نتایج جستجو برای: random parameters logit model

تعداد نتایج: 2700240  

Journal: :پژوهش های اقتصادی ایران 0

the paper examines industrial concentration in iranian food products and beverages industries using firm level data aggregated to the 4-digit isic industry level between 2002 and 2004. based on different concentration indices the average level of concentration has increased slightly for the period of study. the empirical results show that increase in the level of concentration is more likely in...

Journal: :European Journal of Operational Research 2017
James W. Taylor

A challenge for the efficient operation of power systems and wind farms is the occurrence of wind power ramps, which are sudden large changes in the power output from a wind farm. This paper considers the probabilistic forecasting of a ramp event, defined as exceedance beyond a specified threshold. We directly model the exceedance probability using autoregressive logit models fitted to the chan...

2017
R. Michael Alvarez Jonathan Nagler Michael Alvarez

Theory: The spatial model of elections can better be represented by using conditional logit than by multinomial logit. The spatial model, and random utility models in general, suffer from a failure to adequately consider the sub­ stitutability of candidates sharing similar or identical issue positions. Hypotheses: Multinomial logit is not much better than successive applications of binomial log...

The study assessed the effects of agricultural practices on biodiversity in Olamaboro Local Government Are of Kogi State, Nigeria. One hundred and fifty (150) farmers (respondents) were sampled using simple random sampling technique from five council wards (30 farmers per council ward). Data collected were analyzed using descriptive statistics and Logit regression model. Results showed that 63%...

2013
Qiang Liu Thomas J. Steenburgh Sachin Gupta

Different instruments are relevant for different marketing objectives (category demand expansion or market share stealing). To help brand managers make informed marketing mix decisions, it is essential that marketing mix models appropriately measure the different effects of marketing instruments. Randomly Utility Maximizing (RUM) discrete choice models that have been applied to this problem mig...

Journal: :BMC Medical Research Methodology 2005
Farid Zayeri Anoshirvan Kazemnejad Navid Khanafshar Fatemeh Nayeri

BACKGROUND For analyzing a repeated ordinal response, it is common to use a multivariate cumulative logit model. This model may fit poorly, especially when a nonsymmetric response is available. In these cases, alternative strategies should be utilized. METHODS In this paper, we present a family of power transformations for the cumulative probabilities to model asymmetric departures from the r...

2010
Josef Broder Paat Rusmevichientong

We consider a stylized dynamic pricing model in which a monopolist prices a product to a sequence of customers, who independently make purchasing decisions based on the price offered according to a logit choice model. The parameters of the logit model are unknown to the seller, whose objective is to determine a pricing policy that minimizes the regret, which is the expected difference between t...

Journal: :international journal of agricultural science, research and technology in extension and education systems 0
ufedo shaibu department of agricultural economics and extension, kogi state university anyigba, nigeria mohammed ibrahim department of agricultural economics and extension, kogi state university anyigba, nigeria

the study analyzed farm households’ access and utilization of government health facilities in kogi state, nigeria. specifically, it described the socioeconomic characteristics of farm households, determined the level of accessibility to health facilities by farm households, and determined the factors that drive farm households’ utilization of government health facilities. a two staged random sa...

Journal: :اقتصاد و توسعه کشاورزی 0
وحید عزیزی ملیحه نیکوی محمد خالدی

this study was conducted at the aim of determining development strategies for marketing healthy food products. the study data was collected by conducting field survey and compeleting a questionnaire. using simple random sampling, about 400 hamedan citizens were selected in 2013. the data analysis was conducted by ordinal logit model with method of maximum likelihood. according to the results, 3...

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