davy cielen is an experienced entrepreneurbook authorand professor he is the co-owner with arno and mo of optimately and maitontwo data science companies based in belgium and the ukrespectivelyand co-owner of third data science company based in somaliland the main focus of these companies is on strategic big data scienceand they are occasionally consulted by many large companies davy is an adjunct professor at the ieseg school of management in lillefrancewhere he is involved in teaching and research in the field of big data science arno meysman is driven entrepreneur and data scientist he is the co-owner with davy and mo of optimately and maitontwo data science companies based in belgium and the ukrespectivelyand co-owner of third data science company based in somaliland the main focus of these companies is on strategic big data scienceand they are occasionally consulted by many large companies arno is data scientist with wide spectrum of interestsranging from medical analysis to retail to game analytics he believes insights from data combined with some imagination can go long way toward helping us to improve this world xviii