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論文紹介:Relaxed Softmax for PU Learning

Hayato Maki
October 05, 2019

論文紹介:Relaxed Softmax for PU Learning

Hayato Maki

October 05, 2019
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  1. $POUFYUVBM16-FBSOJOH 4 ʮϖΞʯʹͳΔ΋ͷΛ୳͢16-FBSOJOH  ਖ਼ྫͷϖΞ͚͕ͩ༩͑ΒΕΔ  ਖ਼ྫͱͯ͠༩͑ΒΕͳ͔ͬͨϖΞͷΫϥε͸ෆ໌ ֶश࣌ B@ C@

    B@ C@ B@O C@O B@ C@ B@ C@ ϖΞ̌ ϖΞ ϖΞO ਖ਼ྫ Ϋϥεෆ໌ ਪ࿦࣌ ೖྗ ީิ܈ ʁ ʁ ʁ ɾ ɾ ɾ ɾ ɾ ɾ ɾ ɾ ɾ
  2. ؔ࿈ݚڀ 6 ਖ਼ྫͷੜ੒෼෍͚ͩΛֶश͢Δ  ҟৗݕ஌ͳͲͰ࢖ΘΕ͍ͯΔΞϓϩʔν  ϥϯΩϯάͷUPQ/͚ͩʹڵຯ͕͋Δਪનʹ͸޲͔ͳ͍ ೳಈֶश  ஞ࣍తʹϥϕϧΛ͚͍ͭͯ͘

     0SBDMF ਅͷϥϕϧΛ෇͚ΒΕΔԿ ͔ ͕ඞཁɺਓؒͷΞϊςʔλʔͳͲ ϥϕϧ෇͖
 σʔλ Ϟσϧֶश ϥϕϧແ͠
 σʔλ 0SBDMF ೖྗ ద༻ αϯϓϦϯά ϥϕϧ෇༩
  3. ৚݅෇͖෼෍ͷ࠷໬ਪఆ 9 w J͕༩͑ΒΕͨ࣌ͷKͷ৚݅෇͖ܦݧ෼෍ ਖ਼ྫͷϖΞ ਖ਼ྫϖΞҎ֎ͷશͯͷ૊Έ߹Θͤ w ෛͷର਺໬౓ GVMMTPGUNBY ໰୊఺

    ͲͷJʹରͯ͠΋
 ֤K͸ಉ͡ස౓ ֬཰ Ͱෛྫͱͯ͠αϯϓϧ ͞ΕΔ ਅͷ৚݅෇͖෼෍ʹ JJEΛԾఆ w ϖΞͷू߹ɿ w JͱKͷϕΫτϧදݱͷ಺ੵɿ
  4. 3FMBYFE4PGUNBY 34 -PTT 12  ෛྫαϯϓϦϯά෼෍ɹɹʹ͍ͭͯɺଛࣦΛҎԼͷࣜͰఆٛ  'VMMTPGUNBY '4 ͱͷൺֱ

    ͢΂ͯͷKʹ͍ͭͯܭࢉ 2@J͕Ұ༷෼෍ͳΒɺ34͸'4ͷϞϯςΧϧϩۙࣅ 2@JͰαϯϓϧ͞ΕͨKͷू߹ 7 J K ʹ͍ͭͯܭࢉ
  5. αϯϓϦϯά ଛࣦ .-& 'VMM 4PGUNBY 44 1PQVMBSJUZ 4PGUNBY 64 6OJGPSN

    3FMBYFE4PGUNBY 6#4 #PUM[NBOO VOJGPSN 3FMBYFE4PGUNBY 14 1PQVMBSJUZ 3FMBYFE4PGUNBY 1#4 #PUM[NBOO QPQVMBSJUZ 3FMBYFE4PGUNBY #PUM[NBOOαϯϓϦϯάͷ༗ޮੑ͕֬ೝͰ͖Δ ࣮ݧɿਓ޻σʔλ 19 όοναΠζ
  6. ࣮ݧɿ/FYUJUFN1SFEJDUJPO w .PWJFMFOT ໿ສϨίʔυ  w /FUqJYʢ໿ສϨίʔυʣ w 8JLJQFEJB5FYU ࠷΋ϙϐϡϥʔͳສ୯ޠ

     w ̏୯ޠҎ಺ʹొ৔ͨ͠ΒϙδςΟϒͱΈͳ͢ 20 σʔλ ධՁࢦඪ w ໬౓ w .13 .FBO1FSDFOUJMF3BOL  w 1SFDJTJPOBU   
  7. ݁Ռɿ/FYUJUFN1SFEJDUJPO 21 αϯϓϦϯά ଛࣦ .-& 'VMM 4PGUNBY 44 1PQVMBSJUZ 4PGUNBY

    64 6OJGPSN 3FMBYFE4PGUNBY 6#4 #PUM[NBOO VOJGPSN 3FMBYFE4PGUNBY 14 1PQVMBSJUZ 3FMBYFE4PGUNBY 1#4 #PUM[NBOO QPQVMBSJUZ 3FMBYFE4PGUNBY