A full list of my publications can also be found on my Google Scholar profile.
Published:
Preprint, under review. Read more
Recommended citation: Wang, G., Niu, H., Zhu, D., Hu, J., Zhan, X., and Zhou, G. A Versatile and Efficient Reinforcement Learning Framework for Autonomous Driving. NeurIPS 2022 Reinforcement Learning for Real Life (RL4RealLife) Workshop.
Published:
Preprint, under review. Read more
Recommended citation: Xu, H., Zhan, X., Li, J., and Yin, H. Offline Reinforcement Learning with Soft Behavior Regularization. NeurIPS 2021 Offline RL Workshop.
Published:
11th International Conference on Learning Representations (ICLR 2023). Read more
Recommended citation: Li, J., Hu, X., Xu, H., Liu, J., Zhan, X., Jia, Q., and Zhang, Y. Q. Mind the Gap: Offline Policy Optimization for Imperfect Rewards. In 11th International Conference on Learning Representations (ICLR 2023).
Published:
11th International Conference on Learning Representations (ICLR 2023). Read more
Recommended citation: Xu, H., Jiang, L., Li, J., Yang, Z., Wang, Z., Chan, V., W., K., and Zhan, X.. Offline RL with No OOD Actions: In-Sample Learning via Implicit Value Regularization. In 11th International Conference on Learning Representations (ICLR 2023) (oral).
Published:
11th International Conference on Learning Representations (ICLR 2023). Read more
Recommended citation: Li, J., Zhan, X., Xu, H., Zhu, X., Liu, J., and Zhang, Y. Q. When Data Geometry Meets Deep Function: Generalizing Offline Reinforcement Learning. In 11th International Conference on Learning Representations (ICLR 2023).
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IEEE International Conference on Communications (ICC 2023). Read more
Recommended citation: Jiang, L., Wang, X., Yang, A., Wang, X., Jin, X., Wang, W., Ye, X., Ouyang, Y., and Zhan, X.. An Efficient Multi-Agent Optimization Approach for Coordinated Massive MIMO Beamforming. In IEEE International Conference on Communications (ICC 2023).
Published:
International Conference on Autonomous Agents and Multiagent Systems 2023 (AAMAS 2023). Read more
Recommended citation: Wang, X., and Zhan, X.. Offline Multi-Agent Reinforcement Learning with Coupled Value Factorization. In International Conference on Autonomous Agents and Multiagent Systems 2023 (AAMAS 2023) (Extended Abstract).
Published:
Thirty-sixth Conference on Neural Information Processing Systems (NeurIPS 2022). Read more
Recommended citation: Xu, H., Li, J., Li, J., Zhan, X.. A Policy-Guided Imitation Approach for Offline Reinforcement Learning. In Thirty-sixth Conference on Neural Information Processing Systems (NeurIPS 2022) (oral).
Published:
Thirty-sixth Conference on Neural Information Processing Systems (NeurIPS 2022). Read more
Recommended citation: Niu, H., Sharma, S., Qiu, Y., Li, M, Zhou G., Hu, J., Zhan, X.. When to Trust Your Simulator: Dynamics-Aware Hybrid Offline-and-Online Reinforcement Learning. In Thirty-sixth Conference on Neural Information Processing Systems (NeurIPS 2022).
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Conference on Robot Learning (CoRL 2022). Read more
Recommended citation: Zhang, W., Xu, H., Niu, H., Cheng, P, Li, M., Zhang, H., Zhou G., Zhan, X.. Discriminator-Guided Model-Based Offline Imitation Learning. In Conference on Robot Learning (CoRL 2022).
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IEEE VIS 2022. Read more
Recommended citation: Liu, S., Weng, D., Tian, Y., Deng, Z., Xu, H., Zhu, X., Yin, H., Zhan, X., Wu, Y. ECoalVis: Visual Analysis of Control Strategies in Coal-fired Power Plants. In IEEE Visualization Conference (VIS 2022).
Published:
Accepted in the 17th European Conference on Computer Vision (ECCV 2022). Read more
Recommended citation: Yu, Q., Lou, J., Zhan, X., Li, Q., Liu, J., Zuo W. and Liu, Y. Adversarial Contrastive Learning via Asymmetric InfoNCE. In 17th European Conference on Computer Vision (ECCV 2022).
