Figure 3
Discrimination of various attractants with DeSIRAM. (a) Accuracy rate spectrum of decipherment of chemical types of blind samples using DeSIRAM. Accuracy rates of decipherment of 15 groups consisting of 2 of 6 standard attractants. Vertical and horizontal axes indicate attractants included in the tested group. Six amino acid attractants are numbered arbitrary, l-Asp (1), l-Glu (2), d-Asp (3), l-Asn (4), l-Cys (5) and l-Ser (6). Black square shows data of Fig. 2d. (b) Accuracy rate of decipherment for attractant groups consisting of 6 standard attractants: l-Asp (dark blue), l-Glu (purple), d-Asp (red), l-Asn (green), l-Cys (yellow) and l-Ser (light blue). The left bar shows theoretical accuracy rate of RS (≅ 1/6 = 0.17). The black line on the left bar shows the standard deviation calculated numerically (= 0.04, see SI for details). The right bar shows accuracy rate by DeSIRAM. The decipherment accuracy of 0.43 is high relative to that by RS. The probability of an identification success rate of 0.43 by RS is 1.3 × 10−19. (c) Dependencies of accuracy rate (blue makers) and DSI (red markers) on number of attractant (NA) including in the tested groups. Plotted values are presented as averages and error bars indicated the standard deviations (n = 15, 20, 15, 6, 1 for NA = 2, 3, 4, 5, 6, respectively). Numbers of data (N) varies with NA. Here, 6 amino acids were prepared as standard attractants. For instance, in groups consisting of three amino acid attractants, N becomes 6C3 = 20. The DSI of each group was calculated as, \(DSI = - \left[ { - log_{2} \left( {accuracy\;rate\;by\;DeSIRAM} \right) - \left\{ { - log_{2} \left( {accuracy\;rate\;by\;RS} \right)} \right\}} \right]\), and, averaged in each NA group.
