Figure 2
From: Long-Term Monitoring of Dolphin Biosonar Activity in Deep Pelagic Waters of the Mediterranean Sea

Biosonar detection. (a) Confusion matrix shows the comparison between the Manual analysis (True condition) and the Automatic analysis (Predicted condition). Performance of the algorithm is showed for recordings acquired in 2005 and 2006. In 2005, TP rate (TP/P) was 72%, FP rate (FP/N) was 67%, FN (FN/P) rate was 0.8% and TN (TN/N) rate was 97%. In 2006, they were 86%, 33%, 3.5% and 91% respectively. (b) (top) Number of clicks recorded per file during 2005 and 2006. (bottom) Mean Amplitude (x-axis, peak to peak) and mean Frequency Peak (y-axis) of the clicks selected in each file. Recordings classified as False Positive are marked in red.