Search Results for author: Prateek Bansal

Found 15 papers, 4 papers with code

A Data Fusion Approach for Ride-sourcing Demand Estimation: A Discrete Choice Model with Sampling and Endogeneity Corrections

no code implementations5 Dec 2022 Rico Krueger, Michel Bierlaire, Prateek Bansal

In this paper, we present and apply an approach for estimating ride-sourcing demand at a disaggregate level using discrete choice models and multiple data sources.

Discrete Choice Models

A Deep Generative Model for Feasible and Diverse Population Synthesis

no code implementations1 Aug 2022 Eui-Jin Kim, Prateek Bansal

Synthesizing population by directly sampling from HTS ignores the attribute combinations that are unobserved in the HTS samples but exist in the population, called 'sampling zeros'.

Attribute Generative Adversarial Network

DT2I: Dense Text-to-Image Generation from Region Descriptions

no code implementations5 Apr 2022 Stanislav Frolov, Prateek Bansal, Jörn Hees, Andreas Dengel

Our results demonstrate the capability of our approach to generate plausible images of complex scenes using region captions.

Conditional Image Generation Image-text matching +2

Fuel consumption elasticities, rebound effect and feebate effectiveness in the Indian and Chinese new car markets

no code implementations22 Jan 2022 Prateek Bansal, Rubal Dua

Conditional on buying a new car, the fuel consumption in both markets is found to be relatively unresponsive to fuel price and income, with magnitudes of elasticity estimates ranging from 0. 12 to 0. 15.

A General Framework to Forecast the Adoption of Novel Products: A Case of Autonomous Vehicles

no code implementations8 Sep 2021 Subodh Dubey, Ishant Sharma, Sabyasachee Mishra, Oded Cats, Prateek Bansal

The existing behavior models not only fail to capture the information propagation within the individual's social network, but also they do not incorporate the impact of such word-of-mouth (WOM) dissemination on the consumer's risk preferences.

Autonomous Vehicles

Revisiting the empirical fundamental relationship of traffic flow for highways using a causal econometric approach

no code implementations6 Apr 2021 Anupriya, Daniel J. Graham, Daniel Hörcher, Prateek Bansal

The fundamental relationship of traffic flow is empirically estimated by fitting a regression curve to a cloud of observations of traffic variables.

regression

Willingness to Pay and Attitudinal Preferences of Indian Consumers for Electric Vehicles

no code implementations20 Jan 2021 Prateek Bansal, Rajeev Ranjan Kumar, Alok Raj, Subodh Dubey, Daniel J. Graham

Consumer preference elicitation is critical to devise effective policies for the diffusion of electric vehicles (EVs) in India.

Marketing

Revisiting McFadden's correction factor for sampling of alternatives in multinomial logit and mixed multinomial logit models

no code implementations15 Jan 2021 Thijs Dekker, Prateek Bansal

We generalise their result to the case of positive conditioning and show that whilst McFadden (1978)'s correction factor may not minimise the overall expected information divergence, it does minimise the expected information loss with respect to the parameters of interest.

Data Augmentation Methodology Applications

Robust discrete choice models with t-distributed kernel errors

1 code implementation14 Sep 2020 Rico Krueger, Michel Bierlaire, Thomas Gasos, Prateek Bansal

In a case study on transport mode choice behaviour, MNR and Gen-MNR outperform MNP by substantial margins in terms of in-sample fit and out-of-sample predictive accuracy.

Discrete Choice Models

Biogeography-Based Optimization and Support Vector Regression for Freeway Travel Time Prediction and Feature Selection

no code implementations30 Jul 2020 Prateek Bansal

Identification of important predictors reduces dimensions of input data, which not only lessens computational load, but also provides better understanding of underlying relationship between important predictors and travel time.

feature selection regression

Fast Bayesian Estimation of Spatial Count Data Models

no code implementations7 Jul 2020 Prateek Bansal, Rico Krueger, Daniel J. Graham

Spatial count data models are used to explain and predict the frequency of phenomena such as traffic accidents in geographically distinct entities such as census tracts or road segments.

A New Spatial Count Data Model with Bayesian Additive Regression Trees for Accident Hot Spot Identification

1 code implementation24 May 2020 Rico Krueger, Prateek Bansal, Prasad Buddhavarapu

Typically, these methods assume simple linear link function specifications, which, however, limit the predictive power of a model.

Applications

Variational Bayesian Inference for Mixed Logit Models with Unobserved Inter- and Intra-Individual Heterogeneity

1 code implementation1 May 2019 Rico Krueger, Prateek Bansal, Michel Bierlaire, Ricardo A. Daziano, Taha H. Rashidi

Besides, the simulation study demonstrates that a parallelised implementation of the MSL estimator with analytical gradients is a viable alternative to MCMC in terms of both estimation accuracy and computational efficiency, as the MSL estimator is observed to be between 0. 9 and 2. 1 times faster than MCMC.

Methodology Econometrics

Pólygamma Data Augmentation to address Non-conjugacy in the Bayesian Estimation of Mixed Multinomial Logit Models

no code implementations13 Apr 2019 Prateek Bansal, Rico Krueger, Michel Bierlaire, Ricardo A. Daziano, Taha H. Rashidi

The standard Gibbs sampler of Mixed Multinomial Logit (MMNL) models involves sampling from conditional densities of utility parameters using Metropolis-Hastings (MH) algorithm due to unavailability of conjugate prior for logit kernel.

Data Augmentation

Bayesian Estimation of Mixed Multinomial Logit Models: Advances and Simulation-Based Evaluations

2 code implementations7 Apr 2019 Prateek Bansal, Rico Krueger, Michel Bierlaire, Ricardo A. Daziano, Taha H. Rashidi

To address the latter, we conduct an extensive simulation-based evaluation to benchmark the extended VB methods against MCMC and MSLE in terms of estimation times, parameter recovery and predictive accuracy.

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