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Swift からword2vecを 使ってみる
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Yusuke Ito
May 26, 2017
Programming
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890
Swift からword2vecを 使ってみる
Yusuke Ito
May 26, 2017
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Transcript
$PQZSJHIU4IJSPZBHJ$PSQPSBUJPO"MMSJHIUTSFTFSWFE 4XJGU͔ΒXPSEWFDΛ ͬͯΈΔ ϦʔυΞʔΩςΫτ ҏ౻༞ี :VTVLF*UP !OPWJ@ നϠΪίʔϙϨʔγϣϯ 5PLZP4FSWFS4JEF4XJGU.FFUVQ
5PLZP݄ʙ
$PQZSJHIU4IJSPZBHJ$PSQPSBUJPO"MMSJHIUTSFTFSWFE 4FF63- • https://github.com/shiroyagicorp/swift-seeurl • ݩʑࣾϥΠϒϥϦΛެ։ • cURL(curlίϚϯυ), libcurlϕʔε •
ಉظॲཧ(RunLoopෆཁ) let result = try HTTPClient.sendRequest("GET", "https://google.com") print(result.statusCode, result.body) ϑΥϩʔΞοϓهࣄUSZ4XJGU5PLZPͱͦͷޙ IUUQBJBMTIJSPZBHJDPKQNZUSZTXJGUBOEGPMMPXVQ
$PQZSJHIU4IJSPZBHJ$PSQPSBUJPO"MMSJHIUTSFTFSWFE ϝϯςφϯε͍ͯ͠ΔϥΠϒ ϥϦ • novi/mysql-swift: MySQLΫϥΠΞϯτ (όΠϯσΟϯά) • novi/nkf-swift: Network
Kanji FilterͷόΠϯσΟϯά • novi/mecab-swift: MeCabܗଶૉղੳͷόΠϯσΟϯά • novi/i2c-swift: I2CόεϥΠϒϥϦ • shiroyagicorp/swift-seeurl: cURL(HTTPS)ΫϥΠΞϯτ
None
$PQZSJHIU4IJSPZBHJ$PSQPSBUJPO"MMSJHIUTSFTFSWFE OVNTX • https://github.com/sonsongithub/numsw • try! Swift TokyoͷϋοΧιϯͰ࡞ͬͨ • Pythonʹ͋ΔܭࢉϥΠϒϥϦ(numsw)ΛSwift
Ͱ͍͍ͨ • ࠓͨ·ʹϝϯςφϯε͍ͯ͠Δ
$PQZSJHIU4IJSPZBHJ$PSQPSBUJPO"MMSJHIUTSFTFSWFE XPSEWFD • 2013͘Β͍ʹެ։ • C࣮ • word2vecͷίϯηϓτ͜ͷล • https://deepage.net/bigdata/machine_learning/
2016/09/02/ word2vec_power_of_word_vector.html
$PQZSJHIU4IJSPZBHJ$PSQPSBUJPO"MMSJHIUTSFTFSWFE XPSEWFDͷιʔείʔυ • https://code.google.com/archive/p/word2vec/ • ͕ͩɺGoogle Codeऴྃʹ͍μϯϩʔυͰ͖ͳ͍ • https://github.com/svn2github/word2vec.git •
͜ͷลͷϛϥʔΛ͏ • make Ͱ࣮ߦϑΝΠϧΛϏϧυ • macOSͩͱmalloc.hϔομʔ͕ແ͍ͱ͍͏Τϥʔ͕ग़ΔͷͰɺͦͷߦ Λίϝϯτ͢Δ • demo-*.sh͔Β࢝·ΔγΣϧεΫϦϓτͰσϞΛ࣮ߦ
$PQZSJHIU4IJSPZBHJ$PSQPSBUJPO"MMSJHIUTSFTFSWFE XPSEWFDD • ςΩετϑΝΠϧΛೖྗͯ͠ɺτϨʔχϯάɺϞσ ϧΛग़ྗ • Cݴޠ 700ߦఔͷ CLI •
ϚϧνεϨουରԠ • ίʔυ͕ಡΈʹ͍͘
$PQZSJHIU4IJSPZBHJ$PSQPSBUJPO"MMSJHIUTSFTFSWFE EJTUBODFD • ϞσϧϑΝΠϧͱ୯ޠ(ෳ)Λೖྗͯ͠ɺίαΠϯ ྨࣅ(ίαΠϯڑ)Λܭࢉͯ͠ग़ྗ Enter word or sentence
(EXIT to break): cat dog Word Cosine distance ------------------------------------------------------------------------ goat 0.827205 cow 0.796463 bee 0.788516 blonde 0.784559 hamster 0.784402 ass 0.779677 rat 0.774975
$PQZSJHIU4IJSPZBHJ$PSQPSBUJPO"MMSJHIUTSFTFSWFE 4XJGU͔Β࣮ߦ͢Δʹ 1. .cͷιʔεΛSwift͔ΒݺͿ • ͍ͭͷCͷϥΠϒϥϦΛSwift͔ΒಡΈࠐΉํ๏ • ࠓճϥΠϒϥϦͰͳ͘ɺmain()ͷܗʹͳͬͯ ͍ΔͷͰɺϥούʔؔͳͲΛఆٛ 2.
