Acronym: EEType: Whole SeriesYear: 2014Publication: DAMI

Description: The EE is a combination of 11 nearest neighbour (NN) classifiers that use whole series elastic distance measures in the time domain and with first order derivatives. The 11 classifiers in EE are 1-NN with: Euclidean distance; full window DTW; DTW with window size set through cross validation; derivative DTW with full window; derivative DTW with window set through cross validation; weighted DTW; derivative weighted DTW; longest common subsequence; edit distance with real penalty; time warp edit distance, and the move-split-merge distance metric. Lines and Bagnall show that none of the individual components of EE significantly outperforms DTW with window set through cross validation. They then demonstrate that an ensemble of these 11 whole series elastic measures that combines the predictions of 1-NN classifiers using a voting scheme that weights according to cross-validation training set accuracy is significantly more accurate than any single component, including DTW.
Source Code: Elastic Ensemble Code
Published Results:Recreated Results:

Recreated
Dataset:Result:
Adiac0.6650
ArrowHead0.8597
Beef0.5320
BeetleFly0.8225
BirdChicken0.8480
Car0.7995
CBF0.9930
ChlorineConcentration0.6586
CinCECGtorso0.9459
Coffee0.9893
Computers0.7316
CricketX0.8011
CricketY0.7943
CricketZ0.8036
DiatomSizeReduction0.9460
DistalPhalanxOutlineCorrect0.7683
DistalPhalanxOutlineAgeGroup0.7680
DistalPhalanxTW0.6541
Earthquakes0.7350
ECG2000.8810
ECG50000.9386
ECGFiveDays0.8472
ElectricDevices0.8307
FaceAll0.9757
FaceFour0.8793
FacesUCR0.9483
FiftyWords0.8207
Fish0.9134
FordA0.7506
FordB0.7569
GunPoint0.9742
Ham0.7634
HandOutlines0.8801
Haptics0.4506
Herring0.5663
InlineSkate0.4764
InsectWingbeatSound0.5810
ItalyPowerDemand0.9508
LargeKitchenAppliances0.8158
Lightning20.8352
Lightning70.7634
Mallat0.9607
Meat0.9785
MedicalImages0.7605
MiddlePhalanxOutlineCorrect0.7818
MiddlePhalanxOutlineAgeGroup0.6088
MiddlePhalanxTW0.5251
MoteStrain0.8751
NonInvasiveFatalECGThorax10.8487
NonInvasiveFatalECGThorax20.9139
OliveOil0.8790
OSULeaf0.8116
PhalangesOutlinesCorrect0.7805
Phoneme0.2992
Plane1.0000
ProximalPhalanxOutlineCorrect0.8389
ProximalPhalanxOutlineAgeGroup0.8053
ProximalPhalanxTW0.7591
RefrigerationDevices0.6759
ScreenType0.5543
ShapeletSim0.8273
ShapesAll0.8859
SmallKitchenAppliances0.7033
SonyAIBORobotSurface10.7942
SonyAIBORobotSurface20.8701
StarlightCurves0.9415
Strawberry0.9588
SwedishLeaf0.9159
Symbols0.9574
SyntheticControl0.9940
ToeSegmentation10.7876
ToeSegmentation20.9070
Trace0.9960
TwoLeadECG0.9585
TwoPatterns1.0000
UWaveGestureLibraryX0.8047
UWaveGestureLibraryY0.7305
UWaveGestureLibraryZ0.7263
UWaveGestureLibraryAll0.9683
Wafer0.9969
Wine0.8867
WordSynonyms0.7784
Worms0.6444
WormsTwoClass0.7174
Yoga0.8854