1. CYCLADES An Open Collaborative Virtual Archive Environment
Umberto Straccia
IEI-CNR (Italy)
February, 2001

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

3. Project Overview
February, 2001

4. (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

5. 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

6. 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

7. CYCLADES The Digital Archives CYCLADES functionality
CYCLADES architecture
February, 2001

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

9. 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...
February, 2001

10. 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 ( );
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

11. OAI specs: some functionality
List Identifiers
List Records
Get Record
Example
February, 2001

12. Identifier : oai:arXiv:cond-mat/0006408 Datestamp : 2001-01-31
Header:
Identifier : oai:arXiv:cond-mat/
Datestamp :
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:
type: e-print identifier:
February, 2001

13. 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

14. 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

15. 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

16. 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

17. 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 folders
Service learns the user information needs automatically
New data is classified into the right topic folder automatically
February, 2001

18. 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
Shared working space
February, 2001

19. 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)
Modular
Basic functionality are allocated on servers
Distributed
Servers maybe over the Web
Open
new services can easily be added
February, 2001

21. 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

22. Project Activities and Responsibilities
February, 2001

23. February, 2001

24. Project Schedule
February, 2001

25.
February, 2001