OAIster- What's with the Weird Name-.ppt
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1、OAIster: Whats with the Weird Name?,Kat Hagedorn UM Library Information Technology November 28, 2005,What is OAIster?,Is/was a means for UM to test the OAI protocol (hence the name) A method for sharing metadata among institutions and groups of people A means of developing a search service for end-u
2、sers worldwide,Basics of OAI,What does OAIster collect?,Harvests all metadata from all OAI data providers (within reason) Only keeps metadata that points to digital objects, e.g., articles, photographs, datasets, etc. in digitized form All available via search service,Searching OAIster,Time to show
3、off OAIster http:/www.oaister.org/,A little history,Service is now 3.5 years old Started with 66 data providers and a little over 200K records Now have 572 data providers and “a little” over 6 million records 37% US, 63% international,Visibility of OAI,Surprising who hasnt made their metadata sharea
4、ble through OAI Harvard, Yale, Stanfordthe big ones Initially perplexing, but now clearer: always done at the end only recently thought of at initiation of projects truthfully, many institutions not collaborative,Examples of data providers,Many data providers are huge, e.g., arXiv: physics preprint
5、and postprint articles pubmed: medical articles, although restricted pictureaustralia: images from govt and academic institutions in Australia lcoa: Library of Congress digital archives usc: U South California census data,Examples of data providers,Most are small, though Many around 100 records Valu
6、e of making their records available increased visibility inclusion in bigger search service than theirs incorporation in Yahoo! Search,Yahoo! Search,Two years ago, collaborated with team at Yahoo! Search to send our metadata to them for indexing e.g., “gardens at albury” in Yahoo! Search know its no
7、t static html robotingIspartOf Victorian Railways collection. Many, many more hits Also send metadata to Google,System design,UM harvester,Record storage,XSLT transformation tool,BibClass indexes,OAI-enabled DC records,Non-OAI-enabled DC records,XSL stylesheets (per source type),Search interface (XP
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