I am reading the paper "A new approach to intrusion detection using Artificial Neural Networks and fuzzy clustering" by Gang Wang, Jinxing Hao, Jian Ma and Lihua Huang (Expert Systems with Applications, 37(9):6225–6232, 2010, available at Science Direct). I don't understand the term "detection stability". What does that mean?
The context is that existing intrusion detection systems are claimed to have poor "detection stability" when it comes to rare attacks.