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39th International Conference on Machine Learning (ICML 2022). Read more
Recommended citation: Xu, H., Zhan, X., Yin, H. and Qin, H. Discriminator-Weighted Offline Imitation Learning from Suboptimal Demonstrations. In 39th International Conference on Machine Learning (ICML 2022).
Published:
In IJCAI-22. Read more
Recommended citation: Zhan, X., Zhu, X. and Xu, H. Model-Based Offline Planning with Trajectory Pruning. In 31st International Joint Conference on Artificial Intelligence (IJCAI-22), 3695-3701.
Published:
Thirty-Sixth AAAI Conference on Artificial Intelligence (AAAI2022). Read more
Recommended citation: Zhan, X., Xu, H., Zhang, Y., Zhu, X. and Yin, H. DeepThermal: Combustion Optimization for Thermal Power Generating Units Using Offline Reinforcement Learning. In Thirty-Sixth AAAI Conference on Artificial Intelligence (AAAI2022).
Published:
Thirty-Sixth AAAI Conference on Artificial Intelligence (AAAI2022). Read more
Recommended citation: Xu, H., Zhan, X., and Zhu, X. Constraints Penalized Q-Learning for Safe Offline Reinforcement Learning. In Thirty-Sixth AAAI Conference on Artificial Intelligence (AAAI2022).
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Published in SIGKDD 2021 (KDD2021). Read more
Recommended citation: Qin, H., Zhan, X., Li, Y., Yang, X. and Zheng, Y. Network-Wide Traffic States Imputation Using Self-interested Coalitional Learning. In Proceedings of the 27th ACM SIGKDD Conference on Knowledge Discovery and Data Mining (KDD ’21), August 14–18, 2021, Virtual Event, Singapore. ACM, New York, NY, USA. https://doi.org/10.1145/3447548.3467424.
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Published in Thirty-Fifth AAAI Conference on Artificial Intelligence (AAAI2021). Read more
Recommended citation: Qin, H., Ke, S., Yang, X., Xu, H., Zhan, X. and Zheng, Y. Robust Spatio-Temporal Purchase Prediction via Deep Meta Learning. In Proceedings of the AAAI Conference on Artificial Intelligence 35 (5), 4312-4319, 2021.
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Published in World Environmental and Water Resources Congress 2017, 2017. Read more
Recommended citation: Zischg, J., Klinkhamer, C., Zhan, X., Krueger, E., Ukkusuri, S., Rao, P. S. C., Rauch, W. and Sitzenfrei, R. Evolution of Complex Network Topologies in Urban Water Infrastructure. In World Environmental and Water Resources Congress, Sacramento, May 2017.
Published:
Published in Proceedings of 96nd Transportation Research Board Meeting, 2017. Read more
Recommended citation: Yang, C., Zhang, Y., Zhan, X., Ukkusuri, S. V., and Qiu, W. Activity Chain Inference Using Travel Survey and Mobile Phone data. In Proceedings of Transportation Research Board Meeting, Washington D.C., January 2017.
Published:
Published in Proceedings of 94nd Transportation Research Board Meeting, 2015. Read more
Recommended citation: Zhan, X., Ukkusuri, S. V. A Probabilistic Urban Link Travel Time Estimation Model Using Large-scale Taxi Trip Data. In Proceedings of 94th Transportation Research Board Meeting, Washington D.C., January 2015.
Published:
Published in Proceedings of the 3rd ACM SIGKDD International Workshop on Urban Computing, 2014. Read more
Recommended citation: Zhan, X., Qian, X., Ukkusuri, S. V. Measuring the Efficiency of Urban Taxi Service System. In Proceedings of the 3rd ACM SIGKDD International Workshop on Urban Computing, New York, August 2014.
Published:
Published in 5th International Symposium on Dynamic Traffic Assignment, 2014. Read more
Recommended citation: Zhan, X., Ukkusuri, S. V.. Multi-User Class, Simultaneous Route and Departure Time Choice Dynamic Traffic Assignment with an Embedded Spatial Queuing Model. 5th International Symposium on Dynamic Traffic Assignment. Salerno, Italy, June, 2014.
Published:
Published in Proceedings of 93nd Transportation Research Board Meeting, 2014. Read more
Recommended citation: Qian, X., Zhan, X., Ukkusuri, S. Characterizing Urban Dynamics Using Large Scale Taxicab Data. In Proceedings of 93nd Transportation Research Board Meeting, Washington D.C., January 2014.
