Category Archives: Scheduling and Resource Allocation

Solvers for Scheduling and Routing Problems

LocalSolver has been renamed to Hexaly which claims to be the world’s fastest optimization solver for Routing, Scheduling, and Packing problems. Link Check out also Timefold solver that handles the same problems and now inherited OptaPlanner after Red Hat announced … Continue reading

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OptaPlanner continues as Timefold

Geoffrey De Smet: OptaPlanner, an Open Source project for planning optimization, has entered a new chapter. “The project I worked on for seventeen years, has matured under Red Hat’s wings for the past ten years. Last year, when Red Hat’s … Continue reading

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MiniCP: A lightweight Java Constraint Programming Solver

Many decision problems (logistics, production, space, etc.) aiming at an optimal use of resources can be formulated as constraint combinatorial optimization problems. Unfortunately, these problems are difficult to solve mainly for two reasons: 1) They require complex algorithms to design … Continue reading

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Vaccination Scheduling Decisions

Geoffrey De Smet created a vaccination scheduling software. He discovered an interesting Vaccination Appointment Scheduling Paradox: It’s more user friendly if people can NOT choose their own appointment. Watch video

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Consuming Optimization models for Operational Decisions

During DecisionCAMP-2020, we had several presentations devoted to incorporation of Optimization Engines in Business Decision Models: 1) Developing Decision Optimization Microservices for Real-World Decision-Making Applications by Jacob Feldman; 2)  cDMN: Combining DMN with Constraint Reasoning by a KU Leuven’s team.

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Gurobi Optimization Application Demos

Gurobi, a provider of one of the most powerful mathematical optimization solvers,  announced new Optimization Application Demos. Each demo is a proof-of-concept of an application that addresses a challenging and high-value problem.  In particular, it contains another solution for our … Continue reading

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The math problem that could bring the world to a halt

Dynamic resource allocation problems arise from a range of different real-world scenarios and each one has its own specific issues. “Dynamic resource allocation problems deal with changing inputs and environments, which are highly dynamic and difficult to estimate and predict, … Continue reading

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Java Solver: Modeling and Solving Decision Optimization Problems

Dr. Jacob Feldman announced availability of a new open source product “Java Solver” that provides a very simple API for modeling and solving optimization problems in Java. This is probably the simplest API for adding optimization components to business decisioning … Continue reading

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Modeling and Solving Scheduling Problems with CP Optimizer

The Resource-Constrained Project Scheduling Problem (RCPSP) is a classical problem among the myriad scheduling problems studied both in academia and in industry. Philippe Laborie, a principal scientist at IBM, describes how it can easily be modeled and efficiently solved using … Continue reading

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