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VLDB
2002
ACM
13 years 7 months ago
2002
ACM
Accurate prediction of operator execution time is a prerequisite for database query optimization. Although extensively studied for conventional disk-based DBMSs, cost modeling in ...
VLDB
2002
ACM
13 years 7 months ago
2002
ACM
While standardization efforts for XML query languages have been progressing, researchers and users increasingly focus on the database technology that has to deliver on the new cha...
VR
2002
IEEE
13 years 7 months ago
2002
IEEE
This paper addresses the issue of improving the perception of contact that users make with purely virtual objects in virtual environments. Because these objects have no physical c...
MOR
2007
13 years 7 months ago
2007
We consider the problem of solving a nonhomogeneous infinite horizon Markov Decision Process (MDP) problem in the general case of potentially multiple optimal first period polic...
MP
2007
13 years 7 months ago
2007
Given a primal-dual pair of linear programs, it is well known that if their optimal values are viewed as lying on the extended real line, then the duality gap is zero, unless both...