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Published in Proceedings of the 2nd ACM SIGKDD International Workshop on Urban Computing, 2013. Read more
Recommended citation: Hasan, S., Zhan, X., and Ukkusuri, S. V. Understanding Urban Human Activity and Mobility Patterns Using Large-scale Location-based Data from Online Social Media. Proceedings of the 2nd ACM SIGKDD International Workshop on Urban Computing, August, 2013.
Published:
In IEEE Transactions on Games. Read more
Recommended citation: Feng, X., Jiang, L., Yu, X., Xu, H., Sun, X., Wang, J., Zhan, X. and Chan, W. K., 2023. Curriculum Goal-Conditioned Imitation for Offline Reinforcement Learning. In IEEE Transactions on Games.
Published:
In IEEE Transactions on Knowledge and Data Engineering (TKDE). Read more
Recommended citation: Qin, H., Zhan, X., and Zheng, Y., 2022. CSCAD: Correlation Structure-based Collective Anomaly Detection in Complex System. In IEEE Transactions on Knowledge and Data Engineering (TKDE).
Published:
Published in Journal of Advanced Transportation, 2020. Read more
Recommended citation: Yang, C., Zhang, Y., Zhan, X., Ukkusuri, S. V. and Chen, Y., 2020. Fusing Mobile Phone and Travel Survey Data to Model Urban Activity Dynamics. Journal of Advanced Transportation, 2020, 5321385.
Published:
Published in Transportation Research Part C: Emerging Technologies, 2020. Read more
Recommended citation: Zhan, X., Li, R., and Ukkusuri, S. V., 2020. Link-based traffic state estimation and prediction for arterial networks using license-plate recognition data. Transportation Research Part C: Emerging Technologies, 117, 102660.
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Published in Journal of Urban Planning and Development, 2019. Read more
Recommended citation: Zhan, X., and Ukkusuri, S. V., 2019. Spatial Dependency of Urban Sprawl and the Underlying Road Network Structure. Journal of Urban Planning and Development, 145(4), 04019014.
Published:
Published in Complexity, 2019. Read more
Recommended citation: Zischg, J., Klinkhamer, C., Zhan, X., Rao, S. C., and Sitzenfrei, R., 2019. A Century of Topological Co-Evolution of Complex Infrastructure Networks in an Alpine City. Complexity, 2019, 2096749.
Published:
Published in Journal of Computing in Civil Engineering, 2018. Read more
Recommended citation: Gehlot, H., Zhan, X., Qian, X., Thompson, C., Kulkarni, M. and Ukkusuri, S. V., 2018. A-Rescue 2.0: A High Fidelity, Parallel, Agent-based Evacuation Simulator. Journal of Computing in Civil Engineering, 33(2), 04018059.
Published:
Published in Physical Review E, 2017. Read more
Recommended citation: Zhan, X., Ukkusuri, S. V., and Rao, S. C., 2017. Dynamics of Functional Failures and Recovery in Complex Road Networks. Physical Review E, 96(5), 052301.
Published:
Published in IET Intelligent Transport Systems, 2017. Read more
Recommended citation: Li, R. Ye, Z., Li. B. and Zhan, X., 2017. Simulation of Hard Shoulder Running Combined with Queue Warning During Traffic Accident with CTM model. IET Intelligent Transport Systems, 11(9), 553-560.
Published:
Published in Transportation Research Part C: Emerging Technology, 2017. Read more
Recommended citation: Mo, B., Li, R., Zhan, X., 2017. Speed Profile Estimation Using License Plate Recognition Data. Transportation Research Part C: Emerging Technology, 82, 358–378.
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Published in Transportmetrica B: Transport Dynamics, 2017. Read more
Recommended citation: Zhan, X., and Ukkusuri, S. V., 2019. Multiclass, Simultaneous Route and Departure Time Choice Dynamic Traffic Assignment with an Embedded Spatial Queuing Model. Transportmetrica B: Transport Dynamics, 7:1, 124-146.
Published:
Published in Physical Review E, 2017. Read more
Recommended citation: Kreuger, E., Klinkhamer, C., Urich C., Zhan, X., and Rao, S. C., 2017. Generic Patterns in the Evolution of Urban Water Networks: Evidence from a Large Asian City. Physical Review E, 95(3), 032312.
Published:
Published in IEEE Transactions on Knowledge and Data Engineering (TKDE), 2016. Read more
Recommended citation: Zhan, X., Zheng, Y., Yi, X., and Ukkusuri, S. V., 2016. Citywide Traffic Volume Estimation Using Trajectory Data. IEEE Transactions on Knowledge and Data Engineering (TKDE), 29(2), 272-285.
