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論文紹介:Relaxed Softmax for PU Learning
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Hayato Maki
October 05, 2019
Research
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論文紹介:Relaxed Softmax for PU Learning
論文リンク:
https://dl.acm.org/citation.cfm?id=3347034
Hayato Maki
October 05, 2019
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Transcript
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ී௨ͷ̎Ϋϥεྨ 16-FBSOJOH ਖ਼ྫ ෛྫ ਖ਼ྫ ϥϕϧແ͠
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B@ C@ B@O C@O B@ C@ B@ C@ ϖΞ̌ ϖΞ ϖΞO ਖ਼ྫ Ϋϥεෆ໌ ਪ࣌ ೖྗ ީิ܈ ʁ ʁ ʁ ɾ ɾ ɾ ɾ ɾ ɾ ɾ ɾ ɾ
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ؔ࿈ݚڀ 6 ਖ਼ྫͷੜ͚ͩΛֶश͢Δ ҟৗݕͳͲͰΘΕ͍ͯΔΞϓϩʔν ϥϯΩϯάͷUPQ/͚ͩʹڵຯ͕͋Δਪનʹ͔ͳ͍ ೳಈֶश ஞ࣍తʹϥϕϧΛ͚͍ͭͯ͘
0SBDMF ਅͷϥϕϧΛ͚ΒΕΔԿ ͔ ͕ඞཁɺਓؒͷΞϊςʔλʔͳͲ ϥϕϧ͖ σʔλ Ϟσϧֶश ϥϕϧແ͠ σʔλ 0SBDMF ೖྗ ద༻ αϯϓϦϯά ϥϕϧ༩
ຊݚڀͷߩݙ 7 $POUFYUVBM16-FBSOJOHʹ͍ͭͯɺ ৽͍͠ଛࣦؔͱෛྫαϯϓϦϯάͷ ํ๏ΛఏҊ
͖݅ͷ࠷ਪఆ 8 w J͕༩͑ΒΕͨ࣌ͷKͷ͖݅ܦݧ ਖ਼ྫͷϖΞ ਖ਼ྫϖΞҎ֎ͷશͯͷΈ߹Θͤ w ෛͷର GVMMTPGUNBY w
ϖΞͷू߹ɿ w JͱKͷϕΫτϧදݱͷੵɿ
͖݅ͷ࠷ਪఆ 9 w J͕༩͑ΒΕͨ࣌ͷKͷ͖݅ܦݧ ਖ਼ྫͷϖΞ ਖ਼ྫϖΞҎ֎ͷશͯͷΈ߹Θͤ w ෛͷର GVMMTPGUNBY
ͲͷJʹରͯ͠ ֤Kಉ͡ස ֬ Ͱෛྫͱͯ͠αϯϓϧ ͞ΕΔ ਅͷ͖݅ʹ JJEΛԾఆ w ϖΞͷू߹ɿ w JͱKͷϕΫτϧදݱͷੵɿ
ఏҊ
3FMBYFE4PGUNBY 34 -PTT 11 ෛྫαϯϓϦϯάɹɹʹ͍ͭͯɺଛࣦΛҎԼͷࣜͰఆٛ 'VMMTPGUNBY '4 ͱͷൺֱ
3FMBYFE4PGUNBY 34 -PTT 12 ෛྫαϯϓϦϯάɹɹʹ͍ͭͯɺଛࣦΛҎԼͷࣜͰఆٛ 'VMMTPGUNBY '4 ͱͷൺֱ
ͯ͢ͷKʹ͍ͭͯܭࢉ 2@J͕Ұ༷ͳΒɺ34'4ͷϞϯςΧϧϩۙࣅ 2@JͰαϯϓϧ͞ΕͨKͷू߹ 7 J K ʹ͍ͭͯܭࢉ
ੵΛߟྀͨ͠ෛྫαϯϓϦϯά 13 3FMBYFETPGUNBYΛඍ /VNCFSPGOFHBUJWFTBNQMFTˠ♾ ੵͷFYQΛ2@JͰॏΈ͚ ͨ͠ϘϧπϚϯ
ϘϧπϚϯෛྫαϯϓϦϯά 14 ෛྫʹͳΓ͢͞ʢOFHBUJWJUZʣͷࣄલࣝΛදݱ 5Λௐ͢Δ͜ͱͰෛྫαϯϓϦϯάͷੑ࣭Λௐ͢Δ ɿEFHFSBDZEJTUSJCVUJPO ॖୀ 5ɿԹύϥϝʔλ
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Ϟσϧʹͱͬͯ༰қʹࣝผՄೳɻใྔ͕গͳ͍ ϘϧπϚϯͷԹύϥϝλͰௐ
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࣮ݧ
࣮ݧɿਓσʔλ ࠞ߹ਖ਼ن1@JͰσʔλΛੜ ਅͷͱਪఆ͞Εͨͷ,-μΠόʔδΣϯεͰධՁ ෛྫͷαϯϓϦϯάʹઃఆ ϘϧπϚϯͷઃఆ ܇࿅
ςετ ܇࿅ ςετ ܇࿅σʔλສɺόοναΠζΛมԽ όοναΠζɺ܇࿅σʔλΛมԽ 18
αϯϓϦϯά ଛࣦ .-& 'VMM 4PGUNBY 44 1PQVMBSJUZ 4PGUNBY 64 6OJGPSN
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࣮ݧɿ/FYUJUFN1SFEJDUJPO w .PWJFMFOT ສϨίʔυ w /FUqJYʢສϨίʔυʣ w 8JLJQFEJB5FYU ࠷ϙϐϡϥʔͳສ୯ޠ
w ̏୯ޠҎʹొͨ͠ΒϙδςΟϒͱΈͳ͢ 20 σʔλ ධՁࢦඪ w w .13 .FBO1FSDFOUJMF3BOL w 1SFDJTJPOBU
݁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
·ͱΊ 22 $POUFYUVBM16-FBSOJOHʹ͍ͭͯɺ3FMBYFE4PGUNBYଛࣦͱ ϘϧπϚϯෛྫαϯϓϦϯάΛఏҊ ਓσʔλɺ/FYUJUFNQSFEJDUJPOͰ༗ޮੑΛ֬ೝ Թύϥϝʔλͷಈతௐ
$//ɺ3//ͳͲʹର͢ΔదԠ ܭࢉྔ͕ଟͦ͏ʁ จλΠτϧͷ͚͔͕͍ͭͨͬͨͳ͍ 'VUVSF8PSL ॴײ