1 code implementation • 23 Apr 2024 • Siqi Feng, Rui Yao, Stephane Hess, Ricardo A. Daziano, Timothy Brathwaite, Joan Walker, Shenhao Wang
Moreover, the proposed framework is applicable to other NN-based choice models such as TasteNets.
1 code implementation • 10 Sep 2023 • Xiaowei Gao, Xinke Jiang, Dingyi Zhuang, Huanfa Chen, Shenhao Wang, James Haworth
This model strategically employs a compound model from the Tweedie family, as a Poisson distribution to model risk frequency and a Gamma distribution to account for incident severity.
no code implementations • 10 May 2023 • Zepu Wang, Dingyi Zhuang, Yankai Li, Jinhua Zhao, Peng Sun, Shenhao Wang, Yulin Hu
Traffic data serves as a fundamental component in both research and applications within intelligent transportation systems.
no code implementations • 10 Mar 2023 • Yunhan Zheng, Qingyi Wang, Dingyi Zhuang, Shenhao Wang, Jinhua Zhao
When coupled with the bias mitigation regularization method, the de-biasing SA-Net effectively bridges the mean percentage prediction error gap between the disadvantaged and privileged groups, and also protects the disadvantaged regions against systematic underestimation of TNC demand.
no code implementations • 7 Mar 2023 • Qingyi Wang, Shenhao Wang, Yunhan Zheng, Hongzhou Lin, Xiaohu Zhang, Jinhua Zhao, Joan Walker
The latent space in deep hybrid models can be interpreted, because it reveals meaningful spatial and social patterns.
1 code implementation • 7 Mar 2023 • Qingyi Wang, Shenhao Wang, Dingyi Zhuang, Haris Koutsopoulos, Jinhua Zhao
This Prob-GNN framework is substantiated by deterministic and probabilistic assumptions, and empirically applied to the task of predicting the transit and ridesharing demand in Chicago.
1 code implementation • 11 Aug 2022 • Dingyi Zhuang, Shenhao Wang, Haris N. Koutsopoulos, Jinhua Zhao
Recently, spatial-temporal deep learning models demonstrate the tremendous potential to enhance prediction accuracy.
1 code implementation • 25 Sep 2021 • Yunhan Zheng, Shenhao Wang, Jinhua Zhao
Although researchers increasingly adopt machine learning to model travel behavior, they predominantly focus on prediction accuracy, ignoring the ethical challenges embedded in machine learning algorithms.
no code implementations • 29 May 2021 • Da Zhang, Qingyi Wang, Shaojie Song, Simiao Chen, MingWei Li, Lu Shen, Siqi Zheng, Bofeng Cai, Shenhao Wang
Applications of the framework with Chinese data reveal highly heterogeneous health benefits of reducing fossil fuel use in different sectors and regions in China with a mean of \$34/tCO2 and a standard deviation of \$84/tCO2.
no code implementations • 1 Feb 2021 • Shenhao Wang, Baichuan Mo, Stephane Hess, Jinhua Zhao
The relative ranking of the ML and DCM classifiers is highly stable, while the absolute values of the prediction accuracy and computational time have large variations.
no code implementations • 22 Oct 2020 • Shenhao Wang, Baichuan Mo, Jinhua Zhao
However, the two methods are highly complementary because data-driven methods are more predictive but less interpretable and robust, while theory-driven methods are more interpretable and robust but less predictive.
no code implementations • 16 Sep 2019 • Shenhao Wang, Baichuan Mo, Jinhua Zhao
Overall, this study demonstrates that prior behavioral knowledge could be used to guide the architecture design of DNN, to function as an effective domain-knowledge-based regularization method, and to improve both the interpretability and predictive power of DNN in choice analysis.
no code implementations • 2 Jan 2019 • Shenhao Wang, Qingyi Wang, Jinhua Zhao
This study presents a framework of multitask learning deep neural networks (MTLDNNs) for this question, and demonstrates that MTLDNNs are more generic than the traditional nested logit (NL) method, due to its capacity of automatic feature learning and soft constraints.
no code implementations • 11 Dec 2018 • Shenhao Wang, Qingyi Wang, Jinhua Zhao
To demonstrate the strength and challenges of DNNs, we estimated the DNNs using a stated preference survey, extracted the full list of economic information from the DNNs, and compared them with those from the DCMs.