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ディープラーニングでコーデを提案/FashionTechMeetup#4
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tn1031
June 07, 2017
Technology
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ディープラーニングでコーデを提案/FashionTechMeetup#4
tn1031
June 07, 2017
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Transcript
σΟʔϓϥʔχϯάͰίʔσΛఏҊ !UO7"4*-: JOD 'BTIJPO5FDI.FFUVQ
ίʔσΛఏҊ͢Δ w ϑΝογϣϯͰѻ͏ը૾ w Γ͍ͨ͜ͱ ࣮ݱํ๏ w $//Λ༻͍ͨಛநग़ w εφοϓը૾ͷදݱ
w ݕࡧͷΈ ࣮ݧ ·ͱΊ "HFOEB
w தଜຏ!UO w σʔλαΠΤϯςΟετ w લ৬ɿ4* w ࣄɿػցֶशɾը૾ೝࣝ w ΞϧΰϦζϜͷ։ൃ
ࣗݾհ !UO
3&4&"3$)ˍ%&7&-01.&/5 ࣗࣾͰഓͬͨ։ൃٕज़ͷఏڙ ɾΞϓϦ։ൃ ɾΫϩʔϦϯά ɾػցֶश ɾσΟʔϓϥʔχϯά ɾը૾ղੳ
։ൃٕͨ͠ज़ Ϟσϧண༻ը૾ εφοϓը૾ ΛΫΤϦͱͯ͠ը૾Λݕࡧ͢Δ ΫΤϦը૾ ݕग़ ݕࡧ
ίʔσΛఏҊ͢Δ w ϑΝογϣϯͰѻ͏ը૾ w Γ͍ͨ͜ͱ ࣮ݱํ๏ w $//Λ༻͍ͨಛநग़ w εφοϓը૾ͷදݱ
w ݕࡧͷΈ ࣮ݧ ·ͱΊ "HFOEB
ϑΝογϣϯͰѻ͏ը૾ ը૾ͱεφοϓը૾ͱ͍͏छྨͷυϝΠϯ͕ଘࡏ͢Δ w ஔ͖ࡱΓϚωΩϯͷը૾͕ଟ͍ w ਖ਼໘͔ΒΈͨ࣌ͷσβΠϯ͕Θ͔Γ͍͢ w ண༻Πϝʔδ͕༙͖ʹ͍͘
ը ૾ ε φ ο ϓ ը ૾ ը૾ ಛ w Ϟσϧ͕ண༻ͨ͠ը૾ w ண༻࣌ͷҹίʔσΟωʔτͷࢀߟʹͳΔ w ϙʔζഎܠʹΛڽΒ͍ͯ͠Δ
Γ͍ͨ͜ͱ ͷண༻ΠϝʔδΛఏڙ͍ͨ͠ w ண༻Πϝʔδͷఏڙར༻γʔϯͷى w ίʔσΟωʔτͷఏҊ ৄࡉΛΈ͍ͯΔϢʔβʔʹͱࣅ͍ͯΔΞΠςϜΛ ͬͨεφοϓը૾Λදࣔ͢Δ
ίʔσΛఏҊ͢Δ w ϑΝογϣϯͰѻ͏ը૾ w Γ͍ͨ͜ͱ ࣮ݱํ๏ w $//Λ༻͍ͨಛநग़ w εφοϓը૾ͷදݱ
w ݕࡧͷΈ ࣮ݧ ·ͱΊ "HFOEB
