The input element group (Na), the value of each input element of the first input element group (x11 to x301), the value of each first output sensitivity (g11, 2 to g301, 2), and the output sensitivity for each first multiplexing The value of the first intermediate variable (x11, 2 to x301, 2) calculated by the first multiple desensitization including integration with the value (g11, 2, 8 to g301, 2, 8) is input. The value of the output variable calculated based on the intermediate element group (Nb), the values (x11,2 to x301,2) of the intermediate elements of the first intermediate element group, and the values of the coupling loads (ωγij1,2) A classification information estimation means (C20) for estimating classification information based on the output element group (Nc) to which (yiγ) is inputted, the correspondence information (T) stored in advance and the value (yiγ) of the output variable； Less by the classification estimation system (S) provided with the classification information display means (C21) Estimating the classification information including the operation intention of the subject in 習量.入力素子群（Ｎａ）と、第１入力素子群の各入力素子の値（ｘ１１～ｘ３０１）と各第１出力感度の値（ｇ１１，２～ｇ３０１，２）と各第１多重用出力感度の値（ｇ１１，２，８～ｇ３０１，２，８）との積算を含む第１の多重不感化がなされて演算された第１中間変数の値（ｘ１１，２～ｘ３０１，２）が入力される中間素子群（Ｎｂ）と、第１中間素子群の各中間素子の値（ｘ１１，２～ｘ３０１，２）と各結合荷重の値（ωγｉｊ１，２）とに基づいて演算された出力変数の値（ｙｉγ）が入力される出力素子群（Ｎｃ）と、予め記憶された対応関係情報（Ｔ）と出力変数の値（ｙｉγ）とに基づいて分類情報を推定する分類情報推定手段（Ｃ２０）と、分類情報表示手段（Ｃ２１）とを備えた分類推定システム（Ｓ）により、少ない学習量で被検体の動作意思を含む分類情報を推定する。
