Accumulation of information is essential for human knowledge production, and information technology has accelerated the speed of data accumulation. The total data generated within a year is predicted to be more than 1 Yottabytes in 2030, which is much larger than the total storage available at that time. This is a big problem because most of data generated have to be discarded soon after generation with little contribution to knowledge production.
There is another critical problem of the increase in quantity of information with high speed, which is called information overload. Decision accuracy decrease with amount of information beyond a certain point while it increases at the beginning. We create sciences of quality and value of information to solve these problems.