George Mohler
Daniel J. Fitzgerald Professor
Department of Computer Science
Boston College
Contact: mohlerg [AT] bc [DOT] edu
My research focuses on statistical and deep learning approaches to solving problems in spatial, urban and network data science. Several current projects include modeling and causal inference for overdose and social harm event data, fairness and interpretability in criminal justice forecasting, and modeling viral processes and link formation on social networks.
Education
Ph.D. in Mathematics
University of California Santa Barbara
2008
M.A. in Mathematics
University of California Santa Barbara
2005
B.S. in Mathematics (Highest Distinction)
Indiana University Bloomington
2003
Academic Employment
Daniel J. Fitzgerald Professor
Boston College
Department of Computer Science
2022-present
Professor
Indiana University - Purdue University Indianapolis
Department of Computer and Information Science
2021-2022
Director
Indiana University - Purdue University Indianapolis
Institute for Mathematical Modeling and Computational Science
2019-2022
Associate Professor
Indiana University - Purdue University Indianapolis
Department of Computer and Information Science
2016-2021
Assistant Professor
Santa Clara University
Department of Mathematics and Computer Science
2010-2016
CAM Assistant Adjunct Professor
University of California, Los Angeles
Department of Mathematics
2008-2010
Postdoctoral Fellows
Youness Diouane
Alex Knorre
Graduate Students
Ritika Pandey (PhD, expected 2023)
Xueying Liu, PhD IUPUI 2022 (Postdoc at St Jude)
Wen-Hao Chiang, PhD IUPUI 2022 (Amazon)
Samira Khorshidi, PhD IUPUI 2022 (Apple)
Hao Sha, PhD IUPUI 2021 (Career Builder)
Bo Peng, MS IUPUI 2019 (PhD student at Ohio State)
Raghavendran Vijayan, MS IUPUI 2018 (Palo Alto Networks)
Professional Service
Associate Editor, Journal of Quantitative Criminology, 2022-present
Associate Editor, International Journal of Forecasting, 2020-present
Member, ASA committee on law and justice statistics, 2023-present
Workshop Co-Chair, CIKM 2022
Program Co-Chair, SocialSens 2021
General Chair, IEEE Big Data Workshop on Data Science for Smart and Connected Communities 2020
Program Committee Chair, IEEE BigData Special Symposium: NSF REU Research in Data Science, Systems, and Security 2018, 2019
Grants and Awards
AFOSR MURI grant FA9550-22-1-0380, Learning Dynamics and Detecting Causal Pathways in Coupled Online-Offline Systems, $1,212,914 (Boston College portion). Joint w/ J. Brantingham, E. Hartman, H. Lu, F. Mortstatter, and N. Rodriguez.
NSF grant SCC-2125319, SCC-IRG Track 2: Independent Real-Time Sensing Data to Support Community Well-Being,
$1,422,463. 2021-2024. Joint w/ J. Brantingham (PI), E. Hartman and J. Hill.
CDC grant R01CE003362, Examining the iatrogenic effect of law enforcement disruptions to the illicit drug market on overdose in the surrounding community, $1,087,500. 9/2021-8/2024. Joint w/ Brad Ray (PI), Jennifer Carroll, Erin Comartin, Steven Korzeniewski, Grant Victor and Brandon del Pozo.
NSF grant ATD-2124313, ATD: Collaborative Research: Multi-task, Multi-Scale Point Processes for Modeling Infectious Disease Threats, $149,992. 2021-2024.
NIJ Recidivism forecasting challenge, 1st, 3rd and 2nd place in three reducing bias categories of the competition. Joint w/ M. Porter (team PASDA), $30,000. 2021.
IUPUI AI Institute Seed Grant, Leveraging Artificial Intelligence and Machine Learning to Reduce Disparities in Suicide Trajectories: A BioPsychosocial Approach to Identify Modifiable Risk and Protective Processes. Joint w/ Y. Xiao, J. Carlson, and S. Fang, $25,000. 2021-2022.
IU Racial Justice Research Fund, High-stakes pairing systems for mitigating police bias and misconduct. Joint w/ J. Carter and J. Hill. $14,915. 2020-2021.
NIJ grant 2019-R2-CX-0004, The Impact of Gunshot Detection Technology on Gun Violence in Kansas City and Chicago: A Multi-Pronged Synthetic Control Evaluation. Joint w/ E. Piza (PI) and J. Carter, $503,305. 2020-2021.
