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Ray Denenberg

Workshop 20. Metasearch - the NISO Initiative. March 25, 2006; Washington. Ray Denenberg. Ralph LeVan. Metasearch. …. Also known as. parallel search federated search broadcast search cross-database search. NISO: Definition, Problem, Challenge. NISO Definition

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Ray Denenberg

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  1. Workshop 20 Metasearch - the NISO Initiative March 25, 2006; Washington Ray Denenberg Ralph LeVan

  2. Metasearch

  3. …. Also known as • parallel search • federated search • broadcast search • cross-database search

  4. NISO: Definition, Problem, Challenge • NISO Definition • “search and retrieval spanning multiple databases, sources, platforms, protocols, and vendors at one time.” • the Problem ..... • Current systems require users to know how to select, access and search specific databases. • and the corresponding Challenge ..... • To create an environment that helps users find what they are seeking while minimizing what they need to know

  5. NISO: “Why Bother?” • Because most patrons do not care where information is or who packaged it. • Because Google cannot do it all.

  6. NISO Metasearch Initiative: Goals • metasearch service providers • offer more effective and responsive services • content providers • deliver enhanced content • protect their intellectual property • libraries • deliver services that distinguish them from Google and other free web services.

  7. Metasearch Topological Entities Meta- searcher Client Database

  8. Metasearch Topological Model Database Meta- searcher Client Database Database

  9. Recall Goals: • metasearchservice providers to offer more effective and responsive services • content providers to deliver enhanced content and protect their intellectual property • libraries to deliver services that distinguish them from Google and other free web services.

  10. Topological Client Metasearcher Database NISO Defined: Library Metasearch Provider Content Provider Entities

  11. offer more effective and responsive services deliver “distinguished” services deliver enhanced content; protect intellectual property Meta- searcher Client Database Contentprovider Service provider Library

  12. Protocol Model Database Meta- searcher Client Database Protocol Database Protocol

  13. Metasearch Protocol Model Database Meta- searcher Client Database Protocol Database Protocol

  14. Metasearch Protocol Database Meta- searcher Database Database Protocol

  15. NISO Metasearch Initiative

  16. Metasearch Initiative Committee Charge • identifying/developing standards/ best practices to improve interoperability between metasearch engines, and content providers • identifying a simple search/retrieve protocol to help database providers more effectively interoperate with metasearching applications.

  17. Metasearch Initiative Committee Charge - Boiling it Down • interoperability • between metasearch engines and content providers. • protocol • Identifying one - for interoperability between metasearch engines and content providers.

  18. Task Groups • TG 1: Access Management • TG2: Collection Description • TG 3: Search/Retrieve

  19. TG 1: Access Management • Authentication • Authorization

  20. Potential Authentication Technologies. • Non-authenticated identification • IP recognition • Proxy Servers • Referring URL • Embedded data in URL • Vendor provided Javascript • Cookies • Shouting • Proprietary APIs • NCIP. SIP2. • LDAP • Shibboleth • Kerberos • Athens (UK) . • PAPI • Tequila

  21. TG1 Recommendations • Now • IP authentication • Username / Password • Potential for the future • Shibboleth

  22. TG2: Collection Description Service Description: used by applications to determine how to access remote services. Collection Description: used by humans or applications to select collections from those made available by a metasearch service.

  23. TG 3: Search/Retrieve • Describe current practice….. • vocabulary ….. • template …… • Inventory …… • Citation level data elements • Investigate Result Set and Record level metadate • Review SRW/SRU and recommend modifications

  24. TG 3: Search/Retrieve • Citation level data elements • Investigate Result Set and Record level metadata • Review SRW/SRU and recommend modifications

  25. Citation Level Data Elements • http://www.niso.org/standards/resources/MI-Citation_Elements_v1.pdf

  26. Result Set and Record level metadata

  27. Result Set metadata • Branding • Clustering • Database name • Diagnostic messages • List of terms • Postings, count by term • Record count • Resources used • Result status • Sort order

  28. Record Level metadata • Application URI • Character Set • Constraints • Cost Info • Dates (creation, last modified, reviewed) • Language • Position in result set • Processing instructions • Rank • Score • Size

  29. Review SRW/SRU and recommend modifications

  30. (None.)

  31. And Along Comes ......

  32. Metasearch XML Gateway “MXG”

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