Figure 2 : Spoken digit classification with 5 GHz bandwidth.

From: Parallel photonic information processing at gigabyte per second data rates using transient states

Figure 2

Blue (red) data correspond to optical (electrical) information injection. The same reservoir responses for identifying the digit (a) and the speaker (b) demonstrate the potential of RC for true parallel computation. Best performance is found for a laser diode current Ib close to threshold (grey dotted line). A 20-fold cross-validation was repeated several times, with the s.d. given by the error bars.