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CIKM
2011
Springer
13 years 11 months ago
Lower-bounding term frequency normalization
In this paper, we reveal a common deficiency of the current retrieval models: the component of term frequency (TF) normalization by document length is not lower-bounded properly;...
Yuanhua Lv, ChengXiang Zhai
WSDM
2010
ACM
322views Data Mining» more  WSDM 2010»
15 years 9 months ago
Inferring Search Behaviors Using Partially Observable Markov (POM) Model
This article describes an application of the partially observable Markov (POM) model to the analysis of a large scale commercial web search log. Mathematically, POM is a variant o...
Kuansan Wang, Nikolas Gloy, Xiaolong Li
PODS
2010
ACM
306views Database» more  PODS 2010»
15 years 4 months ago
Optimizing linear counting queries under differential privacy
Differential privacy is a robust privacy standard that has been successfully applied to a range of data analysis tasks. But despite much recent work, optimal strategies for answe...
Chao Li, Michael Hay, Vibhor Rastogi, Gerome Mikla...
BMCBI
2010
100views more  BMCBI 2010»
14 years 12 months ago
Partitioning of copy-number genotypes in pedigrees
Background: Copy number variations (CNVs) and polymorphisms (CNPs) have only recently gained the genetic community's attention. Conservative estimates have shown that CNVs an...
Louis-Philippe Lemieux Perreault, Gregor U. Andelf...
SIGMOD
2008
ACM
236views Database» more  SIGMOD 2008»
15 years 12 months ago
Approximate embedding-based subsequence matching of time series
A method for approximate subsequence matching is introduced, that significantly improves the efficiency of subsequence matching in large time series data sets under the dynamic ti...
Vassilis Athitsos, Panagiotis Papapetrou, Michalis...