NSF grant SCC-1737585, SCC-IRG Track 2: Real-Time Algorithms and Software Systems for Heterogeneous Data Driven Policing of Social Harm, joint with J. Carter and R. Raje, $791,513. 9/2017- 8/2020.
NSF grant ATD-1737996, ATD: Collaborative Research: Point Process Algorithms for Threat Detection from Heterogeneous Human Mobility and Activity Data, $100,000. 9/2017- 8/2020.
NSF grant REU-1659488, REU Site: Data Science of Risk and Human Activity, joint with co-PI M. al Hasan, $287,377. 3/2017- 2/2020.
NIJ Real-time crime forecasting challenge. First place in nine categories of large business division. Joint w/ M. Porter, $135,000. 2017.
NSF grant SES-1343123, INSPIRE: Computational modeling of grievances and political instability through global media, joint with LaFree (PI), Cunningham, Golbeck, and Torrens, $2,594,533. 9/2014- 8/2017.
NSF grant DMS-0968309, FRG: Collaborative Research: Mathematics of large scale urban crime, joint with A. Bertozzi (PI), G. Tita, J. Brantingham, M. Short, L. Chayes, and F. Schoenberg, $1,008,105. 9/2010-8/2013.
Publications and Preprints
2023
[75] Ray, B., Mohler, G., Korzeniewski, S., Carroll, J., del Pozo, B., Victor, G., Hedden, B., and Hyun, P. Spatiotemporal analysis exploring the effect of law enforcement drug market disruptions on overdose. To appear in the American Journal of Public Health.
[74] R. Pandey, J. Carter, J. Hill and G. Mohler. Rewiring police officer training networks to reduce forecasted use of force. Proceedings of 29th ACM SIGKDD Conference on Knowledge Discovery and Data Mining, (KDD 2023).
[73] X. Miscouridou, S. Bhatt, G. Mohler, S. Flaxman, and S. Mishra. Cox-Hawkes: doubly stochastic spatiotemporal Poisson processes. Transactions on Machine Learning Research (2023).
[72] G. Mohler and J. Mateu. Second order preserving point process permutations. Stat (2023).
[71] Badirli, S., Picard, C. J., Mohler, G., Richert, F., Akata, Z., and Dundar, M. Classifying the unknown: Insect identification with deep hierarchical Bayesian learning. Methods in Ecology and Evolution (2023).
[70] Piza, E. L., Hatten, D. N., Carter, J. G., Baughman, J. H., and Mohler, G. Gunshot Detection Technology Time Savings and Spatial Precision: An Exploratory Analysis in Kansas City. Policing (2023).
2022
[69] MacDonald, J., Mohler, G. and Brantingham, P.J. Association between race, shooting hot spots, and the surge in gun violence during the COVID-19 pandemic in Philadelphia, New York and Los Angeles. Preventive Medicine (2022).
[68] M. B. Short and G. Mohler. A fully Bayesian, logistic regression tracking algorithm for mitigating disparate misclassfication. International Journal of Forecasting (2022).
[67] Wen-Hao Chiang, X. Liu, and G. Mohler. Hawkes process modeling of COVID-19 with mobility leading indicators and spatial covariates. International Journal of Forecasting (2022).
[66] B. Chen, P. Shrestha, A. L. Bertozzi, G. Mohler, and F. Schoenberg, A Novel Point Process Model for COVID-19: Multivariate Recursive Hawkes Process, in Predicting Pandemics in a Globally Connected World, Birkhauser-Springer, eds. Nicola Bellomo and Mark A.J. Chaplain (2022).
[65] W. Chiang and G. Mohler. Hawkes process multi-armed bandits for search and rescue. IEEE International Conference on Machine Learning and Applications, ICMLA 2022.
[64] S. Khorshidi, B. Wang, and G. Mohler. Adversarial attacks on deep temporal point processes. IEEE International Conference on Machine Learning and Applications, ICMLA 2022.
[63] X. Liu, S. Fang, G. Mohler, J. Carlson and Y. Xiao. Time to event modeling of subreddit transitions to r/SuicideWatch. IEEE International Conference on Machine Learning and Applications, ICMLA 2022.
[62] D. Sledge, H. F. Thomas, B. L. Hoang, and G. Mohler. Impact of Medicaid, Race/Ethnicity, and Criminal Justice Referral on Opioid Use Disorder Treatment. Journal of the American Academy of Psychiatry and the Law. (2022). DOI: 10.29158/JAAPL.210137-21
[61] Brantingham, P. Jeffrey, George Mohler, and John MacDonald. Changes in Public-Police Cooperation Following the Murder of George Floyd. PNAS Nexus (2022).
