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AAAI
2007
15 years 9 months ago
On the Value of Good Advice: The Complexity of A* Search with Accurate Heuristics
We study the behavior of the classical A∗ search algorithm when coupled with a heuristic that provides estimates, accurate to within a small multiplicative factor, of the distan...
Hang T. Dinh, Alexander Russell, Yuan Su
DLOG
2007
15 years 9 months ago
Inverse Roles Make Conjunctive Queries Hard
Abstract. Conjunctive query answering is an important DL reasoning task. Although this task is by now quite well-understood, tight complexity bounds for conjunctive query answering...
Carsten Lutz
NIPS
2003
15 years 8 months ago
Online Learning of Non-stationary Sequences
We consider an online learning scenario in which the learner can make predictions on the basis of a fixed set of experts. We derive upper and lower relative loss bounds for a cla...
Claire Monteleoni, Tommi Jaakkola
SODA
2003
ACM
103views Algorithms» more  SODA 2003»
15 years 8 months ago
On the rectilinear crossing number of complete graphs
We prove a lower bound of 0.3288   n 4¡ for the rectilinear crossing number cr(Kn) of a complete graph on n vertices, or in other words, for the minimum number of convex quadril...
Uli Wagner
MOC
2002
75views more  MOC 2002»
15 years 6 months ago
Average equidistribution and statistical independence properties of digital inversive pseudorandom numbers over parts of the per
This article deals with the digital inversive method for generating uniform pseudorandom numbers. Equidistribution and statistical independence properties of the generated pseudora...
Frank Emmerich