522 search results - page 10 / 105 » Answering Aggregation Queries in a Secure System Model |
ICDT
2010
ACM
13 years 10 months ago
2010
ACM
When a query is evaluated under bag semantics, each answer is returned as many times as it has derivations. Bag semantics has long been recognized as important, especially when ag...
ECIR
2007
Springer
13 years 10 months ago
2007
Springer
Question answering systems rely on retrieval components to identify documents that contain an answer to a user’s question. The formulation of queries that are used for retrieving...
EDBT
2009
ACM
13 years 12 months ago
2009
ACM
With the amount of data in current data warehouse databases growing steadily, random sampling is continuously gaining in importance. In particular, interactive analyses of large d...
ICDE
2008
IEEE
14 years 10 months ago
2008
IEEE
Aggregate measures summarizing subsets of data are valuable in exploratory analysis and decision support, especially when dependent aggregations can be easily specified and compute...
ECAI
2008
Springer
13 years 10 months ago
2008
Springer
Abstract. We study privacy guarantees for the owner of an information system who wants to share some of the information in the system with clients while keeping some other informat...