【WebDBフォーラム2017】Sansanにおける名刺画像データ化フローと機械学習の取り組み

by vaaaaanquish

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4BOTBOʹ͓͚Δ ໊ࢗը૾σʔλԽϑϩʔͱ ػցֶशͷऔΓ૊Έ 4BOTBOגࣜձࣾ 3%3FTFBSDIFSՏ߹ढ़య

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2 ࣗݾ঺հ 4BOTBOͱ໊ࢗͷσʔλԽ 4BOTBOגࣜձࣾʹ͍ͭͯ 4BOTBOͷ໊ࢗσʔλԽϑϩʔ ػցֶशͷऔΓ૊Έ ը૾ೝࣝʹ͓͚Δػցֶश ଞػցֶशϓϩδΣΫτ ػցֶशϓϩδΣΫτͷεεϝ ͓ΘΓʹ "HFOEB

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3 ࣗݾ঺հ 4BOTBOגࣜձࣾ %40$3% ৽ଔೖࣾ೥ ߴઐ େֶӃ ػցֶश͕޷͖ ,BHHMF !WBBBBBORVJTI

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4BOTBOͱ໊ࢗͷσʔλԽ 4

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4BOTBOגࣜձࣾͱ͸ 5 ๏ਓ޲໊͚ࢗ؅ཧαʔϏε ݸਓ޲໊͚ࢗΞϓϦ εΩϟφɺΞϓϦܦ༝Ͱ໊ࢗը૾ͷσʔλԽͱ؅ཧ ࣾҎ্ͷاۀಋೖɺ೥ؒ໿ԯຕͷ໊ࢗΛॲཧ ਓखʹΑΔਖ਼֬ͳσʔλԽ

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̎ͭͷϓϩμΫτ 6 ࣾһͷ໊ࢗަ׵Λձࣾͷࢿ࢈ʹ ࣾ಺ͷ໊ࢗΛҰׅ؅ཧ ʮྡͷσεΫͷ˓˓͞Μ͕࣮͸औҾઌͷ໾һͱ஌Γ߹͍ͩͬͨʯʮૣ͘ݴͬͯΑʙʯ ໊ࢗަ׵Λਓͷܨ͕Γͱଊ͑اۀͷࢿ࢈ʹ

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̎ͭͷϓϩμΫτ 7 ݸਓ޲໊͚ࢗ4/4ΞϓϦ ݸਓ޲͚ͷ໊ࢗΛى఺ʹͨ͠4/4ΞϓϦ ϑΟʔυ΍ϝοηʔδͱ͍ͬͨػೳʹՃ໊͑ࢗަ׵ػೳɺاۀϖʔδ &JHIUͰϏδωεͷ΍ΓऔΓ͕׬݁

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8 ໊ࢗσʔλԽϑϩʔ ໨ࢹΦϖϨʔλ Ϋϥ΢υΦϖϨʔλ Ξ΢τιʔγϯά ໨ࢹΦϖϨʔλ ͦΕͧΕ3%͕"1*ఏڙ ϚΠΫϩαʔϏε

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0$3 ࣾ಺֎ ΦϖϨʔλʹΑΔखೖྗ ࣙॻͷࢀর ෳ਺ͷ৚݅ʹΑΔϚονϯά จࣈɺإɺϩΰ౳ͷݕग़ ߲໨಺༰ͷਪఆ  ࣗવݴޠॲཧ ػցֶश ΦϖϨʔλʹΑΔ໨ࢹ ࣙॻͷࢀরɺϚονϯά ۣܗݕग़ Τοδݕग़ ϗϫΠτχϯά ը૾֦େ ௒ղ૾ XBJGVY 9 ໊ࢗσʔλԽͷཁૉٕज़

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10 4BOTBOͷ໊ࢗσʔλԽ ਓɺٕज़ɺσʔλϕʔεʹΑΔ໊ࢗͷσʔλԽ

