Sciweavers

640 search results - page 71 / 128
» Query Optimization Using Multiple SIP Strategies
Sort
View
107
Voted
ACMICEC
2007
ACM
154views ECommerce» more  ACMICEC 2007»
15 years 4 months ago
Learning and adaptivity in interactive recommender systems
Recommender systems are intelligent E-commerce applications that assist users in a decision-making process by offering personalized product recommendations during an interaction s...
Tariq Mahmood, Francesco Ricci
NIS
1998
131views more  NIS 1998»
15 years 6 days ago
Dynamic Memory Allocation for Large Query Execution
The execution time of a large query depends mainly on the memory utilization which should avoid disk accesses for intermediate results. Poor memory management can hurt performance ...
Luc Bouganim, Olga Kapitskaia, Patrick Valduriez
138
Voted
GLOBECOM
2009
IEEE
14 years 10 months ago
Dogfight in Spectrum: Jamming and Anti-Jamming in Multichannel Cognitive Radio Systems
Primary user emulation attack in multichannel cognitive radio systems is discussed. An attacker is assumed to be able to send primary-user-like signals during spectrum sensing peri...
Husheng Li, Zhu Han
98
Voted
EDBT
2010
ACM
185views Database» more  EDBT 2010»
15 years 7 months ago
Optimizing joins in a map-reduce environment
Implementations of map-reduce are being used to perform many operations on very large data. We examine strategies for joining several relations in the map-reduce environment. Our ...
Foto N. Afrati, Jeffrey D. Ullman
212
Voted
ICDE
2005
IEEE
120views Database» more  ICDE 2005»
16 years 1 months ago
Progressive Distributed Top k Retrieval in Peer-to-Peer Networks
Query processing in traditional information management systems has moved from an exact match model to more flexible paradigms allowing cooperative retrieval by aggregating the dat...
Wolf-Tilo Balke, Wolfgang Nejdl, Wolf Siberski, Uw...