Tuesday, February 1, 2005

Google Scholar and the openly OpenURL extension: Open URL 0.1 and 1.0 #

Today, I've been looking at specific examples of OpenURLs generated by Openly's OpenURL Referrer  to understand the difference between v 0.1 and v 1.0 of OpenURLs. In the tradition of google vanity searches, I will use a search for Yee and Beaubien on Google Scholar as an example. With the Openly's OpenURL Referrer extension installed, I get the following OpenURLs: v 0.1 with the CDL OpenURL resolver v 1.0 with the sample sirsi resolver Now if I break down the pieces of respective OpenURLs to look how the key/value pairs compare between the two versions of OpenURL. The first table contains elements that have analogs between the two versions of OpenURL Thing 0.1 Thing 1.0 resolver http://ucelinks.cdlib.org:8888/sfx_local 1.0 resolver http://sirsi-resolver.sirsi.net/ sid openly:openurlref rfr_id info:sid/openly.com:openurlref genre article rft.genre article title Library%20Hi%20Tech rft.jtitle Library%20Hi%20Tech date 2004 rft.date 2004 atitle A%20preliminary%20crosswalk%20from%20METS%20to%20IMS%20content%20packaging rft.atitle A%20preliminary%20crosswalk%20from%20METS%20to%20IMS%20content%20packaging aulast Yee rft.aulast Yee auinit R rft.auinit R There are also extra terms in the OpenURL 1.0: url_ver Z39.88-2004 rft_val_fmt info:ofi/fmt:kev:mtx:journal rfe_id http%3A%2F%2Fscholar.google.com%2Fscholar%3Fhl%3Den%26lr%3D%26q%3Dyee%2Bbeaubien%26btnG%3DSearch rft_id http%3A%2F%2Fwww.ingenta.com%2Fisis%2Fsearching%2FExpand%2Fingenta%3Fpub%3Dinfobike%3A%2F%2Fmcb%2F238%2F2004%2F00000022%2F00000001%2Fart00008 url_ctx_fmt info:ofi/fmt:kev:mtx:ctx While we're at it, we should take a look at the type of URLs returned by GoogleScholar to get a feel for the type of screen-scraping that the extension has to do -- and the type of information that Google Scholar actually passes back: Yee and Beaubien http://scholar.google.com/url?sa=U&q=http://ieeexplore.ieee.org/iel6/22/24953/01127145.pdf http://scholar.google.com/url?sa=U&q=http://dx.doi.org/10.1126%252Fscience.280.5360.109 -- one with a DOI, which gets an extra id=doi:10.1126%2Fscience.280.5360.109 in OpenURL v0.1 and an extra rft_id=info:doi/10.1126%2Fscience.280.5360.109 in OpenURL 1.0 a reference with a PubMed identifier Once I now have seen working OpenURLs up close, it's good to take a look at the full range of possibilities, look at the table I borrowed from Ex Libris - OpenURL Syntax: These examples are instructive to me because they show working instances of OpenURLs, ones that don't try to show every possibility but just the core features.   Posted by Raymond Yee on 2/1/05; 5:37:54 PM from the Unclassified dept. Discuss

Bruce D'Arcus, the Holy Grail, and Piggy-Bank #

Bruce D'Arcus  writes about a goal many of us have: It is something like a holy grail for academics and researchers to be able to highlight content in a web page, or simply annotate them, while storing along with it complete citation-ready metadata. Nobody has quite done that yet, but these are a start. He points to the Piggy-Bank Extension, which I plan to look at. Piggy-Bank is "designed to let users of the Mozilla Firefox browser collect and browse "semantic data" linked from ordinary web pages" and makes use of RDF   Posted by Raymond Yee on 2/1/05; 11:36:53 AM from the Unclassified dept. Discuss