通过使用随机森林的单站和多站数据集,估计土耳其Kızılırmak河流的流量
1Department of Civil Engineering, Faculty of Engineering, Aksaray University, Aksaray 68100, Turkey
概括
本研究介绍了用于流量预测的机器学习模型. 一个单站模型在历史数据归算方面表现出色,而多站模型则改善了未来的流量预测.
科学领域:
- 水文学的水文学
- 环境科学 环境科学
- 数据科学数据科学数据科学
背景情况:
- 精确的流量预测对于水资源管理至关重要.
- 历史数据缺口和未来预测在水文学中带来了重大挑战.
研究的目的:
- 开发和评估开源,数据驱动的机器学习模型,用于流量预测.
- 为了比较单站 (SS) 和多站 (MS) 模型的性能,用于历史归算和未来预测.
主要方法:
- 利用随机森林算法进行流量预测.
- 开发了两个模型:一个使用单站 (SS) 数据,另一个使用多个附近站 (MS).
- 在土耳其的Kızılırmak河上应用模型,使用RMSE,NSE,R2和PBIAS评估性能.
主要成果:
- 在历史流量估计方面,SS模型表现出强的性能 (RMSE:8.54,NSE/R2:0.98,PBIAS:0.7%).
- 在未来流量预测方面,MS模型表现优异 (RMSE: 17.65,NSE: 0.91,R2: 0.93,PBIAS: -13.64%).
- 该MS模型更好地捕获了用于未来预测的流动趋势.
结论:
- 在SS模型是有效的填补历史流量数据的空白.
- 该MS模型为预测未来流量提供了更高的准确性,特别是在捕捉趋势方面.
相关概念视频
Multiple Regression
3.0K
Multiple regression assesses a linear relationship between one response or dependent variable and two or more independent variables. It has many practical applications.
Farmers can use multiple regression to determine the crop yield based on more than one factor, such as water availability, fertilizer, soil properties, etc. Here, the crop yield is the response or dependent variable as it depends on the other independent variables. The analysis requires the construction of a scatter plot...
Farmers can use multiple regression to determine the crop yield based on more than one factor, such as water availability, fertilizer, soil properties, etc. Here, the crop yield is the response or dependent variable as it depends on the other independent variables. The analysis requires the construction of a scatter plot...
3.0K
Rapidly Varying Flow
105
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...
105
Survival Tree
118
Survival trees are a non-parametric method used in survival analysis to model the relationship between a set of covariates and the time until an event of interest occurs, often referred to as the "time-to-event" or "survival time." This method is particularly useful when dealing with censored data, where the event has not occurred for some individuals by the end of the study period, or when the exact time of the event is unknown.
Building a Survival Tree
Constructing a...
Building a Survival Tree
Constructing a...
118
Design Example: Analyzing Capacity Contours for Flood Risk Assessment
74
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...
74
Typical Model Studies
385
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.
385
Precipitation Gravimetry
6.7K
Precipitation gravimetry is based on converting an analyte into a sparingly soluble precipitate, which is separated by filtration and weighed. An ideal precipitate should be pure, insoluble, of known composition, and easily filtered from the reaction mixture.
In determining nickel by gravimetric analysis, a precipitant of ethanolic dimethylglyoxime is added to a hot nickel salt solution. This is quickly followed by the dropwise addition of dilute ammonia solution until precipitation occurs. A...
In determining nickel by gravimetric analysis, a precipitant of ethanolic dimethylglyoxime is added to a hot nickel salt solution. This is quickly followed by the dropwise addition of dilute ammonia solution until precipitation occurs. A...
6.7K


