关键词: 粒度计算, 商空间, 分层, 合成, 产量预测

Abstract: The granular analytical method of crop yield forecasting is put forward. How to select an appropriate granularity is analyzed in the crop yield series based on the theory of quotient space and granular computing. New quotient space can be obtained after universe X granulation by means of attribute partition and attribute f granulation by adopting different granularity. And the new space can make complex problem simple. Appropriate granularity can be selected by using delamination and synthesis method in the quotient space theory. It can get more accurate information in the yield series and be more close to human intelligence. Experimental results of wheat yield forecasting also show that the granular analytical method is more effective.

Key words: granular computing, quotient space, delamination, synthesis, crop yield forecasting