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Researcher Identifiers and National Federated Search Portal for Japanese Institutional Repositories


OR2012, The 7th international conference on Open Repositories …

OR2012, The 7th international conference on Open Repositories
09 - 13/Jul/2012, the University of Edinburgh, UK
RF3: Pecha Kucha – National Infrastructures, 11/Jul/2012: 11:00am – 12:30pm

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  • 1. Researcher Identifiers and National Federated Search Portalfor Japanese Institutional RepositoriesKei Kurakawa1, Hideaki Takeda1, Ryo Shiozaki1, Shun Morimoto2, and Hideki Uchijima2 1: National Institute of Informatics, Japan 2: Kanazawa University Library, Japan OR2012, The 7th international conference on Open Repositories 09 - 13/Jul/2012, the University of Edinburgh, UK RF3: Pecha Kucha – National Infrastructures, 11/Jul/2012: 11:00am – 12:30pm
  • 2. Name disambiguation• Name ambiguity problem is caused by – the same family name and the same first name, maiden name usage, pen name, – character variants in Kanji (for Japanese), – and a variety of name formats for each journals• To assign identifier for researcher is an answer.• If this problem is solved, it would be available to – exactly compile a list of research achievement, – exactly assess contributions of the researcher, – exactly trace development paths by the researcher, – and exchange exact information of the researcher in various scholarly communication scenes. 2
  • 3. Assigning identifiers for authors of repository items• DAI (Digital Author Identifier), the SURF foundation, the Netherlands• Names Project, mimas, University of Manchester, UK• Networking Names, OCLC• ORCID, ORCID Inc.• Researcher Name Resolver, NII, Japan 3
  • 4. Objective ofthe Researcher Name Resolver (RNR)• Basic function as giving – Identifiers of Japanese researcher on the Web – Web resource links for researcher• Implementations – Researcher URI – Identifier management – Researcher pages – Web services• Applications – Name authority for external systems – Researcher resource link resolver 4
  • 5. Researcher identifier scheme and management• Identifier is of the form, – 13-digit number – namely, Researcher Name Resolver ID. –• Identifier management – Identifiers of a researcher are grouped and aliased to a representative of them 5
  • 6. Prior registration• As priming a pump effect, – Registrants of the database of Grants-in-Aid for Scientific Research in Japan, KAKEN are registered in RNR – 200,882 researchers are registered at 2012-07-06• Extracted data attributes – Names (Japanese Kanji character, Japanese phonetic character, English character) – Affiliated institution (last), department, job title – Grants-in-Aid for Scientific Research Researcher Number – (Research fields of Grants-in-Aid for Scientific Research) – (Research keywords of Grants-in-Aid for Scientific Research) 6
  • 7. Web resource links for researcherDirect links to external systems Planned Database of Grants-in-Aid Academic information resource for Scientific Research portal and link system of Japan The biggest researcher directory The biggest article search of Japan published in Japan Campus Directories Planned 7
  • 8. Batch processing approach• To make links to external systems, the RNR – loads profile data, • ResearcherID based researcher profiles including a list of external identifiers – uses identifier mapping rules, • RNR identifier is implicitly reuse of KAKEN identifier • CiNii identifier is implicitly reuse of KAKEN identifier – and, loads external identifier mapping lists • J-GLOBAL identifier to KAKEN identifier • ReaD&Researchmap identifier to KAKEN identifier 8
  • 9. Crawling approach• To build direct links to campus directories, the RNR – crawled campus directories, – built a list of researcher pages with names, – and identify the researchers over RNR registrants• To identify researchers, the RNR checks institution and whether or not – Kanji name is the same, – institution is the same, – and, the name is unique in the institution.• In fact, – 226 university campus directories were crawled. – 102,949 researcher pages were indexed. – RNR has 23,252 links to those campus directories. – It is high precision rate, but low recall rate. – For improvement, machine learning is a promising approach. 9
  • 10. Researcher page Researcher name (Kanji, Katakana, English) Researcher Researcher Name Resolver ID basic information Researcher URI Direct links Search linksResearch fields ofGrants-in-aid forScientific ResearchResearch keywords ofGrants-in-aid forScientific ResearchURIof this document 10
  • 11. Web services• Researcher URI• OpenSearch External direct links for the researcher• Linked data structure• RDF export• URL Redirection Redirection service URL for a researcher Ex. esolver&id=1000080252831&target=kaken Campus Directories 11
