Search Results for author: Roberto Rossi

Found 9 papers, 6 papers with code

jsdp: a Java Stochastic DP Library

1 code implementation20 Sep 2022 Roberto Rossi

Stochastic Dynamic Programming is a branch of Stochastic Programming that takes a "functional equation" approach to the discovery of optimal policies.

Decision Making Decision Making Under Uncertainty

Declarative Statistics

1 code implementation6 Aug 2017 Roberto Rossi, Özgür Akgün, Steven Prestwich, S. Armagan Tarim

In this work we introduce declarative statistics, a suite of declarative modelling tools for statistical analysis.

The Dynamic Bowser Routing Problem

1 code implementation30 May 2017 Roberto Rossi, Maurizio Tomasella, Belen Martin-Barragan, Tim Embley, Chris Walsh, Matthew Langston

Motivated by a practical case study elicited in the context of a project we recently conducted at Crossrail, we introduce the Dynamic Bowser Routing Problem.

Optimization and Control

Stochastic Constraint Programming as Reinforcement Learning

no code implementations24 Apr 2017 Steven Prestwich, Roberto Rossi, Armagan Tarim

Reinforcement Learning (RL) extends Dynamic Programming to large stochastic problems, but is problem-specific and has no generic solvers.

reinforcement-learning Reinforcement Learning (RL)

The BIN_COUNTS Constraint: Filtering and Applications

no code implementations28 Nov 2016 Roberto Rossi, Özgür Akgün, Steven Prestwich, Armagan Tarim

We show that BIN_COUNTS can be employed to develop a decomposition for the $\chi^2$ test constraint, a new statistical constraint that we introduce in this work.

Statistical Constraints

1 code implementation20 Feb 2014 Roberto Rossi, Steven Prestwich, S. Armagan Tarim

We introduce statistical constraints, a declarative modelling tool that links statistics and constraint programming.

Scheduling

A unified modeling approach for the static-dynamic uncertainty strategy in stochastic lot-sizing

1 code implementation23 Jul 2013 Roberto Rossi, Onur A. Kilic, S. Armagan Tarim

In this paper, we develop mixed integer linear programming models to compute near-optimal policy parameters for the non-stationary stochastic lot sizing problem under Bookbinder and Tan's static-dynamic uncertainty strategy.

Optimization and Control Systems and Control Probability

Piecewise linear approximations of the standard normal first order loss function

1 code implementation5 Jul 2013 Roberto Rossi, S. Armagan Tarim, Steven Prestwich, Brahim Hnich

When the random variable of interest is normally distributed, the first order loss function can be easily expressed in terms of the standard normal cumulative distribution and probability density function.

Optimization and Control Probability

Confidence-based Reasoning in Stochastic Constraint Programming

no code implementations9 Oct 2011 Roberto Rossi, Brahim Hnich, S. Armagan Tarim, Steven Prestwich

In this work we introduce a novel approach, based on sampling, for finding assignments that are likely to be solutions to stochastic constraint satisfaction problems and constraint optimisation problems.

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