Alla Petrakova & Steve Mussmann

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Presentation transcript:

Alla Petrakova & Steve Mussmann 5th Progress Report Alla Petrakova & Steve Mussmann

DivCluST 2012 algorithm. 2 steps: -Shorten trajectories while keeping spatiotemporal structure -Cluster segments of shorter trajectories Similar in form to TraClus but uses speed in addition to spatial information.

Hurricane

Trucks

Starkey

Learning trajectory patterns by clustering -2009 paper. -Mix and match trajectory similarity measures and clustering techniques. -"The choice of clustering method and distance measure was not important... though LCSS was consistently a top performer" -Implemented LCSS and modified Hausdorff with agglomerative clustering.

Hurricane Modified Hausdorff

Hurricane LCSS

Trucks Modified Hausdorff

Trucks LCSS

Intersection Modified Hausdorff

Intersection LCSS

Robust online trajectory clustering -2012 Paper -View clusters as direction fields (unit vector fields). -Incrementally add trajectories and merge clusters

Hurricane

Trucks

Intersection

Clustering of Vehicle Trajectories - 2010 paper (26 citations) - Proposes a twist on modified Hausdorff difference distance measure - Compares results against LCSS and DTW using Agglomerative and Spectral clustering

Vehicle Motion - Agglomerative DTW

Vehicle Motion - mod Hausdorff

Vehicle Motion - LCSS

Hurricane Dataset - Agglomerative DTW

Hurricane Dataset - Agglomerative LCSS

Trucks Dataset - DTW