522 search results - page 40 / 105 » Answering Aggregation Queries in a Secure System Model |
SIGMOD
2008
ACM
14 years 7 months ago
2008
ACM
A statistical database (StatDB) retrieves only aggregate results, as opposed to individual tuples. This paper investigates the construction of a privacy preserving StatDB that can...
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...
ICTIR
2009
Springer
14 years 2 months ago
2009
Springer
Abstract Even the best information retrieval model cannot always identify the most useful answers to a user query. This is in particular the case with web search systems, where it ...
VLDB
1990
ACM
13 years 11 months ago
1990
ACM
A probabilistic learning model for vague queries and missing or imprecise information in databases is described. Instead of retrieving only a set of answers, our approach yields a...
ICDCS
2009
IEEE
14 years 4 months ago
2009
IEEE
Users and administrators of large distributed systems are frequently in need of monitoring and management of its various components, data items and resources. Though there exist s...