2021
[60] G. Mohler and M. Porter. A note on the multiplicative fairness score in the NIJ recidivism forecasting challenge. Crime Science 10.1 (2021): 1-5.
[59] S. Badirli, Z. Akata, G. Mohler, C. Picard, M. Dundar. Fine-Grained Zero-Shot Learning with DNA as Side Information. Conference on Neural Information Processing Systems, NeurIPS 2021.
[58] H. Sha, M. Al Hasan, and G. Mohler. Source detection on networks using spatial temporal graph convolutional networks. IEEE International Conference on Data Science and Advanced Analytics, DSAA 2021.
[57] G. Mohler, S. Mishra, B. Ray, L. Magee, P. Huynh, M. Canada, D. O'Donnell, and S. Flaxman. A modified two-process Knox test for investigating the relationship between law enforcement opioid seizures and overdoses. Proceedings of the Royal Society A 477.2250 (2021): 20210195.
[56] H. Sha, M. Al Hasan, and G. Mohler. Group link prediction Using Convolutional Variational Autoencoder. AAAI Conference on Weblogs and Social Media, ICWSM 2021.
[55] S. Khorshidi, J. Carter, G. Mohler, and G. Tita. Explaining crime diversity with Google street view. Journal of Quantitative Criminology.
[54] P. J. Brantingham, G. Tita, and G. Mohler. Gang-related crime in Los Angeles remained stable following COVID-19 social distancing orders. Criminology and Public Policy.
[53] H. Sha, M. Al Hasan, G. Mohler. Learning Network Event Sequences Using Long Short-term Memory and Second-order Statistic Loss. Statistical Analysis and Data Mining.
[52] X. Liu, J. Carter, B. Ray, and G. Mohler. Point process modeling of drug overdoses with heterogeneous and missing data. Annals of Applied Statistics.
[51] G. Mohler, M.B. Short, F. Schoenberg and D. Sledge. Analyzing the Impacts of Public Policy on COVID-19 Transmission: A Case Study of the Role of Model and Dataset Selection Using Data from Indiana. Statistics and Public Policy.
[50] J. Carter, G. Mohler, R. Raje, N. Chowdhury, and S. Pandey. The Indianapolis Harmspot Policing Experiment. Journal of Criminal Justice.
2020
[49] N. Glober, G. Mohler, P. Huynh, T. Arkins, D. O'Donnell, J. Carter and B. Ray. Impact of COVID-19 Pandemic on Drug Overdoses in Indianapolis. Journal of Urban Health.
[48] S. Khorshidi, J. Carter, and G. Mohler. Repurposing recidivism models for forecasting police officer use of force. IEEE Big Data Workshop on Smart and Connected Communities.
[47] H. Sha, M. Al Hasan, J. Carter and G. Mohler. Interpretable Hawkes Process Spatial Crime Forecasting with TV-Regularization. IEEE Big Data Workshop on Smart and Connected Communities.
[46] J. Wong, H. Sha, M. Al Hasan, G. Mohler, S. Becker, and C. Wiltse. Automated Corn Ear Height Prediction Using Video-Based Deep Learning. IEEE BigData Workshop on Smart Farming, Precision Agriculture, and Supply Chain.
[45] R. Pandey, P.J. Brantingham, C. Uchida, and G. Mohler. Building knowledge graphs of homicide investigation chronologies. International Workshop on Mining and Learning in the Legal Domain (MLLD-2020).
[44] G. Mohler, E. McGrath, C. Buntain, and G. LaFree. Hawkes binomial topic model with applications to coupled conflict-Twitter data. Annals of Applied Statistics.
[43] Andrea L Bertozzi, Elisa Franco, George Mohler, Martin B Short, Daniel Sledge. The challenges of modeling and forecasting the spread of COVID-19, Proceedings of the National Academy of Sciences, 117 (29), 16732-16738.
[42] H. Sha, M. Al Hasan, P.J. Brantingham, and G. Mohler. (2020). Dynamic topic modeling of the COVID-19 Twitter narrative among U.S. governors and cabinet executives. 5th International Workshop on Social Sensing (SocialSens 2020).
