796 search results - page 36 / 160 » Approximating the centroid is hard |
IPL
2008
13 years 7 months ago
2008
We consider the problem known as MAX-SATISFY: given a system of m linear equations over the rationals, find a maximum set of equations that can be satisfied. Let r be the width of...
TCBB
2010
13 years 6 months ago
2010
— We explore the maximum parsimony (MP) and ancestral maximum likelihood (AML) criteria in phylogenetic tree reconstruction. Both problems are NP hard, so we seek approximate sol...
FOCS
1995
IEEE
13 years 11 months ago
1995
IEEE
This paper continues the investigation of the connection between probabilistically checkable proofs PCPs the approximability of NP-optimization problems. The emphasis is on prov...
SIAMCOMP
2011
12 years 10 months ago
2011
We consider the Minimum Linear Arrangement problem and the (Uniform) Sparsest Cut problem. So far, these two notorious NP-hard graph problems have resisted all attempts to prove in...
CORR
2011
Springer
13 years 2 months ago
2011
Springer
Quadratic Programming (QP) is the well-studied problem of maximizing over {−1, 1} values the quadratic form i=j aijxixj. QP captures many known combinatorial optimization proble...