February, 20011 CYCLADES An Open Collaborative Virtual Archive Environment Umberto Straccia straccia@iei.pi.cnr.it IEI-CNR (Italy)

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February, 20011 CYCLADES An Open Collaborative Virtual Archive Environment Umberto Straccia straccia@iei.pi.cnr.it IEI-CNR (Italy) Slide 2 February, 20012 Outline Project Overview Project Activities and Responsibility Project Schedule Slide 3 February, 20013 Project Overview Slide 4 February, 20014 (Preliminary: the scenario) DIGITAL ARCHIVE 1 DIGITAL ARCHIVE 2 DIGITAL ARCHIVE n Large, heterogeneous, multidisciplinary digital archives distributed over the Web Information sources User Communities/Groups of users Search & Browse Slide 5 February, 20015 Project Goal Individual users Communities/Groups of users Development of an open collaborative virtual archive environment supporting interacting with Large, heterogeneous, multidisciplinary digital archives distributed over the Web Slide 6 February, 20016 CYCLADES Virtual Archive Environment DIGITAL ARCHIVE 1 DIGITAL ARCHIVE 2 DIGITAL ARCHIVE n... Large, heterogeneous, multidisciplinary digital archives distributed over the Web User Communities/Groups of users Logical View Slide 7 February, 20017 CYCLADES The Digital Archives CYCLADES functionality CYCLADES architecture Slide 8 February, 20018 The Digital Archives CYCLADES will provide access to the Digital Archives compliant with the Open Archive Initiative Slide 9 February, 20019 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 http://www.openarchives.org FOR MORE INFO... Slide 10 February, 200110 OAI: list of some compliant data providers ArchiveIDDescription arXiv physics, mathematics, non-linear systems and computer science clinmedClinical Medicine and Health Research Netprints CSTCComputer Science Teaching Center Digital library of peer-reviewed teaching resources for computer science educators HUBerlin Humboldt University at Berlin/Germany Document Server NACANACA 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 WCRWeb Characterisation Repository database of meta-information relating to trace files, tools and publications that are relevant to characterisation of the World Wide Web Slide 11 February, 200111 OAI specs: some functionality List Identifiers List Records Get Record Example http://arXiv.org/oai1?verb=GetRecord&metadataPrefix=oai_d c&identifier=oai:arXiv:cond-mat/0006408 Slide 12 February, 200112 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 Slide 13 February, 200113 Large, heterogeneous, multidisciplinary digital archives CYCLADES Virtual Archive Environment... Common Interface Archive 2 Archive N Archive 1 Common Interface OAI Archives data providers service provider CYCLADES: as a service provider Slide 14 February, 200114 DIGITAL ARCHIVE 1 DIGITAL ARCHIVE 2 DIGITAL ARCHIVE n... Large, heterogeneous, multidisciplinary digital archives Communities/Groups of users Functional View CYCLADES Virtual Archive Environment User Virtual Collection Search&BrowsePersonalizationRecommendationCollaboration Slide 15 February, 200115 Virtual Collections (roughly) Virtual Collection: a set of metadata records collected together, according to some criteria, from the archives + set of functionality over records Archive 1 Common Interface Archive 2 Archive N Common Interface OAI Archives VC1 VC2 VC3 Virtual Collection Exported data Slide 16 February, 200116 Search & Browse (roughly) Search: typical Search using the virtual collection s search fields (e.g. author, title, abstract) Query formulation through browsing VirtualCollection = Logic, Author = Straccia, Abstract = Fuzzy Logic Search Browse SchemaAttribute Author Abstract Title...Castelli Straccia Thanos... Slide 17 February, 200117 Personalization (roughly) 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 Information Retieval Umbertos folder Digital Libraries Logics for Uncertainity and Imprecision Fuzzy Logic Possibilistic Logic Probabilistic Logic Slide 18 February, 200118 Collaboration (roughly) A shared working space can be created by groups referencing: user documents a virtual archive recommendations, related links, annotations, ratings, VC Shared working space http://infohunter.iei.pi.cnr.it Very interisting doc To be read Based on BSCW (Basic Support for Cooperative Work) Slide 19 February, 200119 Recommendation (roughly) The user is automatically notified about new data that the system judges relevant User prefs + Group prefs = Recommendation Slide 20 February, 200120 CYCLADES: Architecture (starting point) Modular Basic functionality are allocated on servers Distributed Servers maybe over the Web Open new services can easily be added Slide 21 February, 200121 Recommendation Service Collaborative Work Service Personalization Service Query & Browse Service Cyclades Mediator Service Collection Service Access Service OAI Archives Archive 1 Common Interface Archive 2 Archive N Common Interface US Side EU Side Users Slide 22 February, 200122 Project Activities and Responsibilities Slide 23 February, 200123 Slide 24 February, 200124 Project Schedule Slide 25 February, 200125 1.2.2001 - 31.7.20011.2.2001 - 31.7.2003