[41] Mohler, G., Bertozzi, A., Carter, J.G., Short, M.B., Sledge, D., Tita, G., Uchida, C. and Brantingham, P.J. (2020). Impact of social distancing during COVID-19 pandemic on crime in Los Angeles and Indianapolis. Journal of Criminal Justice. 68, 2020.
[40] K. Gray, D. Smolyak, S. Badirli, and G. Mohler. Coupled IGMM-GANs for deep multimodal anomaly detection in human mobility data. ACM Transactions on Spatial Algorithms and Systems. 6 (4), 1-14.
[39] G. Mohler, M. Porter, J.G. Carter and G. LaFree. Learning to rank spatio-temporal hotspots (journal version). Crime Science. 9 (1), 1-12.
2019
[38] W. Chiang, B. Yuan, H. Li, B. Wang, A. Bertozzi, J. Carter, B. Ray, and G. Mohler. System for Overdose Spike Early Warning using Drug Mover’s Distance-based Hawkes Processes. ECML-PKDD Workshop on Data Science for Social Good. 2019.
[37] G. Mohler, P.J. Brantingham, J. Carter and M.B. Short. Reducing bias in estimates for the law of crime concentration. Journal of Quantitative Criminology (2019), DOI: 10.1007/s10940-019-09404-1.
[36] Stanhope, A., Sha, H., Barman, D., Al Hasan, M., & Mohler, G. Group Link Prediction. In 2019 IEEE International Conference on Big Data (Big Data) (pp. 3045-3052). IEEE.
[35] A. Morehead, L. Ogden, G. Magee, R. Hosler, B. White, and G. Mohler. Low cost gunshot detection using deep learning on the Raspberry Pi. In 2019 IEEE International Conference on Big Data (Big Data). IEEE, 2019.
[34] J. Lu, S. Sridhar, R. Pandey, M. Al Hasan, and G. Mohler, Investigate Transitions into Drug Addiction through Text Mining of Reddit Data. Proceedings of 25th ACM SIGKDD Conference on Knowledge Discovery and Data Mining, (KDD 2019).
[33] Pandey, S., Chowdhury, N., Raje, R. R., Mohler, G., and Carter, J. Trust estimation of historical social harm events in Indianapolis metro area. In 2019 IEEE International Smart Cities Conference (ISC2 2019).
2018
[32] G. Mohler and M. Porter. Rotational grid, PAI-maximizing crime forecasts. Statistical Analysis and Data Mining: The ASA Data Science Journal 11.5 (2018): 227-236.
[31] Y. Cheng, M. Dundar, G. Mohler. A coupled ETAS-I2GMM point process with applications to fault detection. Annals of Applied Statistics 12(3), DOI: 10.1214/18-AOAS1134.
[30] R. Hosler, X. Liu, J. Carter, A. Ganci, J. Hill, R. Raje, G. Mohler and M. Saper. RaspBary: Hawkes point process Wasserstein barycenters as a service. Technical Report.
[29] R. Vijayan and G. Mohler. Forecasting retweet count during elections using graph convolution neural networks. IEEE International Conference on Data Science and Advanced Analytics (DSAA 2018).
[28] S. Pandey, N. Chowdhury, M. Patil, R. Raje, G. Mohler, and J. Carter. CDASH: Community data analytics for social harm. IEEE International Smart Cities Conference (ISC2 2018).
[27] R. Pandey and G. Mohler. Evaluation of crime topic models: topic coherence vs. spatial concentration. IEEE International Conference on Intelligence and Security Informatics (ISI 2018).
[26] G. Mohler and P.J. Brantingham. Privacy preserving, crowd sourced crime Hawkes processes. International Workshop on Social Sensing (SocialSens). IEEE 2018.
[25] Brantingham, P.J., M. Valasik, G. Mohler. Does Predictive Policing Lead to Biased Arrests? Results from a Randomized Controlled Trial. Statistics and Public Policy. 5(1), 2018.
[24] G. Mohler, J. Carter, R. Raje. Improving social harm indices with a modulated Hawkes process. International Journal of Forecasting, 34 (3), 2018.
[23] G. Mohler, R. Raje, J. Carter, M Valasik, and P.J. Brantingham. A penalized likelihood method for balancing accuracy and fairness in predictive policing. IEEE International Conference on Systems, Man, and Cybernetics (SMC2018).
[22] S. Khorshidi, M. Al Hasan, G. Mohler, and M. Short. The role of graphlets in viral processes on networks. Journal of Nonlinear Science, 2018.
