Method and system for calculating activity mode probability density functions of population in different microenvironments

Abstract

The invention discloses a method and system for calculating activity mode probability density functions of population in different microenvironments, and belongs to the technical field of air pollution prevention and control. Atmospheric risk health profit and loss assessment is mostly the limitation of test point research for small groups. According to the invention, a random forest model and a subject behavior model are fused; a low-cost method for calculating probability density functions of different activity modes of population in different microenvironments is developed, firstly, behavior mode data are collected through an information acquisition unit, and then the collected behavior mode data are sent to a data processing unit for analysis and processing to obtain individual behavior decision rules; and the simulated population spatial distribution diagram is outputted through a model simulation unit according to the individual behavior decision rule obtained after analysis andprocessing to obtain a dynamic population distribution result. The use method is high in precision, solves a technical problem of simulating the probability distribution of a large-scale group activity mode, and improves the simulation precision of the activity mode.

Description

technical field [0001] The invention relates to the technical field of air pollution prevention and control, and more specifically, to a method and system for calculating the probability density function of population activity patterns in different microenvironments. Background technique [0002] With the rapid development of my country's economy and the continuous advancement of urbanization, air pollution has gradually developed into a prominent environmental problem in our country. Epidemiological research results at home and abroad show that air pollution, especially PM 2.5 Exposure is significantly associated with a range of acute and chronic end-health changes, including respiratory and circulatory disease morbidity and mortality. The results of the Global Burden of Disease study also showed that in 2010 PM 2.5 It is the fourth leading mortality risk factor in China, resulting in about 1.23 million excess deaths, which decreased slightly in 2015 but remained as high ...

AI Technical Summary

Problems solved by technology

However, because the individual sampling monitoring method is expensive and requires a lot of time and manpower to train the testees, the wearing of the instrument will have an uncontrollable impact on the daily behavior of the testees and even invade privacy. The scope of application is limited. Therefore, in recent years, most of the individual exposure studies using this method at home and abroad are non-representative pilot studies, which are not suitable for providing exposure data for health benefit and loss assessment studies at the macro level.

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