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223
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WIOPT
2011
IEEE
14 years 11 months ago
Portfolio optimization in secondary spectrum markets
—In this paper, we address the spectrum portfolio optimization (SPO) question in the context of secondary spectrum markets, where bandwidth (spectrum access rights) can be bought...
Praveen Kumar Muthuswamy, Koushik Kar, Aparna Gupt...
PODS
2007
ACM
203views Database» more  PODS 2007»
16 years 7 months ago
Decision trees for entity identification: approximation algorithms and hardness results
We consider the problem of constructing decision trees for entity identification from a given relational table. The input is a table containing information about a set of entities...
Venkatesan T. Chakaravarthy, Vinayaka Pandit, Samb...
218
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CIKM
2009
Springer
16 years 2 months ago
Generating comparative summaries of contradictory opinions in text
This paper presents a study of a novel summarization problem called contrastive opinion summarization (COS). Given two sets of positively and negatively opinionated sentences whic...
Hyun Duk Kim, ChengXiang Zhai
202
Voted
COMPGEOM
2009
ACM
16 years 2 months ago
Epsilon nets and union complexity
We consider the following combinatorial problem: given a set of n objects (for example, disks in the plane, triangles), and an integer L ≥ 1, what is the size of the smallest su...
Kasturi R. Varadarajan
226
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COMPGEOM
2009
ACM
16 years 2 months ago
Integral estimation from point cloud in d-dimensional space: a geometric view
Integration over a domain, such as a Euclidean space or a Riemannian manifold, is a fundamental problem across scientific fields. Many times, the underlying domain is only acces...
Chuanjiang Luo, Jian Sun, Yusu Wang