2017

Unsupervised and Semi-supervised Anomaly Detection with LSTM Neural Networks

Ergen, Tolga, Mirza, Ali Hassan, Kozat, Suleyman Serdar

Understand

We investigate anomaly detection in an unsupervised framework and introduce Long Short Term Memory (LSTM) neural network based algorithms.

  • In particular, given variable length data sequences, we first pass these sequences through our LSTM based structure and obtain fixed length sequences.
  • We then find a decision function for our anomaly detectors based on the One Class Support Vector Machines (OC-SVM) and Support Vector Data Description (SVDD) algorithms.
  • As the first time in the literature, we jointly train and optimize the parameters of the LSTM architecture and the OC-SVM (or SVDD) algorithm using highly effective gradient and quadratic programming based training methods.

Reading the bibliography…