Unsupervised Abnormality Detection

Cyclone Preheater Abnormality Study

Models

Of all the models implemented, Isolated Forest was used for further analysis.

outliers_fraction = 0.05 was used to train all models.

Models Used:

• Elliptic Envelope
• Using Tolerance Intervals
• Isolation Forest
• Local Outlier Factor (LOF)
• SGD One-Class SVM
• DBSCAN

Application of PCA

• Elliptic Envelope

• Tolerance Intervals

• Isolation Forest

• Local Outlier Factor (LOF)

• SGD One-Class SVM