Gaussian Model-Based Fully Convolutional Networks for Multivariate Time Series Classification

Author(s):  
Changyang Tai ◽  
Ze Yang ◽  
Huicheng Zhang ◽  
Gongqing Wu ◽  
Junwei Lv ◽  
...  
IEEE Access ◽  
2020 ◽  
Vol 8 ◽  
pp. 212247-212257
Author(s):  
Xu Cheng ◽  
Peihua Han ◽  
Guoyuan Li ◽  
Shengyong Chen ◽  
Houxiang Zhang

IEEE Access ◽  
2019 ◽  
Vol 7 ◽  
pp. 139580-139591 ◽  
Author(s):  
Gongqing Wu ◽  
Huicheng Zhang ◽  
Ying He ◽  
Xianyu Bao ◽  
Lei Li ◽  
...  

IEEE Access ◽  
2019 ◽  
Vol 7 ◽  
pp. 67718-67725 ◽  
Author(s):  
Fazle Karim ◽  
Somshubra Majumdar ◽  
Houshang Darabi

Author(s):  
Kaushal Paneri ◽  
Vishnu TV ◽  
Pankaj Malhotra ◽  
Lovekesh Vig ◽  
Gautam Shroff

Deep neural networks are prone to overfitting, especially in small training data regimes. Often, these networks are overparameterized and the resulting learned weights tend to have strong correlations. However, convolutional networks in general, and fully convolution neural networks (FCNs) in particular, have been shown to be relatively parameter efficient, and have recently been successfully applied to time series classification tasks. In this paper, we investigate the application of different regularizers on the correlation between the learned convolutional filters in FCNs using Batch Normalization (BN) as a regularizer for time series classification (TSC) tasks. Results demonstrate that despite orthogonal initialization of the filters, the average correlation across filters (especially for filters in higher layers) tends to increase as training proceeds, indicating redundancy of filters. To mitigate this redundancy, we propose a strong regularizer, using simple yet effective filter decorrelation. Our proposed method yields significant gains in classification accuracy for 44 diverse time series datasets from the UCR TSC benchmark repository.


IEEE Access ◽  
2018 ◽  
Vol 6 ◽  
pp. 1662-1669 ◽  
Author(s):  
Fazle Karim ◽  
Somshubra Majumdar ◽  
Houshang Darabi ◽  
Shun Chen

2021 ◽  
Author(s):  
Fatemehalsadat Madaeni ◽  
Karem Chokmani ◽  
Rachid Lhissou ◽  
Saeid Homayuni ◽  
Yves Gauthier ◽  
...  

Abstract. In cold regions, ice-jam events result in severe flooding due to a rapid rise in water levels upstream of the jam. These floods threaten human safety and damage properties and infrastructures as the floods resulting from ice-jams are sudden. Hence, the ice-jam prediction tools can give an early warning to increase response time and minimize the possible corresponding damages. However, the ice-jam prediction has always been a challenging problem as there is no analytical method available for this purpose. Nonetheless, ice jams form when some hydro-meteorological conditions happen, a few hours to a few days before the event. The ice-jam prediction problem can be considered as a binary multivariate time-series classification. Deep learning techniques have been successfully applied for time-series classification in many fields such as finance, engineering, weather forecasting, and medicine. In this research, we successfully applied CNN, LSTM, and combined CN-LSTM networks for ice-jam prediction for all the rivers in Quebec. The results show that the CN-LSTM model yields the best results in the validation and generalization with F1 scores of 0.82 and 0.91, respectively. This demonstrates that CNN and LSTM models are complementary, and a combination of them further improves classification.


2021 ◽  
Author(s):  
Zhi Chen ◽  
Yongguo Liu ◽  
Jiajing Zhu ◽  
Yun Zhang ◽  
Rongjiang Jin ◽  
...  

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