͕ΜͬͯSwiftʹҠ২
$PQZSJHIU4IJSPZBHJ$PSQPSBUJPO"MMSJHIUTSFTFSWFE ϞσϧϑΝΠϧ • ୯ޠͷϦετ(char*)ͱ୯ޠΠϯσοΫε(Int) • ୯ޠΠϯσοΫεͱ୯ޠϕΫτϧ(Float) • σϞͩͱαΠζ͕30ϝΨόΠτ͋Δ m0
m1 m2 i0 the -0.455356 1.908487 1.365852 i1 of 0.266191 1.750760 0.486601 i2 and 0.889470 1.455499 0.380907 i3 one -2.213606 0.914580 -0.512441
$PQZSJHIU4IJSPZBHJ$PSQPSBUJPO"MMSJHIUTSFTFSWFE EJTUBODFDͷΔ͜ͱ • ϞσϧΛύʔεͯ͠ڊେͳ(30MBఔͷ)ϝϞϦ্ʹಡΈࠐΉ • ͋Β͔͡Ί୯ޠͱ୯ޠΠϯσοΫεʹ͚Δ • ୯ޠΠϯσοΫεͱ୯ޠϕΫτϧΛϝϞϦ্ʹಡΈࠐΉ • ༩͑ΒΕͨɺ୯ޠʹରͯ͠ɺ୯ޠϕΫτϧ͔ΒίαΠϯڑ
Λܭࢉͭͭ͠ɺڑ͕͍ۙͷΛιʔτͯ͠ग़ྗ(දࣔ) • https://ja.stackoverflow.com/questions/2001/word2vecͷ distanceͳͥߴʹಈ࡞͢Δͷ͔
$PQZSJHIU4IJSPZBHJ$PSQPSBUJPO"MMSJHIUTSFTFSWFE 4XJGUʹҠ২ • Ϟσϧ(୯ޠϕΫτϧ)ΛಡΈࠐΉϝϞϦۭؒ UnsafeMutablePointer<Float>.allocate(capacity:) Λ༻ • Swift3͔Βಋೖ͞ΕͨϙΠϯλͱϝϞϦۭؒΛ҆શʹޮతʹ ѻ͏Έ(݁ߏ͍͠) •
ૉΒ͍͠SwiftͷϙΠϯλܕͷղઆ: http://qiita.com/ omochimetaru/items/c95e0d36ae7f1b1a9052 • UnsafeRawPointer Migration: https://swift.org/migration- guide/se-0107-migrate.html
$PQZSJHIU4IJSPZBHJ$PSQPSBUJPO"MMSJHIUTSFTFSWFE ͬͨ͜ͱ • ୯ޠͱ୯ޠΠϯσοΫεͷରԠΛྻͰͳࣙ͘ॻʹมߋ • จࣈྻͷѻ͍ΛStringωΠςΟϒʹมߋ • ݩʑchar*strcmpͳͲͷCϨϕϧͩͬͨͷͰɺՄಡੑ ѻ͍͕େม •
(͓ͦΒ͘)ɺϢχίʔυͷରԠ͕Մೳ • (·͍ͩͬͯͳ͍͕)ɺιʔτपΓͷվળ
$PQZSJHIU4IJSPZBHJ$PSQPSBUJPO"MMSJHIUTSFTFSWFE ࠓճͷϦϙδτϦ • https://github.com/novi/word2vec-swift
$PQZSJHIU4IJSPZBHJ$PSQPSBUJPO"MMSJHIUTSFTFSWFE ·ͱΊ • C͔ΒͷҠ২ָ • ߏจ͍ۙ • ϙΠϯλपΓಉ͡Έ͕͑Δ • word2vecʹ͍ͭͯΑ͘ཧղͰ͖ͯΕ͞Βʹ༰қ
$PQZSJHIU4IJSPZBHJ$PSQPSBUJPO"MMSJHIUTSFTFSWFE • ࣍ճ: നϠΪͰӡ༻͍ͯ͠ΔαʔόʔαΠυSwift • ൃදऀืूʂτϐοΫͳΜͰOKʂ