  • 12. Application for JAIRO• JAIRO is the national federated search portal.• RNR is as being name authority for JAIRO.• What repository managers do for the work is – to embed an “id” attribute in the “creator” field of metadata JAIRO (IRDB) harvests, then 1. put a RNR URI in “id” attribute value field, or 2. put anyURI for researcher in “id” attribute value field, and upload researcher profiles with external ids table on RNR 12
  • 13. Name disambiguation framework 13
  • 14. Harvested metadata embeddedwith Researcher URI (anyURI) <?xml version="1.0" encoding="UTF-8" ?> <OAI-PMH xmlns="" xmlns:xsi="" xsi:schemaLocation=""> junii2 extension <responseDate>2011-05-26T13:34:09Z</responseDate> <request metadataPrefix="junii2" verb="GetRecord" identifier=""></request> <GetRecord> <record> <header> <identifier></identifier> <datestamp>2011-05-22T08:02:22Z</datestamp> <setSpec>hdl_10297_24</setSpec> </header> <metadata> <junii2 xmlns="" xmlns:xsi="" xsi:schemaLocation=""> <title>Orientation-dependent epitaxial growth of GaAs by current-controlled liquid phase epitaxy</title> <creator>Mouleeswaran, D.</creator> <creator id=“”>Koyama, T.</creator> <creator id=“”>Hayakawa, Yasuhiro</creator> <NDC>459</NDC> <description>The orientation dependence of the selective epitaxial growth of Gallium Arsenide (GaAs) has been investigated to achieve a thick epitaxial layer for application to X-ray detectors. Selective epitaxial growth was carried out on patterned GaAs with [0 1 1], [0 1 2], [0 1 0], [0 1 −2], [0 1 −1] and their equivalent seed orientations by current-controlled liquid phase epitaxy (CCLPE). SiO2 was used as a mask layer to fabricate the various seed orientations on the Si-doped GaAs (1 0 0) substrate and various growth periods and current densities were considered. Solute transport in the solution was enhanced by the electromigration of solute by an applied DC electric current, which caused an incremental growth in vertical and lateral directions in all orientations. The<creator id=“”>Koyama, T.</creator> highest vertical thickness of 268 μm in the [0 1 −1] orientation and the largest lateral growth of 318 μm in the [0 1 2] orientation were achieved at 7.5 A cm−2 current density for 6 h. The seed aligned in the [0 1 2] orientation was favorable for high lateral growth of GaAs. The [0 1 1], [0 1 0] and [0 1 −2] seed<creator id=“”>Hayakawa, Yasuhiro</creator> orientations were suitable for application in a GaAs X-ray detector.</description> <publisher>Elsevier</publisher> <NIItype>Journal Article</NIItype> <format>application/pdf</format> <URI></URI> <fullTextURL></fullTextURL> <jtitle>Journal of Crystal Growth</jtitle> <issn>00220248</issn> <NCID>AA00696341</NCID> <volume>321</volume> <issue>1</issue> <spage>85</spage> <epage>90</epage> <dateofissued>2011-04-15</dateofissued> <language>eng</language> <doi>info:doi/10.1016/j.jcrysgro.2011.02.026</doi> <rights>Copyright © 2011 Elsevier B.V. All rights reserved.</rights> <textversion>author</textversion> </junii2> </metadata> </record> </GetRecord> </OAI-PMH> 14
  • 15. How author identifier changes UI?• JAIRO is an example for exploring scholarly knowledge.• We assume that there are two modes of knowledge exploration, i.e. – basically, we use keywords for search, and – sometimes, we use author name for search.• When we use author id for search, – we expect to get a exact list of articles of the researcher – therefore, we could trace a research development path of the researcher.• New UI ought to be designed, depending on search conditions with or without author identifier. 15
  • 16. Search by author Suggest authors with ID 16
  • 17. Search results (grouping) Grouping Selection Item type grouping Institution grouping 17
  • 18. Privacy and data protection• On dealing with researcher profiles and identifiers, we should take care of privacy laws.• Related acts in Japan – Act on the Protection of Personal Information (effect from 2005) • Act on the Protection of Personal Information Held by Administrative Organs • Act on the Protection of Personal Information Held by Independent Administrative Agencies, etc. • Regulations on the Protection of Personal Information• Phase of practice Exclusion from application – Academic research (feasibility study) – Business• Current status in Japan – It is not enough to have discussions on privacy and data protection of researcher profiles for repositories. – License is not explicit on the researcher profiles for repositories. 18
  • 19. Future work• To make linkage between RNR and external global services, e.g. ORCID, Microsoft Academic Search• To improve precision/recall rate of linkage• To state privacy and data protection matter• To widely promote our activity to put author identifiers in bibliographic metadata 19
  • 20. Summary• Identifier for researcher is required to solve name ambiguity problem.• Researcher Name Resolver deals with identifiers for researchers in Japan. – It manages researcher identifiers. – It shows researcher profile on researcher pages. – It gives links on researcher pages to external systems – It provides relevant web services.• When RNR functions as name authority for JAIRO, it provides a search by author identifier. 20