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動詞クエリの語間の関係性に基づくクエリマイニング
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kakubari
January 21, 2018
Technology
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動詞クエリの語間の関係性に基づくクエリマイニング
長岡技術科学大学
自然言語処理研究室
角張竜晴
kakubari
January 21, 2018
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Transcript
Ԭ ٕ ज़ Պ ֶ େ ֶ ࣗ વ ݴ ޠ ॲ ཧ ݚ ڀ ࣨ ֶ ෦ ̐ ֯ ு ཽ 動詞クエリの語間の関係性に基づくクエリマイニング 福地 大助,山本 岳洋,田中 克己 人工知能学会論文誌 32巻1号WII-J(2017年) ਤදจΑΓҾ༻ 1
概要 2 ʲఏҊʳ 8FCͷΫΤϦͰಈࢺΛؚΉ߹ͷݕࡧํ๏ΛఏҊ ʲ݁Ռʳ ఏҊख๏͕ैདྷͷݕࡧΤϯδϯΑΓ༗ҙੑΛࣔ͢ ͜ͱ͕Ͱ͖ͨ
はじめに 3 8FCݕࡧΤϯδϯͷٸͳൃల ˠਓʑ͕ݕࡧΤϯδϯΛ༻ͯ͠ใΛऔಘ ϥϯΩϯάख๏ FY1BHF3BOLΞϧΰϦζϜ MFBSOJOHUPSBOL
ˠ8FCݕࡧͷਫ਼େ্͖͘ ʲʳ બͨ͠ΫΤϦʹΑΓɺదͳݕࡧ݁Ռ͕ಘΒΕͳ͍ FYΫΤϦதʹಈࢺαม໊ࢺΛؚΉ߹
問題点 4 ݕࡧҙਤɿΓΜ͝ͷΛҭͯΔํ๏ΛΓ͍ͨ ΫΤϦɿlΓΜ͝࡞ΔΓํz ݕࡧ݁ՌɿʮΓΜ͝ΛͬͨϨγϐʯʹؔ͢Δϖʔδ ΫΤϦɿlΓΜ͝Λ࡞ΔΓํz ݕࡧ݁ՌɿಉҰͷϑϨʔζΛؚΜͰ͍Δϖʔδ͕ͳ͍
不適切な検索結果の要因 5 ΫΤϦͷΩʔϫʔυؒͷؔੑΛߟྀͰ͖ͳ͍ ಈࢺαม໊ࢺΛද͢Ωʔϫʔυʹରͯ͠ɺ తޠͱͯ͠ಇ͘߹ΛɺओޠखஈΛද͢म০ޠͱΈͳ͢ɻ ΫΤϦͷޠኮදݱ͕8FC্ͷݕࡧ݅ͱҟͳΔ ʮΓΜ͝ͷΛҭͯΔํ๏ʯΛΔͨΊʹɺ
8FC্ͷදݱͰ͋ΔʮΓΜ͝ͷഓʯΛ༻͍Δඞཁ͕͋Δɻ
提案手法 6 ʲख๏ʳ ΫΤϦʹؚ·ΕΔΩʔϫʔυؒͷؔੑΛਪఆ ݕࡧҙਤΛదʹදݱͨ͠ΩʔϫʔυΛൃݟ ީิͷΫΤϦΛੜ͠ఏࣔ
提案手法の流れ 7
提案手法の流れ 8 ϢʔβʹΑͬͯ༩͑ΒΕͨಈࢺΫΤϦRΛೖྗͱ͢Δɻ ೖྗ͞ΕͨಈࢺΫΤϦR\L L ʜ
LO ^ͱಈࢺΩʔ ϫʔυLW͔ΒతΩʔϫʔυLTΛநग़ ʢlΓΜ͝࡞ΔΓํzͷ߹ʣ ᶃΫΤϦlΓΜ͝࡞Δzɺl࡞ΔΓํzͷݕࡧ݁Ռจॻ ͷ୯ޠؒڑΛܭࢉ͢Δɻ ᶄ୯ޠؒڑ͕খ͍͞ํΛɺతΩʔϫʔυͱ͢Δɻ
