical Library Project Dr. Garfield becomes interested in machine generated term indexing: –generate terms that effectively describe the “aboutness” of a document –do this without the need of intellectual judgements from human indexers From this interest... citation indexing.
T H O M S O N S C I E N T I F I C Pilot Citation Indexes ISI produces the 1961 Genetics Citation Index with a grant from the National Institutes of Health –Compile a comprehensive, multidisciplinary database –Extract relevant genetics material Provided a more comprehensive, deeper view of the literature than conventional subject indexes.
T H O M S O N S C I E N T I F I C Pilot Citation Indexes The multidisciplinary index provided several distinct advantages: –Illuminated the bounds of a particular discipline –Insights into patterns of scholarly communication and journal networks –Revealed the historical development of scientific thought –Indicated the implications and impact of a particular work
T H O M S O N S C I E N T I F I C ISI Citation Indexes ISI’s findings compelled them to create the Science Citation Index. The Social Sciences Index followed in The Arts & Humanities Index was introduced in 1978.
T H O M S O N S C I E N T I F I C Benefits of a Citation Index Allows searching forward in time. –Take a known paper and find out who is citing it. Classification terms in subject indexes can be ambiguous. –Citations are bound to concepts instead of vocabulary.
T H O M S O N S C I E N T I F I C Benefits of a Citation Index Multidisciplinary Citation Indices allow for serendipitous discovery –A subject-specific index might not have index terms for each concept in a given article. Ex. Space debris
T H O M S O N S C I E N T I F I C Uses of Citation Analysis Researcher evaluation –Use as a starting point in promotion and tenure decisions. Competitive intelligence –Find out what competitors are publishing and citing. Mapping relationships between subject areas –Bibliometric researchers determine relationships between disciplines.
T H O M S O N S C I E N T I F I C Macro Citation Analysis JCR Impact Factor –How often is the typical article from a specific journal cited? Institutional Journal Use Analysis –Selection, retention, archiving, and storage decisions –Which journals are the faculty at your institution using the most?
T H O M S O N S C I E N T I F I C Publication Selection
T H O M S O N S C I E N T I F I C Database Production and Extraction ISI Database Journal/Book acquisition Item Selection and Data Capture Manual Indexing/ Translation (for foreign language journals and some A&H content) Processing Time 1-2 Weeks Appearance of item in ISI’s products Scanning & OCR
T H O M S O N S C I E N T I F I C Document Types All Files Article Bibliography Biographical Item Book Review Correction Database Review Editorial Material Hardware Review Letter Meeting Abstract News Item Reprint Review Software Review Arts & Humanities Only Art Exhibit Review Dance Performance Review Excerpt Fiction Creative Prose Film Review Music Performance Review Music Score Music Score Review Poetry Record Review Script Theater Review TV Review Radio Review
T H O M S O N S C I E N T I F I C Journal Coverage Covered Journals New Records Weekly New Cited References Weekly Science Citation Index Expanded 6,03418,800431,000 Social Sciences Citation Index 1, ,100 Arts & Humanities Citation Index 1,1212,10015,900
T H O M S O N S C I E N T I F I C Full Bibliographic Record All author names are indexed and searchable. ISI indexes an author’s complete last name and up to five initials. The complete abstract is indexed and searchable.
T H O M S O N S C I E N T I F I C Full Bibliographic Record (continued) Author Keywords are indexed when included with the published item. KeyWords Plus are harvested from the titles of the cited articles. Author affiliations are indexed when available with the published item. The reprint author’s address is listed as the first address in the field.
T H O M S O N S C I E N T I F I C Full Record / Elements Author nameAll authors indexed and searchable – last name and up to 5 initials TitleComplete article title as published. Non-English titles translated into US English Source Information Journal title, Volume, Issue, Page Range, Date AbstractFull author abstract Author Keywords When included in original publication KeyWords Plus Selected from titles of cited references AddressAuthor affiliations are captured when provided. First line of address field lists reprint author address
T H O M S O N S C I E N T I F I C Cited References Cited References in blue are links to full records. (Limited by your subscribed data years.)
T H O M S O N S C I E N T I F I C Cited References (continued) Cited References in plain text are citations to items outside of your coverage; to items ISI doesn’t index (books, etc.); or to items that have been cited incorrectly by the author (cited reference variants.)
T H O M S O N S C I E N T I F I C Cited Reference Components
T H O M S O N S C I E N T I F I C Cited Reference Components (continued)
T H O M S O N S C I E N T I F I C Truncation SymbolRetrieves * Zero or more characters $ Zero or one character ? One character only
T H O M S O N S C I E N T I F I C Boolean Operators All search terms must occur to be retrieved. TOPIC: aspartame AND cancer* Retrieves documents that contain both aspartame and cancer*. Any one of the search terms must occur to be retrieved. Use when searching variants and synonyms. TOPIC: aspartame OR saccharine OR sweetener* Retrieves documents that contain at least one of the terms. Excludes records that contain a given search term. TOPIC: aids NOT hearing Retrieves documents with aids, excluding any which also contain hearing.
T H O M S O N S C I E N T I F I C Proximity Operators Implied Adjacency By default, searching a phrase retrieves records that contain the adjacent terms in the same order. SameTerms must occur within the same sentence, where “sentence” is generally a period-delimited string, in any order. In keyword fields, the SAME operator will retrieve records with search terms in the same keyword phrase.