[21] J. Carter, G. Mohler and B. Ray. Spatial Concentration of Opioid Overdose Deaths in Indianapolis: An Application of the Law of Crime Concentration at Place to a Public Health Epidemic. Journal of Contemporary Criminal Justice, 35 (2), 2018.
2017
[20] G. Mohler, M. Short, P.J. Brantingham. The concentration-dynamics tradeoff in crime hot spotting. In Unraveling the Crime-Place Connection: New Directions in Theory and Policy, edited by David Weisburd and John Eck. 2017.
2016
[19] C. Ramaiah, A. Tran, E. Cox, and G. Mohler. Deep learning for driving detection from mobile phones. KDD Workshop on Machine learning for large scale transportation systems. 2016.
2015
[18] G. Mohler, M. Short, S. Malinowski, M. Johnson, G. Tita, A. Bertozzi, P.J. Brantingham. Randomized controlled field trials of predictive policing. Journal of the American Statistical Association. 110 (512). 2015.
2014
[17] G. Mohler. Learning convolution filters for inverse covariance estimation of neural network connectivity. Advances in Neural Information Processing Systems. 2014.
[16] J. T. Woodworth, G. Mohler, A. L. Bertozzi and P. J. Brantingham, Nonlocal crime density estimation incorporating housing information, Phil. Trans. Roy. Soc. A, 2014.
[15] G. Mohler, Marked point process hotspots maps for homicide and gun crime prediction in Chicago, International Journal of Forecasting, 30, 491, 2014.
[14] M. Short, G. Mohler, P. J. Brantingham, and G. Tita, Gang rivalry dynamics via coupled point process networks, Discrete and Continuous Dynamical Systems B, 34, 1459, 2014.
2013
[13] G. Mohler, Discussion of: Estimating the historical and future probabilities of large terrorist events, Annals of Applied Statistics, 7 (4), 1866, 2013.
[12] G. Mohler, Modeling and estimation of multi-source clustering in crime and security data, Annals of Applied Statistics, 7 (3), 1525, 2013
[11] E. Lewis and G. Mohler, A nonparametric EM algorithm for multiscale Hawkes processes, Technical Report.
[10] D. Sledge and G. Mohler, Eliminating malaria in the American South: An analysis of the decline of malaria in 1930s Alabama, American Journal of Public Health, 103 (8), 1381, 2013.
2012
[9] G. Mohler and M. Short, Geographic profiling from kinetic models of criminal behavior, SIAM J. on Applied Math, 72 (1), 163, 2012.
[8] E. Lewis, G. Mohler, P. J. Brantingham, and A. Bertozzi, Self-exciting point process models of civilian deaths in Iraq, Security Journal, 25 (3), 244, 2012.
2011
[7] M. G. Ascenzi, C. Blanco, I Drayer, H. Kim, R. Wilson, K. Retting, K. Lyons, and G. Mohler, Effect of localization, length and orientation of chondrocytic primary cilium on murine growth plate organization, Journal of Theoretical Biology, 285 (1), 147, 2011.
[6] G. Mohler, M. Short, P. Brantingham, F. Schoenberg, and G. Tita, Self-exciting point process modeling of crime, Journal of the American Statistical Association, 106 (493), 100, 2011.
[5] G. Mohler, A. Bertozzi, T. Goldstein and S. Osher, Fast TV Regularization for 2D Maximum Penalized Likelihood Estimation, Journal of Computational and Graphical Statistics, 20 (2), 479, 2011.
2010
[4] L. Smith, M. Keegan, T. Wittman, G. Mohler, and A Bertozzi, Improving Density Estimation By Incorporating Spatial Information, EURASIP J. on Advances in Signal Processing, Volume 2010, 12 pages.
2009
[3] H. D. Ceniceros, G. H. Fredrickson, and G. O. Mohler, Coupled flow-polymer dynamics via statistical field theory: modeling and computation, Journal of Computational Physics, 228 (5), 1624, 2009.
2008
[2] E. M. Lennon, G. O. Mohler, H. D. Ceniceros, C. J. Garcia-Cervera, and G. H. Fredrickson, Numerical solutions of the complex Langevin equations in polymer field theory, Multiscale Modeling and Simulation, 6 (4), 1347, 2008.
2007
[1] H. D. Ceniceros and G. O. Mohler, A practical splitting method for stiff SDEs with applications to problems with small noise, Multiscale Modeling and Simulation, 6 (1), 212, 2007.