Dataset Delft pump 5x3 noisy

Basic characteristics Delft pump 5x3 noisy

216

target objects

The noisy 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. All normal situations are used in the target class. Download mat-file with Prtools dataset.

684

outlier objects

64

features

Unsupervised PCA Delft pump 5x3 noisy

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 5x3 noisy

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

Results Delft pump 5x3 noisy

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

547, 0 outliers, AUC (x100) 5x strat. 10-fold
Classifiers Preproc
none unit var PCA 95\%
Gauss 74.7 (0.0) 72.6 (0.0) 63.1 (0.0)
Min.Cov.Determinant NaN (0.0) NaN (0.0) 65.3 (0.0)
Mixture of Gaussians 85.6 (1.6) 66.9 (1.3) 77.3 (3.3)
Naive Parzen 60.1 (0.0) 60.1 (0.0) 72.2 (0.0)
Parzen 92.6 (0.0) 68.0 (0.0) 95.1 (0.0)
k-means 55.9 (1.1) 56.9 (0.5) 50.3 (1.8)
1-Nearest Neighbors 92.6 (0.0) 68.5 (0.0) 95.2 (0.0)
k-Nearest Neighbors 92.6 (0.0) 68.5 (0.0) 95.2 (0.0)
Nearest-neighbor dist 95.1 (0.0) 75.2 (0.0) 94.1 (0.0)
Principal comp. 81.3 (0.0) 70.1 (0.0) 65.5 (0.0)
Self-Organ. Map 69.9 (1.6) 60.5 (0.3) 66.5 (3.6)
Auto-enc network 59.5 (0.1) 57.6 (0.3) 50.7 (0.3)
MST 94.2 (0.0) 68.0 (0.0) 95.9 (0.0)
L_1-ball 53.0 (0.0) 54.6 (0.0) 71.5 (0.0)
k-center 56.8 (2.1) 56.5 (0.3) 53.4 (3.4)
Support vector DD 92.3 (0.3) 54.1 (0.4) 94.6 (0.5)
Minimax Prob. DD 92.3 (0.0) 68.4 (0.0) 95.0 (0.0)
LinProg DD 89.6 (0.0) 58.0 (0.0) 94.6 (0.0)
Lof DD 89.2 (0.0) 66.8 (0.0) 85.4 (0.0)
Lof range DD 83.1 (0.0) 63.6 (0.0) 79.7 (0.0)
Loci DD 73.8 (0.0) 58.3 (0.0) 64.3 (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