The 23rd ACM Symposium on Applied Computing
March 16 - 20, 2008, Fortaleza, Ceará, Brazil

Track: Trust, Recommendations, Evidence and other Collaboration Know-how (TRECK)

Proceedings: ACM printed form, ACM CD-ROM and ACM digital library (a Journal special issue as for TRECK'05 will be considered)!

Aims and scope of the TRECK track:

Computational models of trust and online reputation mechanisms have been gaining momentum. The ACM SAC 2005, 2006 and 2007 TRECK tracks in Santa Fe, Dijon and Seoul attracted researchers from both academia and industry.

The goal of the ACM SAC 2008 TRECK track remains to review the set of applications that benefit from the use of computational trust and online reputation. Computational trust has been used in reputation systems, risk management, collaborative filtering, social/business networking services, dynamic coalitions, virtual organisations and even combined with trusted computing hardware modules. The TRECK track covers all computational trust applications, especially those used in real-world applications.

The topics of interest include, but are not limited to:

Recommender and reputation systems

Trust-enhanced collaborative applications

Trust and identity management

Combined computational trust and trusted computing

Tangible guarantees given by formal models of trust and risk

Trust metrics assessment and threat analysis

Pervasive computational trust and use of context-awareness

Autonomic and adaptive trust

Trade-off between privacy and trust

Trust/risk-based security frameworks

Automated collaboration and trust negotiation

Trust in peer-to-peer and open source systems

Technical trust evaluation and certification

Impacts of social networks on computational trust

Evidence gathering and management

Real-world applications, running prototypes and advanced simulations

Applicability in large-scale, open and decentralised environments

Legal and economic aspects related to the use of trust engines

User-studies and user interfaces of computational trust applications

Submission guidelines are posted on the TRECK 2008 website (, which always contains the latest updates.

Authors are invited to submit full papers about original and unpublished research. A paper cannot be submitted to more than one track. We would like to encourage the submission of industrial experience reports and reports of innovative computing applications.

The body of each paper should not exceed 5,000 words.

Submissions should be properly anonymized to facilitate blind reviewing.
At least three reviewers will be assigned to each submission to the TRECK track.


Sep. 8, 2007: Full paper submission

Oct. 16, 2007: Author notification

Oct. 30, 2007: Camera-ready copy

Mar. 16-20, 2008: ACM SAC in Fortaleza, Brazil

Conference Venue:
The symposium will be held at the beach in Fortaleza, Ceará, Brazil.
Fortaleza (Portuguese for fortress) is the State capital of Ceará, located in the sunny northeastern region of Brazil. With a population of more than 2.5 million, Fortaleza is a modern metropolis with greenish-blue sea, beautiful white-sand beaches, softy wind and a vibrating nightlife. Its complete tourism infrastructure and a rapidly growing industry make it one of the most important cities in the region in economic terms. Fortaleza has been for the last 3 years one of the most searched for cities in Brazil during holidays, second only to Rio. Fortaleza has a mild to warm temperature averaging at 27C (82F) all year around.
Fortaleza is very well served of top-class restaurants, especially from seafood to the famous brazilian barbecues and feijoada (a black beans dish)...

Track Program Chair:
Virgílio Almeida,
Federal University of Minas Gerais, Brazil

Organisation Chair:
Jean-Marc Seigneur,
University of Geneva, Switzerland,