412 search results - page 7 / 83 » Aggregate queries over ontologies |
KR
2010
Springer
13 years 11 months ago
2010
Springer
The DL-Lite family of Description Logics has been designed with the specific goal of allowing for answering complex queries (in particular, conjunctive queries) over ontologies w...
ICDT
1999
ACM
13 years 11 months ago
1999
ACM
Abstract. In this paper we present a new approach for studying aggregations in the context of database query languages. Starting from a broad de nition of aggregate function, we ad...
DLOG
2007
13 years 9 months ago
2007
Abstract. Fuzzy Description Logics (f-DLs) have been proposed as formalisms capable of capturing and reasoning about imprecise and vague knowledge. The last years, research in Desc...
APWEB
2008
Springer
13 years 9 months ago
2008
Springer
Abstract. Nowadays, we have witnessed the widely recognized phenomenon of high speed data streams. Various statistics computation over data streams is often required by many applic...
ERSHOV
2009
Springer
14 years 1 months ago
2009
Springer
Abstract. Data privacy is an important application of ontology modularization. The aim is to publish one module while keeping the information of another module private. We show how...