As a newbie in Machine Learning, I have a set of trajectories that may be of different lengths. I wish to cluster them, because some of them are actually the same path and they just SEEM different due to the noise.
In addition, not all of them are of the same lengths. So maybe although Trajectory A is not the same as Trajectory B, yet it is part of Trajectory B. I wish to present this property after the clustering as well.
I have only a bit knowledge of
K-means Clustering and
Fuzzy N-means Clustering. How may I choose between them two? Or should I adopt other methods?
Any method that takes the "belongness" into consideration?
(e.g. After the clustering, I have 3 clusters
A, B and C. One particular
trajectory X belongs to
cluster A. And a shorter
trajectory Y, although is not clustered in
A, is identified as part of
=================== UPDATE ======================
The aforementioned trajectories are the pedestrians' trajectories. They can be either presented as a series of (x, y) points or a series of step vectors (length, direction). The presentation form is under my control.