Neuro-evolutionary computing paradigm for Painlevé equation-II in nonlinear optics Iftikhar Ahmad, Sufyan Ahmad, Muhammad Awais, Siraj Ul Islam Ahmad and Muhammad Asif Zahoor Raja Eur. Phys. J. Plus, 133 5 (2018) 184 Published online: 16 May 2018 DOI: 10.1140/epjp/i2018-12013-3