Open Digital Libraries Edward A Fox Virginia Tech

Open Digital Libraries Edward A. Fox Virginia Tech, Dept. of Computer Science November 6, 2002 Name and University

Thesis Statement • • Open Digital Libraries (DLs) Open Archives Initiative (OAI) Protocol for Metadata Harvesting (PMH) Extending OAI-PMH provides the glue for building componentized DLs. • Lightweight protocols connect the components to support modular systems with good efficiency. November 6, 2002 Edward A. Fox, Virginia Tech 2

Research in a Nutshell • We build extensible modular systems with customizable services. • This supports interoperability and allows distributed development. • This is in use in www. cstc. org, American. South. org, www. citidel. org, … • Components include search, browse, annotate, editorial support, union, filter, whats-new, submit, rate, recommend, … November 6, 2002 Edward A. Fox, Virginia Tech 3

? Document 1010100101 Program 1010100101 Video 1010100101 Image 1010100101 0100101010 1001010101 010101 1010100101010 100101 01001010101 0101010101 users November 6, 2002 1010100101 0100101010 1001010101 01001010101 0101010101 100101010101 0101010101 digital objects Edward A. Fox, Virginia Tech 4

? ? Document 1010100101 0100101010 1001010101 010101 ? ? ? ? Program 1010100101 0100101010 1001010101 010101 Image 1010100101 0100101010 1001010101 010101 ? ? ? Video 1010100101 0100101010 1001010101 010101 componentized digital library November 6, 2002 Edward A. Fox, Virginia Tech 5

XPMH OA OA OA XPMH OA XPMH OA Document 1010100101 0100101010 1001010101 010101 PMH XPMH OA OA XPMH PMH Program 1010100101 0100101010 1001010101 010101 Image 1010100101 0100101010 1001010101 010101 Video 1010100101 0100101010 1001010101 010101 open digital library November 6, 2002 Edward A. Fox, Virginia Tech 6

OPEN ARCHIVE Extended OPEN ARCHIVE Open Digital Library Component November 6, 2002 Edward A. Fox, Virginia Tech 7

Example Open Digital Library ODLRecent USER INTERFACE Students and researchers ODLUnion PMH Filter PMH ODLUnion Browse Union Program ETD-2 1010100101 0100101010 1001010101 010101 PMH ODLBrowse ODLUnion Document ETD-1 1010100101 0100101010 1001010101 010101 PMH Filter Search PMH Image ETD-3 1010100101 0100101010 1001010101 010101 Video ETD-4 1010100101 0100101010 1001010101 010101 ODLSearch Digital Library for the Networked Digital Library of Theses and Dissertations (www. ndltd. org) ETD collections November 6, 2002 Edward A. Fox, Virginia Tech 8

Example Open Digital Library for the Computer Science Teaching Center (www. cstc. org) November 6, 2002 Edward A. Fox, Virginia Tech 9

Digital Library In A Box • http: //dlbox. nudl. org, part of NSF’s National Science Digital Library (www. nsdl. org), offers “Shrink-wrap” Open Digital Library Components. • Users install ready-made digital library solutions, or build their own from snaptogether components. November 6, 2002 Edward A. Fox, Virginia Tech 10

Benefit to AOL • AOL could rapidly develop prototypes for sophisticated systems. • AOL users could do the same. • Such OAI collections could be a new base of data for AOL services. • AOL could help/encourage its user community to build their own DLs and to share their data through OAI-PMH. November 6, 2002 Edward A. Fox, Virginia Tech 11

Contact Information Edward A. Fox Dept. of Computer Science, Virginia Tech +1 -540 -231 -5113 fox@vt. edu FAX: +1 -540 -231 -6075 http: //www. dlib. vt. edu/ November 6, 2002 Edward A. Fox, Virginia Tech 12