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ICASSP
2011
IEEE
14 years 11 months ago
Efficient discrete fractional Hirschman optimal transform and its application
All of the existing N-point discrete fractional signal transforms require O(N2 ) computation complexity. In this paper, we propose a new discrete fractional signal transform whose...
Wen-Liang Hsue, Soo-Chang Pei, Jian-Jiun Ding
ESA
2009
Springer
346views Algorithms» more  ESA 2009»
16 years 1 months ago
Hash, Displace, and Compress
A hash function h, i.e., a function from the set U of all keys to the range range [m] = {0, . . . , m − 1} is called a perfect hash function (PHF) for a subset S ⊆ U of size n ...
Djamal Belazzougui, Fabiano C. Botelho, Martin Die...
ICDE
2007
IEEE
119views Database» more  ICDE 2007»
16 years 1 months ago
Stream Variables: A Quick but not Dirty SQL Extension for Continuous Queries
The ability to query data streams is of increasing importance and has been identified as a crucial element for modern organizations and agencies. This paper identifies a class o...
Damianos Chatziantoniou, Yannis Sotiropoulos
GECCO
2007
Springer
175views Optimization» more  GECCO 2007»
16 years 1 months ago
Regular expression generation through grammatical evolution
This study investigates automatic regular expression generation using Grammatical Evolution. The software implementation is based on a subset of POSIX regular expression rules. Fo...
Ahmet Cetinkaya
ICDM
2006
IEEE
182views Data Mining» more  ICDM 2006»
16 years 1 months ago
Active Learning to Maximize Area Under the ROC Curve
In active learning, a machine learning algorithm is given an unlabeled set of examples U, and is allowed to request labels for a relatively small subset of U to use for training. ...
Matt Culver, Kun Deng, Stephen D. Scott