نتایج جستجو برای: variation linear regression method
تعداد نتایج: 2441469 فیلتر نتایج به سال:
In this study, the temperature in friction stir welding of duplex stainless steel has been investigated. At first, temperature estimation was modeled and estimated at different distances from the center of the stir zone by the multivariate Lagrangian function. Then, the linear extrapolation method and multiple linear regression method were used to estimate the temperature outside the range and ...
This paper concerns the theoretical analysis of step-by-step methods for solving initial value problems in ordinary and partial differential equations. The main theorem of the paper answers a natural question arising in the linear stability analysis of such methods. It guarantees a (strong) version of numerical stability – under a stepsize restriction related to the stability region of the nume...
Sampling is a common way to collect execution information with performance event counters. However, the sampling data generated from performance event counters tend to be massive if sampling with high frequencies. Storing and processing a large amount of sampling data require much disk space and computing time. In this paper, we propose the online linear regression method to reduce the size of ...
the fuzzy linear regression model with fuzzy input-output data andcrisp coefficients is studied in this paper. a linear programmingmodel based on goal programming is proposed to calculate theregression coefficients. in contrast with most of the previous works, theproposed model takes into account the centers of fuzzy data as animportant feature as well as their spreads in the procedure ofconstr...
In this paper, the difference between classical regression and fuzzy regression is discussed. In fuzzy regression, nonphase and fuzzy data can be used for modeling. While in classical regression only non-fuzzy data is used. The purpose of the study is to investigate the possibility of regression method, least squares regression based on regression and linear least squares linear regression met...
The major objective of this paper is to identify and determine the factors responsible for increase in rural incomes and job offers in Gilan province. The research method is based on descriptive-analytical as well as applied approach. Statistical society composed of rural settlers in Gilan. At the beginning of process ٤٥ villages were extracted using stratified sampling technique for extracting...
This paper deals with the modeling, analysis, design and simulation of a robust control method for a permanent magnet synchronous machine (PMSM) supplied with a PWM inverter based on a LPV (Linear Parameter Variation) standard controller. Under the influence of uncertainties and external disturbances, by a variation of ±150% of motor parameters from the nominal values, the robust performance c...
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