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CYCLADES:
A Personalised Collaborative
Digital Library Environment
Umberto Straccia
I.S.T.I. - C.N.R.
Pisa (ITALY)
[email protected]
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Preface
• 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
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• 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
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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
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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
FOR MORE INFO...
http://www.openarchives.org
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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)
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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&ident
ifier=oai:bmc:1471-2148-1-4
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<?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>
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•
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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QuickTime™ and a TIFF (LZW) decompressor are needed to see this picture.
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Functionality
•
•
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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
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Collection management
•
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
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QuickTime™ and a TIFF (LZW) decompressor are needed to see this picture.
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QuickTime™ and a TIFF (LZW) decompressor are needed to see this picture.
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QuickTime™ and a TIFF (LZW) decompressor are needed to see this picture.
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QuickTime™ and a TIFF (LZW) decompressor are needed to see this picture.
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QuickTime™ and a TIFF (LZW) decompressor are needed to see this picture.
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Collaborative support
•
•
•
•
•
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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
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Search
•
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)
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Recommendation
•
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
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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)
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END
Umberto Straccia
Scientific coordinator of CYCLADES
[email protected]
www.ercim.org/cyclades
http://cyclades.ics.forth.gr/Cyclades/LoginForm.html
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