IEEE RAICS-2018 is the fourth edition of the International Conference on Recent Advances in Computational Systems to be organized by the IEEE Kerala Section in Trivandrum, Kerala, India during December 6-8, 2018. This conference is a flagship event of IEEE Kerala section, and would cater to the frontier areas of intelligent computation and its diversified application in various technological fields. The theme of RAICS is \"Smart systems for a smarter world\". The theme and tracks of the conference have been chosen considering the interest of various societies of IEEE, recent trends in industry, and the state of art in the areas of intelligent computation systems. In addition to eight technical tracks, the RAICS 2018 conference has keynote addresses by reputed speakers, panel sessions, and open forums to facilitate interaction among young researchers, students, academicians, technologists, and engineers.