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» On the structure of the Medvedev lattice
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DM
2007
84views more  DM 2007»
13 years 10 months ago
Matroids on convex geometries (cg-matroids)
We consider matroidal structures on convex geometries, which we call cg-matroids. The concept of a cg-matroid is closely related to but different from that of a supermatroid intro...
Satoru Fujishige, Gleb A. Koshevoy, Yoshio Sano
TIT
2002
60views more  TIT 2002»
13 years 10 months ago
A Zador-like formula for quantizers based on periodic tilings
We consider Zador's asymptotic formula for the distortion-rate function for a variable-rate vector quantizer in the high-rate case. This formula involves the differential ent...
N. J. A. Sloane, Vinay A. Vaishampayan
JCT
2010
94views more  JCT 2010»
13 years 9 months ago
Growth diagrams for the Schubert multiplication
We present a partial generalization to Schubert calculus on flag varieties of the classical Littlewood-Richardson rule, in its version based on Sch¨utzenberger’s jeu de taquin....
Cristian Lenart
BMCBI
2010
116views more  BMCBI 2010»
13 years 11 months ago
A hybrid approach to protein folding problem integrating constraint programming with local search
Background: The protein folding problem remains one of the most challenging open problems in computational biology. Simplified models in terms of lattice structure and energy func...
Abu Zafer M. Dayem Ullah, Kathleen Steinhöfel
DSVIS
2005
Springer
14 years 4 months ago
Concept Analysis as a Formal Method for Menu Design
The design and construction of navigation menus for websites have traditionally been performed manually according to the intuition of a web developer. This paper introduces a new a...
Guo-Qiang Zhang, Gongqin Shen, Ye Tian, Jiayang Su...