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Research on Chinese Stock Market during COVID-19—Based on Random Matrix Theory.
Publication Type: Academic Journal
Source(s): Complexity. 3/18/2023, p1-16. 16p.
Abstract: This paper focuses on the three industries that are greatly impacted by COVID-19, including the consumption industry, the pharmaceutical industry, and the financial industry. The daily returns of 98 stocks in the consumption industry, the pharmaceutica...
Using Inconsistency Reduction Algorithms in Comparison Matrices to Improve the Performance of Generating Random Comparison Matrices with a Given Inconsistency Coefficient Range.
Publication Type: Academic Journal
Source(s): Advances in Science & Technology - Research Journal. 2023, Vol. 17 Issue 1, p222-229. 8p.
Abstract: The aim of this paper is to present a new method for generating random pairwise comparison matrices with a given inconsistency ratio (CR) interval using inconsistency reduction algorithms. Pairwise comparison (PC) is a popular technique for multi-crite...
Efficient Inverse Model for Cloud Computing and Information Based on the Symmetric Random Matrix.
Publication Type: Academic Journal
Source(s): Mathematical Problems in Engineering. 9/21/2022, p1-11. 11p.
Abstract: With the continuous development of cloud storage technology, cloud storage has become a new way of storage for both enterprises and individuals. The cloud environment can support users to share data, but it can lead to some malicious users accessing or...
Estimating the probability that a given vector is in the convex hull of a random sample.
Publication Type: Academic Journal
Source(s): Probability Theory & Related Fields. Apr2023, Vol. 185 Issue 3/4, p705-746. 42p.
Abstract: For a d-dimensional random vector X, let p n , X (θ) be the probability that the convex hull of n independent copies of X contains a given point θ . We provide several sharp inequalities regarding p n , X (θ) and N X (θ) denoting the smallest n for whi...
Establishment of a Fuzzy Comprehensive Evaluation Random Matrix Model for the Assessment of Foreign Language Translation Level in Universities.
Publication Type: Academic Journal
Source(s): Mathematical Problems in Engineering. 8/27/2022, p1-11. 11p.
Abstract: In this paper, the random matrix method of a fuzzy comprehensive evaluation is used to conduct in-depth research and analysis on the assessment of foreign language translation levels in universities, and the corresponding model is designed for the auto...
Ultrastructural calibration model for proficiency testing.
Publication Type: Academic Journal
Source(s): Journal of Applied Statistics. Apr2023, Vol. 50 Issue 5, p1037-1059. 23p. 6 Charts, 6 Graphs.
Abstract: Proficiency testing (PT) determines the performance of individual laboratories for specific tests or measurements and it is used to monitor the reliability of laboratories measurements. PT plays a highly valuable role as it provides objective evidence ...
Empirical Analysis of the Impact of High and New Technology on the Export of Traditional Cultural Industry Based on Random Matrix Theory.
Publication Type: Academic Journal
Source(s): Mathematical Problems in Engineering. 8/26/2022, p1-10. 10p.
Abstract: Accurate estimation of covariance matrix is the basis of effective development of high-dimensional optimal portfolio. Random matrix theory provides an effective means to improve the estimation of high-dimensional covariance matrix. Based on the empiric...
Attribution Interpretation of Urban Marathon Events Based on Random Matrix Model.
Publication Type: Academic Journal
Source(s): Mathematical Problems in Engineering. 8/12/2022, p1-10. 10p.
Abstract: The arrival of the national fitness boom has enabled the marathon as a large-scale sports event to attract the attention of a sufficient number of sports enthusiasts in a relatively short period of time. These people attracted by the event will have a ...
Reliability Analysis of Sports Training Evaluation Index Based on Random Matrix.
Publication Type: Academic Journal
Source(s): Mathematical Problems in Engineering. 8/11/2022, p1-11. 11p.
Abstract: This paper presents an in-depth study and analysis of the reliability of indicators for the evaluation of sports training using the algorithm of random matrices. Random matrix theory is used to obtain the degree of randomness of the data and the overal...
Art Financial Risk Prediction Algorithm Based on Random Matrix.
Publication Type: Academic Journal
Source(s): Mathematical Problems in Engineering. 7/30/2022, p1-10. 10p.
Abstract: Random matrix theory is applied in the financial field to study the correlation of the financial correlation coefficient matrix, which is a key factor in network construction. In this paper, the random matrix theory is combined with network constructio...