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TIT
2002
89views more  TIT 2002»
13 years 11 months ago
Comparison of worst case errors in linear and neural network approximation
Sets of multivariable functions are described for which worst case errors in linear approximation are larger than those in approximation by neural networks. A theoretical framework...
Vera Kurková, Marcello Sanguineti
TCS
2002
13 years 11 months ago
MAX3SAT is exponentially hard to approximate if NP has positive dimension
Under the hypothesis that NP has positive p-dimension, we prove that any approximation algorithm A for MAX3SAT must satisfy at least one of the following:
John M. Hitchcock
SOFTWARE
2002
13 years 11 months ago
A Query-Driven Anytime Algorithm for Argumentative and Abductive Reasoning
Abstract. This paper presents a new approximation method for computing arguments or explanations in the context of logic-based argumentative or abductive reasoning. The algorithm c...
Rolf Haenni
TIP
1998
162views more  TIP 1998»
13 years 11 months ago
Variational image segmentation using boundary functions
Abstract—A general variational framework for image approximation and segmentation is introduced. By using a continuous “line-process” to represent edge boundaries, it is poss...
Gary A. Hewer, Charles S. Kenney, B. S. Manjunath
SIAMCOMP
1998
118views more  SIAMCOMP 1998»
13 years 11 months ago
Genericity, Randomness, and Polynomial-Time Approximations
Polynomial-time safe and unsafe approximations for intractable sets were introduced by Meyer and Paterson [Technical Report TM-126, Laboratory for Computer Science, MIT, Cambridge,...
Yongge Wang
PE
1998
Springer
158views Optimization» more  PE 1998»
13 years 11 months ago
Asymptotic Approximations and Bottleneck Analysis in Product Form Queueing Networks with Large Populations
Asymptotic approximations are constructed for the performance measures of product form queueing networks consisting of single server, fixed rate nodes with large populations. The...
Charles Knessl, Charles Tier
MOC
1998
111views more  MOC 1998»
13 years 11 months ago
The approximation power of moving least-squares
A general method for near-best approximations to functionals on Rd, using scattered-data information is discussed. The method is actually the moving least-squares method, presented...
David Levin
COMGEO
1999
ACM
13 years 11 months ago
Point labeling with sliding labels
This paper discusses algorithms for labeling sets of points in the plane, where labels are not restricted to some finite number of positions. We show that continuously sliding lab...
Marc J. van Kreveld, Tycho Strijk, Alexander Wolff
COMGEO
1999
ACM
13 years 11 months ago
Optimal triangulation and quadric-based surface simplification
Many algorithms for reducing the number of triangles in a surface model have been proposed, but to date there has been little theoretical analysis of the approximations they produ...
Paul S. Heckbert, Michael Garland
MOR
2000
90views more  MOR 2000»
13 years 11 months ago
A PTAS for Minimizing the Total Weighted Completion Time on Identical Parallel Machines
We consider the problem of scheduling a set of n jobs on m identical parallel machines so as to minimize the weighted sum of job completion times. This problem is NP-hard in the s...
Martin Skutella, Gerhard J. Woeginger