کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
974324 1480142 2015 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Crowd macro state detection using entropy model
ترجمه فارسی عنوان
تشخیص حالت کلان جمعیت با استفاده از مدل آنتروپی
کلمات کلیدی
رفتارهای جمعیتی، آنتروپی رفتار جمعیت جهش جمعیت، پارامتر سفارش
موضوعات مرتبط
مهندسی و علوم پایه ریاضیات فیزیک ریاضی
چکیده انگلیسی

In the crowd security research area a primary concern is to identify the macro state of crowd behaviors to prevent disasters and to supervise the crowd behaviors. The entropy is used to describe the macro state of a self-organization system in physics. The entropy change indicates the system macro state change. This paper provides a method to construct crowd behavior microstates and the corresponded probability distribution using the individuals’ velocity information (magnitude and direction). Then an entropy model was built up to describe the crowd behavior macro state. Simulation experiments and video detection experiments were conducted. It was verified that in the disordered state, the crowd behavior entropy is close to the theoretical maximum entropy; while in ordered state, the entropy is much lower than half of the theoretical maximum entropy. The crowd behavior macro state sudden change leads to the entropy change. The proposed entropy model is more applicable than the order parameter model in crowd behavior detection. By recognizing the entropy mutation, it is possible to detect the crowd behavior macro state automatically by utilizing cameras. Results will provide data support on crowd emergency prevention and on emergency manual intervention.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica A: Statistical Mechanics and its Applications - Volume 431, 1 August 2015, Pages 84–93
نویسندگان
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