Abstract
Gang-related homicides account for a significant proportion of criminal activity across the world, especially in countries of Latin America. They often arise from territorial fights and, distinct from other types of homicides, are characterized by area-specific risk indicators. Current crime modeling and prediction research has largely ignored gang-related homicides owing to: (i) latent dependencies between gangs and spatial areas, (ii) area-specific crime patterns, and (iii) insufficiency of spatially fine-grained predictive signals. To address these challenges, we propose a novel context-aware multi-task multi-level learning framework to jointly learn area-specific crime prediction models and the potential operating territories of gangs. Specifically, to sufficiently learn the finer-grained area-specific tasks, the abundant knowledge from coarse-grained tasks is exploited through multi-task learning. Experimental results using online news articles from Bogotá, Colombia demonstrate the effectiveness of our proposed method.
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Acknowledgments
This material is based upon work supported by the U.S. Department of Homeland Security under Grant Award Number 2017-ST-061-CINA01. The views and conclusions contained in this document are those of the authors and should not be interpreted as necessarily representing the official policies, either expressed or implied, of the U.S. Department of Homeland Security.
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Akhter, N., Zhao, L., Arias, D., Rangwala, H., Ramakrishnan, N. (2018). Forecasting Gang Homicides with Multi-level Multi-task Learning. In: Thomson, R., Dancy, C., Hyder, A., Bisgin, H. (eds) Social, Cultural, and Behavioral Modeling. SBP-BRiMS 2018. Lecture Notes in Computer Science(), vol 10899. Springer, Cham. https://doi.org/10.1007/978-3-319-93372-6_3
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DOI: https://doi.org/10.1007/978-3-319-93372-6_3
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