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CYCLADES IST-2000-25456

CYCLADES: A Personalised Collaborative

Digital Library EnvironmentUmberto Straccia

I.S.T.I. - C.N.R.

Pisa (ITALY)

[email protected]


• Typical Digital Libraries (DLs) provide a search service to the web community at large. That means:– they rarely provide any personalized support– they do not learn the long-term preferences of a specific user

• Usually users access a DL in search of some information and may have overlapping interests if the information available in a DL matches their expectations, backgrounds, or motivations

• Very seldom, a DL is considered as collaborative meeting or working places, where users with common interests might well profit from each other

• We envisage a Digital Library not only as an information search resource, but also as a collaborative working and meeting space

Preface


• We will present a personalized collaborative Digital Library environment, where – users may organise the information space according to their

own subjective view

– may become aware of each other

– exchange information and knowledge with each other

– sharing opinions

– may build communities

– may get recommendations based on preference patterns of the users


CYCLADES www.ercim.org/cyclades

http://cyclades.ics.forth.gr/Cyclades/LoginForm.html

• EU funded project• about 2.150.000 E• Finishes end of July, 2003

• Objective: Development of a system which provides a personalised collaborative DL environment

• This environment will support– Users – Communities (and their members)– Projects (and their members)with functionality for advanced – Search in large, heterogeneous, multidisciplinary digital archives– Personalised Information Space Organisation– Collaboration, Filtering and Recommendation



The Digital Archives of Cyclades

• CYCLADES will provide access to the Digital Archives compliant with the Open Archives Initiative (OAI)– CYCLADES will harvest and index records from OAI

archives

– CYCLADES may also harvest and index text files from other sources

http://www.openarchives.org

FOR MORE INFO...


OAI: main functionality

• List Metadata Identifiers (constraints: from, until, metadata format)

• List Metadata Records (constraints: from, until, metadata format)

• Get Metadata Record (constraints: identifier, metadata format)


OAI: Get Record Example

• ARCHIVE: BioMed Central– Archive details : http://www.biomedcentral.com

• Publisher of journals covering all areas of biology and medicine.

• http://www.biomedcentral.com/oai/1.1/bmcoai.asp?verb=GetRecord&metadataPrefix=oai_dc&identifier=oai:bmc:1471-2148-1-4


<?xml version='1.0' encoding='utf-8'?> ...<record> …<dc xmlns="http://purl.org/dc/elements/1.1/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

xsi:schemaLocation="http://purl.org/dc/elements/1.1/ http://www.openarchives.org/OAI/1.1/dc.xsd"> <title> A genomic timescale for the origin of eukaryotes</title> <creator>S Blair Hedges</creator> <creator>Hsiong Chen</creator> …<description>Abstract Background Genomic sequence analyses have shown that horizontal gene transfer occurred during the origin of eukaryotes as a consequence of symbiosis. However, details of the timing and number of symbiotic events are unclear. A timescale for the early .…</description>…<identifier>http://www.biomedcentral.com/1471-2148/1/4</identifier> </dc></record>


• Our collaborative environment is based on the folder paradigm• users and communities of users may organise the

information space into their own folder hierarchy• folder becomes a holder of information items, which are

usually semantically related and, thus, implicitly determines what the folder's topic is about




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• Users may perform a set of actions, depending whether they are members of a community or not

• At any time, users perform their actions with respect to the current folder

• The functionality can be classified into five groups:• folder management• collection management• collaborative support• search• recommendation

Functionality


• Include– create, edit, delete

– new collections may be defined in terms of others, using meet, join and refinement operators

– define the access policies of collections

Collection management












• Collaboration between users is supported through the possibility of sharing community folders along with their contents and folder structure

• Discussion forums may be created within folders to allow informal exchange information

• Rating and annotation of data items also may take the form of discussions among the members of a community

• Mutual awareness may be supported through event icons (a kind of data item) displayed in the environment

• Activity reports that are daily received by email may also be possible.

• Also, users may view the list of all existing communities so that they become aware of ongoing community activity

Collaborative support



• Ad-hoc search: relevant data items are searched– within a set of user specified folders, she has access to

– within a specified list of collections, she has access to

• Filtered search: this is like to the usual ad-hoc search, except that the user specifies a query and a folder, and the action of the system will be to look for data items relevant both to the query and to the folder (i.e., folder profile)

Search




• A user may get recommendations of – data items

– collections

– users

– communities

• The recommendations issued are based on – other users' (implicit or explicit) ratings

– the similarity between the interests of the user, as represented by a given folder, and the interests of these other users, as represented by their folders

• All recommendations are specific to the context of a given user folder

Recommendation




Architecture• Modular

– Basic functionality is allocated on servers• Distributed

– Servers may be over the Web• Open

– new services can easily be added• Simple communication protocol

– XML-RPC (SOAP will be evaluated)



ENDUmberto Straccia

Scientific coordinator of [email protected]

www.ercim.org/cyclades http://cyclades.ics.forth.gr/Cyclades/LoginForm.ht

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