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“Satisfaction with Failure” or “Unsatisfied Success” - “ݕࡧͷ੒ޭ”ͱ“Ϣʔβͷຬ଍”ͷؔ܎ - WEBΤϯδχΞษڧձ #10 Yuya Matsumura (@yu-ya4) 9 November 2018

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✓ Yuya Matsumura ✓ Software Engineer ✓ Wantedly, Inc. Recommendation Team ✓ Interested in Information Retrieval, Machine Learning Self-Introduction @yu-ya4 @yu__ya4

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✓ Webٕज़શൠʹؔ͢Δ࠷΋ݖҖͷ͋Δࠃࡍձٞ ✓ Google, Baidu, Amazon, facebook…. ͳͲͷ໊ͩͨΔεϙϯαʔ ✓࠾୒཰͸ WWW 2018 Ͱ 14.8% (171/1155) ✓ 2018 ೥͸ϑϥϯεͷϦϤϯ (Lyon) Ͱ։࠵ (࣍ճ͸αϯϑϥϯγεί) ✓ ݕࡧ΍ηΩϡϦςΟɼػցֶश͔Βࣾձ໰୊·Ͱ༷ʑͳτϐοΫ What is The Web Conference (WWW) ? 5IF8FC$POGFSFODFIUUQTXXXUIFXFCDPOGPSH

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✓ The Effect of Ad Blocking on User Engagement with the Web ✓ Robust Factorization Machines for User Response Prediction ✓ Did You Really Just Have a Heart Attack?: Towards Robust Detection of Personal Health Mentions in Social Media ✓ “Satisfaction with Failure” or “Unsatisfied Success”: Investigating the Relationship between Search Success and User Satisfaction Examples of sessions IUUQTXXXUIFXFCDPOGPSHSFTFBSDITFTTJPOTEFUBJMT

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✓ The Effect of Ad Blocking on User Engagement with the Web ✓ Robust Factorization Machines for User Response Prediction ✓ Did You Really Just Have a Heart Attack?: Towards Robust Detection of Personal Health Mentions in Social Media ✓ “Satisfaction with Failure” or “Unsatisfied Success”: Investigating the Relationship between Search Success and User Satisfaction ࠓ೔࿩͢͜ͱ IUUQTXXXUIFXFCDPOGPSHSFTFBSDITFTTJPOTEFUBJMT ˠ͜ͷ࿦จͷ಺༰ʹ͍ͭͯ؆୯ʹ͝঺հ

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✓ ֓ཁΛ͞Βͬͱ঺հ͠·͢ (ৄࡉͳ࣮ݧઃఆ౳ʹ͸ݴٴ͠·ͤΜ) ✓ ͋͘·Ͱɼࢲ͕࿦จΛಡΜ্ͩͰͷࢲͷղऍͰ͢ ✓ ؒҧͬͨ͜ͱݴͬͯͨΒ͝ΊΜͳ͍͞ ✓ ൃද಺༰ͱॴଐ૊৫ͱ͸ؔ܎͍͟͝·ͤΜ (ΦωΦ) Excuse

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“Satisfaction with Failure” or “Unsatisfied Success”: Investigating the Relationship between Search Success and User Satisfaction IUUQTEMBDNPSHBVUIPSJ[FDGN LFZ/ "VUIPST.FOHZBOH-JV :JRVO-JV +JBYJO.BP $IFOH-VP .JO;IBOHBOE4IBPQJOH.B 1SPDFFEJOH 8881SPDFFEJOHTPGUIF8PSME8JEF8FC$POGFSFODF 1BHFT

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എܠ Ϣʔβ͕ݕࡧΛߦͬͨࡍʹ ݕࡧߦҝʹ“ຬ଍”͔ͨ͠Ͳ͏͔ ͱ͍͏ͷ͸ͱͯ΋ॏཁͳࢦඪʂ Ϣʔβ͕“ຬ଍”͢ΔݕࡧΛ࣮ݱ͢Δͷ͕Ϣʔβʹͱ͍ͬͯ ͍͜ͱͷ͸ͣʂʂ Ͱ΋ɼϢʔβ͕“ຬ଍”͔ͨ͠Βͱ͍ͬͯ ݕࡧʹ“੒ޭ”͍ͯ͠Δͱ͸ݶΒͳ͍ʁ

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ͨͱ͑͹ தࠃਓͷֶੜ͕͋Δҩྍ৘ใΛݕࡧͨ͠ࡍʹɼ ޡͬͨةݥͳ৘ใؚ͕·ΕΔݕࡧ݁Ռʹຬ଍ͯ͠͠·͍ɼ ͦͷ݁Ռɼ๢͘ͳΔͱ͍͏ࣄނ͕ى͖ͨ தࠃਓͷֶੜ͸ɼݕࡧ݁Ռʹ“ຬ଍”͍͕ͯͨ͠ ݕࡧʹ͸“੒ޭ”͍ͯ͠ͳ͔ͬͨ

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Ϣʔβͷݕࡧ׆ಈʹ͓͚Δ “ݕࡧͷ੒ޭ”ͱ“Ϣʔβͷຬ଍౓” ͷؔ܎Λௐ΂ͯΈΑ͏ʂ ͜ͷ࿦จͰ΍͍ͬͯΔ͜ͱΛҰݴͰʂʂ

