نتایج جستجو برای: Logistic Regression

تعداد نتایج: 330097  

Journal: :iranian journal of fuzzy systems 2011
saeedeh pourahmad s. mohammad taghi ayatollahi s. mahmoud taheri

logistic regression models are frequently used in clinicalresearch and particularly for modeling disease status and patientsurvival. in practice, clinical studies have several limitationsfor instance, in the study of rare diseases or due ethical considerations, we can only have small sample sizes. in addition, the lack of suitable andadvanced measuring instruments lead to non-precise observatio...

Journal: :Circulation 2008

1998
George W. Taylor Mark P. Becker

The common practice of collapsing inherently continuous or ordinal variables into two categories causes information loss that may potentially weaken power to detect effects of explanatory variables and result in Type II errors in statistical inference. The purpose of this investigation was to illustrate, using a substantive example, the potential increase in power gained from an ordinal instead...

Journal: :international journal of finance, accounting and economics studies 0

the purpose of this study is presenting a model forecasting financial crisis in tehran stock exchange listed companies. to do this, productive firms that had been accepted in tehran stock exchange between 2002 and 2009, were selected as the study sample. first the independent variables were obtained based on financial ratios and then based on article 141 of the law of commerce, the insolvent an...

Journal: :The Annals of Statistics 1981

Journal: :American Journal of Orthodontics and Dentofacial Orthopedics 2018

Journal: :American Journal of Orthodontics and Dentofacial Orthopedics 2017

Journal: :Czech Sociological Review 2000

Journal: :iranian journal of veterinary research 2015
z. hadi h. atashi m. dadpasand a. derakhshandeh m. m. ghahramani seno

the aim of this study was to investigate the potential association between growth hormone gh/alui and growth hormone receptor ghr/alui polymorphisms with milk yield and reproductive performances in holstein dairy cows in iran. blood samples of 150 holstein cows were collected and their genomic dna was extracted using gene-fanavaran dna extracting kit. fragments of the 428 bp of exon 5 growth ho...

2013
Tsung-Yi Lin Chen-Yu Lee

Logistic regression is a technique to map the input feature to the posterior probability for a binary class. The optimal parameter of regression function is obtained by maximizing log likelihood of training data. In this report, we implement two optimization techniques 1) stochastic gradient decent (SGD); 2) limited-memory BroydenFletcherGoldfarbShanno (L-BFGS) to optimize the log likelihood fu...

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