291 search results - page 5 / 59 » On Generalizing Pawlak Approximation Operators |
CORR
2002
Springer
13 years 7 months ago
2002
Springer
We study xpoints of operators on lattices. To this end we introduce the notion of an approximation of an operator. We order approximations by means of a precision ordering. We sho...
SODA
2012
ACM
11 years 10 months ago
2012
ACM
We give a constant factor approximation algorithm for the following generalization of the k-median problem. We are given a set of clients and facilities in a metric space. Each fa...
GECCO
2008
Springer
13 years 8 months ago
2008
Springer
One of the major difficulties when applying Multiobjective Evolutionary Algorithms (MOEA) to real world problems is the large number of objective function evaluations. Approximate...
JCB
2002
13 years 7 months ago
2002
Arc-annotated sequences are useful in representing the structural information of RNA sequences. In general, RNA secondary and tertiary structures can be represented as a set of ne...
TIT
2010
13 years 2 months ago
2010
We consider the problem of rate and power allocation in a multiple-access channel. Our objective is to obtain rate and power allocation policies that maximize a general concave ut...