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» On the Structure of Sequential Search: Beyond
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VLDB
1999
ACM
89views Database» more  VLDB 1999»
13 years 11 months ago
Physical Data Independence, Constraints, and Optimization with Universal Plans
We present an optimization method and algorithm designed for three objectives: physical data independence, semantic optimization, and generalized tableau minimization. The method ...
Alin Deutsch, Lucian Popa, Val Tannen
KDD
2012
ACM
217views Data Mining» more  KDD 2012»
11 years 9 months ago
The long and the short of it: summarising event sequences with serial episodes
An ideal outcome of pattern mining is a small set of informative patterns, containing no redundancy or noise, that identifies the key structure of the data at hand. Standard freq...
Nikolaj Tatti, Jilles Vreeken
WSDM
2012
ACM
207views Data Mining» more  WSDM 2012»
12 years 2 months ago
Sequence clustering and labeling for unsupervised query intent discovery
One popular form of semantic search observed in several modern search engines is to recognize query patterns that trigger instant answers or domain-specific search, producing sem...
Jackie Chi Kit Cheung, Xiao Li
ICAPR
2009
Springer
14 years 1 months ago
Hierarchical Local Maps for Robust Approximate Nearest Neighbor Computation
In this paper, we propose a novel method for fast nearest neighbors retrieval in non-Euclidean and non-metric spaces. We organize the data into a hierarchical fashion that preserv...
Pratyush Bhatt, Anoop M. Namboodiri
IPPS
1999
IEEE
13 years 11 months ago
Average-Case Analysis of Isospeed Scalability of Parallel Computations on Multiprocessors
We investigate the average-case speed and scalability of parallel algorithms executing on multiprocessors. Our performance metrics are average-speed and isospeed scalability. By m...
Keqin Li, Xian-He Sun