breast cancer is a malignant tumor and the most common cancer among american women that starts from cells of the breast. the growth of the size of data exceeds the ability of humans to analyze the data. so we need some intelligent machines that can analyze datasets intelligently for us. we propose a multi nominal logit model to evaluate correlation between risk factors of breast tumor. our mode...

The paired combinatorial logit (PCL) model is one of the recent extended logit models adapted to resolve the overlapping problem in the route choice problem, while keeping the analytical tractability of the logit choice probability function. However, the development of efficient algorithms for solving the PCL model under congested and realistic networks is quite challenging, since it has large-...

There have been many studies that have documented the application of crash severity models to explore the relationship between accident severity and its contributing factors. Although a large amount of work has been done on different types of models, no research has been conducted about quantifying the sample size requirements for crash severity modeling. Similar to count data models, small dat...

In contrast to the classical discrete choice experiment, the respondent in a rank-order discrete choice experiment, is asked to rank a number of alternatives instead of the preferred one. In this paper, we study the information matrix of a rank order nested multinomial logit model (RO.NMNL) and introduce local D-optimality criterion, then we obtain Locally D-optimal design for RO.NMNL models in...

the lake urmia and its satellite wetlands have been selected as a demonstration site for the united nations development program / global environment facility / department of environment conservation of iranian wetlands project. this project aims to demonstrate reduction of the major threats of this wetland protected area coordinated through an integrated management plan. a choice experiment was...

this study determines the consumers’ willingness to pay for organic milk in tehran by using contingent valuation method and single bounded dichotomous choice questionnaire. logit regression model was used to evaluate the effect of explanatory variables on willingness to pay and the model parameters were estimated by using maximum likelihood approach. for this purpose, 450 questionnaires were co...

abstract this paper carried out to study determinants of willingness to pay and ecotourism value of tandoreh natioral park using cross section data of 144 households of dargaz and ghochan and contingent value method and logit model in 2008. results showed that age and entrance offer have negative effect and income have positive effect on willingness to pay for ecotourism in tandoreh natioral pa...

Empirical studies on the relationship between income and happiness commonly use standard ordered response models, the most well-known representatives being the ordered logit and the ordered probit. However, these models restrict the marginal probability effects by design, and therefore limit the analysis of distributional aspects of a change in income, that is, the study of whether the income e...

Mixed Treatment Comparisons (MTCs) enable the simultaneous meta-analysis (data pooling) of networks of clinical trials comparing ≥ 2 alternative treatments. Inconsistency models are critical in MTC to assess the overall consistency between evidence sources. Only in the absence of considerable inconsistency can the results of an MTC (consistency) model be trusted. However, inconsistency model sp...