Erratum to: Neural Comput & Applic

DOI 10.1007/s00521-016-2264-1

The original article contains an error in the Acknowledgment.

"This work is supported by Sichuan Provincial Project of International Scientific and Technical Exchange and Research Collaboration Programs." in Acknowledgements should be changed into "This work is supported by Sichuan Provincial Project of International Scientific and Technical Exchange and Research Collaboration Programs (Project No. 2016HH0023)."