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PVLDB
2008
154views more  PVLDB 2008»
15 years 6 months ago
Indexing land surface for efficient kNN query
The class of k Nearest Neighbor (kNN) queries is frequently used in geospatial applications. Many studies focus on processing kNN in Euclidean and road network spaces. Meanwhile, ...
Cyrus Shahabi, Lu-An Tang, Songhua Xing
KDD
2009
ACM
210views Data Mining» more  KDD 2009»
16 years 1 months ago
Modeling and predicting user behavior in sponsored search
Implicit user feedback, including click-through and subsequent browsing behavior, is crucial for evaluating and improving the quality of results returned by search engines. Severa...
Josh Attenberg, Sandeep Pandey, Torsten Suel
MM
2010
ACM
151views Multimedia» more  MM 2010»
15 years 6 months ago
Enhanced exploration of oral history archives through processed video and synchronized text transcripts
A digital video library of over 900 hours of video and 18000 stories from The HistoryMakers was used by 266 students, faculty, librarians, and life-long learners interacting with ...
Michael G. Christel, Scott M. Stevens, Bryan Maher...
SIGMOD
2003
ACM
146views Database» more  SIGMOD 2003»
16 years 6 months ago
Estimating Compilation Time of a Query Optimizer
A query optimizer compares alternative plans in its search space to find the best plan for a given query. Depending on the search space and the enumeration algorithm, optimizers v...
Ihab F. Ilyas, Jun Rao, Guy M. Lohman, Dengfeng Ga...
SIGMOD
2009
ACM
202views Database» more  SIGMOD 2009»
16 years 6 months ago
ZStream: a cost-based query processor for adaptively detecting composite events
Composite (or Complex) event processing (CEP) systems search sequences of incoming events for occurrences of userspecified event patterns. Recently, they have gained more attentio...
Yuan Mei, Samuel Madden