通过基于特征和模型的转移学习增强了河流溶解氧的预测
Xinlin Chen1, Wei Sun1, Tao Jiang2
1Carbon-Water Research Station in Karst Regions of Northern Guangdong, School of Geography and Planning, Sun Yat-Sen University, Guangzhou, Guangdong, 510006, China; Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, Guangdong, 519082, China.
Journal of environmental management
|November 21, 2024
概括
这项研究通过将特征和基于模型的转移学习 (TL) 结合用于长短期记忆 (LSTM) 模型来增强水质预测. 将这些TL方法结合起来,可以显著改善数据较差的河流地区的溶氧 (DO) 预测.
科学领域:
- 环境科学 环境科学
- 数据科学数据科学数据科学
- 水文学的水文学
背景情况:
- 水质监测数据经常显示盆地内的不同位置的不均性.
- 从数据丰富的地点提取知识,以帮助数据差的地点,对于有效的水质管理至关重要.
- 转移学习 (TL) 提供了一种有希望的方法,通过利用来自数据丰富的网站的数据来改善数据贫困站点的预测.
研究的目的:
- 将基于特征和基于模型的转移学习方法进行比较和结合,以改善溶解氧 (DO) 预测.
- 使用不同的TL策略构建和评估用于水质预测的长短期记忆 (LSTM) 模型.
- 评估组合TL方法的有效性,而不是单一类型的TL,用于数据较差的河流地区.
主要方法:
- 采用基于特征 (转移组件分析 - TCA) 和基于模型 (预培训和微调) 的转移学习技术.
- 开发了长期短期记忆 (LSTM) 模型,用于广州西运河的溶氧 (DO) 预测.
- 将基线LSTM模型与使用单类型和组合转移学习策略的模型进行比较.
主要成果:
- 最好的单一类型的TL策略 (没有TCA的LSTM,预训后结完全连接的层) 与基线相比,提高了3天的DO预测性能 (Nash-Sutcliffe效率 - NSE) 高达46.2%.
- 最好的结合TL策略 (使用TCA和结第二个完全连接层) 与基线相比,进一步提高了3天的DO预测性能 (NSE) 48.7%.
- 结合特征和基于模型的TL方法,在数据较差的河流环境中显示出优异的DO预测性能.
结论:
- 结合基于特征和基于模型的转移学习,在数据较差的河流系统中产生了优异的溶氧 (DO) 预测性能.
- 转移学习策略显著提高了LSTM模型用于水质预测的准确性.
- 这项研究为优化环境数据分析TL方法提供了有价值的见解.
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