Results 31 to 40 of about 77,146 (265)

Method for Developing Combinatorial Generation Algorithms Based on AND/OR Trees and Its Application

open access: yesMathematics, 2020
In this paper, we study the problem of developing new combinatorial generation algorithms. The main purpose of our research is to derive and improve general methods for developing combinatorial generation algorithms.
Yuriy Shablya   +2 more
doaj   +1 more source

Cosmological Cutting Rules

open access: yesJournal of High Energy Physics, 2021
Primordial perturbations in our universe are believed to have a quantum origin, and can be described by the wavefunction of the universe (or equivalently, cosmological correlators). It follows that these observables must carry the imprint of the founding
Scott Melville, Enrico Pajer
doaj   +1 more source

MHV gluon scattering in the massive scalar background and celestial OPE

open access: yesJournal of High Energy Physics, 2023
In this paper we study the tree-level OPE between two positive helicity outgoing gluons in the celestial CFT for the Yang-Mills theory chirally coupled to a massive scalar background. This theory breaks the translation as well as scale invariance.
Shamik Banerjee   +3 more
doaj   +1 more source

ForestSoft Set Approach for Estimating Innovation and Entrepreneurship Education in Universities through a Hierarchical and Uncertainty-Aware Analytical Framework [PDF]

open access: yesNeutrosophic Sets and Systems
This study introduces a novel application of ForestSoft Set (FSS) theory, an advanced extension of soft set theory, to evaluate the performance of innovation and entrepreneurship education (IEE) in universities.
Hairong Luo
doaj   +1 more source

Applications of cohomology to set theory II: Todorčević trees

open access: yesAnnals of Pure and Applied Logic, 1996
The author develops a cohomology theory for a class of \(\omega_1\)-trees. This continues the author's investigations in Part I [ibid. 71, 69-106 (1995; Zbl 0824.03029)] on application of cohomology to gaps. An \(\omega_1\)-tree \(T\) is special if there is a function \(f: T\to \mathbb{Z}\) such that if \(s< t\) then \(f(s)\neq f(t)\).
openaire   +1 more source

A Method for Temporal Fault Tree Analysis Using Intuitionistic Fuzzy Set and Expert Elicitation

open access: yesIEEE Access, 2020
Temporal fault trees (TFTs), an extension of classical Boolean fault trees, can model time-dependent failure behaviour of dynamic systems. The methodologies used for quantitative analysis of TFTs include algebraic solutions, Petri nets (PN), and Bayesian
Sohag Kabir   +4 more
doaj   +1 more source

Transforming structures by set interpretations [PDF]

open access: yesLogical Methods in Computer Science, 2007
We consider a new kind of interpretation over relational structures: finite sets interpretations. Those interpretations are defined by weak monadic second-order (WMSO) formulas with free set variables.
Thomas Colcombet, Christof Löding
doaj   +1 more source

Decision Tree Construction based on Rough Set Theory under Characteristic Relation [PDF]

open access: yesProceedings on Intelligent Systems and Knowledge Engineering (ISKE2007), 2007
Several approaches based on rough set have been proposed for constructing decision tree in complete information systems. In fact, many information systems are incomplete in practical applications. In this paper, a new algorithm, Decision Tree Construction based on Rough Set Theory under Characteristic Relation (DTCRSCR), is proposed for mining ...
Jianhuai Qi   +3 more
openaire   +1 more source

Scattering of conformal higher spin fields

open access: yesJournal of High Energy Physics, 2018
We develop a formalism for describing the most general notion of tree-level scattering amplitudes in 4d conformal higher spin theory. As conformal higher spin fields obey higher-derivative equations of motion, there are many distinct on-shell external ...
Tim Adamo   +2 more
doaj   +1 more source

Improvement of ID3 Algorithm Based on Simplified Information Entropy and Coordination Degree

open access: yesAlgorithms, 2017
The decision tree algorithm is a core technology in data classification mining, and ID3 (Iterative Dichotomiser 3) algorithm is a famous one, which has achieved good results in the field of classification mining.
Yingying Wang   +4 more
doaj   +1 more source

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