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• Scopus is the largest abstract and citation database of peer-reviewed literature, features smart tools to track, analyze research
• 21,000 titles from more than 5,000 international publishers in the fields of science, technology, medicine, social sciences and arts and humanities
Facts & figures
What Does Scopus Cover?
Over 21,000 titles from more than 5,000international publishers
Including the coverage of :
• 20,874 peer-reviewed journals (including 2,800 open access journals)
• 367 trade publications
• 30,000 books
• Extensive conference coverage (5.5 million conference papers)
• "Articles-in-Press" from more than 3,750 journals and publishers
The 53 million records on Scopus include:
• 32 million records, including references, going back to 1995 (84% include abstracts).
• 21 million pre-1996 records going back as far as 1823.
• Scopus also cross-searches 24 million patents from five patent offices: (US Patent & Trademark Office, European Patent Office, Japan Patent Office, World Intellectual Property Organization and the UK Intellectual Property Office).
Searching Scopus
Search Options & Refinements
Search Forms: • Advanced Search • Author• Affiliation
Search Options & Refinements
Search Options & Refinements
Search Refinements
Refinement Categories:
• Title• Author• Affiliation• Year• Subject Area• Keywords
Analysis Tools
Identifying and Analysis tools
• Identify subject experts with Author Identifier• Track citations over time for a set of authors or
documents, with Citation Overview/Tracker View h-index for specific authors
• Analyze an author's publishing output with Author Evaluator
• Gain insight into journal performance with journal analyzer and alternative journal impact metrics SNIP and SJR
The Author Identifier & Evaluator
Author searching with enhanced accuracy to help users reach author-specific information more quickly and efficiently.
Challenges:• Many authors share the same name.
• Author names can vary in the way they are formatted.
Solution:• Author Identifier distinguishes between these author names, it
gives each author a separate ID and groups together all the documents written by that author.
How Does the Author Identifier Work?
Scopus uses a sophisticated algorithm which recognizes authors based on various data elements associated
with the article:
Name Variants
Subject Area
Affiliation/s
Publications History
Co-Author/s
Metrics & Measurements in Scopus
h-Index
The index is a Performance Measurement Tool for Scientific Authors
(similar idea to journal impact factors but for individuals)
Established by Jorge Hirsch at UC San Diego
who stated that:
“A scientist has index h if h of his/her Np papers have at least h citations each, and the other (Np- h) papers
have no more than h citations each.”
Source: Hirsch, J. E. (2005, September 29). An index to quantify an individual’s scientific research output. Retrieved from:
http://arxiv.org/abs/physics/0508025
What is the h-index?
• Rates a scientist’s performance based on their career publications, as measured by the lifetime number of citations each article receives.
• Depends on both quantity (number of publications) and quality (number of citations) of a scientist’s publications.
• The h-index lists all publications in descending order by the number citations received to date.
SNIP measures contextual citation impact by weighting citations based on the total number of citations in a subject field.
How is the h-index different from the Impact Factor?
• The main difference is that the h-index refers to the performance of an individual scientist. The Impact Factor refers to the average performance of all articles in a journal.
• The h-index is based on lifetime citations received by a scientist’s articles. The Impact Factor is based on only 2-year’s worth of citations.
• Both rankings measure the average performance, of an individual scientist or a journal. Some articles will receive many more citations, and some fewer, than the ranking figure.
Advantages & Disadvantages of the h-index
Advantages:
• Takes into accounts both productivity and quality of a scientist’s publications, and so can distinguish between truly influential scientists, those who just publish many papers, and one-shot wonders.
• Insensitive to a set of uncited or lowly cited papers, so that the impact of a scientist’s high quality output is not diluted by papers that have performed poorly for whatever reason.
• Does not necessarily penalise a scientist with a short career, since the h-index can be similar for scientists with different numbers of papers.
Advantages & Disadvantages of the h-index
Disadvantages:
• Insensitive to one or several very highly cited papers.
• h-index is not independent of time, since a scientist’s h-index can never be greater than the number of papers they have published in their career.
• A high h-index is not always a reliable indicator of high personal achievement.
• The h-index cannot decrease with time, and so cannot be used to detect declining research output or retirement.
SCImago Journal Rank (SJR)
SJR is a measure of the scientific prestige of scholarly sources: value of weighted citations per document.
Source Normalized Impact per Paper (SNIP)
SNIP measures contextual citation impact by weighting citations based on the total number of citations in a subject field.
Questions? Comments?
