MARUYAMA
December 08, 2019
62

# Simple_Unsupervised_Summarization_by_Contextual_Matching.pdf

## MARUYAMA

December 08, 2019

## Transcript

5. ### .PEFM ⾣ཁ໿จ͸ɺ࣍ͷͭͷಛੑΛຬ͍ͨͯ͠Δඞཁ͕͋Δ ਖ਼֬ੑ 'BJUIGVMOFTT ݪจͷҙຯͱಉ༷ͷҙຯΛ࣋ͭ ྲྀெੑ 'MVFODZ จ๏తʹਖ਼͘͠ཧղͰ͖Δ P(y|x) ∝

pcm (y|x)pfm (y|x)λ ೖྗจॻ x ཁ໿จ y ਖ਼֬ੑ pcm (y|x) ྲྀெੑ pfm (y|x)
6. ### \$POUFYUVBM.BUDIJOH.PEFM ⾣ਖ਼֬ੑೖྗςΩετͱग़ྗ୯ޠͷίαΠϯྨࣅ౓ pcm (y|x) = N ∏ n=1 qcm (yn

|y<n , x) ͱͨ͠ͱ͖  sω = maxj≥1 Sim(x1:j , ω) ͜͜Ͱ ग़ྗީิޠͱೖྗςΩετͱͷྨࣅ౓Λ ω x1:j qcm (y1 = ω|x) = softmax(s)
7. ### \$POUFYUVBM.BUDIJOH.PEFM ⾣ॲཧखॱ sω = maxj≥zn−1 Sim(x1:j , ω) ࣍ࣜΑΓ ྨࣅ౓Λܭࢉ

zn−1 ʹରԠ෇͘ҐஔҎ͔߱͠ߟྀ͠ͳ͍ zn−1 yn−1 ୯ௐੑͷԾఆ ग़ྗ෼෍ ୯ޠҐஔΛܭࢉ qcm zn ͕ೖྗจॻ຤ඌͱͳΔ·Ͱ܁Γฦ͠ zn

9. ### %PNBJO'MVFODZ.PEFM ⾣ྲྀெੑݴޠϞσϧ֬཰ pfm (y|x) = N ∏ n=1 ∑ ω′∈N(yn

) lm(ω′|y<n ) ϘϊϩΠ෼ׂͷ฼఺ʹ͸ ೖྗจॻ୯ޠΛ༻͍Δ ͷϘϩϊΠྖҬΛͱͨ͠ͱ͖ ݴޠϞσϧ֬཰͸  yn N(yn )
10. ### .PEFM ⾣ཁ໿จ͸ɺ࣍ͷͭͷಛੑΛຬ͍ͨͯ͠Δඞཁ͕͋Δ ਖ਼֬ੑ 'BJUIGVMOFTT ݪจͷҙຯͱಉ༷ͷҙຯΛ࣋ͭ ྲྀெੑ 'MVFODZ จ๏తʹਖ਼͘͠ཧղͰ͖Δ P(y|x) ∝

pcm (y|x)pfm (y|x)λ ೖྗจॻ x ཁ໿จ y ਖ਼֬ੑ pcm (y|x) ྲྀெੑ pfm (y|x)
11. ### &YQFSJNFOUBMTFUVQ ⾣.PEFM ⾣%BUBTFU ɾੜ੒ܕཁ໿&OHMJTI(JHBXPSEEBUB 3VTI   ɾநग़ܕཁ໿(PPHMFEBUBTFU 'JMJQQPWB 

 ɾGPSXBSEMBOHVBHFNPEFMPG&-.P ɾMBZFST-45.NPEFM pcm (y|x) pfm (y|x)

15. None