نتایج جستجو برای: loss function

تعداد نتایج: 1561973  

Journal: :مدیریت صنعتی 0
ابوالقاسم ابراهیمی استادیار گروه مدیریت، دانشکدۀ اقتصاد، مدیریت و علوم اجتماعی، دانشگاه شیراز، شیراز، ایران مسلم علی محمدلو استادیار گروه مدیریت، دانشکدۀ اقتصاد، مدیریت و علوم اجتماعی، دانشگاه شیراز، شیراز، ایران سحر محمدی دانشجوی کارشناسی ارشد مدیریت صنعتی، دانشگاه شیراز، شیراز، ایران

this paper has been done with the goal of assessment and prioritization of contractors of fars province electricity distribution company. such decision makings are generally complicated and are essentially considered as an multi-criteria decision making process. if the tasks assigned to contractors are not performed appropriately, it would lead to loss. in other words, contractors who cause the...

The improved estimator of the variance in the general linear model is presented under an asymmetric linex loss function.

Ahmad Parsian, Ashkan Ertefaie,

The use of the Pareto distribution as a model for various socio-economic phenomena dates back to the late nineteenth century. In this paper, after some necessary preliminary results we deal with Bayes estimation of some of the parameters of interest under an asymmetric LINEX loss function, using suitable choice of priors when the scale parameter is known and unknown. Results of a Monte C...

Stock market forecasting has attracted so many researchers and investors that ‎many studies have been done in this field. These studies have led to the ‎development of many predictive methods, the most widely used of which are ‎machine learning-based methods. In machine learning-based methods, loss ‎function has a key role in determining the model weights. In this study a new loss ‎function is ...

پایان نامه :0 1391

uncertainty in the financial market will be driven by underlying brownian motions, while the assets are assumed to be general stochastic processes adapted to the filtration of the brownian motions. the goal of this study is to calculate the accumulated wealth in order to optimize the expected terminal value using a suitable utility function. this thesis introduced the lim-wong’s benchmark fun...

In this paper, we introduce a new sampling plan based on the defective proportion of batch. The proposed sampling plan is based on the distribution function of the proportion defective. A continuous loss function is used to quantify deviations between the proportion defective and its acceptance quality level (AQL).  For practical purpose, a sensitivity analysis is carried out on the different v...

ژورنال: اندیشه آماری 2011
Bevrani, H, Najaf, N,

This paper is devoted to computing the sample size of binomial distribution with Bayesian approach. The quadratic loss function is considered and three criterions are applied to obtain p-tolerance regions with the lowest posterior loss. These criterions are: average length, average coverage and worst outcome.

پایان نامه :0 1391

بیمه گران همیشه بابت خسارات بیمه نامه های تحت پوشش خود نگران بوده و روش هایی را جستجو می کنند که بتوانند داده های خسارات گذشته را با هدف اتخاذ یک تصمیم بهینه مدل بندی نمایند. در این پژوهش توزیع های فیزتایپ در مدل بندی داده های خسارات معرفی شده که شامل استنباط آماری مربوطه و استفاده از الگوریتم em در برآورد پارامترهای توزیع است. در پایان امکان استفاده از این توزیع در مدل بندی داده های گروه بندی ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه فردوسی مشهد - دانشکده علوم 1377

chapter one is devoted to a moderate discussion on preliminaries, according to our requirements. chapter two which is based on our work in (24) is devoted introducting weighted semigroups (s, w), and studying some famous function spaces on them, especially the relations between go (s, w) and other function speces are invesigated. in fact this chapter is a complement to (32). one of the main fea...

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