35 search results - page 5 / 7 » On the interlace polynomials of forests |
94
Voted
STOC
2010
ACM
15 years 2 months ago
2010
ACM
We give the first polynomial-time approximation scheme (PTAS) for the Steiner forest problem on planar graphs and, more generally, on graphs of bounded genus. As a first step, w...
79
Voted
SODA
1990
ACM
14 years 10 months ago
1990
ACM
Given an unweighted planar graph G together with nets of terminals, our problem is to find a Steiner forest, i.e., vertex-disjoint trees, each of which interconnects all the termin...
97
Voted
TON
2010
14 years 4 months ago
2010
Abstract--Energy efficiency is critical for wireless sensor networks. The data-gathering process must be carefully designed to conserve energy and extend network lifetime. For appl...
104
click to vote
SODA
1992
ACM
14 years 10 months ago
1992
ACM
We present a general approximation technique for a large class of graph problems. Our technique mostly applies to problems of covering, at minimum cost, the vertices of a graph wit...
85
Voted
ICDT
2007
ACM
15 years 3 months ago
2007
ACM
Stay macro tree transducers (smtts) are an expressive formalism for reasoning about XSLT-like document transformations. Here, we consider the exact type checking problem for smtts....