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Published in Network and Spatial Economics, 2016. Read more
Recommended citation: Aziz, H. M., Ukkusuri, S., Zhan, X., 2016. Determining the Impact of Personal Mobility Carbon Allowance Schemes in Transportation Networks. Network and Spatial Economics, 17(2), 505-545.
Published:
Published in Network and Spatial Economics, 2016. Read more
Recommended citation: Ukkusuri, S., Hasan, S., Doan, K., Luong, B., Zhan, X., Murray-Tuite, P., Yin, W., 2016. A-RESCUE: An Agent-based Regional Evacuation Simulator Coupled with User Enriched Behavior. Network and Spatial Economics, 17(1), 197-223.
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Published in Frontiers in ICT, 2016. Read more
Recommended citation: Hasan, S., Ukkusuri, S., Zhan, X., 2016. Understanding Social Influence in Activity-Location Choice and Life-Style Patterns Using Geo-location Data from Social Media. Frontiers in ICT, 3:10.
Published:
Published in IEEE Transactions on Intelligent Transportation Systems, 2016. Read more
Recommended citation: Zhan, X., Qian, X., Ukkusuri, S. V., 2016. A Graph Based Approach to Measure the Efficiency of Urban Taxi Service System. IEEE Transactions on Intelligent Transportation Systems, 17(9), 2479-2489.
Published:
Automation in Construction, 2015. Read more
Recommended citation: Zhan, X., Ukkusuri, S., V., Yang, C., 2016. A Bayesian Mixture Model for Short-term Average Link Travel Time Estimation Using Large-scale Limited Information Trip-based Data. Automation in Construction, 72(3), 237-246.
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Journal of Transportation Safety & Security, 2015. Read more
Recommended citation: Mesa-Arango, R., Zhan, X., Ukkusuri, S. V., Mitra, A., 2016. Direct Transportation Economic Impacts of Highway Networks Disruptions Using Public Data from United States. Journal of Transportation Safety & Security, 8(1), 36-55.
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Analytic Methods in Accident Research, 2015. Read more
Recommended citation: Zhan, X., Aziz, H. M., Ukkusuri, S. V., 2015. An Efficient Parallel Sampling Technique for Multivariate Poisson-Lognormal Model: Analysis with Two Crash Count Datasets. Analytic Methods in Accident Research, 8, 45-60.
Published:
Published in Transportation Research Part C: Emerging Technologies, 2015. Read more
Recommended citation: Zhan, X., Li, R., Ukkusuri, S. V., 2015. Lane-based Real Time Queue Length Estimation Using License Plate Recognition Data. Transportation Research Part C: Emerging Technology, 57, 85-102.
Published:
Published in Network and Spatial Economics, 2014. Read more
Recommended citation: Zhan, X., Ukkusuri, S., V., Zhu, F., 2014. Inferring Urban Land Use Using Large-Scale Social Media Check-in Data. Network and Spatial Economics, 14, 647-667.
Published:
Published in Transportation Research Record, 2014. Read more
Recommended citation: Ukkusuri, S., Zhan, X., Sadri A., Ye, Q., 2013. Exploring Crisis Informatics Using Social Media Data: A Study on 2013 Oklahoma Tornado. Transportation Research Record, 2459, 110-118.
Published:
Published in Transportation Research Part C: Emerging Technologies, 2013. Read more
Recommended citation: Zhan, X., Hasan, S., Ukkusuri, S. V., Kamga, C., 2013. Urban Link Travel Time Estimation Using Large-scale Taxi Data with Partial Information. Transportation Research Part C: Emerging Technologies, 33, 37-49.
Published:
Published in Engineering and Applied Sciences Optimization, 2015. Read more
Recommended citation: Qian, X, Zhan, X., Ukkusuri, S. V. Characterizing Urban Dynamics Using Large Scale Taxicab Data. Engineering and Applied Sciences Optimization: Vol. 38, 17-32, Springer International Publishing, 2015.
Published:
Published in Best Practices for Transportation Agency Use of Social Media Data, 2014. Read more
Recommended citation: Ukkusuri, S. V., Hasan, S., and Zhan, X.. Checking the Urban Pulse: Social Media Data Analytics for Transportation Applications. Best Practices for Transportation Agency Use of Social Media Data. Taylor and Francis/CRC Press, 2013.