Behavicker: Eavesdropping Computer-Usage Activities through Acoustic Side Channel

Figure 8

The classification accuracies of different feature subsets during feature selection process at different layers and for different groups. It is noted that features contained in subsets from F1 to F10 vary in different subfigures.

(a) Top 10 subsets of features and their corresponding accuracies in coarse layer

(b) Top 10 subsets of features and corresponding accuracies in G1

(c) Top 10 subsets of features and corresponding accuracies in G2

(d) Top 10 subsets of features and corresponding accuracies in G3