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ػցֶशͷऔΓ૊Έ 11

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12 ػցֶशϓϩδΣΫτͷ঺հ %FFQ)FBU.BQ.PEFM  %FFQ-FBSOJOHʹΑΔը૾෼ׂͷֶश  %FFQ-BOH%FUFDUPS.PEFM  ໊ࢗը૾͔Βͷݴޠ൑ఆ  σʔλԽγεςϜͷ࠷దԽ  *OTQFDUPS  ༳ΕͷٵऩͱσʔλϕʔεͷΫϨϯδϯά  ໊دͤνΣοΫ  ϛεݕ஌

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13 %FFQ)FBU.BQ.PEFM ࢀߟz1ZSBNJE4DFOF1BSTJOH/FUXPSL )FOHTIVBOH;IBP +JBOQJOH4IJ 9JBPKVBO2J 9JBPHBOH8BOH +JBZB+JB *&&&$POGFSFODFPO$PNQVUFS7JTJPOBOE1BUUFSO3FDPHOJUJPO $713 IUUQTIT[IBPHJUIVCJPQSPKFDUTQTQOFU %FFQ-FBSOJOHϞσϧ ෼ׂͷ݁ՌΛֶशͤ͞Δ ͭͷϞσϧ  ໊ࢗ಺ͷ߲໨ۣܗͷਪఆ  ߲໨໊ͷਪఆ Ϟσϧ୯ମͰ΋ͷਫ਼౓  طଘͷγεςϜͱ૊Έ߹Θͤ

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%FFQ-BOH%FUFDUPS.PEFM z+BQBOFTFz ࢀߟz%FFQ3FTJEVBM-FBSOJOHGPS*NBHF3FDPHOJUJPO ,BJNJOH)F 9JBOHZV;IBOH 4IBPRJOH3FO +JBO4VO IUUQTBSYJWPSHBCT ໊͔ࢗΒݴޠΛ൑ఆ  ೔ຊޠɺӳޠɺதࠃޠɺ೔ຊޠӳޠɺʜ  ΦϖϨʔλೖྗ৘ใͱϑΟʔυόοΫ͔Βֶश σʔλԽϑϩʔͷ࠷దԽ ɹͦͷݴޠͷυϝΠϯΛ࣋ͭΦϖϨʔλ΁ͷৼΓ෼͚ ɹ0$3౳΁ͷࣄલ৘ใ΁ ֶशγεςϜΛճ͍ͯ͘͠ࣄͰଟݴޠԽʹରԠ

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15 ଞػցֶशͷऔΓ૊Έ σʔλԽγεςϜͷ࠷దԽ - *OTQFDUPSνΣοΫ ‣ΦϖϨʔλͷೖྗͷϛεΛֶश ࣗવݴޠॲཧ ػցֶश ‣ܾఆ໦ "VUP&ODPEFSͳͲʮ΋͔ͯ͠͠ɿʯ͕ՄೳͳϞσϧ ‣ਫ਼౓Λ୲อ͠ͳ͕ΒίετΛ࠷దԽ - औΓࠐΈຕ਺ͷ༧ଌ ‣աڈͷձࣾͷऔΓࠐΈ΍ن໛ɺӦۀൺ཰ ‣#PPTUJOHʹΑΔઢܗճؼ HCMJOFS ‣ΦϖϨʔλௐ੔ɺΩϟϯϖʔϯ΍ަবࡐྉ  ༳ΕٵऩͱσʔλϕʔεΫϨϯδϯά - ໊دͤνΣοΫ ‣اۀ৘ใɺ໊ࢗऔΓࠐΈຕ਺ɺਓ໊ͷ௝͠͞౳Λಛ௃ྔԽ ‣ܾఆ໦ͳͲઆ໌ม਺͕෼͔Γ΍͍͢ϞσϧͰ࡞ΓˠΦϖϨʔλ΁ - ϛεݕ஌ ‣σʔλϕʔεͷೖྗ࣌ظ౳ͷ৘ใΛݩʹϛεݕ஌ ‣ݹ͍γεςϜʹΑΔσʔλΛΫϨϯδϯά 4POTPOגࣜձࣾ ʔʔʔ

