6 papers · 1 filter
Pricing Pandora's Boxes: Revenue Maximization in Sequential Information Acquisition
Shuchi Chawla, Dimitris Christou, Trung Dang +1
We study a mechanism design problem in which a seller controls access to information about a set of stochastic alternatives, and a buyer sequentially acquires information in order…
Commitment Gap via Correlation Gap
Shuchi Chawla, Dimitris Christou, Trung Dang
Selection problems with costly information, dating back to Weitzman's Pandora's Box problem, have received much attention recently. We study the general model of Costly Information…
Combinatorial Selection with Costly Information
Shuchi Chawla, Dimitris Christou, Amit Harlev +1
We consider a class of optimization problems over stochastic variables where the algorithm can learn information about the value of any variable through a series of costly steps; w…
Online Time-Windows TSP with Predictions
Shuchi Chawla, Dimitris Christou
In the Time-Windows TSP (TW-TSP) we are given requests at different locations on a network; each request is endowed with a reward and an interval of time; the goal is to find a tou…
Memoryless Algorithms for the Generalized -server Problem on Uniform Metrics
Dimitris Christou, Dimitris Fotakis, Grigorios Koumoutsos
We consider the generalized -server problem on uniform metrics. We study the power of memoryless algorithms and show tight bounds of on their competitive ratio. In parti…
Online learning for min-max discrete problems
Evripidis Bampis, Dimitris Christou, Bruno Escoffier +1
We study various discrete nonlinear combinatorial optimization problems in an online learning framework. In the first part, we address the question of whether there are negative re…