(Refiles to add editing credit) By Komal Salecha Indian enterprise artificial intelligence firm Fractal Analytics plans to maintain high research and development spending ahead of its market debut for which a date has not yet been set, a top executive said. Fractal, which specialises in AI-driven decision-making for large businesses, will continue to invest 'significantly', and possibly increase its research outlay to stay competitive, chief executive officer Srikanth Velamakanni told Reuters.