The Matrix Theory S – Matrix Jan

A Block-Wise random sampling approach: Compressed sensing problem

The focus of this paper is to consider the compressed sensing problem. It is stated that the compressed sensing theory, under certain conditions, helps relax the Nyquist sampling theory and takes smaller samples. One of the important tasks in this theory is to carefully design measurement matrix (sampling operator). Most existing methods in the literature attempt to optimize a randomly initiali...

APPLICATION OF THE RANDOM MATRIX THEORY ON THE CROSS-CORRELATION OF STOCK ‎PRICES

The analysis of cross-correlations is extensively applied for understanding of interconnections in stock markets. Variety of methods are used in order to search stock cross-correlations including the Random Matrix Theory (RMT), the Principal Component Analysis (PCA) and the Hierachical ‎Structures.‎ In ‎this work‎, we analyze cross-crrelations between price fluctuations of 20 ‎company ‎stocks‎...

The theory of matrix-valued multiresolution analysis frames

Multiple attribute group decision making with linguistic variables and complete unknown weight information

Interval type-2 fuzzy sets, each of which is characterized by the footprint of uncertainty, are a very useful means to depict the linguistic information in the process of decision making. In this article, we investigate the group decision making problems in which all the linguistic information provided by the decision makers is expressed as interval type-2 fuzzy decision matrices where each of ...

Comparison of the Effectiveness of matrix therapy and modern group reality therapy based on choice theory on resilience and social adjustment in methamphetamine-dependent men who are treated with buprenorphine

Purpose:The purpose of this study was to compare the effectiveness of matrix treatment and modern group reality therapy based on choice theory on resilience and social adjustment in methamphetamine-dependent men who are treated with buprenorphine. Methods: The research was a experimental study with a pretest-posttest with control group. The statistical population of the study consisted of All m...