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✓ ݕࡧ׆ಈΛ௨ͯ͠ͷϢʔβͷओ؍తͳײ৘ʹΑͬ ͯଌΒΕΔ ✓ Ϣʔβʹͱͬͯͷಛఆͷ৘ใཁ͕݅ຬͨ͞Ε͍ͯ Δ͜ͱ “Ϣʔβͷຬ଍”ͱ͸

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✓ ݕࡧ׆ಈΛ௨ͯ͠ಘΒΕΔ٬؍తͳ݁ՌʹΑͬͯ ଌΒΕΔ ✓ ͋Β͔͡Ίఆٛ͞Εͨج४ʹΑͬͯଌఆ͞ΕΔ ͔ɺ֘౰υϝΠϯͷઐ໳ՈʹΑͬͯධՁ͞ΕΔ “ݕࡧͷ੒ޭ”ͱ͸

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✓ ඃݧऀΛूΊͯࢦఆͨ͠ݕࡧλεΫΛ͜ͳͯ͠΋Β͏ ✓ Ϣʔβ͕ݕࡧʹຬ଍͔ͨ͠ΛώΞϦϯά ✓ λεΫ͝ͱʹઐ໳ՈʹΑΔਖ਼ղΛ༻ҙɽϢʔβͷݕࡧ ͕੒ޭ͍ͯͨ͠ͷ͔Λݕূ ࣮ݧͯ͠ΈΑ͏ʂ

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Ϣʔβ͸ຬ଍͕ͨ͠ݕࡧʹ͸੒ޭ͍ͯ͠ͳ͍ྫ

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✓ શମͷ 28.3 % ͕ɼ“ຬ଍͍ͯ͠Δ͕ࣦഊ” ✓ શମͷ 12.0 % ͕ɼ“ຬ଍͍ͯ͠ͳ͍͕੒ޭ” ݁Ռ શମͷ 40.3 % ΋ͷׂ߹ʹ͓͍ͯɼ “Ϣʔβͷຬ଍”ͱ“ݕࡧͷ੒ޭ”͕Ұக͍ͯ͠ͳ͍ “Satisfaction with Failure” “Unsatisfied Success”

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✓ Readability: จॻͷಡΈ΍͢͞ ✓ Credibility: จॻͷ৴པੑ ผͷ؍఺͔Β“Ϣʔβͷຬ଍”ʹؔ܎͢ΔཁૉΛ෼ੳ ✓ Difficulty: λεΫͷ೉қ౓ ✓ Interest: λεΫͷ಺༰΁ͷڵຯ ✓ Knowledge: λεΫͷ಺༰΁ͷࣄલ஌ࣝ Subjective factors (Ϣʔβ͔ΒώΞϦϯά) Objective factors (ઐ໳ՈʹΑͬͯ൑ఆ)

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Objective factors ͱ Ϣʔβͷײ͡Δ༗༻౓

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ಡΈ΍͚͢Ε͹ίϯςϯπͷ٬؍తͳ৘ใྔʹؔΘΒͣɼ ༗༻Ͱ͋ΔͱϢʔβ͸൑அ͢Δ

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ίϯςϯπͷ৴པੑ͕ߴͯ͘΋௿ͯ͘΋ɼ ϢʔβʹΑΔ༗༻ੑͷ൑அʹ΄΅Өڹ͕ͳ͍

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Subjective factors ͱ Ϣʔβͷײ͡Δ༗༻౓

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ࣄલʹݕࡧλεΫ͕೉͍͠ͱײ͍ͯͨ͡Β ίϯςϯπ͕ྑͯ͘΋༗༻ੑ͕͋Δͱײ͡ʹ͍͘

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ݕࡧλεΫ΁ͷڵຯ͕େ͖͚Ε͹ ίϯςϯπ͕ྑ͍ͱ༗༻ੑ͕͋Δͱײ͡΍͍͢

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ݕࡧλεΫ΁ͷࣄલ஌͕ࣝେ͖͚Ε͹ ίϯςϯπ͕ѱ͍ͱ༗༻ੑ͕ͳ͍ͱײ͡΍͍͢

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✓ Ϣʔβͷݕࡧ׆ಈʹ͓͚Δ“ݕࡧͷ੒ޭ”ͱ“Ϣʔβͷຬ଍౓”ͷؔ܎ੑʹ ͍ͭͯௐࠪ͢Δ࿦จ ✓ ࣮ݧͰ͸શମͷ 40.3 % ΋͕ “Satisfaction with Failure” or “Unsatisfied Success” ✓ จॻͷಡΈ΍͢͞΍৴པੑͳͲͱɼϢʔβͷײ͡Δ༗༻౓ͷؔ܎΋෼ੳ ·ͱΊ

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✓ The Web Conference ͍ͬͯ͏ Web ܥͷΧϯϑΝϨϯε͕͋ΔΑʂ ✓ ঺հͨ͠Α͏ͳׂͱಡΈ΍͍͢࿦จ΋౤ߘ͞ΕͯΔΑʂ ✓ ීஈͷۀ຿ʹ׆͔ͤΔ͔΋ʂʁ ✓ Έͳ͞Μ΋ੋඇڵຯΛ͍͚࣋ͬͯͨͩΕ͹ʂ ✓ ๻΋࠷ۙ͋·ΓಡΊͯͳ͍ͷͰਫ਼ਐ͠·͢ ఻͔͑ͨͬͨ͜ͱ