Improved Grey Wolf Optimization- (IGWO-) Based Feature Selection on Multiview Features and Enhanced Multimodal-Sequential Network Intrusion Detection Approach

Algorithm 1

Procedures for training MDAEs.

Input: multifeature sets

Output: combined representations

Step 1: forward encodes

1: forto do

2: Train Gaussian RBMs for currently chosen feature sets

3: Preserve Gaussian RBMs as independent interpreters

4: Combine hidden layers of Gaussian RBMs with intermediate layers

5: Use intermediate layers as inputs to train subsequent RBMs as joint interpreters

6: Acquire preliminary joint representations

Step 2: backward decodes

7: Distribute RBMs uniformly to create MDAEs

8: Upgrade MDAEs as per rebuilding faults of picked feature sets

9: end