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Telescope Bibliometrics 101

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Presentation given at Future Professional Communication in Astronomy II, April 2010, Cambridge, MA, USA. Authors; Uta Grothkopf & Jill Lagerstrom

Presentation given at Future Professional Communication in Astronomy II, April 2010, Cambridge, MA, USA. Authors; Uta Grothkopf & Jill Lagerstrom

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  • 1. Telescope Bibliometrics 101 Uta Grothkopf & Jill Lagerstrom ESO Library STScI Library esolib@eso.org lagerstrom@stsci.edu
  • 2. Overview• Bibliometric Studies ! What are they? ! Who is interested?• Linking Publications and Data ! Access how and where?• Telescope Bibliographies ! Who compiles them? How? ! Current tools, methodologies, features ! What’s next?FPCA-II, Cambridge, MA, April 2010
  • 3. Bibliometric studies• Metrics to measure productivity and impact through publications and citations• Long history (1960ies: Science Citation Index)• Large number of articles on this topic
  • 4. Typical measures Good Bad # Publications productivity no impact # Citations impact can be inflated Mean / median allows comparison of rewards low productivity cites per paper different ages ‘High-Impact Papers’ shows trends favors ‘hot topics’ determined by years of h-index productivity + impact operationFPCA-II, Cambridge, MA, April 2010
  • 5. Typical measures Good Bad # Publications productivity no impact are ! c # Citations impact can be inflated mean / median ew ith allows comparison of dl rewards low productivity n cites per paper different ages Ha ‘High-Impact Papers’ shows trends favors ‘hot topics’ determined by years of h-index productivity + impact operationFPCA-II, Cambridge, MA, April 2010
  • 6. Who is interested?Scientists, management, governing bodies, funding agencies who want to... ! Evaluate performance of telescopes and instruments ! Measure scientific output from observing programs ! Define guidelines for future facilities ! Compare in-house facilities with other observatories and telescopes ! Interconnect resources (Virtual Observatory) Observing programs Maximum return of science benefits from observing proposals Telescope bibliography Data archive Papers
  • 7. Linking publications and data (1) Access through observatories’ web sites http://www.eso.org/libraries/publicationlists.html
  • 8. Example: Chandra
  • 9. Example: HST
  • 10. Example: ESO
  • 11. Example: ESO Programs used in papers
  • 12. Example: ESO Access to proposal information
  • 13. Example: ESO Request data Other papers based on same program
  • 14. Linking publications and data (2) At the ADS / Filters sectionFPCA-II, Cambridge, MA, April 2010
  • 15. Linking publications and data (2) Access through the ADS / Filters sectionFPCA-II, Cambridge, MA, April 2010
  • 16. Prerequisites for telescope bibliographiesAccess to literature Semi-automated search tool Policy / selection criteria Data archive Tags / keywords / programs Database Programs Tags
  • 17. Prerequisites for telescope bibliographies And staff !
  • 18. Who compiles telescope bibliographies?• 2010 Survey by J. Lagerstrom, STScI Library Respondents: CFHT, Chandra, FUSE/Galex/IUE, ESO, Gemini, HST, ING, Keck, NOAO, NRAO, SDSS, Spitzer, Subaru, XMM Newton• Who does it? How many people are involved? 4 3 Technicalstaff Technical staff Admin.Asst. Admin. Asst. Library assistant Library assistant 2 Archivestaff Archive staff Astronomer Astronomer Librarian Librarian 1 0
  • 19. Which sources?• 30+ journals listed, only 4 in common A&A AJ ApJ / ApJS MNRAS• Print journals E-journals (pdfs) } Access to entire text of papers (incl. footnotes, figures, captions etc.) Journals’ web sites Entire article? ADS abstracts Only title, abstract, selected footnotes Self-reporting Rely on PIs / authors
  • 20. Search strategies• Observatory, telescope, instrument names• Science programs, surveys, archive names• Geographic locations• Concepts• Challenges: ! papers: missing references to obs identifiers ! publisher restrictions for downloading papers ! central full-text search feature at ADS?
  • 21. Tools of the tradeFull-text search tool (FUSE) Users: ESO, STScI, Gemini, Subaru, Carnegie Obs. coming soon: IUCAA
  • 22. Tools of the tradeESO Telescope Bibliography (telbib)
  • 23. Tools of the tradeESO Telescope Bibliography (telbib) Users: ESO, NRAO
  • 24. Author affiliations CitationsBibliographic PubMonth details + metadata from ADS Tags / keywords proIDs ObsMode ObsType
  • 25. Statistics / reports• Basic ESO Statistics http://www.eso.org/libraries/ ! Publication + citation statistics ! ESO and other observatories ! ESO Top 20 ! Instruments’ pub stats ! Further reading• regularly updated• other reports on demandFPCA-II, Cambridge, MA, April 2010
  • 26. What’s next?• Citations are problematic ! Incompleteness: listings often incomplete ! Incorrectness: incorrect citing, multiple journal abbreviations ! Citing behavior: cite well-known authors, friends citing friends ! Multi-author papers: self-cites (introduce normalized citation counts?)• Tracing usage and popularity ! Reads (ADS) ! Downloads (arXiv, Citebase) ! Forum discussions (e.g., CosmoCoffee)FPCA-II, Cambridge, MA, April 2010
  • 27. Citations vs. Reads
  • 28. Citations vs. Reads
  • 29. Citations vs. Reads
  • 30. Downloads from Citebase.org
  • 31. Discussions at CosmoCoffee.info
  • 32. Discussions at CosmoCoffee.info
  • 33. Ongoing projects• Further metadata from the ADS: ! Subject terms / keywords ! Full info re. citations (to eliminate self-cites) ! All available links (DOI, ePrintID etc.) ! Author gender (in collaboration with AuthorID projects?)• Additional internal links: ! Authors’ acknowledgments of observing time ! Fully link telbib records and ESO Press Releases ! Gather information on publication delay FPCA-II, Cambridge, MA, April 2010
  • 34. Thank you

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