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COMPGEOM
2003
ACM
15 years 7 months ago
the asteroid surveying problem and other puzzles
We consider two variants of the well-known “sailor in the fog” puzzle. The first version (the “asteroid surveying” problem) is set in three dimensions and asks for the sh...
Timothy M. Chan, Alexander Golynski, Alejandro L&o...
MM
2003
ACM
79views Multimedia» more  MM 2003»
15 years 7 months ago
Hierarchical topical segmentation in instructional films based on cinematic expressive functions
In this paper, we propose a novel solution for segmenting an instructional video into hierarchical topical sections. Incorporating the knowledge of education-oriented film theory...
Dinh Q. Phung, Svetha Venkatesh, Chitra Dorai
ITP
2010
178views Mathematics» more  ITP 2010»
15 years 3 months ago
Developing the Algebraic Hierarchy with Type Classes in Coq
We present a new formalization of the algebraic hierarchy in Coq, exploiting its new type class mechanism to make practical a solution formerly thought infeasible. Our approach add...
Bas Spitters, Eelis van der Weegen
STOC
2007
ACM
181views Algorithms» more  STOC 2007»
16 years 2 months ago
How to rank with few errors
We present a polynomial time approximation scheme (PTAS) for the minimum feedback arc set problem on tournaments. A simple weighted generalization gives a PTAS for KemenyYoung ran...
Claire Kenyon-Mathieu, Warren Schudy
STOC
2003
ACM
122views Algorithms» more  STOC 2003»
16 years 2 months ago
Learning juntas
We consider a fundamental problem in computational learning theory: learning an arbitrary Boolean function which depends on an unknown set of k out of n Boolean variables. We give...
Elchanan Mossel, Ryan O'Donnell, Rocco A. Servedio