2705 search results - page 388 / 541 » Formal Ontology for Subject |
SIGECOM
2005
ACM
14 years 3 months ago
2005
ACM
This paper initiates research on the foundations of ranking systems, a fundamental ingredient of basic e-commerce and Internet Technologies. In order to understand the essence and...
SIGECOM
2005
ACM
14 years 3 months ago
2005
ACM
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...
SIGIR
2005
ACM
14 years 3 months ago
2005
ACM
Existing retrieval models generally do not offer any guarantee for optimal retrieval performance. Indeed, it is even difficult, if not impossible, to predict a model’s empirica...
SIGIR
2005
ACM
14 years 3 months ago
2005
ACM
This paper develops a general, formal framework for modeling term dependencies via Markov random fields. The model allows for arbitrary text features to be incorporated as eviden...
SIGIR
2005
ACM
14 years 3 months ago
2005
ACM
When investigating alternative estimates for term discriminativeness, we discovered that relevance information and idf are much closer related than formulated in classical literat...