A Sequence-to-Sequence Air Quality Predictor Based on the n-Step Recurrent Prediction
Open Access
- 28 March 2019
- journal article
- research article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Access
- Vol. 7, 43331-43345
- https://doi.org/10.1109/access.2019.2908081
Abstract
Increasingly, more people are suffering from the effects of air pollution. This study took Beijing as an example and proposed an attention-based air quality predictor (AAQP) that could better protect people from air pollution. The AAQP is a seq2seq model, and it exploits historical air quality data and weather data to predict future air quality indexes. Although existing research has promoted seq2seq for air quality prediction, there are still two problems. First, the seq2seq has a slow training speed so the original RNN in the encoder was replaced with a fully connected encoder to accelerate the training process. Position embedding was also introduced to help the fully connected encoder find the sequential relationships among source sequences. Another problem is error accumulation caused by recurrent prediction. Accordingly, the n-step recurrent prediction was proposed to solve this problem. The experimental results validated that the AAQP with n-step recurrent prediction had better performance than the related arts since the error accumulation was reduced, and the training time was significantly decreased compared with the original seq2seq attention model.Keywords
Funding Information
- National Natural Science Foundation of China (61702021)
- Natural Science Foundation of Beijing Municipality (4174082, 4182040)
- General Program of Science and Technology Plans of the Beijing Education Committee (SQKM201710005021)
This publication has 32 references indexed in Scilit:
- Hybrid PSO–SVM-based method for forecasting of the remaining useful life for aircraft engines and evaluation of its reliabilityReliability Engineering & System Safety, 2015
- Effective Approaches to Attention-based Neural Machine TranslationPublished by Association for Computational Linguistics (ACL) ,2015
- Prediction of the Level of Air Pollution Using Principal Component Analysis and Artificial Neural Network Techniques: a Case Study in MalaysiaWater, Air, & Soil Pollution, 2014
- Learning Phrase Representations using RNN Encoder–Decoder for Statistical Machine TranslationPublished by Association for Computational Linguistics (ACL) ,2014
- Linear and nonlinear modeling approaches for urban air quality predictionScience of The Total Environment, 2012
- Application of an SVM-based regression model to the air quality study at local scale in the Avilés urban area (Spain)Mathematical and Computer Modelling, 2011
- Air quality prediction in Uberlândia, Brazil, using linear models and neural networksPublished by Elsevier ,2007
- Logistic regression and artificial neural network classification models: a methodology reviewJournal of Biomedical Informatics, 2002
- Long Short-Term MemoryNeural Computation, 1997
- Support-vector networksMachine Learning, 1995