The University of Electro-Communications, in collaboration with Fujitsu Laboratories, has developed assistive technology for urban security planning using artificial intelligence (AI).Using "game theory", which is one of the mathematical theories, we devised an algorithm to solve the "security placement problem" assuming the placement of checkpoints to catch criminals at high speed.It takes about 20 minutes to formulate a security plan for a road network (23 wards of Tokyo) with 5 intersections, which used to take several days.It is expected that problems that could not be solved in a realistic calculation time can be applied to actual cities by significantly speeding up the calculation.

 In the road network, there are places where the "security effect" due to the placement of checkpoints is high and places where it is low.The number of patterns of actions on the police side was greatly reduced by devising measures such as removing the parts with low security effect from the candidates for placement.By simulating about 3 pseudo road networks, it was confirmed that the developed algorithm can find the solution with the highest security effect for more than 99% of the problems.

 In crowded areas, it is difficult to completely block the route of criminal invasion and escape.Therefore, it is required to effectively deploy security guards to minimize damage.Until now, the planning of security plans has been left to the experience and intuition of experts, but in recent years, game theory that mathematically describes each offensive and defensive action has been attracting attention as a technology to support the judgment of experts.

University of Electro-Communications

Aiming to create and practice knowledge and skills that contribute to the sustainable development of humankind, we train advanced engineers and researchers with comprehensive practical skills.

The University of Electro-Communications originated from the Wireless Telegraph Training Institute managed by the Telegraph Association, which was established in 1918 as a training institution for wireless communication engineers.We aim to develop and produce highly-skilled human resources who will lead science and technology innovation in the field of science and technology and support a knowledge-based society. […]

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