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System Update 2010 Annual Meeting

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System Update 2010 Annual Meeting

  1. 1. System Update 2010 Chuck Koscher Director of Technology ckoscher@crossref.org  Status  Rewrite  Quality
  2. 2. 0 1,000,000 2,000,000 3,000,000 4,000,000 5,000,000 6,000,000 7,000,000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 Cur r ent Year Backf i l e  Deposits
  3. 3. Metadata Queries 0 50,000,000 100,000,000 150,000,000 200,000,000 250,000,000 300,000,000 350,000,000 400,000,000 450,000,000 2002 2003 2004 2005 2006 2007 2008 2009 2010 Total Matches  Queries  DOI Queries: 2009 73,414,782 2010 70,940,700  A lot of users pulling metadata
  4. 4.  Resolutions
  5. 5.  System Rewrite  Query system is done (1st revision anyway)  Improved performance (DOI queries take 10-20msec Vs 200+ msec)  Aggregated forward link alert emails (no more email storms)  Integrated formatted citation search <query> <unstructured_citation> Clow GD, McKay CP, Simmons Jr. GM, and Wharton RA, Jr. 1988. Climatological observations and predicted sublimation rates at Lake Hoare, Antarctica. Journal of Climate 1:715-728 </unstructured_citation> </query> </body> <citation_list> <citation key="ref1"> <unstructured_citation> Clow GD, McKay CP, Simmons Jr. GM, and Wharton RA, Jr. 1988. Climatological observations and predicted sublimation rates at Lake Hoare, Antarctica. Journal of Climate 1:715-728 </unstructured_citation> </citation> </citation_list> Query Reference Deposit
  6. 6.  System Rewrite  Deposit system  Design specification is underway 2010 2011 Design Build DB migration Shadow deployment Full deployment  Continue co-development with Atypon  CrossRef deploys and operates  CrossRef owns IP, has access to source code, can initiate/make changes
  7. 7.  System Rewrite  Deposit system – notable changes  Better title management  Support date range based ownership  Ownership by publisher, not prefix  Allow for co-owners  Improve deposit workflow  Validate XML during upload.  Separate Handle registration and CrossRef registration.  Provide a daily activity digest.  Generic DOI relationships (expand upon components) NISO/NFAIS Supplemental Journal Article Materials Project  Over-haul conflicts  Minimize nuisance conflicts  Change default behavior to prevent conflicts (reject) especially across publishers. Selectively allow create & correct model
  8. 8.  Quality  DOI persistence is strong, but could be better  Our tests show 5-10% of tested DOIs fail to reach intended target  Independent tests show 3% of DOIs are broken.  Metadata is good enough for linking (20-40% matching rate)  … but increasingly used for display  Biggest offenses : Author initials, no article title (min length=0)  Pubmed data viewed by some as far more reliable.  NFAIS Best Practices for Publishing Journal Articles http://www.nfais.org/files/file/Best_Practices_Final_Public.pdf
  9. 9. www.crossref.org/help support.crossref.orgNew!
  10. 10. www.crossref.org/help support.crossref.orgNew!

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