Dataset Delft pump 1x3

Basic characteristics Delft pump 1x3

71

target objects

The Delft pump dataset, with some description in A. Ypma, Learning methods for machine vibration analysis and health monitoring, thesis Delft university of Technology, 2001. From a submersible pump 5 vibration measurements are taken under different normal and abnormal conditions. From the time signals an 64D envelope spectrum is derived. The 5 measurements are used as independent objects. One load with three speeds situations are used in the target class. Download mat-file with Prtools dataset.

229

outlier objects

64

features

Unsupervised PCA Delft pump 1x3

On the left, the PCA scatterplot is shown, on the right the retained variance for varying number of features.
On the left, the PCA scatterplot is shown of data rescaled to unit variance, on the right the retained variance.

Supervised Fisher Delft pump 1x3

On the left, the Fisher scatterplot is shown, on the right the ROC curve along this direction.

Results Delft pump 1x3

The experiments are performed using dd_tools. A rudimentary explanation of the classifiers is given in the classifier section.

546, 0 outliers, AUC (x100) 5x strat. 10-fold
Classifiers Preproc
none unit var PCA 95\%
Gauss 74.7 (0.0) 73.8 (0.0) 54.1 (0.0)
Min.Cov.Determinant NaN (0.0) NaN (0.0) 53.7 (0.0)
Mixture of Gaussians 74.8 (1.6) 65.0 (2.7) 66.7 (3.9)
Naive Parzen 62.0 (0.0) 62.0 (0.0) 69.2 (0.0)
Parzen 74.3 (0.0) 60.7 (0.0) 69.7 (0.0)
k-means 65.8 (4.4) 58.1 (0.4) 57.6 (4.5)
1-Nearest Neighbors 74.4 (0.0) 60.8 (0.0) 69.8 (0.0)
k-Nearest Neighbors 74.4 (0.0) 60.8 (0.0) 69.8 (0.0)
Nearest-neighbor dist 72.8 (0.0) 65.7 (0.0) 69.6 (0.0)
Principal comp. 72.0 (0.0) 66.1 (0.0) 55.9 (0.0)
Self-Organ. Map 73.7 (0.4) 58.6 (0.4) 66.9 (0.5)
Auto-enc network 62.1 (9.7) 54.9 (3.8) 56.7 (0.2)
MST 73.1 (0.0) 60.0 (0.0) 68.3 (0.0)
L_1-ball 45.7 (0.0) 52.7 (0.0) 54.4 (0.0)
k-center 73.3 (0.4) 58.9 (1.7) 69.3 (1.2)
Support vector DD 73.6 (0.3) 54.4 (0.1) 69.3 (0.5)
Minimax Prob. DD 74.3 (0.0) 60.8 (0.0) 69.7 (0.0)
LinProg DD 74.5 (0.0) 58.3 (0.0) 69.3 (0.0)
Lof DD 72.9 (0.0) 61.5 (0.0) 69.6 (0.0)
Lof range DD 73.0 (0.0) 61.6 (0.0) 69.2 (0.0)
Loci DD 70.8 (0.0) 56.8 (0.0) 62.6 (0.0)

Classifier projection spaces The first classifier projection spaces are obtained by computing the classifier label disagreements (setting the threshold on 10% target error) and applying an MDS on the resulting distance matrix between classifiers:



Original



Unit variance



PCA mapped

Classifier projection spaces The second versions of the classifier projection spaces are obtained by computing the classifier ranking disagreements and applying an MDS on the resulting distance matrix between classifiers:



Original



Unit variance



PCA mapped