Time Series Data Classification Using Discriminative Interpolation with Sparsity

2017 ◽  
Author(s):  
Nenad Mijatovic ◽  
Rana Haber ◽  
Anand Rangarajan ◽  
Anthony O. Smith ◽  
Adrian M. Peter
Keyword(s):  
Time Series ◽  
Time Series Data ◽  
Data Classification ◽  
Series Data

scholarly journals An IoT Time Series Data Security Model for Adversarial Attack Based on Thermometer Encoding

2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Zhongguo Yang ◽  
Irshad Ahmed Abbasi ◽  
Fahad Algarni ◽  
Sikandar Ali ◽  
Mingzhu Zhang
Keyword(s):  
Time Series ◽  
Deep Learning ◽  
Time Series Data ◽  
Data Classification ◽  
Classification Model ◽  
Series Data ◽  
Security Model ◽  
Learning Methods ◽  
Model Based ◽  
Adversarial Attack

Nowadays, an Internet of Things (IoT) device consists of algorithms, datasets, and models. Due to good performance of deep learning methods, many devices integrated well-trained models in them. IoT empowers users to communicate and control physical devices to achieve vital information. However, these models are vulnerable to adversarial attacks, which largely bring potential risks to the normal application of deep learning methods. For instance, very little changes even one point in the IoT time-series data could lead to unreliable or wrong decisions. Moreover, these changes could be deliberately generated by following an adversarial attack strategy. We propose a robust IoT data classification model based on an encode-decode joint training model. Furthermore, thermometer encoding is taken as a nonlinear transformation to the original training examples that are used to reconstruct original time series examples through the encode-decode model. The trained ResNet model based on reconstruction examples is more robust to the adversarial attack. Experiments show that the trained model can successfully resist to fast gradient sign method attack to some extent and improve the security of the time series data classification model.

scholarly journals Time Series Data Classification on Grassmann Manifold

2021 ◽  
Vol 1848 (1) ◽  
pp. 012037
Author(s):  
Waheeb Al-Samhi ◽  
Mohammed Al-Soswa ◽  
Yunes Al-Dhabi
Keyword(s):  
Time Series ◽  
Grassmann Manifold ◽  
Time Series Data ◽  
Data Classification ◽  
Series Data
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