Search results for "laskennallinen vaativuus"

showing 5 items of 5 documents

Approximation method for computationally expensive nonconvex multiobjective optimization problems

2012

Pareto-tehokkuusPareto optimalitycomputational efficiencyPareto front approximationpäätöksentekodecision makerpsychological convergencemonitavoiteoptimointilaskennallinen vaativuussurrogate functioninteractive decision makingmenetelmätPareto-optimointioptimointilaskennalliset menetelmätmultiobjective optimizationPareto dominancyapproksimointicomputational cost
researchProduct

On solving computationally expensive multiobjective optimization problems with interactive methods

2014

Pareto-tehokkuusPareto optimalityinteractive multiobjective optimizationmatemaattinen optimointimonitavoiteoptimointilaskennallinen vaativuusmenetelmätPareto-optimointioptimointialgoritmitinteraktiiviset optimointimenetelmätNIMBUS methodsoftware implementationcomputational cost
researchProduct

On approaches for solving computationally expensive multiobjective optimization problems

2016

In this thesis, we consider solving computationally expensive multiobjective optimization problems that take into account the preferences of a decision maker (DM). The aim is to support the DM in identifying the most preferred solution for problems that have several conflicting objectives and when the evaluation of the candidate solutions is time consuming. This is conducted by replacing computationally expensive functions with computationally inexpensive functions, known as surrogates. First, based on a literature survey, we introduce two frameworks, i.e., a sequential and an adaptive framework, based on which surrogate-based methods are classified and compared. We then identify relevant cha…

decompositionpareto-tehokkuussijaismallipäätöksentekomultiobjective optimizationsurrogatedecision-makinghajotelmamatemaattinen optimointimonitavoiteoptimointicomputational costlaskennallinen vaativuus
researchProduct

Unmixing methods in novel applications of spectral imaging

2014

hyperspectral imagingrikospaikkaimaging spectrometryspektrografilaskennallinen vaativuusympäristön tilaanalysmetoderihosyöpäskin abnormalitiesesitutkintaspectral unmixinghudcancerbrottsplatsenvironmental monitoringspektrografiamiljöövervakningspektral avbildningtarget detectionmiljöns tillståndspektrikuvausanalyysimenetelmätförundersökningforensicskuvantaminenympäristövalvontahyperspektrikuvaus
researchProduct

Efficient numerical methods for simulating continuous casting processes

2014

nonlinear Chernoff formulavalimotekniikkaosittaisdifferentiaaliyhtälötjatkuvavalumethod of characterisiticsnumeeriset menetelmätcontinuous castinglaskennallinen vaativuusvalutermodynamiikkatwo-phase Stefan problemsimulointiupwindingmatemaattiset mallit
researchProduct