Knowledge discovery method of crowd trampling behavior evolution under disaster condition

Abstract

The invention relates to a knowledge discovery method of crowd trampling behavior evolution under a disaster condition. The method comprises the following steps that: 1) crowd trampling scene element features are extracted, simulation is carried out in an intelligent crowd evacuation model, so that trampling evolution behavior features in an evacuation process are obtained, and the discourse-domain object set of a discourse-domain space layer is constructed; (2) rough set attribute discretization is performed on the crowd trampling scene element features and the trampling evolution behavior features; 3) a trampling evolution mechanism knowledge expression of a ''condition-decision'' two-dimensional information pattern is established, and knowledge reduction is performed on the trampling evolution mechanism knowledge expression; 4) a meta-rule library is generated according to the trampling evolution behavior features; and 5) the meta-rule library and evacuation instances are loaded, so that the generalized rule library of trampling evolution is generated. Compared with the prior art, the method of the invention can realize the automatic knowledge discovery of a crowd trampling behavior evolution mechanism through the classical rough set theory and can assist in solving the problem of the lack of knowledge of the crowd trampling evolution mechanism.

Description

technical field [0001] The invention relates to the technical field of crowd stampede prevention, in particular to a knowledge discovery method for the evolution of crowd stampede behavior under disaster conditions. Background technique [0002] At present, the analysis and prevention of crowd stampede accidents are still in their infancy. The stampede during crowd evacuation may occur alone in the "rumor-panic" mode, or it may be a secondary disaster of sudden disasters (fires, earthquakes, explosions, poison gas leaks, etc.), coupled in the "disaster-panic" mode occur. [0003] Most of the existing crowd evacuation models focus on the research of crowd kinematics and dynamics, mainly describing crowd evacuation behavior, and analyzing the relationship between building evacuation elements (minimum width of stairs and fire exits, etc.) and crowd capacity and evacuation time , some emergency management strategies and suggestions for preventing crowd stampede in buildings ar...

AI Technical Summary

Problems solved by technology

[0004] Analyzing the conclusions of the existing research on crowd evacuation, it can be found that the research on the evolution mechanism of stampede is in the preliminary stage, and there are still problems such as dependence on knowledge and experience and lack of knowledge

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