Building grey model GM(1,1) with translation transformation
First, the conditions for GM(1, 1) modeling are analyzed, and it revealed that the whole trend of the class ratio sequence and the whole concave-convex of data sequence both affect the precision of the model Secondly, the action of translation transformation on the features of data sequence is studied theoreticaly, and the satisfied interval of translation values is derived Finally, an effective numerical method is presented which is illustrated by a medical example.
cybernetics classification schemes numerical control data structures