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IJRR
2010
86views more  IJRR 2010»
13 years 9 months ago
Multi-modal Motion Planning in Non-expansive Spaces
: The motion planning problems encountered in manipulation and legged locomotion have a distinctive multi-modal structure, where the space of feasible configurations consists of o...
Kris K. Hauser, Jean-Claude Latombe
ICDE
1999
IEEE
151views Database» more  ICDE 1999»
15 years 16 days ago
Data Integration by Describing Sources with Constraint Databases
We develop a data integration approach for the efficient evaluation of queries over autonomous source databases. The approach is based on some novel applications and extensions of...
Xun Cheng, Guozhu Dong, Tzekwan Lau, Jianwen Su
EDBT
2004
ACM
155views Database» more  EDBT 2004»
14 years 11 months ago
Processing Unions of Conjunctive Queries with Negation under Limited Access Patterns
We study the problem of answering queries over sources with limited access patterns. The problem is to decide whether a given query Q is feasible, i.e., equivalent to an executable...
Alan Nash, Bertram Ludäscher
CIDR
2007
165views Algorithms» more  CIDR 2007»
14 years 19 days ago
A Black-Box Approach to Query Cardinality Estimation
We present a “black-box” approach to estimating query cardinality that has no knowledge of query execution plans and data distribution, yet provides accurate estimates. It doe...
Tanu Malik, Randal C. Burns, Nitesh V. Chawla
BNCOD
1997
76views Database» more  BNCOD 1997»
14 years 16 days ago
Query Evaluation in CROQUE - Calculus and Algebra Coincide
With the substantial change of declarative query languages from plain SQL to the so-called \object SQLs", in particular OQL, there has surprisingly been not much change in the...
Torsten Grust, Joachim Kröger, Dieter Gluche,...