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» Solving Geometric Covering Problems by Data Reduction
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WEA
2007
Springer
116views Algorithms» more  WEA 2007»
14 years 3 months ago
Optimal Edge Deletions for Signed Graph Balancing
The Balanced Subgraph problem (edge deletion variant) asks for a 2-coloring of a graph that minimizes the inconsistencies with given edge labels. It has applications in social netw...
Falk Hüffner, Nadja Betzler, Rolf Niedermeier
CGI
2004
IEEE
14 years 22 days ago
Fast Environmental Lighting for Local-PCA Encoded BTFs
Rendering geometric models with complex surface materials in arbitrary lighting environments is a challenging problem. In order to relight and render geometries covered with compl...
Gero Müller, Jan Meseth, Reinhard Klein
JUCS
2007
122views more  JUCS 2007»
13 years 8 months ago
Efficient Access Methods for Temporal Interval Queries of Video Metadata
: Indexing video content is one of the most important problems in video databases. In this paper we present linear time and space algorithms for handling video metadata that repres...
Spyros Sioutas, Kostas Tsichlas, Bill Vassiliadis,...
CPM
2000
Springer
160views Combinatorics» more  CPM 2000»
14 years 1 months ago
Approximation Algorithms for Hamming Clustering Problems
We study Hamming versions of two classical clustering problems. The Hamming radius p-clustering problem (HRC) for a set S of k binary strings, each of length n, is to find p bina...
Leszek Gasieniec, Jesper Jansson, Andrzej Lingas
AAAI
2007
13 years 11 months ago
Isometric Projection
Recently the problem of dimensionality reduction has received a lot of interests in many fields of information processing. We consider the case where data is sampled from a low d...
Deng Cai, Xiaofei He, Jiawei Han