提案手法の流れ 9 ਓखͰ४උ֤ͨ͠ॿࢺʹ͍ͭͯLTͱLWʹର͢Δ݁ ͼ͖ͭͷڧ͞Λܭࢉ͠ɺؔੑΛਪఆ ॿࢺू߹1\͕ Ͱ Λ^ͷதͰɺ
ಈࢺΩʔϫʔυٴͼతΩʔϫʔυͱ݁ͼ͖͕ͭ ࠷ڧ͍ॿࢺΛൃݟ͠ɺؔੑਪఆΛ࣮ݱ͢Δɻ <ۚࢠ> lΓΜ͝Λ࡞ΔzͷؔੑείΞʹ
提案手法の流れ 10 ਪఆ͞Εͨؔੑʹج͖ͮɺLWͷมީิू߹7\LW ʜ LW N ^Λ
ੜ ֨ϑϨʔϜ ژେֶ֨ϑϨʔϜ తΩʔϫʔυLTΛೖྗ͠ɺਪఆͨ͠ॿࢺQͷݕࡧ݁ՌΛநग़͠ɺ ༻ྫதͷಈࢺදݱͰස͕ߴ͍ॱʹ݅Λมީิͱ͢Δɻ 8FCݕࡧ݁Ռ ᶃΫΤϦlLTQzͰݕࡧɺݕࡧ݁ՌΛ݅औಘ ᶄݕࡧ݁Ռ͔ΒɺlLTQzͷޙʹݱΕΔಈ࡞Ωʔϫʔυ \LW ʜ LW N ^Λநग़ ᶅΫΤϦʮlLTQzLW ʜ LW N ʯͰ࠶ݕࡧ ᶆεςοϓᶄ͔ΒᶅΛ܁Γฦ͢
提案手法の流れ 11 ೖྗΫΤϦதͷLWΛ֤มީิLW J 㱨7ͱೖΕସ͑ͨ ͷΛR J ͱ͠ɺΫΤϦมީิू߹2\R
ʜ R N ^ Λੜ ֤ΫΤϦมީิR J 㱨2ʹରͯ͠ɺͦͷ༗༻ੑΛද ͢είΞT J Λܭࢉ ΫΤϦมީิू߹2ͷཁૉΛཁૉΛ༗༻ੑεί Ξͷ߱ॱʹϥϯΩϯάͯ͠ग़ྗ
提案手法の流れ 12 ʲ༗༻ੑείΞʳ తΩʔϫʔυͱಈ࡞Ωʔϫʔυީิͷڞى ॳظΫΤϦͷಈ࡞Ωʔϫʔυͱಈ࡞Ωʔϫʔυީ ิͷྨࣅ ॳظΫΤϦͷݕࡧ݁ՌͱΫΤϦमਖ਼ީิͰಘΒΕ
Δݕࡧ݁Ռͷඇྨࣅ Ҏ্ͷείΞͷੵΛ߱ॱʹ݅ग़ྗ͢Δɻ
実験 13 ख๏̍ తΩʔϫʔυͱಈ࡞ΩʔϫʔυީิͷڞىͷΈΛ༻͍ͯΫΤϦΛ ϥϯΩϯά͢Δख๏ɻ ख๏̎ ख๏̍ʹՃ͑ɺಈ࡞Ωʔϫʔυͱಈ࡞Ωʔϫʔυมީิͷྨࣅ ߟྀ͢Δख๏ɻ
ख๏̏ ख๏̎ʹՃ͑ɺॳظΫΤϦͷݕࡧ݁ՌͱฦؐޙͷΫΤϦͰಘΒΕΔݕ ࡧ݁ՌͷඇྨࣅΛߟྀ͢Δख๏ɻ ֨ϑϨʔϜख๏̏छྨɺ8FCݕࡧख๏̏छྨ ʹܭ̒छྨͷख๏
実験 14 ϕʔεϥΠϯख๏ (PPHMFͷݕࡧΤϯδϯ͕ఏࣔ͢ΔΫΤϦਪનΛ࠾༻ &YlΓΜ͝࡞ΔΓํzͱ͍͏ΫΤϦΛೖྗͨ͠߹
評価に用いたクエリの例 15
評価尺度 16 .33! ฏۉٯॱҐ ॱҐ݅ͷϥϯΩϯάͷதͰਖ਼ղΫΤϦͷॱҐΛߟྀ͠ ͨධՁई
$POUBJO! ্Ґ݅Ҏʹਖ਼ղΫΤϦΛݸͰؚΉධՁΫΤϦͷׂ ߹ΛධՁ "WF3FM/VN ਖ਼ղΫΤϦͰಘΒΕΔݕࡧ݁Ռ্Ґ݅தʹग़ݱ͢Δద ߹จॻͱͯ͠ܭࢉ
実験結果 17 • ̏ͭͷࢦඪΛΈ߹ΘͤΔ͜ͱͰɺΑΓߴ͍ਫ਼͕ಘΒΕ Δɻ • ֨ϑϨʔϜख๏ΑΓ8FCݕࡧख๏ͷํ͕ߴ͍ਫ਼Ͱਖ਼ղΫ ΤϦΛಘΒΕΔɻ • 8FCݕࡧͷख๏̏ϕʔεϥΠϯΑΓɺݕࡧҙਤΛద
ʹද͍ͯ͠Δͱߟ͑ΒΕΔɻ
実験結果 18