Affiliation: | 1. Research and Innovation Centre “Athena”, Institute for Language and Speech Processing, Xanthi GR 67100, Greece;2. Laboratory of Electronics, Department of Electrical and Computer Engineering, Democritus University of Thrace, Xanthi GR 67100, Greece;3. Unconventional Computing Centre, University of the West of England, Bristol BS16 1QY, United Kingdom |