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PVLDB
2010
84views more  PVLDB 2010»
15 years 3 months ago
Processing Top-k Join Queries
We consider the problem of efficiently finding the top-k answers for join queries over web-accessible databases. Classical algorithms for finding top-k answers use branch-and-b...
Minji Wu, Laure Berti-Equille, Amélie Maria...
DEXA
2003
Springer
115views Database» more  DEXA 2003»
15 years 10 months ago
Storing and Querying XML Data in the Nested Relational Sequence Database System
Abstract. We developed the Nested Relational Sequence Database System (NRSD System), which is built upon the Nested Relational Sequence Model (NRSM). The NRSM eliminates a substant...
Ho Lam Lau, Wilfred Ng
AI
2010
Springer
15 years 5 months ago
Property persistence in the situation calculus
We develop a new automated reasoning technique for the situation calculus that can handle a class of queries containing universal quantication over situation terms. Although such ...
Ryan F. Kelly, Adrian R. Pearce
IJAHUC
2008
118views more  IJAHUC 2008»
15 years 4 months ago
Analysis models for unguided search in unstructured P2P networks
: Random walk and flooding are basic mechanisms for searching unstructured overlays. This paper shows that node coverage is an important metric for query performance in random grap...
Bin Wu, Ajay D. Kshemkalyani
SAC
2008
ACM
15 years 4 months ago
Trajectory retrieval with latent semantic analysis
The problem of trajectory similarity has been recently attracted research interest considerably, due to its importance in diverse fields. In this work, we study trajectory similar...
Apostolos N. Papadopoulos