148 search results - page 4 / 30 » Query Evaluation via Tree-Decompositions |
CCS
2008
ACM
13 years 9 months ago
2008
ACM
We propose an approach for the selective enforcement of access control restrictions in, possibly distributed, large data collections based on two basic concepts: i) flexible autho...
PRICAI
2010
Springer
13 years 5 months ago
2010
Springer
Abstract. Humans can associate vision and language modalities and thus generate mental imagery, i.e. visual images, from linguistic input in an environment of unlimited inflowing i...
EMNLP
2007
13 years 8 months ago
2007
Query segmentation is the process of taking a user’s search-engine query and dividing the tokens into individual phrases or semantic units. Identification of these query segmen...
CIKM
2003
Springer
14 years 17 days ago
2003
Springer
Evaluation of IR systems has always been difficult because of the need for manually assessed relevance judgments. The advent of large editor-driven taxonomies on the web opens the...
ISI
2006
Springer
13 years 7 months ago
2006
Springer
Access control mechanisms are commonly used to provide control over who may access sensitive information. However, malicious users can exploit the correlation among the data and in...