Influence of Metric on Classification Error of Distance-Based Classifiers
Jiřina, Marcel
2014 - English
Five types of classifiers that use sample distances for class estimation of an unknown sample was tested. Each classifier was tested with fifteen different metrics on 24 classification tasks from the UCI Machine Learning Repository. The metrics were compared and the best of them was found for each classifier. Surprisingly, the best metrics for all five types of classifiers is the Hassanat metrics. Classifiers were also compared and ranked according to their classification ability. Wilcoxon Test and Friedman Aligned test were used for statistical evaluation.
Keywords:
multidimensional data; classifier; distance; metrics; Hassanat metrics; k-NN; IINC
Available in a digital repository NRGL
Influence of Metric on Classification Error of Distance-Based Classifiers
Five types of classifiers that use sample distances for class estimation of an unknown sample was tested. Each classifier was tested with fifteen different metrics on 24 classification tasks from the ...
IINC classifier for MS Excel. The principle, method and Program
Jiřina, Marcel
2014 - English
Keywords:
multivariate data; classification; Excel; Hassanat’s metric
Available in a digital repository NRGL
IINC classifier for MS Excel. The principle, method and Program
Propagation of elastic waves in fractured media under a self-gravity field
Nedoma, Jiří
2013 - English
Propagation of elastic waves in fractured media, that is, in broken media with contact boundaries between bodies being in mutual contacts, and under self-gravity eld will be discussed. Such problems are e.g. problems of global seismology. For numerical solution the spectral-element method can be used with a great merit. The paper extends the global seismology results to problems modelling elastic wave propagations in the global Earth with a fractured lithosphere and under a self-gravitation. Numerical solution of the model problem, based on its variational formulation and the spectral-element method, is presented. V článku se řeší šíření elastických vln v rozlámaném elastickém prostředí, které se nachází v gravitačním poli. Modelová úloha je rozšířením úlohy šíření seismických vln v zemském tělese. Numerické řešení modelového problému je založeno na variační formulaci kontaktní úlohy a SEM metodě.
Keywords:
propagation of elastic waves; global model of the Earth; fractured lithosphere; elastic and fluid rheologies; self-gravitating; contact problems; variational and numerical solutions; algorithm
Available in a digital repository NRGL
Propagation of elastic waves in fractured media under a self-gravity field
Propagation of elastic waves in fractured media, that is, in broken media with contact boundaries between bodies being in mutual contacts, and under self-gravity eld will be discussed. Such problems ...
Score Function of Distribution and Revival of the Moment Method. Final Version
Fabián, Zdeněk
2013 - English
Keywords:
score function; characteristics of distributions; parametric methods; general moment method; data characteristics; Huber moment estimator
Available in a digital repository NRGL
Score Function of Distribution and Revival of the Moment Method. Final Version
Efficient tridiagonal preconditioner for the matrix-free truncated Newton method
Lukšan, Ladislav; Vlček, Jan
2013 - English
Keywords:
unconstrained optimization; large scale optimization; matrix-free truncated Newton method; preconditioned conjugate gradient method; preconditioners obtained by the directional differentiation; numerical algorithms
Available in a digital repository NRGL
Efficient tridiagonal preconditioner for the matrix-free truncated Newton method
Models of Bone Cancers - Part I. Mathematical Models of Cancers. An Introduction
Nedoma, Jiří
2013 - English
Keywords:
neoplasms; cancers; long bones; spine; jaw-bones; growth of tumors; mathematical models; numerical methods; algorithms
Available in a digital repository NRGL
Models of Bone Cancers - Part I. Mathematical Models of Cancers. An Introduction
Correlation and heavy-tails
Fabián, Zdeněk
2013 - English
Keywords:
score function of distribution; score correlation; heavy tails
Available in a digital repository NRGL
Correlation and heavy-tails
A Bendixson-Type Theorem for Eigenvalues of Interval Matrices
Rohn, Jiří
2013 - English
Keywords:
interval matrix; eigenvalues; enclosure; symmetric interval matrix; skew-symmetric interval matrix
Available in a digital repository NRGL
A Bendixson-Type Theorem for Eigenvalues of Interval Matrices
Nástroj pro vzdálené použití NNSU algoritmu pro separaci dat (uživatelský manuál)
Hakl, František
2013 - English
Tento manuál popisuje základní použití serveru NNSU (paralelní implementace neuronové sítě s přepínacími jednotkami), který umožnuje vzdálený přístup k implementaci algoritmu NNSU a jeho pilotní použití na separování dat zaslaných na server. Účelem této volně přístupné aplikace je otestování vhodnosti separátoru na separaci uživatelských dat. Obsahem tohoto uživatelského návodu jsou informace postačující k využívání NNSU serveru, které popisují zpusob práce s daty určenými k separaci, způsob definování použité neuronové sítě, zadání výpočtu a metody hodnocení výsledné kvality separace.
Keywords:
separace dat; neuronové sítě; paralelní výpočty
Available in a digital repository NRGL
Nástroj pro vzdálené použití NNSU algoritmu pro separaci dat (uživatelský manuál)
Tento manuál popisuje základní použití serveru NNSU (paralelní implementace neuronové sítě s přepínacími jednotkami), který umožnuje vzdálený přístup k implementaci algoritmu NNSU a jeho pilotní ...
A Triple Sufficient Condition for Regularity of Interval Matrices
Rohn, Jiří
2013 - English
Keywords:
interval matrix; regularity; sufficient condition
Available in a digital repository NRGL
A Triple Sufficient Condition for Regularity of Interval Matrices
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