优化模型,以使用不同的合成采样方法预测一步前进的废水处理厂的极端流量
Isaac G Musaazi1, Lu Liu2, Andrew Shaw3
1Department of Civil and Environmental Engineering, Duke University, BOX 90287, Durham, NC, 27708, USA.
Journal of environmental management
|July 22, 2025
概括
由于数据有限,预测水资源回收设施 (WRRF) 罕见的高流量事件具有挑战性. 机器学习模型,特别是带有ADASYN数据增强的随机森林,显示出改善流量预测和运营管理的前景.
科学领域:
- 环境工程 环境工程
- 水处理技术水处理技术
- 环境管理中的数据科学
背景情况:
- 高流量事件给水资源回收设施 (WRRF) 带来了重大运营挑战.
- 由于历史数据有限,难以预测这些罕见事件,这阻碍了有效的治疗操作.
- 数据驱动的建模提供了潜在的解决方案,但需要强大的方法来处理罕见事件数据.
研究的目的:
- 评估统计和机器学习 (ML) 模型,以预测一天前发生的高流事件.
- 为了比较合成数据增强技术 (SMOTE,ADASYN) 在改善罕见事件模型性能方面的有效性.
- 确定表现最佳的模型和数据增强策略,用于预测WRRF中的极端流量事件.
主要方法:
- 评估了后勤回归,支向量机和随机森林模型.
- 将基线模型与用SMOTE和ADASYN生成的合成数据训练的模型进行比较.
- 测试了来自两个不同的WRRF与组合和单独的下水道系统的数据的模型.
主要成果:
- 无论是SMOTE还是ADASYN,都提高了高流量事件在培训数据中的表现.
- ADASYN专注于接近决策边界的合成样本,产生了更大的性能改进.
- 随机森林模型与ADASYN相结合,在预测两个设施的前一天极端流量事件方面表现出卓越的表现.
结论:
- 将ADASYN等先进的采样技术与ML模型相结合,可显著改善高流量事件的预测.
- 随机森林-ADASYN方法提供了一个强大的解决方案,用于识别处理厂的极端流量事件.
- 这些发现支持开发可靠的预测模型,以加强WRRF的运营管理和控制.
相关概念视频
Typical Model Studies
442
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.
442
Design Example: Creating a Hydraulic Model of a Dam Spillway
310
Scaled hydraulic models of dam spillways provide a practical way to replicate and study the intricate flow dynamics of these structures. Often built to a 1:15 ratio, these models allow for observing critical water behavior, such as velocity distribution, flow patterns, and energy dissipation.
310
Rapidly Varying Flow
141
Rapidly varying flow (RVF) in open channels is characterized by abrupt changes in flow depth over a short distance, with the rate of depth change relative to distance often approaching unity. These flows are inherently complex due to their transient and multi-dimensional nature, making exact analysis difficult. However, approximate solutions using simplified models provide valuable insights into their behavior.Key Features of Rapidly Varying FlowRVF is commonly observed in scenarios involving...
141
Mechanistic Models: Compartment Models in Individual and Population Analysis
87
Mechanistic models are utilized in individual analysis using single-source data, but imperfections arise due to data collection errors, preventing perfect prediction of observed data. The mathematical equation involves known values (Xi), observed concentrations (Ci), measurement errors (εi), model parameters (ϕj), and the related function (ƒi) for i number of values. Different least-squares metrics quantify differences between predicted and observed values. The ordinary least...
87
Sampling Methods: Sample Types
433
Sampling materials are classified into three main types: solid, liquid, and gas.
Solid samples include a variety of substances, such as sediments from water bodies, soil, metals, and biological tissues. Two standard methods for extracting sediments from water bodies are grab sampling and piston coring. Grab sampling involves using a device to collect a discrete sediment sample from the bottom of a water body with minimal disturbance. Grab samples do not always represent the entire area due to...
Solid samples include a variety of substances, such as sediments from water bodies, soil, metals, and biological tissues. Two standard methods for extracting sediments from water bodies are grab sampling and piston coring. Grab sampling involves using a device to collect a discrete sediment sample from the bottom of a water body with minimal disturbance. Grab samples do not always represent the entire area due to...
433
Steps in Outbreak Investigation
209
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:
209


