196 search results - page 33 / 40 » Group-by skyline query processing in relational engines |
MM
2010
ACM
13 years 7 months ago
2010
ACM
In this technical demonstration we show an integrated web system for video search and annotation based on ontologies. The system is composed by three components: the Orione1 ontol...
CIKM
2007
Springer
14 years 1 months ago
2007
Springer
Heterogeneous entities or objects are very common and are usually interrelated with each other in many scenarios. For example, typical Web search activities involve multiple types...
SIGMOD
2004
ACM
14 years 7 months ago
2004
ACM
As more and more query processing work can be done in main memory, memory access is becoming a significant cost component of database operations. Recent database research has show...
SIGIR
2003
ACM
14 years 26 days ago
2003
ACM
The empirical investigation of the effectiveness of information retrieval (IR) systems requires a test collection, a set of query topics, and a set of relevance judgments made by ...
SIGIR
2010
ACM
13 years 11 months ago
2010
ACM
Ranking search results is a fundamental problem in information retrieval. In this paper we explore whether the use of proximity and phrase information can improve web retrieval ac...