نتایج جستجو برای: cost estimating method

تعداد نتایج: 2010231  

In this paper, the concept of Conjectural Variation (CV) is used to specify optimal generation decision for generation companies (Gencos). The conjecture of Genco is defined as its belief or expectation about the reaction of rivals to change of its output. Using CV method, each Genco has to learn and estimate strategic behaviors of other competitors from available historical market operation da...

2013
David Byrne Masayuki Hirukawa Susumu Imai Vasilis Sarafidis

In this paper, we propose a methodology of jointly estimating the demand and cost functions of the differentiated goods oligopoly models when there are both data on demand and cost of firms. An important characteristics of the method is that it deals both with endogeneity of prices from the unobserved quality term, and the endogeneity of output in the cost function from the unobserved cost shoc...

2008
Frederick K. H. Phoa Yu-Hui Pan Hongquan Xu

A supersaturated design is a design whose run size is not enough for estimating all the main effects. It is commonly used in screening experiments, where the goals are to identify sparse and dominant active factors with low cost. In this paper, we study a variable selection method via the Dantzig selector, proposed by Candes and Tao (2007), to screen important effects. A graphical procedure and...

2015
David P. Byrne Susumu Imai Vasilis Sarafidis Masayuki Hirukawa

We propose a new methodology for estimating the demand and cost functions of differentiated products models when demand and cost data are available. The method deals with the endogeneity of prices to demand shocks and the endogeneity of outputs to cost shocks, but does not require instruments for identification. We establish non-parametric identification, consistency and asymptotic normality of...

2004
Panagiotis Sentas Lefteris Angelis Ioannis Stamelos G. L. Bleris

A common problem in software cost estimation is the manipulation of incomplete or missing data in databases used for the development of prediction models. In such cases, the most popular and simple method of handling missing data is to ignore either the projects or the attributes with missing observations. This technique causes the loss of valuable information and therefore may lead to inaccura...

2014
E. Praynlin

Software Effort Estimation is the process of estimating the effort required to develop software. By estimating the effort, the cost and schedule required to estimate the software can be determined. Accurate Estimate helps the developer to allocate the resource accordingly in order to avoid cost overrun and schedule overrun. Several methods are available in order to estimate the effort among whi...

2009
Gan Wang Alex Shernoff Jon Turnidge Ricardo Valerdi

In this paper, we explore a new approach for a unified and interdisciplinary parametric model for estimating the total engineering effort in developing and delivering a software-intensive complex system. We begin by reviewing some of the limitations of using existing engineering discipline-focused tools for estimating total engineering cost and by articulating the benefits of such a holistic mo...

2012
SHUAI CHEN Hongwei Zhao Lan Zhou Yu Ding Shuai Chen

Statistical Inference for Costs and Incremental Cost-Effectiveness Ratios with Censored Data. (May 2012) Shuai Chen, B.S., Peking University Co–Chairs of Advisory Committee: Dr. Hongwei Zhao Dr. Lan Zhou Cost-effectiveness analysis is widely conducted in the economic evaluation of new treatment options. In many clinical and observational studies of costs, data are often censored. Censoring brin...

Journal: :American Journal of Public Health 1990

2004
Vincent Mazet Cédric Carteret David Brie Jérôme Idier Bernard Humbert

In this paper, the problem of estimating the background of a spectrum is addressed. We propose to fit this background to a low-order polynomial, but rather than determining the polynomial parameters that minimise a least-squares criterion (i.e. a quadratic cost function), non-quadratic cost functions well adapted to the problem are proposed. To minimise these cost functions, we use the half-qua...

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