CYCLADES An Open Collaborative Virtual Archive Environment Umberto Straccia straccia@iei.pi.cnr.it IEI-CNR (Italy) February, 2001

Outline Project Overview Project Activities and Responsibility Project Schedule February, 2001

Project Overview February, 2001

(Preliminary: the scenario) Communities/Groups of users User Search & Browse Information sources DIGITAL ARCHIVE 1 DIGITAL ARCHIVE 2 DIGITAL ARCHIVE n Large, heterogeneous, multidisciplinary digital archives distributed over the Web February, 2001

Development of an open collaborative virtual archive environment Project Goal Development of an open collaborative virtual archive environment supporting Individual users Communities/Groups of users interacting with Large, heterogeneous, multidisciplinary digital archives distributed over the Web February, 2001

distributed over the Web Logical View Communities/Groups of users User CYCLADES Virtual Archive Environment DIGITAL ARCHIVE 1 DIGITAL ARCHIVE 2 DIGITAL ARCHIVE n ... Large, heterogeneous, multidisciplinary digital archives distributed over the Web February, 2001

CYCLADES The Digital Archives CYCLADES functionality CYCLADES architecture February, 2001

The Digital Archives CYCLADES will provide access to the Digital Archives compliant with the Open Archive Initiative February, 2001

the Open Archives Initiative Agreement between several Digital Archives in order to provide interoperability The specs give data providers (individual archives) easy-to-implement mechanisms for making the documents’ metadata in their archives externally available This external availability then makes it possible for service providers to build higher levels of functionality FOR MORE INFO... http://www.openarchives.org February, 2001

OAI: list of some compliant data providers ArchiveID Description arXiv physics, mathematics, non-linear systems and computer science clinmed Clinical Medicine and Health Research Netprints CSTC Computer Science Teaching Center Digital library of peer-reviewed teaching resources for computer science educators HUBerlin Humboldt University at Berlin/Germany Document Server NACA NACA Technical Report Server Scanned reports of the National Advisory Committee for Aeronautics (1917-1958); the predecessor organisation to NASA. NCSTRL Networked Computer Science Technical Reference Library NDLTD Networked Digital Library of Theses and Dissertations WCR Web Characterisation Repository database of meta-information relating to trace files, tools and publications that are relevant to characterisation of the World Wide Web February, 2001

OAI specs: some functionality List Identifiers List Records Get Record Example http://arXiv.org/oai1?verb=GetRecord&metadataPrefix=oai_dc&identifier=oai:arXiv:cond-mat/0006408 February, 2001

Identifier : oai:arXiv:cond-mat/0006408 Datestamp : 2001-01-31 Header: Identifier : oai:arXiv:cond-mat/0006408 Datestamp : 2001-01-31 Metadata: oai_dc: title: Charge-ordering phase transition and order-disorder effects in the Raman spectra of NaV2O5 creator: Konstantinovic, M. J. creator: Isobe, M. creator: Ueda, Y. subject: Strongly Correlated Electrons; Disordered Systems and Neural Networks description: In the ac polarized Raman spectra of NaV2O5 we have found anomalous phonon broadening, and an energy shift of the low-frequency mode as a function of the temperature. These effects are related to the breaking of translational symmetry, caused by electrical disorder that originates from the fluctuating nature of the V {4.5+} valence state of vanadium. The structural correlation length, obtained from comparisons between the measured and calculated Raman scattering spectra, diverges at T< 5 K, indicating the existence of the long-range charge order at very low temperatures, probably at T=0 K. date: 2000-06-26 type: e-print identifier: http://arXiv.org/abs/cond-mat/0006408 February, 2001

CYCLADES Virtual Archive Environment CYCLADES: as a service provider Large, heterogeneous, multidisciplinary digital archives CYCLADES Virtual Archive Environment ... Common Interface Archive2 ArchiveN Archive1 OAI Archives data providers service provider February, 2001

CYCLADES Virtual Archive Environment Functional View Communities/Groups of users User Search&Browse Personalization Collaboration Recommendation CYCLADES Virtual Archive Environment Virtual Collection DIGITAL ARCHIVE 1 DIGITAL ARCHIVE 2 DIGITAL ARCHIVE n ... Large, heterogeneous, multidisciplinary digital archives February, 2001

Virtual Collections (roughly) Virtual Collection: a set of metadata records collected together, according to some criteria, from the archives + set of functionality over records Virtual Collection VC1 VC2 VC3 Exported data Archive1 Common Interface Archive2 ArchiveN OAI Archives February, 2001

Search & Browse (roughly) Search: typical Search using the virtual collection’s search fields (e.g. author, title, abstract) Query formulation through browsing Browse Search Schema Attribute VirtualCollection = “Logic”, Author = “Straccia”, Abstract = “Fuzzy Logic” Author Abstract Title ... Castelli Straccia Thanos ... February, 2001

Personalization (roughly) Information Retieval Umberto’s folder Digital Libraries Logics for Uncertainity and Imprecision Fuzzy Logic Possibilistic Logic Probabilistic Logic User topics of interest maybe managed similarly to e-mail folders Service learns the user information needs automatically New data is classified into the right topic folder automatically February, 2001

Collaboration (roughly) A shared working space can be created by groups referencing: user documents a virtual archive recommendations, related links, annotations, ratings, … VC Based on BSCW (Basic Support for Cooperative Work) To be read Very interisting doc http://infohunter.iei.pi.cnr.it Shared working space February, 2001

Recommendation (roughly) The user is automatically notified about new data that the system judges relevant User prefs Group prefs + = Recommendation February, 2001

CYCLADES: Architecture (starting point) Modular Basic functionality are allocated on servers Distributed Servers maybe over the Web Open new services can easily be added February, 2001

OAI Archives Users Archive1 Archive2 ArchiveN Cyclades EU Side Recommendation Service Collaborative Work Service Personalization Service Query & Browse Service Cyclades Mediator Service Collection Service Access Service US Side Archive1 Common Interface Common Interface Archive2 ArchiveN Common Interface OAI Archives February, 2001

Project Activities and Responsibilities February, 2001

February, 2001

Project Schedule February, 2001

1.2.2001 - 31.7.2001 1.2.2001 - 31.7.2003 February, 2001