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COMPGEOM
1995
ACM
15 years 10 months ago
How Good are Convex Hull Algorithms?
A convex polytope P can be speci ed in two ways: as the convex hull of the vertex set V of P, or as the intersection of the set H of its facet-inducing halfspaces. The vertex enum...
David Avis, David Bremner
VLDB
2004
ACM
126views Database» more  VLDB 2004»
16 years 2 days ago
Instance-based Schema Matching for Web Databases by Domain-specific Query Probing
In a Web database that dynamically provides information in response to user queries, two distinct schemas, interface schema (the schema users can query) and result schema (the sch...
Jiying Wang, Ji-Rong Wen, Frederick H. Lochovsky, ...
SPIRE
2010
Springer
15 years 5 months ago
Restricted LCS
The Longest Common Subsequence (LCS) of two or more strings is a fundamental well-studied problem which has a wide range of applications throughout computational sciences. When the...
Zvi Gotthilf, Danny Hermelin, Gad M. Landau, Moshe...
ICALP
2009
Springer
16 years 7 months ago
Complexity of Model Checking Recursion Schemes for Fragments of the Modal Mu-Calculus
Ong has shown that the modal mu-calculus model checking problem (equivalently, the alternating parity tree automaton (APT) acceptance problem) of possibly-infinite ranked trees gen...
Naoki Kobayashi, C.-H. Luke Ong
BIRTHDAY
2009
Springer
16 years 1 months ago
Covering a Tree by a Forest
Consider a tree T and a forest F. The paper discusses the following new problems: The Forest vertex-cover problem (FVC): cover the vertices of T by a minimum number of copies of tr...
Fanica Gavril, Alon Itai