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機械学習勉強会03 最急降下法/MLStudy03

機械学習勉強会03 最急降下法/MLStudy03

機械学習勉強会03 最急降下法

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hachiilcane

March 03, 2022
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  1. ύλʔϯ̍ w0 = 1, w1 = 3 f(x) = 1

    + 3x ED = 1 2 N X n=1 (1 + 3xn tn)2
  2. ύλʔϯ̎ w0 = 1, w1 = 4 f(x) = 1

    + 4x ED = 1 2 N X n=1 (1 + 4xn tn)2
  3. ʢࢀߟʣM࣍ͷଟ߲ࣜʹ ҰൠԽ͢Δͱ ্هͷϞσϧͰEDΛΑΓখ͘͢͞Δʹ͸ɺֶश཰ΛБͱͯ͠ ύϥϝʔλΛҎԼͷΑ͏ʹߋ৽͢Δ ED = 1 2 N X

    n=1 {f(xn) tn }2 wm := wm ⌘ @ED @wm f(x) = w0 + w1x + w2x2 + ... + wM xM = M X m=0 wmxm ۩ମతʹ͸ҎԼͷΑ͏ͳࣜʹͳΔ wm := wm ⌘ N X n=1 (f(xn) tn)xm n