$//Λ༻͍ͨಛநग़ ΞΠςϜͷಛΛ$//ͰϕΫτϧԽ͢Δ w ը૾͔ΒΞΠςϜͷಛΛநग़ͯ͠ϕΫτϧԽ͢Δ w ϕΫτϧಉ࢜ͷҐஔؔྨࣅͱΈͳ͢͜ͱ͕Ͱ͖Δ ಛྔۭؒ f(x) ͍ۙ(ࣅ͍ͯΔ)
ԕ͍(ࣅ͍ͯͳ͍) ը૾σʔλ ॎԣ480pixelͷ߹ɺ࣍ݩ 480x480x3 = 691200 dim ը૾ಛྔ ը૾σʔλΛදݱ͢Δ࣍ͷϕΫτϧ ѹॖ ؔʹCNNΛ࠾༻
$//Λ༻͍ͨಛநग़ ͷྨࣅͷؔUSJQMFUMPTTͰධՁ͢Δ Anchor Positive Negative CNN CNN CNN w
ը૾ͷυϝΠϯʹؔͳ͘ڞ௨ͷωοτϫʔΫΛ͏ w ࣅ͍ͯΔը૾ಉ࢜ۙͮ͘Α͏ʹʗࣅ͍ͯͳ͍ը૾ಉ࢜ԕ͔͟ΔΑ͏ʹ Embedding margin ֶश Embedding
εφοϓը૾ͷදݱ εφοϓը૾ʹؚ·ΕΔΞΠςϜͷಛྔΛΧςΰϦຖʹܭࢉ͢Δ w εφοϓը૾͔Β֤ΧςΰϦͷΞΠςϜΛݕग़ͯ͠ύʔε w ͦΕͧΕͷಛྔΛ·ͱΊͯεφοϓը૾ͷදݱͱ͢Δ UPQTUPQTྖҬ͔Βநग़ͨ͠ಛྔ QBOUTQBOUTྖҬ͔Βநग़ͨ͠ಛྔ CBHTCBHTྖҬ͔Βநग़ͨ͠ಛྔ
GPPUXFBSGPPUXFBSྖҬ͔Βநग़ͨ͠ಛྔ \ εφοϓը૾ ݕग़ εφοϓը૾ͷදݱ
ݕࡧͷΈ छྨͷϞδϡʔϧ͔ΒͳΔ w ݕग़Ϟδϡʔϧεφοϓը૾Λύʔεͯ͠ಛྔΛܭࢉ͓ͯ͘͠ w ݕࡧϞδϡʔϧը૾͔ΒύʔεࡁΈεφοϓը૾Λݕࡧ͢Δ ݕग़ ݕࡧ εφοϓը૾
ΞΠςϜྖҬ ݕग़ Ϟδϡʔϧ ݕࡧ Ϟδϡʔϧ IUUQBSYJWPSHBCT
ίʔσΛఏҊ͢Δ w ϑΝογϣϯͰѻ͏ը૾ w Γ͍ͨ͜ͱ ࣮ݱํ๏ w $//Λ༻͍ͨಛநग़ w εφοϓը૾ͷදݱ
w ݕࡧͷΈ ࣮ݧ ·ͱΊ "HFOEB
࣮ݧ݁Ռ1/2 ΫΤϦը૾ ݕࡧ݁Ռ
࣮ݧ݁Ռ2/2 ΫΤϦը૾ ݕࡧ݁Ռ
ίʔσΛఏҊ͢Δ w ϑΝογϣϯͰѻ͏ը૾ w Γ͍ͨ͜ͱ ࣮ݱํ๏ w $//Λ༻͍ͨಛநग़ w εφοϓը૾ͷදݱ
w ݕࡧͷΈ ࣮ݧ ·ͱΊ "HFOEB
w ը૾͔Βεφοϓը૾Λݕࡧ͢ΔΈΛఏҊ w ண༻Πϝʔδͷىʗར༻γʔϯͷى w ίʔσΟωʔτͷఏҊ w σΟʔϓϥʔχϯάΛ༻͍࣮ͯݱ w ݕग़ͱݕࡧͷΈ߹Θͤ
w ྨࣅͷධՁʹUSJQMFUMPTTΛ༻͍Δ w ༻ײ w େࡶͳಛଊ͑ΒΕ͍ͯΔ w ৎײͷΑ͏ʹࡉ͔͍ಛνϡʔχϯάޙॲཧͰٵऩ w ݕग़ͷਫ਼͕ݕࡧਫ਼ʹӨڹ͢Δ ·ͱΊ
͝ਗ਼ௌ͋Γ͕ͱ͏͍͟͝·ͨ͠