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Simple_Unsupervised_Summarization_by_Contextual_Matching.pdf

MARUYAMA
December 08, 2019
130

 Simple_Unsupervised_Summarization_by_Contextual_Matching.pdf

MARUYAMA

December 08, 2019
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  1. $POUFYUVBM.BUDIJOH.PEFM ⾣ਖ਼֬ੑೖྗςΩετͱग़ྗ୯ޠͷίαΠϯྨࣅ౓ pcm (y|x) = N ∏ n=1 qcm (yn

    |y<n , x) ͱͨ͠ͱ͖  sω = maxj≥1 Sim(x1:j , ω) ͜͜Ͱ ग़ྗީิޠͱೖྗςΩετͱͷྨࣅ౓Λ ω x1:j qcm (y1 = ω|x) = softmax(s)
  2. $POUFYUVBM.BUDIJOH.PEFM ⾣ॲཧखॱ sω = maxj≥zn−1 Sim(x1:j , ω) ࣍ࣜΑΓ ྨࣅ౓Λܭࢉ

    zn−1 ʹରԠ෇͘ҐஔҎ͔߱͠ߟྀ͠ͳ͍ zn−1 yn−1 ୯ௐੑͷԾఆ ग़ྗ෼෍ ୯ޠҐஔΛܭࢉ qcm zn ͕ೖྗจॻ຤ඌͱͳΔ·Ͱ܁Γฦ͠ zn
  3. %PNBJO'MVFODZ.PEFM ⾣ྲྀெੑݴޠϞσϧ֬཰ pfm (y|x) = N ∏ n=1 ∑ ω′∈N(yn

    ) lm(ω′|y<n ) ϘϊϩΠ෼ׂͷ฼఺ʹ͸ ೖྗจॻ୯ޠΛ༻͍Δ ͷϘϩϊΠྖҬΛͱͨ͠ͱ͖ ݴޠϞσϧ֬཰͸  yn N(yn )
  4. &YQFSJNFOUBMTFUVQ ⾣.PEFM ⾣%BUBTFU ɾੜ੒ܕཁ໿&OHMJTI(JHBXPSEEBUB 3VTI   ɾநग़ܕཁ໿(PPHMFEBUBTFU 'JMJQQPWB 

     ɾGPSXBSEMBOHVBHFNPEFMPG&-.P ɾMBZFST-45.NPEFM pcm (y|x) pfm (y|x)