Results 31 to 40 of about 1,623,179 (299)
Discretization methods for optimal control problems with state constraints [PDF]
, 2006 We consider an optimal control problem described by nonlinear ordinary differential equations, with control and state constraints, including pointwise state constraints. Since this problem may have no classical solutions, it is also formulated in relaxed
Kokkinis, B. +5 more
core +1 more source
cAnt-Miner: an ant colony classification algorithm to cope with continuous attributes [PDF]
, 2008 This paper presents an extension to Ant-Miner, named cAnt-Miner (Ant-Miner coping with continuous attributes), which incorporates an entropy-based discretization method in order to cope with continuous attributes during the rule construction process.
Otero, Fernando E.B. +5 more
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The Egyptian Journal of Neurology, Psychiatry and Neurosurgery, 2023 Background Platelets are implicated in the pathophysiology of intracerebral hemorrhage (ICH). Platelet count (PLT) is affected by platelet loss, while mean platelet volume (MPV) by platelet replenishment. Whether platelet mass index (PMI), the product of
Despoina Avramidou +3 more
doaj +1 more source
BMC Medical Research Methodology, 2019 Background In clinical and epidemiological researches, continuous predictors are often discretized into categorical variables for classification of patients.
Yimin Chen +6 more
doaj +1 more source
Lattice scars: surviving in an open discrete billiard
New Journal of Physics, 2014 We study quantum systems on a discrete bounded lattice (lattice billiards). The statistical properties of their spectra show universal features related to the regular or chaotic character of their classical continuum counterparts. However, the decay dynamics of the open systems appear very different from the continuum case, their properties being ...
Víctor Fernández-Hurtado +3 more
openaire +4 more sources
A New One-Parameter Model by Extending Maxwell–Boltzmann Theory to Discrete Lifetime Modeling
MathematicsThe Maxwell–Boltzmann (MB) distribution is fundamental in statistical physics, providing an exact description of particle speed or energy distributions.
Ahmed Elshahhat +2 more
doaj +1 more source
A Discrete Analog of Inverted Topp-Leone Distribution: Properties, Estimation and Applications
International Journal of Analysis and Applications, 2021 In this study, a discrete inverted Topp-Leone (DITL) distribution is proposed by utilizing the survival discretization approach. The proposed distribution's mathematical features were derived.
Ahmed Sedky Eldeeb +2 more
doaj
Polygenic risk modeling of tumor stage and survival in bladder cancer
BioData Mining, 2022 Introduction Bladder cancer assessment with non-invasive gene expression signatures facilitates the detection of patients at risk and surveillance of their status, bypassing the discomforts given by cystoscopy.
Mauro Nascimben +3 more
doaj +1 more source
Constructing a New Probability Distribution to Improve the Goodness of Fit in Modeling Some Discrete Data (Applied Study) [PDF]
المجلة العلمية للدراسات والبحوث المالية والتجاريةThis study uses a novel two-stage discretization framework to improve goodness-of-fit in modeling discrete lifetime data. To enhance structural flexibility, a generalized continuous lifetime distribution was derived in the first stage.
Yasmine Elkholany +2 more
doaj +1 more source
Federated Survival Analysis with Discrete-Time Cox Models
CoRR, 2020 21 pages, 6 ...
Mathieu Andreux +4 more
openaire +2 more sources