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SIGMOD
2007
ACM
112views Database» more  SIGMOD 2007»
15 years 9 months ago
A random walk approach to sampling hidden databases
A large part of the data on the World Wide Web is hidden behind form-like interfaces. These interfaces interact with a hidden backend database to provide answers to user queries. ...
Arjun Dasgupta, Gautam Das, Heikki Mannila
EC
2007
118views ECommerce» more  EC 2007»
14 years 9 months ago
Geometric Crossovers for Multiway Graph Partitioning
Geometric crossover is a representation-independent generalization of the traditional crossover defined using the distance of the solution space. By choosing a distance firmly r...
Alberto Moraglio, Yong-Hyuk Kim, Yourim Yoon, Byun...
ICML
2004
IEEE
15 years 10 months ago
Training conditional random fields via gradient tree boosting
Conditional Random Fields (CRFs; Lafferty, McCallum, & Pereira, 2001) provide a flexible and powerful model for learning to assign labels to elements of sequences in such appl...
Thomas G. Dietterich, Adam Ashenfelter, Yaroslav B...
SAT
2004
Springer
131views Hardware» more  SAT 2004»
15 years 3 months ago
A Comparative Study of 2QBF Algorithms
2QBF is the problem of evaluating a Quantified Boolean Formula (QBF) with two levels of quantification. Many practical problems in sequential verification can be formulated as i...
Darsh P. Ranjan, Daijue Tang, Sharad Malik
ICCV
2003
IEEE
15 years 11 months ago
Multiclass Spectral Clustering
We propose a principled account on multiclass spectral clustering. Given a discrete clustering formulation, we first solve a relaxed continuous optimization problem by eigendecomp...
Stella X. Yu, Jianbo Shi