February, 2001 1

CYCLADESCYCLADESAn Open Collaborative Virtual Archive EnvironmentAn Open Collaborative Virtual Archive Environment

Umberto Straccia

straccia@iei.pi.cnr.it

IEI-CNR (Italy)

February, 2001 2

OutlineOutline

Project OverviewProject Activities and ResponsibilityProject Schedule

February, 2001 3

Project OverviewProject Overview

February, 2001 4

(Preliminary: the scenario)(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 usersSearch &

Browse

February, 2001 5

Project GoalProject 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

February, 2001 6

CYCLADES Virtual Archive Environment

DIGITAL ARCHIVE

1

DIGITAL ARCHIVE

2

DIGITAL ARCHIVE

n...

Large, heterogeneous, multidisciplinary digital archives distributed over the Web

UserCommunities/Groups

of users

Logical ViewLogical View

February, 2001 7

CYCLADESCYCLADES

The Digital ArchivesCYCLADES functionalityCYCLADES architecture

February, 2001 8

The Digital ArchivesThe Digital Archives

CYCLADES will provide access to the Digital Archives compliant with the Open Archive Initiative

February, 2001 9

the Open Archives Initiativethe 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...

February, 2001 10

OAI: list of some compliant data providersOAI: list of some compliant data providers

ArchiveID DescriptionarXiv physics, mathematics, non-linear systems and computer scienceclinmed Clinical Medicine and Health Research NetprintsCSTC 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 LibraryNDLTD Networked Digital Library of Theses and DissertationsWCR 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 11

OAI specs: some functionalityOAI 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 12

Header: Identifier : oai:arXiv:cond-mat/0006408 Datestamp : 2001-01-31Metadata: 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 correlationlength, 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: 2000-06-26type: e-print identifier: http://arXiv.org/abs/cond-mat/0006408

February, 2001 13

Large, heterogeneous, multidisciplinary digital archives

CYCLADES Virtual Archive Environment

...

Common Interface

Archive2

ArchiveN

Archive1

Common Interface

Common InterfaceOAI Archives

data providers

service provider

CYCLADES: as a service providerCYCLADES: as a service provider

February, 2001 14

DIGITAL ARCHIVE

1

DIGITAL ARCHIVE

2

DIGITAL ARCHIVE

n...

Large, heterogeneous, multidisciplinary digital archives

Communities/Groups of users

Functional ViewFunctional View

CYCLADES Virtual Archive

Environment

User

Virtual Collection

Search&Browse Personalization RecommendationCollaboration

February, 2001 15

Virtual Collections (roughly)Virtual Collections (roughly)

Virtual Collection: a set of metadata records collected together, according to some criteria, from the archives + set of functionality over records

Archive1

Common Interface

Common Interface

Archive2

ArchiveN

Common InterfaceOAI

Archives

VC1 VC2

VC3

Virtual Collection

Exported data

February, 2001 16

Search & Browse (roughly)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 BrowseSchema Attribute

AuthorAuthorAbstractTitle...

CastelliCastelliStracciaThanos...

February, 2001 17

Personalization (roughly)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

Umberto’s folder Digital

LibrariesLogics for

Uncertainity and

Imprecision

Fuzzy Logic

Possibilistic Logic

Probabilistic Logic

February, 2001 18

Collaboration (roughly)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 docTo be read

Based on BSCW(Basic Support for Cooperative Work)

February, 2001 19

Recommendation (roughly)Recommendation (roughly)

The user is automatically notified about new data that the system judges relevant

User prefs

+

Group prefs

= Recommendation

February, 2001 20

CYCLADES: Architecture (starting point)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 21

Recommendation Service

Collaborative Work Service

Personalization Service

Query & Browse Service

Cyclades Mediator Service

Collection Service

Access Service

OAI ArchivesArchiv

e1

Common Interface

Common Interface

Archive2

ArchiveN

Common Interface

US Side

EU Side

Users

February, 2001 22

Project Activities and Project Activities and ResponsibilitiesResponsibilities

February, 2001 23

WP1: User Requirements FORTH T1.1 Collection FORTH T1.2 Analysis FORTH

WP2: System Specification UNIDO T2.1: Functional Spec UNIDO T2.2: Architectural Spec UNIDO

WP3: System Development CNR T3.1: Mediator Service FORTH T3.2: Access Service UNIDO T3.3: Collection Service CNR T3.4: Personalisation Service CNR T3.5: Recommendation Service GMD T3.6: Collaborative Work Service GMD T3.7: Query&Browse Service UNIDO

WP4: Integration&Testing&Revision GMD T4.1: System Integration T4.2: System Testing T4.3: System Revision

W5: System Validation UNIDO T5.1 Performance Evaluation

WP6: System Experimentation GMD T6.1: Exp.1, within ERCIM T6.2: Exp. 2, ,within DELOS (NoE)

WP7: Dissemination&Exploitation CNR T7.1: Dissemination T7.2: Exploitation Planning

WP8: Cyclades-Oai Coordination CNR T8.1: Monitoring the Oai progresses

WP9: Project Management ERCIM T9.1: Technical Management T9.2: Administrative Management

February, 2001 24

Project ScheduleProject Schedule

February, 2001 25

WP1 User RequirementsT1.1 User Requirements CollectionT1.2 User Requirements Analysis

WP2 System SpecificationT2.1 Functional SpecificationT2.2 Architectural Specification

WP3 System DevelopmentT3.1 Mediator ServiceT3.2 Access ServiceT3.3 Collection ServiceT3.4 Personalisation ServiceT3.5 Recommendation ServiceT3.6 Collaborative Work ServiceT3.7 Query & Browse Mediator Service

WP4 System Integrating, Testing, RevisionT4.1 System IntegrationT4.2 System TestingT4.3 System Revision

WP5 System ValidationT5.1 System Performance Evaluation

WP6 System ExperimentationT6.1 IT Consortium ExperimentationT6.2 NoE Experimentation

WP7 Dissemination & ExploitationT7.1 DisseminationT7.2 Exploitation Planning

WP8 CYCLADES-OAi CoordinationT8.1 CYCLADES-OAi Coordination

WP9 Project ManagementT8.1 Scientific ManagementT8.2 Administrative Management

Y3/ 1Y1/ 1 Y1/ 2 Y2/ 1 Y2/ 2

1.2.2001 - 31.7.2001 1.2.2001 - 31.7.2003