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間違いの訂正


原稿の3ページ目

\log \cosh(h)の前のMが脱落

Mの定義 -- full model の変数の個数

l_{MF}(\sigma^2,h)= -F_{MF} - \log \cosh(h) - \frac{N}{2} \log {2\sigma^2}

l_{MF}(\sigma^2,h)= -F_{MF} - M \log \cosh(h) - \frac{N}{2} \log {2\sigma^2}


原稿の3ページ目にアルゴリズムの説明として

{mi*}に適当な初期値を与えて、
{mi*}から{ai*}を求め、
{ai*}から{mi*}を求め、
収束するまで繰り返す

とありますが、この説明は間違いです。

実際には、(17)式でm_iを 1回 update したあとで、
(18)を解くというのを繰り返しています。方法の狙いや
最適化する式は同じですが、local optimaの様子などには
大きな違いが生じる可能性があるので訂正しておきます。


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