Trajectory Similarity Matching and Remaining Useful Life Prediction Based on Dynamic Time Warping

Table 1

Comparison of four data kernel methods.

Kernel method	Smoothing power	Training speed	Evaluation speed	Storage consumption
Gaussian kernel	Medium	Medium	Medium	High
Laplace kernel	Low	Slow	Slow	High
Polynomial kernel	Perfect	Fast	Fast	Low
Chi-squared kernel	High	Fast	Fast	Medium