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1 2003 CrossRef Annual Member Meeting London Annual Member Meeting September 16, 2003 London Technology Update.

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Presentation on theme: "1 2003 CrossRef Annual Member Meeting London Annual Member Meeting September 16, 2003 London Technology Update."— Presentation transcript:

1 CrossRef Annual Member Meeting London Annual Member Meeting September 16, 2003 London Technology Update

2 CrossRef Annual Member Meeting London Status Operations Availability (1/03 – 8/03): 97.6% 1.7% downtime due to planned upgrades and only effected deposits Unplanned downtime mostly due to power failures Performance 1 successful query = avg. response time is seconds 1 failed query = avg. response time is 1.2 seconds Deposit performance depends on number of jobs in the Q (4 simultaneously) (50% 24hr) Resource loading System is approximately 60% utilized (main driver is the database machine) Heavy during 8AM- 8PM EST weekdays Weekend loading is < 10% Deposit processing accounts for ~ 5% of the load

3 CrossRef Annual Member Meeting London Improvements Hardware 3 new Dell servers to run Atypons Java code improved network configuration (introduced additional storage System Software Completed: DOI Overwrite, XML queries, OpenURL resolver, tracking ID Return of multiple hits Forward matching (query match alerts) Failed query reports, DOI history report Remaining: Real time query interface, handle synchronization Services Retrieve XML for a given DOIs Conflict summary reports DOI break down by journal title Free guest query Web based XML parser (for checking against the schema) Status

4 CrossRef Annual Member Meeting London Plans Hardware Upgrade database server (retire older machines / reduce data-center footprint) Increase redundancy (power and network connectivity) Add load balancer to the Web front end System Software Forward linking Multiple resolution - address metadata and infrastructure issues (a much broader issue than the impacts on CrossRef) Planning other 2004 changes (resiliency, status monitoring, Web service interface …) Services Offer Web seminars on specific technical topics Improve Browsable journal feature (add more accurate holdings data, merge MARC record information)

5 CrossRef Annual Member Meeting London Forward Matching Reduce the need for members to re-query CrossRef Before forward matching each member had to re-submit failed queries on a periodic basis Results in a higher than necessary query load on the system Reduces the overall matching rates Forward matching stores failed queries for subsequent evaluation (the CrossRef system will do the re-querying) Combines similar failed queries from all users into one query Only re-runs a query when a deposit triggers the chance for a match (based on journal title) Re-query load can be scheduled more efficiently Members will receive alerts (via ) when a DOI is found

6 CrossRef Annual Member Meeting London Failed Query Report In August out of 5,344,517 queries, matched 1,058,425 (20%) Title Not Found ISSN Not Found Title Found Ambiguous Results Not YearNot Vol.Not Page 12.3%51.9%8.3%9.7%15.4%2.4% In August: top 10 users not finding journal titles/ISSNs User Failed % Unknown J Title bayer53174,543 blackwell87147,424 aip8742,008 nature8935,847 springer6816,191 annual838,396 oup744,327 ppress633,901 creftest453,027 elsevier772,988 User Failed % Unknown J ISSN jstc83906,709 asob82233,029 bolognini8977,811 imd8951,652 loep8926,089 fdcg7926,077 cbs8926,074 iubremen8926,059 esade8926,035 essec8925,976

7 CrossRef Annual Member Meeting London

8 CrossRef Annual Member Meeting London Failed Query Report In August top 20 Titles not being found Surf Sci Society for Neuroscience Abstract Viewer and Itinerary Planner 4164 J IMMUNOL 8449 The Astrophysical Journal Letters 4080 AM J PHYSIOL 6201 Phys Lett B 3566 FASEB Journal 5991 Abstracts of Papers American Chemical Society 3432 CANCER RES 5927 Neurology 3315 Official Gazette of the United States Patent and Trademark Office Patents 5329 Journal of Nuclear Medicine 3133 J Allergy Clin Immunol 5025 Genetics 2849 Anesthesiology 4974 Phytopathology 2788 J Neurosci 4937 British Medical Journal 2405 Transplantation 4164 Anesthesia and Analgesia 2374 Title / ISSN Count

9 CrossRef Annual Member Meeting London Failed Query Report In August top 20 ISSNs not being found X X BMJ. British medical journal 245 Physical review B Condensed… 245 lancet 245 Advanced materials & processes 245 Chemical and engineering news 245 IBM technical disclosure bulletin Title / ISSN Count The query asked for (International ed.) Publisher deposited p: (Clinical research ed.) e: (London)

10 CrossRef Annual Member Meeting London Failed Query Report In August: top 20 Titles with inadequate coverage (e.g. year/volumes not deposited) Cell Neuron Blood Circulation Nature Gut Journal of the American Chemical Soc New England Journal of Medicine Science Molecular and Cellular Biology Proceedings of the National Academy of Sciences Journal of Virology Journal of Biological Chemistry Journal of Bacteriology The Lancet Journal of Experimental Medicine Journal of Clinical Investigation Development Gastroenterology The EMBO Journal Title / ISSN Count

11 CrossRef Annual Member Meeting London Depositor Report

12 CrossRef Annual Member Meeting London Guest Query

13 CrossRef Annual Member Meeting London Parameter Passing Allows the link source to pass information through the DOI resolver to the link target (very cool!) Based on OpenURL 1.0 Source Registered URL Target With Out Parameter Passing With Parameter Passing With Parameter Passing and a standard vocabulary Parameter passing (a DOI feature)

14 CrossRef Annual Member Meeting London Where to get help …


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