8 search results - page 2 / 2 » The Integer Hull of a Convex Rational Polytope |
MP
1998
14 years 9 months ago
1998
We define the base polytope B(P, g) of a partially ordered set P and a supermodular function g on the ideals ofP as the convex hull of the incidence vectors of all linear extensio...
MP
2011
14 years 4 months ago
2011
We consider a quadratic programming (QP) problem (Π) of the form min xT Cx subject to Ax ≥ b where C ∈ Rn×n + , rank(C) = 1 and A ∈ Rm×n , b ∈ Rm . We present an FPTAS ...
RECOMB
1997
Springer
15 years 2 months ago
1997
Springer
Multiple sequence alignment is an important problem in computational biology. We study the Maximum Trace formulation introduced by Kececioglu [?]. We first phrase the problem in ...