donatella castelli istituto di elaborazione della informazione – cnr pisa (italy)
DESCRIPTION
Donatella Castelli Istituto di Elaborazione della Informazione – CNR Pisa (Italy). General information. Funding programme E U 5FP - Action III-Multimedia Content and Tools Effort: 205 p/m Duration: 30 months Commencement date : February 2001. General information. Participants - PowerPoint PPT PresentationTRANSCRIPT
Donatella CastelliIstituto di Elaborazione della Informazione
– CNRPisa (Italy)
Berlin, 26 February 2001 OAI Open Day for Europe
General information
Funding programme EU 5FP - Action III-Multimedia Content
and ToolsEffort: 205 p/mDuration: 30 monthsCommencement date: February 2001
Berlin, 26 February 2001 OAI Open Day for Europe
General information
Participants
CNR (Italy, scientific coordinator)FORTH (Greece)GMD (Germany)University of Dortmund (Germany)ERCIM (France, administrative coordinator)
Berlin, 26 February 2001 OAI Open Day for Europe
Develop an open service archive environment composed by a set of interoperable services able tosupport scholars
in interacting with multi-disciplinary archives
as members of networked peer communities
Objective
Berlin, 26 February 2001 OAI Open Day for Europe
Design decisions
Common Interface
Archive1
Common Interface
Archive2
ArchiveN
Common Interface
Cyclades environment
Built on top of the metadata harvesting layer established by the OAI protocol
Berlin, 26 February 2001 OAI Open Day for Europe
Design decisions
Recommendation Service
Collaborative Work Service
Personalization Service
Query & Browse Mediator Service
Cyclades Mediator Service
Collection Service
Access Service
Independent services + Cyclades Mediator ServicesFor each service: - a well established access protocol - a precise service description
Berlin, 26 February 2001 OAI Open Day for Europe
Cyclades end-user functionality
Berlin, 26 February 2001 OAI Open Day for Europe
The user perceives an information space structured into a set of collections
Virtual Collections
Collection descriptions
documents in “computer science” domain
documents in “physics” domain stored in ArXiv and PhysNet, published after 1990
…….
Collection names
Computer Science
Recent Physics
…….
Berlin, 26 February 2001 OAI Open Day for Europe
Virtual Collections
A set of specific operations is available for each collection
European Computer Science attribute-based search, cross-language search, …
Computer Science
Collection names Operations
simple search,attribute-based search
simple-searchInput: “keywords in the abstract”Preconditions: keywords in EnglishOutput:set of <document.id,author,title>Effect:”returns the specified output for all the documents that contains the given keywords in their abstract”
Berlin, 26 February 2001 OAI Open Day for Europe
Virtual Collections The set of collections is dynamic
d d / (C1, C2, …,Cn) cond(d)
Composition
Selection based on description
of the collection Restriction on the document
metadata fields
Time 0: one collection for each Cyclades harvested repository
create.collection( )
Berlin, 26 February 2001 OAI Open Day for Europe
Information seeking Search
Collection names
Computer Science
Search fieldsauthor, title
Result
title= …. abstract =
European Computer Science
author,titlecountry,language
author.name =..English.title= …English.abstract = …local.language.abstract=
Berlin, 26 February 2001 OAI Open Day for Europe
Information seekingAuthorAuthorAbstractTitle...
CastelliStracciaStracciaThanos...Straccia.02.03.2000
Title = …. PPublisherublisher = IEI-CNR
Straccia.15.03.2000Straccia.24.04.2000...
INRIAGMDIEI-CNRCCNUCE-CNRNUCE-CNR...
Multilevel Browse
Schema
Metadata records
Attribute values
Berlin, 26 February 2001 OAI Open Day for Europe
The user creates a personal, dynamic hierarchy of folders for the storage of the records that match his information needs
Donatella’s folder Digital
Libraries
Education
Tourism
Metadata
Personalisation
The system learns user’s information needs (user profiling)
by observing the content of the folders, their organisation and the user behaviour
Berlin, 26 February 2001 OAI Open Day for Europe
Personalisation New data is classified into the right topic folder
automatically
The efficiency of the classifier may be improved by exploiting contextual information (e.g. the searching collection)
Donatella’s folder Digital
Libraries
Education
Tourism
Metadata
Berlin, 26 February 2001 OAI Open Day for Europe
By observing the behaviour of the users and their profiles the system identifies “similar users”
Recommender
Donatella:
(content based and collaborative)
Users get recommendations about new documents and new collections that the system judges relevant according to:
the specific user information needs the “similar users” information needs
Berlin, 26 February 2001 OAI Open Day for Europe
Cooperative Work A shared working space can be created by groups
referencing:– user own documents– collections– recommendations, related links, textual annotations,
ratings, …
Shared working space
Very interesting docTo be read
Berlin, 26 February 2001 OAI Open Day for Europe
Will we be able to build a quality service
on the OAI low barrier interoperability framework?
Berlin, 26 February 2001 OAI Open Day for Europe
An example
Collection description is used by:
the end-user to select the collection of interestthe collection administrator to select the
collections required to build a new collectionthe document classifier to increase efficiencythe recommender system to provide
information about new collections
Berlin, 26 February 2001 OAI Open Day for Europe
An example
What should a collection description contain:
content descripton subjectcoveragemetadata formatsmetadata languagecontent formatdigitalized content yes/no…
Berlin, 26 February 2001 OAI Open Day for Europe
An example
Collection content description: we need to rely on the document description
DC fields are optional
Collection subject: we need to know if the term in the subject field is a classification code, a free term, or term of a controlled vocabulary – the controlled vocabulary – the language of the terms
DC is unqualified
Berlin, 26 February 2001 OAI Open Day for Europe
Will be Cyclades a service for a subset of the OAI registered archives?
Berlin, 26 February 2001 OAI Open Day for Europe
Browse - Desire (University of Dortmund)
Personalisation - EUROgatherer (CNR)Cooperative work – CSCW, Cookpit
(GMD)
Background Tecnology
Berlin, 26 February 2001 OAI Open Day for Europe
Cooperative Work
A group of users that often access similar documents may enter into a long term relationship and eventually evolve into a working group (if only they become aware of each other)