关键词: 决策表, 连续属性, 信息量, 离散化

Abstract: The paper puts forward a method of discretization of continuous properties based on distribution characterization of interval data.It considers the frequency of attribute values in choice the cut point，uses information quantity as feedback on the basis of consistency within the interval and differences between the intervals，merger the intervals.The experiment result shows that the algorithm is effective.It can improve the efficiency of knowledge reduction when the decision table keeps stable.

Key words: decision table, continuous attributes, information quantity, discretization