ABSTRACT

Today is a data flood era, although we acquire knowledge from a large amount of data for decision-making and forecasting work, and use the knowledge gained from the huge data obtained knowledge is scarce, due to objective things in the real world or uncertainty phenomenon led to most of the people in the understanding of the field of information and knowledge inaccurate, knowledge truly is, and will always be uncertain

2 KNOWLEDGE DISCOVERY

2.1 Knowledge discovery task

Summary: summary of the data and summarized. Traditional easiest Summary method is to calculate the statistical value of the summed value on the individual fields of the database, mean, variance value, or represented by the histograms, pie charts and other graphical way.