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ACM Transactions on the Web (TWEB), Volume 6 Issue 2, May 2012

Editorial
Helen Ashman, Arun Iyengar, Marc Najork
Article No.: 5
DOI: 10.1145/2180861.2180862

Integrating trust management and access control in data-intensive Web applications
Sabrina De Capitani Di Vimercati, Sara Foresti, Sushil Jajodia, Stefano Paraboschi, Giuseppe Psaila, Pierangela Samarati
Article No.: 6
DOI: 10.1145/2180861.2180863

The widespread diffusion of Web-based services provided by public and private organizations emphasizes the need for a flexible solution for protecting the information accessible through Web applications. A promising approach is represented by...

A hybrid approach for efficient Web service composition with end-to-end QoS constraints
Mohammad Alrifai, Thomas Risse, Wolfgang Nejdl
Article No.: 7
DOI: 10.1145/2180861.2180864

Dynamic selection of Web services at runtime is important for building flexible and loosely-coupled service-oriented applications. An abstract description of the required services is provided at design-time, and matching service offers are located...

Modellus: Automated modeling of complex internet data center applications
Peter Desnoyers, Timothy Wood, Prashant Shenoy, Rahul Singh, Sangameshwar Patil, Harrick Vin
Article No.: 8
DOI: 10.1145/2180861.2180865

The rising complexity of distributed server applications in Internet data centers has made the tasks of modeling and analyzing their behavior increasingly difficult. This article presents Modellus, a novel system for automated modeling of...

Friendship prediction and homophily in social media
Luca Maria Aiello, Alain Barrat, Rossano Schifanella, Ciro Cattuto, Benjamin Markines, Filippo Menczer
Article No.: 9
DOI: 10.1145/2180861.2180866

Social media have attracted considerable attention because their open-ended nature allows users to create lightweight semantic scaffolding to organize and share content. To date, the interplay of the social and topical components of social media...