建立基于辐射基函数网络的集成模型,用于绘制山体滑坡易感性的地图
Nguyen Le Minh1,2, Pham The Truyen1,2, Tran Van Phong3
1Institute of Geophysics, Vietnam Academy of Science and Technology, Hanoi, Vietnam.
Environmental science and pollution research international
|August 23, 2023
概括
集体学习模型显著改善了山体滑坡易感性预测. 包装-RBFC模型实现了98%的AUC,证明了其在危险评估和风险降低方面的有效性.
科学领域:
- 地质科学 地质科学
- 计算机科学 计算机科学
- 环境科学 环境科学
背景情况:
- 滑坡易感度建模对于减轻自然灾害至关重要.
- 集体学习技术通过整合多个模型来提高预测准确性.
- 传统的模型经常与影响滑坡发生的因素的复杂相互作用作斗争.
研究的目的:
- 开发和评估集体学习模型,用于预测山体滑坡易感性.
- 为了比较不同组合方法 (Dagging, Bagging, Decorate) 与辐射基函数分类器 (RBFC) 结合的性能.
- 确定最准确的模型来预测越南中区的山体滑坡.
主要方法:
- 使用Dagging,Bagging和Decore算法与RBFC相结合,开发集体模型.
- 利用了45个历史滑坡和13个影响变量 (地形,地质,土地使用,人类活动) 的地理空间数据库.
- 使用接收器运行特征曲线下的面积 (AUC) 和其他指标 (PPV,NPV,SST,SPF,ACC,RMSE) 的性能评估.
主要成果:
- 包装-RBFC模型表现出优异的性能,其AUC为98%,PPV为86%,NPV为95%,SST为95%,SPF为87%,ACC为91%,RMSE为0.297.
- 在土地滑坡易感性预测方面,Bagging-RBFC的表现优于Dagging-RBFC,Decorate-RBFC和单一的RBFC模型.
- 该研究证实了集体学习在提高山体滑坡预测能力方面的有效性.
结论:
- 集体学习技术,特别是Bagging-RBFC,对于准确的山体滑坡易感性建模非常有效.
- 开发的模型提供了一个可靠的工具,用于在易发生山体滑坡的地区进行危险评估.
- 实施这些模型可以帮助拯救生命,减少全球基础设施损坏.
相关概念视频
Design Example: Analyzing Capacity Contours for Flood Risk Assessment
70
Flood risk assessment involves careful planning and analysis to ensure the safety of communities near water retention structures. Capacity contours are a vital tool in this process, as they illustrate the potential spread of water at specific levels in a given area. In the context of building a bund across a small valley, these contours play a critical role in evaluating the safety of nearby residential areas.In this example, the bund is intended to store stormwater in the valley. The engineers...
70
Response Surface Methodology
176
Response Surface Methodology (RSM) is a collection of statistical and mathematical techniques used to develop, improve, and optimize processes. It is particularly valuable when many input variables or factors potentially influence a response variable.
The process of RSM involves several key steps:
The process of RSM involves several key steps:
176
Applications of GIS: Disaster Management and Emergency Response
108
Geographic Information System (GIS) technology is essential for risk identification, action prioritization, and resource optimization in critical situations like flooding and earthquakes. By integrating spatial and demographic data, GIS provides a comprehensive framework for emergency response.GIS integrates data layers, like rainfall intensity, topography, elevation profiles, and river levels, to model high-risk flood zones. These layers assess areas susceptible to flooding based on their...
108
Mechanistic Models: Compartment Models in Algorithms for Numerical Problem Solving
79
Mechanistic models play a crucial role in algorithms for numerical problem-solving, particularly in nonlinear mixed effects modeling (NMEM). These models aim to minimize specific objective functions by evaluating various parameter estimates, leading to the development of systematic algorithms. In some cases, linearization techniques approximate the model using linear equations.
In individual population analyses, different algorithms are employed, such as Cauchy's method, which uses a...
In individual population analyses, different algorithms are employed, such as Cauchy's method, which uses a...
79
Radius of Gyration of an Area
1.6K
The second moment of area, also known as the moment of inertia of area, is a crucial factor in understanding an object's resistance against bending deformation, or stiffness. To accurately estimate the second moment of area along any axis, one needs to concentrate all areas associated with that object into a thin strip, which should be placed parallel to that particular axis.
1.6K
Typical Model Studies
380
Fluid mechanics model studies often utilize scaled-down systems to predict fluid behavior in full-scale environments, such as river flows, dam spillways, and structures interacting with open surfaces. Maintaining Froude number similarity in river models is crucial, as it replicates surface flow features like wave patterns and velocities.
380


