Search Results for author: Jinhua Zhao

Found 23 papers, 4 papers with code

Renal function changes in chronic hepatitis B patients

no code implementations4 Mar 2024 Jinhua Zhao, Lili Wu, Xiaoan Yang, Zhilaing Gao, Hong Deng

Patients were categorized into stage 1 or stage 2 based on a baseline eGFR of less than 90 ml/min/m^2 Results: 125 CHB patients were matched 1:1 in both the combined treatment and cured groups.

Synergizing Spatial Optimization with Large Language Models for Open-Domain Urban Itinerary Planning

no code implementations11 Feb 2024 Yihong Tang, Zhaokai Wang, Ao Qu, Yihao Yan, Kebing Hou, Dingyi Zhuang, Xiaotong Guo, Jinhua Zhao, Zhan Zhao, Wei Ma

In this paper, we for the first time propose the task of Open-domain Urban Itinerary Planning (OUIP) for citywalk, which directly generates itineraries based on users' requests described in natural language.

Fairness-Enhancing Vehicle Rebalancing in the Ride-hailing System

no code implementations29 Dec 2023 Xiaotong Guo, Hanyong Xu, Dingyi Zhuang, Yunhan Zheng, Jinhua Zhao

The results suggest that our proposed method enhances both accuracy and fairness in forecasting ride-hailing demand, ultimately resulting in more equitable vehicle rebalancing in subsequent operations.

Fairness

MetRoBERTa: Leveraging Traditional Customer Relationship Management Data to Develop a Transit-Topic-Aware Language Model

no code implementations9 Aug 2023 Michael Leong, Awad Abdelhalim, Jude Ha, Dianne Patterson, Gabriel L. Pincus, Anthony B. Harris, Michael Eichler, Jinhua Zhao

Transit riders' feedback provided in ridership surveys, customer relationship management (CRM) channels, and in more recent times, through social media is key for transit agencies to better gauge the efficacy of their services and initiatives.

Language Modelling Large Language Model +2

Fairness-enhancing deep learning for ride-hailing demand prediction

no code implementations10 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.

Fairness

Uncertainty Quantification of Spatiotemporal Travel Demand with Probabilistic Graph Neural Networks

1 code implementation7 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.

Uncertainty Quantification

Predicting Drivers' Route Trajectories in Last-Mile Delivery Using A Pair-wise Attention-based Pointer Neural Network

no code implementations10 Jan 2023 Baichuan Mo, Qing Yi Wang, Xiaotong Guo, Matthias Winkenbach, Jinhua Zhao

To further capture the global efficiency of the route, we propose a new iterative sequence generation algorithm that is used after model training to identify the first stop of a route that yields the lowest operational cost.

Computer Vision for Transit Travel Time Prediction: An End-to-End Framework Using Roadside Urban Imagery

no code implementations22 Nov 2022 Awad Abdelhalim, Jinhua Zhao

We propose and evaluate an end-to-end framework integrating traditional transit data sources with a roadside camera for automated roadside image data acquisition, labeling, and model training to predict transit travel times across a segment of interest.

Travel Time Estimation

The Braess Paradox in Dynamic Traffic

no code implementations7 Mar 2022 Dingyi Zhuang, Yuzhu Huang, Vindula Jayawardana, Jinhua Zhao, Dajiang Suo, Cathy Wu

The Braess's Paradox (BP) is the observation that adding one or more roads to the existing road network will counter-intuitively increase traffic congestion and slow down the overall traffic flow.

Preparing urban mobility for the future of work

no code implementations4 Jan 2022 Nicholas S. Caros, Jinhua Zhao

A gradual growth in flexible work over many decades has been suddenly and dramatically accelerated by the COVID-19 pandemic.

Equality of opportunity in travel behavior prediction with deep neural networks and discrete choice models

1 code implementation25 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.

Discrete Choice Models Fairness

Comparing hundreds of machine learning classifiers and discrete choice models in predicting travel behavior: an empirical benchmark

no code implementations1 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.

Computational Efficiency Discrete Choice Models +1

Individual Mobility Prediction: An Interpretable Activity-based Hidden Markov Approach

no code implementations11 Jan 2021 Baichuan Mo, Zhan Zhao, Haris N. Koutsopoulos, Jinhua Zhao

Individual mobility is driven by demand for activities with diverse spatiotemporal patterns, but existing methods for mobility prediction often overlook the underlying activity patterns.

Theory-based residual neural networks: A synergy of discrete choice models and deep neural networks

no code implementations22 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.

Discrete Choice Models

Deep Neural Networks for Choice Analysis: Architectural Design with Alternative-Specific Utility Functions

no code implementations16 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.

Estimating the potential for shared autonomous scooters

2 code implementations9 Sep 2019 Dániel Kondor, Xiaohu Zhang, Malika Meghjani, Paolo Santi, Jinhua Zhao, Carlo Ratti

Recent technological developments have shown significant potential for transforming urban mobility.

Computers and Society

Multitask Learning Deep Neural Networks to Combine Revealed and Stated Preference Data

no code implementations2 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.

Autonomous Vehicles

Deep Neural Networks for Choice Analysis: Extracting Complete Economic Information for Interpretation

no code implementations11 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.

Discrete Choice Models

A novel method for predicting and mapping the presence of sun glare using Google Street View

no code implementations5 Aug 2018 Xiaojiang Li, Bill Yang Cai, Waishan Qiu, Jinhua Zhao, Carlo Ratti

GSV images have view sight similar to drivers, which would make GSV images suitable for estimating the visibility of sun glare to drivers.

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