Search Results for author: Youssef M. Aboutaleb

Found 3 papers, 1 papers with code

Discrete Choice Analysis with Machine Learning Capabilities

no code implementations21 Jan 2021 Youssef M. Aboutaleb, Mazen Danaf, Yifei Xie, Moshe Ben-Akiva

This paper discusses capabilities that are essential to models applied in policy analysis settings and the limitations of direct applications of off-the-shelf machine learning methodologies to such settings.

BIG-bench Machine Learning Discrete Choice Models

Learning Structure in Nested Logit Models

1 code implementation18 Aug 2020 Youssef M. Aboutaleb, Moshe Ben-Akiva, Patrick Jaillet

We formulate the problem of learning an optimal nesting structure from the data as a mixed integer nonlinear programming (MINLP) optimization problem and solve it using a variant of the linear outer approximation algorithm.

Sparse Covariance Estimation in Logit Mixture Models

no code implementations14 Jan 2020 Youssef M. Aboutaleb, Mazen Danaf, Yifei Xie, Moshe Ben-Akiva

We propose a new estimator, called MISC, that uses a mixed-integer optimization (MIO) program to find an optimal block diagonal structure specification for the covariance matrix, corresponding to subsets of correlated coefficients, for any desired sparsity level using Markov Chain Monte Carlo (MCMC) posterior draws from the unrestricted full covariance matrix.

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