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SIGECOM
2008
ACM
94views ECommerce» more  SIGECOM 2008»
15 years 4 months ago
Optimizing query rewrites for keyword-based advertising
We consider the problem of query rewrites in the context of keyword advertisement. Given a three-layer graph consisting of queries, query rewrites, and the corresponding ads that ...
Azarakhsh Malekian, Chi-Chao Chang, Ravi Kumar, Gr...
JAL
2007
95views more  JAL 2007»
15 years 4 months ago
Computing shortest paths with uncertainty
Abstract. We consider the problem of estimating the length of a shortest path in a DAG whose edge lengths are known only approximately but can be determined exactly at a cost. Init...
Tomás Feder, Rajeev Motwani, Liadan O'Calla...
TON
2002
85views more  TON 2002»
15 years 4 months ago
The impact of point-to-multipoint traffic concentration on multirate networks design
We consider the problem of multirate network design with point-to-multipoint communications. We give a mathematical formulation for this problem. Using approximations, we show that...
Aref Meddeb, André Girard, Catherine Rosenb...
CCE
2010
15 years 2 months ago
A simple heuristic for reducing the number of scenarios in two-stage stochastic programming
In this work we address the problem of solving multiscenario optimization models that are deterministic equivalents of two-stage stochastic programs. We present a heuristic approx...
Ramkumar Karuppiah, Mariano Martín, Ignacio...
CDC
2010
IEEE
160views Control Systems» more  CDC 2010»
14 years 11 months ago
Aggregation-based model reduction of a Hidden Markov Model
This paper is concerned with developing an information-theoretic framework to aggregate the state space of a Hidden Markov Model (HMM) on discrete state and observation spaces. The...
Kun Deng, Prashant G. Mehta, Sean P. Meyn