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WECWIS
2005
IEEE
137views ECommerce» more  WECWIS 2005»
15 years 10 months ago
Using Singular Value Decomposition Approximation for Collaborative Filtering
Singular Value Decomposition (SVD), together with the Expectation-Maximization (EM) procedure, can be used to find a low-dimension model that maximizes the loglikelihood of obser...
Sheng Zhang, Weihong Wang, James Ford, Fillia Make...
WORDS
2005
IEEE
15 years 10 months ago
An RBAC Framework for Time Constrained Secure Interoperation in Multi-domain Environments
In emerging e-commerce applications, time constrained information sharing between different systems is becoming a common phenomenon. A flexible and efficient mechanism is needed t...
Smithi Piromruen, James B. D. Joshi
ACMICEC
2005
ACM
160views ECommerce» more  ACMICEC 2005»
15 years 10 months ago
Autonomous trading agent design in the presence of tradeoffs
In previous work we have introduced a principled methodology for systematically exploring the space of bidding strategies when agents participate in a significant number of simul...
Ioannis A. Vetsikas, Bart Selman
SAC
2005
ACM
15 years 10 months ago
SVD-based collaborative filtering with privacy
Collaborative filtering (CF) techniques are becoming increasingly popular with the evolution of the Internet. Such techniques recommend products to customers using similar users...
Huseyin Polat, Wenliang Du
SIGECOM
2005
ACM
130views ECommerce» more  SIGECOM 2005»
15 years 10 months ago
Graceful service degradation (or, how to know your payment is late)
When distributing digital content over a broadcast channel it’s often necessary to revoke users whose access privileges have expired, thus preventing them from recovering the co...
Alexandr Andoni, Jessica Staddon