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142
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IPM
2007
158views more  IPM 2007»
15 years 2 months ago
Validation and interpretation of Web users' sessions clusters
Understanding users’ navigation on the Web is important towards improving the quality of information and the speed of accessing large-scale Web data sources. Clustering of users...
George Pallis, Lefteris Angelis, Athena Vakali
ISR
2007
15 years 2 months ago
Product Development and Pricing Strategy for Information Goods Under Heterogeneous Outside Opportunities
This paper considers a two-stage development problem for information goods with costless quality degradation. In our model, a seller of information goods faces customers that are ...
Ying-Ju Chen, Sridhar Seshadri
219
Voted
TIT
2008
122views more  TIT 2008»
15 years 2 months ago
An Efficient Pseudocodeword Search Algorithm for Linear Programming Decoding of LDPC Codes
Abstract--In linear programming (LP) decoding of a low-density parity-check (LDPC) code one minimizes a linear functional, with coefficients related to log-likelihood ratios, over ...
Michael Chertkov, Mikhail G. Stepanov
87
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TIT
2008
86views more  TIT 2008»
15 years 2 months ago
A One-to-One Code and Its Anti-Redundancy
One-to-one codes are "one shot" codes that assign a distinct codeword to source symbols and are not necessarily prefix codes (more generally, uniquely decodable). For ex...
Wojciech Szpankowski
119
Voted
TMC
2008
146views more  TMC 2008»
15 years 2 months ago
General Network Lifetime and Cost Models for Evaluating Sensor Network Deployment Strategies
In multihop wireless sensor networks that are often characterized by many-to-one (convergecast) traffic patterns, problems related to energy imbalance among sensors often appear. S...
Zhao Cheng, Mark A. Perillo, Wendi B. Heinzelman
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