113 research outputs found
Algorithms for neutrosophic soft decision making based on EDAS and new similarity measure
This paper presents two novel single-valued neutrosophic soft set (SVNSS) methods.First, we initiate a new axiomatic definition of single-valued neutrosophic simlarity measure, which is expressed by single-valued neutrosophic number (SVNN) that will reduce the information loss and remain more original information
Fuzzy decision making method based on CoCoSo with critic for financial risk evaluation
The financial risk evaluation is critically vital for enterprises to identify the potential financial risks, provide decision basis for financial risk management, and prevent and reduce risk losses. In the case of considering financial risk assessment, the basic problems that arise are related to strong fuzziness, ambiguity and inaccuracy. q-rung orthopair fuzzy set (q-ROFS), portrayed by the degrees of membership and non-membership, is a more resultful tool to seize fuzziness. In this article, the novel q-rung orthopair fuzzy score function is given for dealing the comparison problem. Later, the and operations are explored and their interesting properties are discussed. Then, the objective weights are calculated by CRITIC (Criteria Importance Through Inter-criteria Correlation). Moreover, we present combined weights that reflects both subjective preference and objective preference. In addition, the q-rung orthopair fuzzy MCDM (multi-criteria decision making) algorithm based on CoCoSo (Combined Compromise Solution) is presented. Finally, the feasibility of algorithm is stated by a financial risk evaluation example with corresponding sensitivity analysis. The salient features of the proposed algorithm are that they have no counter-intuitive case and have a stronger capacity in differentiating the best alternative.
First published online 03 March 202
Fourth order transport model on Yin-Yang grid by multi-moment constrained ļ¬nite volume scheme
AbstractA fourth order transport model is proposed for global computation with the application of multi-moment constrained ļ¬nite volume (MCV) scheme and Yin-Yang overset grid. Using multi-moment concept, local degrees of freedom (DOFs) are point-wisely deļ¬ned within each mesh element to build a cubic spatial reconstruction. The updating formulations for local DOFs are derived by adopting multi moments as constraint conditions, including volume-integrated average (VIA), point value (PV) and ļ¬rst order derivative value (DV). Using Yin-Yang grid eliminates the polar singularities and results in a quasi-uniform mesh over the whole globe. Each component of Yin-Yang grid is a part of the LAT-LON grid, an orthogonal structured grid, where the MCV formulations designed for Cartesian grid can be applied straightforwardly to develop the high order numerical schemes. Proposed MCV model is checked by widely used benchmark tests. The numerical results show that the present model has fourth order accuracy and is competitive to most existing ones
Fair Causal Feature Selection
Causal feature selection has recently received increasing attention in
machine learning. Existing causal feature selection algorithms select unique
causal features of a class variable as the optimal feature subset. However, a
class variable usually has multiple states, and it is unfair to select the same
causal features for different states of a class variable. To address this
problem, we employ the class-specific mutual information to evaluate the causal
information carried by each state of the class attribute, and theoretically
analyze the unique relationship between each state and the causal features.
Based on this, a Fair Causal Feature Selection algorithm (FairCFS) is proposed
to fairly identifies the causal features for each state of the class variable.
Specifically, FairCFS uses the pairwise comparisons of class-specific mutual
information and the size of class-specific mutual information values from the
perspective of each state, and follows a divide-and-conquer framework to find
causal features. The correctness and application condition of FairCFS are
theoretically proved, and extensive experiments are conducted to demonstrate
the efficiency and superiority of FairCFS compared to the state-of-the-art
approaches
Pythagorean Fuzzy Multisets and their Applications to Therapeutic Analysis and Pattern Recognition
Most of the real life problems embroil uncertainties, imprecision and vagueness. Fuzzy multisets and Pythagorean fuzzy sets, initially suggested by Yager, are significant mathematical models to handle such real world problems. By combining these two notions, we introduce a new kind of hybrid mathematical model: Pythagorean fuzzy multisets (PFM-sets). We present some prime concepts of Pythagorean fuzzy multisets and establish various algebraic operations on them along with some important results. We render two applications to multi-attribute group decision making (MAGDM), accompanied by algorithms and flow charts, established on PFM-sets: One in therapeutic analysis linking medical and mathematical sciences and the other in pattern recognition
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