Grammatical evolution using two-dimensional gene for symbolic regression: an advanced improvement with conditional statement grammar

2016 ◽  
Vol 5 (3/4) ◽  
pp. 237
Author(s):  
Yi Zuo ◽  
Eisuke Kita ◽  
Masahiro Nagao ◽  
Hideyuki Sugiura
Keyword(s):  
Symbolic Regression ◽  
Grammatical Evolution ◽  
Two Dimensional ◽  
Conditional Statement

scholarly journals Analytic Programming – a Novel Tool for Synthesis of Controller for Chaotic Lozi Map

2021 ◽  
Vol 15 ◽  
pp. 50-55
Author(s):  
Roman Senkerik ◽  
Zuzana Kominkova Oplatkova ◽  
Michal Pluhacek
Keyword(s):  
Feedback Control ◽  
Differential Evolution ◽  
Cost Function ◽  
Chaotic System ◽  
Chaotic Systems ◽  
Symbolic Regression ◽  
Control Law ◽  
Two Dimensional ◽  
Function Design ◽  
Analytic Programming

In this paper, it is presented a utilization of a novel tool for symbolic regression, which is analytic programming, for the purpose of the synthesis of a new feedback control law. This new synthesized chaotic controller secures the fully stabilization of selected discrete chaotic systems, which is the two-dimensional Lozi map. The paper consists of the descriptions of analytic programming as well as selected chaotic system, used heuristic and cost function design. For experimentation, Self-Organizing Migrating Algorithm (SOMA) and Differential evolution (DE) were used. Two selected experiments are detailed described.

scholarly journals Towards Automatic Grammatical Evolution for Real-world Symbolic Regression

2021 ◽  
Author(s):  
Muhammad Ali ◽  
Meghana Kshirsagar ◽  
Enrique Naredo ◽  
Conor Ryan
Keyword(s):  
Real World ◽  
Symbolic Regression ◽  
Grammatical Evolution

scholarly journals Multilayer analysis of population diversity in grammatical evolution for symbolic regression

2020 ◽  
Vol 24 (15) ◽  
pp. 11283-11295
Author(s):  
Gabriel Kronberger ◽  
J. Manuel Colmenar ◽  
Stephan M. Winkler ◽  
J. Ignacio Hidalgo
Keyword(s):  
Symbolic Regression ◽  
Population Diversity ◽  
Grammatical Evolution

Spectrophotometric measurements of objective-prism spectra

1966 ◽  
Vol 24 ◽  
pp. 118-119
Author(s):  
Th. Schmidt-Kaler
Keyword(s):  
Progress Report ◽  
Two Dimensional ◽  
Objective Prism ◽  
Made In

I should like to give you a very condensed progress report on some spectrophotometric measurements of objective-prism spectra made in collaboration with H. Leicher at Bonn. The procedure used is almost completely automatic. The measurements are made with the help of a semi-automatic fully digitized registering microphotometer constructed by Hög-Hamburg. The reductions are carried out with the aid of a number of interconnected programmes written for the computer IBM 7090, beginning with the output of the photometer in the form of punched cards and ending with the printing-out of the final two-dimensional classifications.

Introductory paper

1966 ◽  
Vol 24 ◽  
pp. 3-5
Author(s):  
W. W. Morgan
Keyword(s):  
Line Intensity ◽  
Classification Scheme ◽  
Two Dimensional ◽  
Spectral Classification ◽  
Dimensional Array ◽  
Rr Lyrae ◽  
Metallic Line ◽  
Introductory Paper ◽  
Parameter Varying ◽  
Definition Of

1. The definition of “normal” stars in spectral classification changes with time; at the time of the publication of theYerkes Spectral Atlasthe term “normal” was applied to stars whose spectra could be fitted smoothly into a two-dimensional array. Thus, at that time, weak-lined spectra (RR Lyrae and HD 140283) would have been considered peculiar. At the present time we would tend to classify such spectra as “normal”—in a more complicated classification scheme which would have a parameter varying with metallic-line intensity within a specific spectral subdivision.

A one-dimensional self-gravitating stellar gas

1966 ◽  
Vol 25 ◽  
pp. 46-48 ◽  
Author(s):  
M. Lecar
Keyword(s):  
Gravitational Field ◽  
Phase Space ◽  
Motion Picture ◽  
Space Distribution ◽  
Two Dimensional ◽  
One Dimensional ◽  
Phase Space Distribution ◽  
Dimensional Phase Space ◽  
The Mean

“Dynamical mixing”, i.e. relaxation of a stellar phase space distribution through interaction with the mean gravitational field, is numerically investigated for a one-dimensional self-gravitating stellar gas. Qualitative results are presented in the form of a motion picture of the flow of phase points (representing homogeneous slabs of stars) in two-dimensional phase space.

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