3/6/2023 0 Comments Netlogo crt![]() ![]() In this case we say that we make an informed search. ![]() But if we would have any global information about the structure of the space, maybe we could take decisions of the correct direction to go faster form the initial state to the solution. we have no knowledge about the space, and we make a blind search. If all the information we have about the state space is local, that is, we only know how to reach new states from previous ones by direct application of transitions, BFS algorithm (or similar ones) is the best we can do. For this reason, although the algorithm returns an optimal sequence of actions that reachs the solution (in the sense that it has the minimum number of actions), in the process to build this sequence the algorithm can perform a huge number of steps (and, consequently, spend a huge number of time to reach the solution). In that post we presented a very simple algorithm called Breath First Search ( BFS) providing a sorted way of browsing the space of states in a blind way. Usually, we will work with problems that look for solutions as sequences of actions that transform initial states, that are not solutions of the problem, into final states, that are solutions of the problem. Key words:crowd behavior crowd evacuation Netlogo simulation Flocking algorithm目 录TOC \o "1-3" \h \u HYPERLINK \l _Toc5756 1 引言 PAGEREF _Toc5756 1 HYPERLINK \l _Toc3941 1.1 课题的来源及意义 PAGEREF _Toc3941 1 HYPERLINK \l _Toc19869 1.2 国内外发展状况 PAGEREF _Toc19869 1 HYPERLINK \l _Toc27923 1.In a previous post we have explored the idea of solving problems by projecting them on state spaces and then using a search algorithm to find the solution. This experiment can better represent the crowd evacuation scenario and adjust variables, so it is more intuitive and simple. This experiment mainly used Flocking algorithm to implement the evacuation,simulate the crowd evacuation in case of disasters in a large public places.In this experiment, we can modify the number of population and the rotation Angle to more accurately simulate the crowd evacuation. In this paper under the background of the evacuation study ,we use the Netlogo which is a simulation modeling tool based on the Agent for the evacuation study.This paper describes the source of the subject, the significance, goals, and then based on the understanding of the operating principle and the product feature of Netlogo, we apply Netlogo module to achieve a simple crowd evacuation experiment. The workers' congestion level is higher, the risk is greater, and cause casualties and property loss will be more serious, so the status of the crowd behavior simulation in real life have been already more and more significant. ![]()
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