Tutorial 14-A - Detecting, Understanding and Exploiting Web

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8 Νοε 2013 (πριν από 4 χρόνια και 8 μήνες)

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Tutorial 14


Detecting, Understanding and Exploiting Web

Athena Vakali
, Aristotle University of Thessaloniki

Ioannis Kompatsiaris, Informatics and Telematics Institute


Collective user activities on multiple, often heterogeneous and
evolving Web

sources contributes
in the formation of Web communities which are either derived from

Web documents/pages, or by
users navigational tasks and more recently by tags and social

frameworks. Defining, deriving and
exploiting communities is not a t
rivial task since several

parameters (large

scale, complexity, evolving
information etc) are involved.

This tutorial aims at providing answers for crucial questions raised about

communities emerging in
the Web and it will initially walk the audience on is
sues involved

towards different community
definitions such that then, the problem of community

detection (which is well matured and researched
in the past) is understood. The tutorial

will emphasize and discuss the most important methodologies
and techniqu
es which deal

with large populations of Web documents participating in vast hyperlinked
networks, or

networks formed from crawling (part of) the web and more recently, networks reflecting

the social relations and/or interactions among people. It is importa
nt to understand and

community identification efforts by taking into account that different levels of

granularity and different
views are often used for community identification. Next step of

the tutorial will be to point applications
and implem
entations which may be benefited by

exploiting Web communities and certain application
scenarios will be presented.

The emphasis is on the intuition behind all these methodologies and

implementations, and on their practical impact for tasks of recommendati
on, searching,

outsourcing, data administration etc.


Prof. Athena Vakali

is a faculty member at the Department of Informatics of Aristotle University,
Thessaloniki, Greece (currently associate professor) since 1997, where she’s leading t
he research
group of Web data management. Her current research interests include Web usage mining, content
delivery networks on the Web, Web and social Web data clustering and Web data
caching/outsourcing. Prof. Vakali has co

edited 3 books (Springer, IGI), co

authored 7 book chapters,
40 papers in refereed journals and more than 60 papers in international conferences. She is in the
editorial board of "Computers & Electrical Engineering" Journal (Elsevier) and the Internationa
l Journal
of Grid and High Performance Computing (IGI publishing). She has participated in more than 20
research and development projects from which she has scientifically leaded 13. Prof. Vakali has
served as a PC member to many international conferences,

and she has been general chair and
organizer of the EDBT’04 Workshop on Clustering Information over the Web (ClustWeb’04), the 2005
and 2006 ICDE

Workshop on Challenges in Web Information Retrieval and Integration (WIRI’05, ‘06)
and the ESWC’08

Workshop on “Collective Semantics: Collective Intelligence and the Semantic Web”
(CISWEB’08). She has also presented a tutorial “Clustering on the Web: Theo
ry and Practices” at the
10th East

European Conference on Advances in Databases and Information Systems, September

Dr. Yiannis Kompatsiaris
received the Diploma degree in electrical engineering and the Ph.D.
degree in 3

D model based image sequence c
oding from Aristotle University of Thessaloniki (AUTH),
Thessaloniki, Greece in 1996 and 2001, respectively. He is a Senior Researcher with the Informatics
and Telematics Institute, Thessaloniki and currently he is leading the Multimedia Knowledge Group.
is research interests include multimedia and the Semantic Web, social content analysis, multimedia
content processing, context aware inference for semantic multimedia analysis, personalization and
retrieval. He is the coauthor of 10 book chapters, 30 paper
s in refereed journals and more than 90
papers in international conferences. He has served as a regular reviewer for a number of international
journals and conferences. He is a member of IEEE, ACM and IEE.