污染物
北京
环境科学
中国
气象学
计算机科学
污染
支持向量机
空气污染物
空气污染
算法
机器学习
地理
生态学
考古
生物
作者
Meizi Li,Yuqi Zhang,Yunjie Lu,Maozhen Li,Yunwen Chen,Jianguo Pan,Bo Zhang
标识
DOI:10.1016/j.apr.2022.101396
摘要
Accurate air pollutant concentrations prediction allows effective environment management to reduce the impact of pollution. The encoder-decoder model based on long short-term memory (LSTM) demonstrated great potential in air pollutant concentrations prediction. However, the influence of the hidden vector on the output of the decoder at each moment may be different during the long time-series prediction problem. In this paper, an attention mechanism is introduced in the decoder part to further improve the final prediction of the pollutant concentrations by filtering out some noise. In the experimental stage, we exploited the data collected from five representative cities in North China (Beijing, Tianjin, Shijiazhuang, Taiyuan, and Baotou) from 2014 to 2019 as the experimental dataset, and added the auxiliary data unique to North China. Then we divided the datasets into four seasonal datasets (spring, summer, autumn, and winter) to obtain targeted seasonal prediction models for the different seasons. The experimental results show that the model can predict the future trend of the pollutant concentration in a certain season relatively accurately.
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