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Improved and Ensemble Methods for Time Series Classification with Cote


Affiliations
1 Department of Computer Science and Engineering, Hindusthan Institute of Technology, Coimbatore-641028, Tamil Nadu, India
2 Hindusthan Institute of Technology, Coimbatore-641028, Tamil Nadu, India
 

Background/Objectives: To classify the time series data efficiently by introducing Collective of Transformation-Based Ensembles method (COTE).

Methods/Statistical analysis: In existing scenario, the method is introduced named as COTE. It is mainly used for increasing the classification accuracy than preceding research. Another algorithm is named as Time series classification (TSC) which is used for transformation process which is based on comparative features. COTE contains classifiers constructed in the time, frequency, change, and shapelet transformation domains combined in alternative ensemble structures. However it has issue with transformation process and hence accuracy of the classification is reduced significantly. To avoid this issue introduced the concept called as run length transformation to improve the classification accuracy higher than existing system.

Findings: The run length algorithm is improved along with genetic approach to produce the optimal features. In this scenario, the measures are considered as similarity coefficient, likelihood ratio and dynamic time warping (DTW). Based on the modified k- nearest neighbor distance concept the speed is increased and classification accuracy is improved prominently.

Improvements/Applications: From the experimental result we can conclude that our proposed scenario yields better classification performance rather than existing scenario.


Keywords

Collective of Transformation-Based Ensembles Method, K Nearest Neighbor, Periodogram Transformation, Heterogeneous Ensemble, Elastic Ensemble.
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  • Improved and Ensemble Methods for Time Series Classification with Cote

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Authors

S. Yamunadevi
Department of Computer Science and Engineering, Hindusthan Institute of Technology, Coimbatore-641028, Tamil Nadu, India
K Sasi Kala Rani
Hindusthan Institute of Technology, Coimbatore-641028, Tamil Nadu, India
M. Pavithra
Department of Computer Science and Engineering, Hindusthan Institute of Technology, Coimbatore-641028, Tamil Nadu, India
M. Priyanga
Department of Computer Science and Engineering, Hindusthan Institute of Technology, Coimbatore-641028, Tamil Nadu, India

Abstract


Background/Objectives: To classify the time series data efficiently by introducing Collective of Transformation-Based Ensembles method (COTE).

Methods/Statistical analysis: In existing scenario, the method is introduced named as COTE. It is mainly used for increasing the classification accuracy than preceding research. Another algorithm is named as Time series classification (TSC) which is used for transformation process which is based on comparative features. COTE contains classifiers constructed in the time, frequency, change, and shapelet transformation domains combined in alternative ensemble structures. However it has issue with transformation process and hence accuracy of the classification is reduced significantly. To avoid this issue introduced the concept called as run length transformation to improve the classification accuracy higher than existing system.

Findings: The run length algorithm is improved along with genetic approach to produce the optimal features. In this scenario, the measures are considered as similarity coefficient, likelihood ratio and dynamic time warping (DTW). Based on the modified k- nearest neighbor distance concept the speed is increased and classification accuracy is improved prominently.

Improvements/Applications: From the experimental result we can conclude that our proposed scenario yields better classification performance rather than existing scenario.


Keywords


Collective of Transformation-Based Ensembles Method, K Nearest Neighbor, Periodogram Transformation, Heterogeneous Ensemble, Elastic Ensemble.

References