412 search results - page 55 / 83 » Aggregate queries over ontologies |
113
Voted
ICMCS
2006
IEEE
15 years 6 months ago
2006
IEEE
We present methods for improving text search retrieval of visual multimedia content by applying a set of visual models of semantic concepts from a lexicon of concepts deemed relev...
SIGMOD
2001
ACM
16 years 17 days ago
2001
ACM
Materialized views can provide massive improvements in query processing time, especially for aggregation queries over large tables. To realize this potential, the query optimizer ...
PODS
2005
ACM
16 years 17 days ago
2005
ACM
In sensor networks, data acquisition frequently takes place at lowcapability devices. The acquired data is then transmitted through a hierarchy of nodes having progressively incre...
114
Voted
ISR
2011
14 years 7 months ago
2011
Initially popularized by Amazon.com, recommendation technologies have become widespread over the past several years. However, the types of recommendations available to the users i...
120
Voted
SIGMOD
2004
ACM
16 years 17 days ago
2004
ACM
We are developing a distributed query processor called PIER, which is designed to run on the scale of the entire Internet. PIER utilizes a Distributed Hash Table (DHT) as its comm...