Search results for "cross-entropy method"

showing 2 items of 2 documents

La sopravvivenza immediata delle start-up italiane del settore manifatturiero sanitario: un'analisi multilevel

2017

The immediate survival of the Italian start-up businesses in healthcare industry: a multilevel analysis Objectives: The purpose of this contribution is to provide novel evidence about the main determinants of the short-run survival of pharmaceutical and medical device manufacturing start-up firms in Italy. In order to assess both the firm-specific determinants and the observed and unobserved regional and contextual characteristics, we model the three-year firm survival probability by means of a multilevel logistic framework. Methods and Results: The empirical analysis focuses on an internationally comparable database of the population of firms built up and managed by the Italian National In…

Medical devicedemografia d’impresa sopravvivenza delle imprese modellistica logit multi- level metodo dell’entropia relativa imprese start-upfirm demographyPopulationcross-entropy methodmetodo dell’entropia relativaLogistic regressionmultilevel logistic modellingstart-up firmsSurvival probabilityimprese start-upOrder (exchange)EconometricseducationProductivityGeneral Environmental ScienceEstimationeducation.field_of_studysopravvivenza delle impresefirm survivaldemografia d’impresaRandom effects modelStar-up Settore Sanitario Modelli Multilevel Italiamodellistica logit multi- levelfirm demography firm survival multilevel logistic modelling cross-entropy method start-up firmsSettore SECS-S/03 - Statistica EconomicaGeneral Earth and Planetary SciencesBusiness
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Hybridizing the cross-entropy method: An application to the max-cut problem

2009

Cross-entropy has been recently proposed as a heuristic method for solving combinatorial optimization problems. We briefly review this methodology and then suggest a hybrid version with the goal of improving its performance. In the context of the well-known max-cut problem, we compare an implementation of the original cross-entropy method with our proposed version. The suggested changes are not particular to the max-cut problem and could be considered for future applications to other combinatorial optimization problems.

Mathematical optimizationOptimization problemGeneral Computer ScienceQuadratic assignment problemMaximum cutCross-entropy methodManagement Science and Operations ResearchCross entropyModeling and SimulationCombinatorial optimizationCombinatorial methodMetaheuristicAlgorithmMathematicsComputers & Operations Research
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