相关实验视频
Updated: Jul 25, 2025

16:14
Trajectory Data Analyses for Pedestrian Space-time Activity Study
Published on: February 25, 2013
13.6K
通过相关性和深度学习技术,探索流行病对运输的影响
Samah A Gamel1, Esraa Hassan2, Nora El-Rashidy2
1Faculty of Engineering, Horus University, Damietta, Egypt.
概括
随着COVID-19的流行,城市交通系统发生了重大变化. 这项研究开发了一种使用机器学习的交通预测技术,以准确预测与大流行有关的交通变化.
科学领域:
- 城市规划和交通科学.
- 流行病学和公共卫生.
- 数据科学和机器学习.
背景情况:
- COVID-19大流行严重影响了全球的人类迁移和城市交通.
- 停留在家的命令导致从公共交通转移到私人车辆或汽车共享.
- 了解这些运输模式的变化对于危机期间有效的交通管理至关重要.
研究的目的:
- 分析COVID-19和城市交通模式之间的关系.
- 为流行病引起的交通变化开发一个预测模型.
- 在这种情况下,评估机器学习的有效性.
主要方法:
- 使用相关性分析和机器学习技术.
- 在五个不同的城市网络中模拟了交通模型.
- 开发了一种交通预测技术 (TPT),包括影响计算方法 (皮尔森相关系数,线性回归) 和交通预测模块 (TPM).
主要成果:
- 确定了COVID-19传播和运输模式的变化之间的强烈相关性.
- 使用卷积神经网络 (CNN) 的交通预测模块 (TPM) 在预测这些影响方面表现出很高的准确性.
- 观察到交通拥堵模式发生了显著的变化.
结论:
- 这项研究证实了COVID-19流行病与城市交通动态之间的重要联系.
- 拟议的交通预测技术,特别是基于CNN的TPM,对于预测与流行病相关的交通影响是有效的.
- 调查结果支持通过预测建模改进的紧急交通管理策略.
相关概念视频
Steps in Outbreak Investigation
155
In the ever-evolving field of public health, statistical analysis serves as a cornerstone for understanding and managing disease outbreaks. By leveraging various statistical tools, health professionals can predict potential outbreaks, analyze ongoing situations, and devise effective responses to mitigate impact. For that to happen, there are a few possible stages of the analysis:
155
Causality in Epidemiology
500
Causality or causation is a fundamental concept in epidemiology, vital for understanding the relationships between various factors and health outcomes. Despite its importance, there's no single, universally accepted definition of causality within the discipline. Drawing from a systematic review, causality in epidemiology encompasses several definitions, including production, necessary and sufficient, sufficient-component, counterfactual, and probabilistic models. Each has its strengths and...
500
Statistical Methods for Analyzing Epidemiological Data
426
Epidemiological data primarily involves information on specific populations' occurrence, distribution, and determinants of health and diseases. This data is crucial for understanding disease patterns and impacts, aiding public health decision-making and disease prevention strategies. The analysis of epidemiological data employs various statistical methods to interpret health-related data effectively. Here are some commonly used methods:
426
Manipulation and Analysis
45
GIS manipulation and analysis functions are vital for decision-making and planning. These activities range from data retrieval tasks, such as selecting information based on specific criteria, to advanced analytical techniques that address complex spatial problems.One critical GIS analysis method is overlaying, which combines multiple data layers to examine impacts. For example, overlaying a river-dammed lake boundary with road networks can identify affected infrastructure. Another common...
45
Correlation
11.9K
In statistics, two variables are said to be correlated if the values of one variable are associated with the other variable. Depending on the relationship between two variables, correlation can be of three types– positive correlation, negative correlation, and zero correlation.
Two variables, for example, a and b, are said to be positively correlated if both variables move in the same direction. In other words, a positive correlation exists between two variables, a and b, if:
Two variables, for example, a and b, are said to be positively correlated if both variables move in the same direction. In other words, a positive correlation exists between two variables, a and b, if:
11.9K
Residuals and Least-Squares Property
7.4K
The vertical distance between the actual value of y and the estimated value of y. In other words, it measures the vertical distance between the actual data point and the predicted point on the line
If the observed data point lies above the line, the residual is positive, and the line underestimates the actual data value for y. If the observed data point lies below the line, the residual is negative, and the line overestimates the actual data value for y.
The process of fitting the best-fit...
If the observed data point lies above the line, the residual is positive, and the line underestimates the actual data value for y. If the observed data point lies below the line, the residual is negative, and the line overestimates the actual data value for y.
The process of fitting the best-fit...
7.4K

