Crime Hotspot Prediction, Risk-Aware Route Planning and Patrol Planning Using GIS and Machine Learning
Author
Assistant Professor Smita Mangesh Junnarkar ,Vineeth Ravichandran
Abstract
Crime is not spread evenly across a city. A small number of streets, junctions and neighbourhoods account for a disproportionate share of incidents, and this regularity gives police departments a practical reason to look for forecasting tools. This paper presents an integrated framework that turns historical crime records into three connected outputs: a map of predicted crime probability, a set of risk-aware travel routes, and a patrol plan for available units. The study area is divided into a regular grid, and each cell is described by temporal, spatial, and contextual features. Spatial clustering and local statistics identify existing hotspots, while supervised learning models (Logistic Regression, Random Forest and Gradient Boosting) estimate the probability of at least one incident in a cell during the next time window. The predicted probabilities are then attached to the edges of a road network so that a shortest-path search can trade a small increase in travel distance for a lower exposure to risk. A greedy coverage procedure uses the same probabilities to allocate patrol units. The complete pipeline is implemented in Python and delivered through an interactive Streamlit dashboard. We describe the design, the evaluation protocol, and the ethical safeguards required when predictive tools are used in policing.
Keywords
crime hotspot prediction, geographic information systems, machine learning, risk-aware routing, patrol planning, spatial analysis, predictive policing
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References
[1] Anselin, L. (1995). Local indicators of spatial association—LISA. Geographical Analysis, 27(2), 93–115.
[2] Boeing, G. (2017). OSMnx: New methods for acquiring, constructing, analyzing, and visualizing complex street networks. Computers, Environment and Urban Systems, 65, 126–139.
[3] Breiman, L. (2001). Random forests. Machine Learning, 45(1), 5–32.
[4] Chainey, S., Tompson, L., and Uhlig, S. (2008). The utility of hotspot mapping for predicting spatial patterns of crime. Security Journal, 21(1–2), 4–28.
[5] Chawla, N. V., Bowyer, K. W., Hall, L. O., and Kegelmeyer, W. P. (2002). SMOTE: Synthetic minority over-sampling technique. Journal of Artificial Intelligence Research, 16, 321–357.
[6] Chen, T., and Guestrin, C. (2016). XGBoost: A scalable tree boosting system. Proceedings of the 22nd ACM SIGKDD International Conference on Knowledge Discovery and Data Mining, 785–794.
[7] Cohen, L. E., and Felson, M. (1979). Social change and crime rate trends: A routine activity approach. American Sociological Review, 44(4), 588–608.
[8] Dijkstra, E. W. (1959). A note on two problems in connexion with graphs. Numerische Mathematik, 1(1), 269–271.
[9] Ensign, D., Friedler, S. A., Neville, S., Scheidegger, C., and Venkatasubramanian, S. (2018). Runaway feedback loops in predictive policing. Proceedings of Machine Learning Research, 81, 160–171.
[10] Ester, M., Kriegel, H.-P., Sander, J., and Xu, X. (1996). A density-based algorithm for discovering clusters in large spatial databases with noise. Proceedings of the 2nd International Conference on Knowledge Discovery and Data Mining, 226–231.
[11] Getis, A., and Ord, J. K. (1992). The analysis of spatial association by use of distance statistics. Geographical Analysis, 24(3), 189–206.
[12] Hochreiter, S., and Schmidhuber, J. (1997). Long short-term memory. Neural Computation, 9(8), 1735–1780.
[13] Lum, K., and Isaac, W. (2016). To predict and serve? Significance, 13(5), 14–19.
[14] Mohler, G. O., Short, M. B., Brantingham, P. J., Schoenberg, F. P., and Tita, G. E. (2011). Self-exciting point process modeling of crime. Journal of the American Statistical Association, 106(493), 100–108.
[15] Pedregosa, F., et al. (2011). Scikit-learn: Machine learning in Python. Journal of Machine Learning Research, 12, 2825–2830.
[16] Ratcliffe, J. H. (2004). The hotspot matrix: A framework for the spatio-temporal targeting of crime reduction. Police Practice and Research, 5(1), 5–23.
[17] Sherman, L. W., Gartin, P. R., and Buerger, M. E. (1989). Hot spots of predatory crime: Routine activities and the criminology of place. Criminology, 27(1), 27–56.
[18] Silverman, B. W. (1986). Density Estimation for Statistics and Data Analysis. Chapman and Hall, London.
[19] Weisburd, D. (2015). The law of crime concentration and the criminology of place. Criminology, 53(2), 133–157.
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