Academic Search Engines

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Academic Search Engines

  1. 1. ONLINE SEARCHING FOR PROFESSIONAL OR ACADEMIC PURPOSES – PART II Academic Search Engines September 2007 L. Codina. UPF Interdisciplinary CSIM Master
  2. 2. Summary <ul><li>Academic Search Engine Characterization </li></ul><ul><ul><li>Inputs: </li></ul></ul><ul><ul><ul><li>Information sources </li></ul></ul></ul><ul><ul><ul><li>Kind of documents </li></ul></ul></ul><ul><ul><li>Output: </li></ul></ul><ul><ul><ul><li>Types of retrieved documents (access) </li></ul></ul></ul><ul><li>Main academic search Engines </li></ul><ul><ul><li>Google Scholar </li></ul></ul><ul><ul><li>Scirus </li></ul></ul><ul><ul><li>Live Academic </li></ul></ul>September 2007 L. Codina. UPF Interdisciplinary CSIM Master
  3. 3. Inputs: Information sources <ul><li>Typology of institutions or corporations web sites indexed by the A-SE </li></ul><ul><ul><li>Universities ( .edu sites) </li></ul></ul><ul><ul><li>Research centres (NASA, RAND, etc.) </li></ul></ul><ul><ul><li>Government (sites related with science, technology, etc.) </li></ul></ul><ul><ul><li>Journal and book publishers </li></ul></ul><ul><ul><li>Library collections </li></ul></ul><ul><ul><li>Digital repositories (e-prints, e-books, etc.) </li></ul></ul>September 2007 L. Codina. UPF Interdisciplinary CSIM Master
  4. 4. Inputs: Typology of documents <ul><li>Web pages (and any kind of documents: pdf, word, etc.) published in web sites </li></ul><ul><li>Articles of peer review journals (both open access and subscription-based access) </li></ul><ul><li>Academic works , like dissertations, thesis, etc. </li></ul><ul><li>Patents </li></ul><ul><li>Books </li></ul><ul><li>References (not the full text document, only the bibliographic reference) </li></ul>September 2007 L. Codina. UPF Interdisciplinary CSIM Master
  5. 5. Output: Types of Retrieved Documents <ul><li>The retrieved documents in the search engine results page may be: </li></ul><ul><ul><li>Free (web pages, open access peer review journal articles, etc.) </li></ul></ul><ul><ul><li>Free if you are in the campus or connected to the campus network (articles of the peer review journal that are subscribed by your University) </li></ul></ul><ul><ul><li>Not free: by payment because the journal is not subscribed by your university (articles of the peer review subscription-based journal) </li></ul></ul><ul><ul><li>References only (not the document: you have to find out the full text document by other ways) </li></ul></ul>September 2007 L. Codina. UPF Interdisciplinary CSIM Master
  6. 6. The main Academic-Search Engines <ul><li>Google Scholar (Google) </li></ul><ul><li>scholar.google.com </li></ul><ul><li>Scirus (Elsevier) www.scirus.com </li></ul><ul><li>Academic Live (Microsoft) academic.live.com </li></ul>September 2007 L. Codina. UPF Interdisciplinary CSIM Master
  7. 7. Google Scholar - I <ul><li>Google Scholar </li></ul><ul><ul><li>Inputs: </li></ul></ul><ul><ul><ul><li>All sources and types, except patents </li></ul></ul></ul><ul><ul><li>Special features: </li></ul></ul><ul><ul><ul><li>Citation analysis, ranking and navigation options </li></ul></ul></ul>September 2007 L. Codina. UPF Interdisciplinary CSIM Master
  8. 8. Google Scholar - II September 2007 L. Codina. UPF Interdisciplinary CSIM Master
  9. 9. Scirus - I <ul><li>Scirus </li></ul><ul><ul><li>Inputs: </li></ul></ul><ul><ul><ul><li>All sources and types, except books and references </li></ul></ul></ul><ul><ul><li>Special features: </li></ul></ul><ul><ul><ul><li>The search facilities, the characteristics of the results page, the diversity of sources, the access to full text patents and the total amount of available information </li></ul></ul></ul>September 2007 L. Codina. UPF Interdisciplinary CSIM Master
  10. 10. Scirus II September 2007 L. Codina. UPF Interdisciplinary CSIM Master
  11. 11. Live Academic - I <ul><li>Live Academic </li></ul><ul><ul><li>Inputs: </li></ul></ul><ul><ul><ul><li>All sources, except patents </li></ul></ul></ul><ul><ul><li>Special features: </li></ul></ul><ul><ul><ul><li>Visualization, sort and exportation options in the results page </li></ul></ul></ul>September 2007 L. Codina. UPF Interdisciplinary CSIM Master
  12. 12. Live Academic - II September 2007 L. Codina. UPF Interdisciplinary CSIM Master
  13. 13. Ranking by amount of information <ul><li>Scirus </li></ul><ul><li>Google Scholar </li></ul><ul><li>Live </li></ul><ul><li>A simple test. Keyword: hypertext </li></ul><ul><li>Number of results in: </li></ul><ul><li>Scirus : 615,695 documents </li></ul><ul><li>Google Scholar : 252,000 documents </li></ul><ul><li>Live : 12,153 documents </li></ul>September 2007 L. Codina. UPF Interdisciplinary CSIM Master
  14. 14. Conclusions - I <ul><li>Databases vs. search engines: What is the different role of each system? </li></ul><ul><ul><li>Academic databases (subscription-based): </li></ul></ul><ul><ul><ul><li>Indispensable if you need to legitimate your work (for example, for a dissertation or to submit a paper to a peer review journal) </li></ul></ul></ul><ul><ul><ul><li>If you want to be sure about the state of art in your field </li></ul></ul></ul><ul><ul><ul><li>The most trustworthy information </li></ul></ul></ul><ul><ul><li>Academic Search Engines (free-access): </li></ul></ul><ul><ul><ul><li>The most up to date information </li></ul></ul></ul><ul><ul><ul><li>Quickly and easy access to information </li></ul></ul></ul><ul><ul><ul><li>Useful information: more practical, more understandable, more direct and academic-jargon free, etc. (but at your risk) </li></ul></ul></ul><ul><ul><ul><li>In addition, they contain, partially , the same documents that academic databases (but it is not sure and it is at a very different proportion, depending the field). </li></ul></ul></ul>September 2007 L. Codina. UPF Interdisciplinary CSIM Master
  15. 15. Conclusions - II <ul><li>Academic database will be essential for you for the reasons mentioned in previous slide… but the crude truth is that Academic Search Engines will make your life more easier. </li></ul><ul><li>In other words: probably, you will want to use search engine because its easiness, and probably you will not want to use databases because its (relative) difficulty, but you have to use it. </li></ul><ul><li>So… fortunately or unfortunately you will need both </li></ul>September 2007 L. Codina. UPF Interdisciplinary CSIM Master

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