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ػցֶशϓϩδΣΫτͷεεϝ 16

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17 4BOTBOʹ͓͚Δػցֶशج൫ طଘͷߴਫ਼౓σʔλԽՄೳͳγεςϜʹ৐ͤΔ طଘج൫ͱ૊Έ߹Θͤɺൺֱ zػցֶशཁΒͳ͍Ͷzͱ͍͏൑அ΋༰қʹ  ػցֶशϓϩδΣΫτ͸ܧଓతͳ1%$"͕ඞਢ  ղੳ݁ՌΛཷΊࠐΉͨΊͷผͷ؀ڥ σʔλϕʔεج൫ͱ෼ੳج൫ ࠷దͳαʔϏεબ୒ͱػցֶशΠϯϑϥ  3%಺ʹΞʔΩςΫτ5FBN (JU΍%PDLFSͷར༻  3%಺ͷڞ௨Խ͞Εͨ෼ੳج൫

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18 ػցֶश༻ͷσʔλ ೖྗ ೖྗ ෼ׂνΣοΫ ࣾ಺ͰͷਓʹΑΔσʔλνΣοΫ    ʼػցֶश༻ͷUSBJO UFTUσʔλνΣοΫ  ɹػցֶशΤϯδχΞͷ࢓ࣄͷେ൒Λ઎ΊΔσʔλ࡞Γ΋෼ࢄ  ɹσʔλ͸ੜϞϊ  σʔλΛ࡞ΔਓɺλΠϛϯάʹΑͬͯ൑அج४͕มԽͯ͠͠·͏  ɹɹࣾ಺ͷίϛϡχέʔγϣϯͰυϝΠϯΛڞ༗Ͱ͖Δ  ɹɹλεΫ΍σʔλɺλΠϛϯάʹԠͨ͡ܗࣜ  ɹϓϩδΣΫτʹΑͬͯ਺ेສʙ਺ඦສͷֶशσʔλ    ʼ%#಺ͷաڈσʔλνΣοΫ  ɹ(BSCBHFJO (BSCBHFPVU  ɹաڈͷσʔλ͕៉ྷʹͳ͍ͬͯ͘ࣄͰ  ɹػցֶशϓϩδΣΫτͷεϐʔυ͸ܶతʹ޲্͢Δ * Garbage in, Garbage Out: How Purportedly Great Machine Learning Models Can Be Screwed Up By Bad Data [2017, Black Hat USA, Hillary Sanders] ໨ࢹνΣοΫ

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ਓɺٕज़ɺσʔλϕʔεʹΑΔ໊ࢗͷσʔλԽ 19 ػցֶशϓϩδΣΫτͷαΠΫϧ ը૾ೝࣝ ػցֶश AWS ໨ࢹνΣοΫ ֶशσʔλ࡞Γ ΫϨϯδϯά ࣙॻ Ϛονϯά

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20 ͦͯ͠σʔλαΠΤϯε΁ ໾৬มԽݕ஌ɺϦίϝϯυ اۀͷΫϥελϦϯάɺۀछ ਓɺձࣾͷΩʔϫʔυͷநग़ ޿ࠂ഑৴γεςϜͷ࠷దԽ ϑΟʔυͷ࠷దԽ ࣍ձ͏΂͖ਓɺձࣾɺ෦ॺͷϦίϝϯυ ΩʔϚϯͷϦίϝϯυ  ɹɹɹɹɹɹɹɹɹɹɹʜ FUD

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͓ΘΓʹ 21

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22 4BOTBOͱ໊ࢗͷσʔλԽͱػցֶशͷऔΓ૊ΈΛૡ͍ఠΜͰ঺հ ػցֶशΛϓϩδΣΫτͰ࢖͏ͨΊʹඞཁͳ΋ͷ  ५୔ͳ؀ڥ  େྔͷ៉ྷͳσʔλ  ૬Ԡͷج൫ٕज़ͱ%#ͱΠϯϑϥ  ࣾ಺ͷཧղ ༏लͳ3%ϝϯόʔɺڞಉݚڀઌΛืूத  ɹ५୔ͳσʔλɺ؀ڥɺֶձࢀՃ΍ొஃɺ,BHHMF෦ɺษڧձʜFUD  ɹ,BHHMF(SBOE.BTUFS .BTUFS 0QFO$74IBSQ࡞ऀͳͲ໊͕ࡏ੶ ͓ΘΓʹ

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