Figure 4
Discrimination of unidentified chemical mixtures with DeSIRAM. (a) CW bias traces caused by chemical composition stimuli of two similar, but distinct, cola beverages, cola A (left) and cola B (right). Chemotactic responses to solutions diluted to 1:2000. (b) Concentration dependencies of first 3 indexes, \(y_{1} ,\;y_{2} ,\; y_{3}\), of characteristic vectors. Each graph is coloured according to chemical solution species (purple, cola A; green, cola B). Plot makers and lines have the same meaning as in Fig. 2c. (c) Accuracy rate of decipherment for chemical compositions (cola A, n = 22; cola B, n = 22). The left bar shows theoretical decipherment accuracy of RS. The black line on the left bar indicates the standard deviation calculated numerically. The right bar shows the accuracy rate by DeSIRAM. Decipherment accuracy of 0.80 is high relative to that of RS. The probability of an identification success rate of 0.80 by RS is 4.0 × 10−5. DeSIRAM with E. coli distinguished two solutions, although the compositions are not reported.
