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CCCG
2007
13 years 9 months ago
Contraction and Expansion of Convex Sets
Let S be a set system of convex sets in Rd . Helly’s theorem states that if all sets in S have empty intersection, then there is a subset S′ ⊂ S of size d+1 which also has e...
Michael Langberg, Leonard J. Schulman
CICLING
2010
Springer
13 years 2 months ago
A Chunk-Driven Bootstrapping Approach to Extracting Translation Patterns
Abstract. We present a linguistically-motivated sub-sentential alignment system that extends the intersected IBM Model 4 word alignments. The alignment system is chunk-driven and r...
Lieve Macken, Walter Daelemans
SIGSOFT
2005
ACM
14 years 8 months ago
Lightweight object specification with typestates
Previous work has proven typestates to be useful for modeling protocols in object-oriented languages. We build on this work by addressing substitutability of subtypes as well as i...
Kevin Bierhoff, Jonathan Aldrich
PPDP
2004
Springer
14 years 27 days ago
Characterizing strong normalization in a language with control operators
We investigate some fundamental properties of the reduction relation in the untyped term calculus derived from Curien and Herbelin’s λµµ. The original λµµ has a system of ...
Daniel J. Dougherty, Silvia Ghilezan, Pierre Lesca...
DCG
2008
101views more  DCG 2008»
13 years 7 months ago
On the Hardness of Computing Intersection, Union and Minkowski Sum of Polytopes
For polytopes P1, P2 Rd we consider the intersection P1 P2, the convex hull of the union CH(P1 P2), and the Minkowski sum P1 + P2. For Minkowski sum we prove that enumerating t...
Hans Raj Tiwary