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ACM Transactions on the Web (TWEB), Volume 5 Issue 3, July 2011

A Clustering-Driven LDAP Framework
Vassiliki Koutsonikola, Athena Vakali
Article No.: 12
DOI: 10.1145/1993053.1993054

LDAP directories have proliferated as the appropriate storage framework for various and heterogeneous data sources, operating under a wide range of applications and services. Due to the increased amount and heterogeneity of the LDAP data, there is...

ACConv -- An Access Control Model for Conversational Web Services
Federica Paci, Massimo Mecella, Mourad Ouzzani, Elisa Bertino
Article No.: 13
DOI: 10.1145/1993053.1993055

With organizations increasingly depending on Web services to build complex applications, security and privacy concerns including the protection of access control policies are becoming a serious issue. Ideally, service providers would like to make...

On Computing Deltas of RDF/S Knowledge Bases
Dimitris Zeginis, Yannis Tzitzikas, Vassilis Christophides
Article No.: 14
DOI: 10.1145/1993053.1993056

The ability to compute the differences that exist between two RDF/S Knowledge Bases (KB) is an important step to cope with the evolving nature of the Semantic Web (SW). In particular, RDF/S deltas can be employed to reduce the amount of data that...

A Comprehensive Study of Features and Algorithms for URL-Based Topic Classification
Eda Baykan, Monika Henzinger, Ludmila Marian, Ingmar Weber
Article No.: 15
DOI: 10.1145/1993053.1993057

Given only the URL of a Web page, can we identify its topic? We study this problem in detail by exploring a large number of different feature sets and algorithms on several datasets. We also show that the inherent overlap between topics and...

Building Mashups by Demonstration
Rattapoom Tuchinda, Craig A. Knoblock, Pedro Szekely
Article No.: 16
DOI: 10.1145/1993053.1993058

The latest generation of WWW tools and services enables Web users to generate applications that combine content from multiple sources. This type of Web application is referred to as a mashup. Many of the tools for constructing mashups rely on a...