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» Competitive Online Approximation of the Optimal Search Ratio
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WECWIS
2005
IEEE
94views ECommerce» more  WECWIS 2005»
15 years 11 months ago
Truthful Online Auctions for Pricing Peer-to-Peer Services
We consider truthful online auctions that aim at optimizing sellers’ revenues, representing service contributors’ satisfactions, as a general model for pricing peer-to-peer se...
Po-An Chen, Tyng-Ruey Chuang
SAGA
2009
Springer
16 years 11 days ago
Economical Caching with Stochastic Prices
In the economical caching problem, an online algorithm is given a sequence of prices for a certain commodity. The algorithm has to manage a buffer of fixed capacity over time. We...
Matthias Englert, Berthold Vöcking, Melanie W...
IPCO
2007
108views Optimization» more  IPCO 2007»
15 years 7 months ago
Robust Combinatorial Optimization with Exponential Scenarios
Following the well-studied two-stage optimization framework for stochastic optimization [15, 18], we study approximation algorithms for robust two-stage optimization problems with ...
Uriel Feige, Kamal Jain, Mohammad Mahdian, Vahab S...
ESA
2008
Springer
134views Algorithms» more  ESA 2008»
15 years 7 months ago
Improved Randomized Results for That Interval Selection Problem
Online interval selection is a problem in which intervals arrive one by one, sorted by their left endpoints. Each interval has a length and a non-negative weight associated with i...
Leah Epstein, Asaf Levin
ICDM
2009
IEEE
160views Data Mining» more  ICDM 2009»
16 years 15 days ago
Fast Online Training of Ramp Loss Support Vector Machines
—A fast online algorithm OnlineSVMR for training Ramp-Loss Support Vector Machines (SVMR s) is proposed. It finds the optimal SVMR for t+1 training examples using SVMR built on t...
Zhuang Wang, Slobodan Vucetic