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NIPS
2003
15 years 4 months ago
Approximate Policy Iteration with a Policy Language Bias
We study an approach to policy selection for large relational Markov Decision Processes (MDPs). We consider a variant of approximate policy iteration (API) that replaces the usual...
Alan Fern, Sung Wook Yoon, Robert Givan
COMBINATORICS
2004
90views more  COMBINATORICS 2004»
15 years 2 months ago
Strings with Maximally Many Distinct Subsequences and Substrings
A natural problem in extremal combinatorics is to maximize the number of distinct subsequences for any length-n string over a finite alphabet ; this value grows exponentially, but...
Abraham Flaxman, Aram Wettroth Harrow, Gregory B. ...
DAC
2003
ACM
16 years 3 months ago
Improved global routing through congestion estimation
In this paper, we present a new method to improve global routing results. By using an amplified congestion estimate to influence a rip-up and reroute approach, we obtain substanti...
Raia Hadsell, Patrick H. Madden
SIGMOD
2004
ACM
105views Database» more  SIGMOD 2004»
16 years 3 months ago
The Priority R-Tree: A Practically Efficient and Worst-Case Optimal R-Tree
We present the Priority R-tree, or PR-tree, which is the first R-tree variant that always answers a window query using O((N/B)1-1/d + T/B) I/Os, where N is the number of ddimensio...
Lars Arge, Mark de Berg, Herman J. Haverkort, Ke Y...
WINE
2007
Springer
166views Economy» more  WINE 2007»
15 years 9 months ago
Gradient-Based Algorithms for Finding Nash Equilibria in Extensive Form Games
We present a computational approach to the saddle-point formulation for the Nash equilibria of two-person, zero-sum sequential games of imperfect information. The algorithm is a ï¬...
Andrew Gilpin, Samid Hoda, Javier Peña, Tuo...