Conditional Reactive Hierarchical Memory using empirical knowledge is proposed. We defined this empirical knowledge as a empirical sensory factor. The memory process is divided into an acquisition stage, a retention stage and a retrieval stage. In a retrieval stage, the empirical sensory factor effects on the reaction of a certain class. This system is applied to the area for estimating the purchasing degree from the type of customer's tastes, the pattern of commodities and the evaluation of a company.
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