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20190624開催 bajjiベータ版リリース記念イベント

20190624開催 bajjiベータ版リリース記念イベント

bajji Inc.

June 24, 2019
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  1. Confidential ʮԿʯΛ͢Δ͔ͰࣾձมֵΛग़དྷ͖ͯͨ 5 Πϯλʔωοτֵ໋ 1995೥ʙ ࣌୅ Ϟϊ͕ ᷓΕͨ࣌୅ ՝୊ σδλϧԽ

    ͞Εͣෆศ खஈ εϞʔϧελʔ τ͔Βٸ֦େ Ϟσϧ ελʔτΞοϓ Ϟσϧ ॏཁͳ͜ͱ ʮͲ͜ʯ ʹ͍Δ͔ ʮԿʯΛ͢Δ͔
  2. Confidential ʮ୭ʯͱ͢Δ͔ɺݸਓͰࣾձΛมֵͰ͖Δ 6 2015೥ʙ ࣌୅ ͢΂͕ͯܨ͕Δ࣌୅ ՝୊ ৘ใ͕൙ཞ ϑΣΠΫͰᷓΕΔ खஈ

    ݸਓͰ׆ಈ Ϟσϧ ݸਓͱݸਓͷ ϚονϯάϞσϧ ॏཁͳ͜ͱ ʮͲ͜ʯ ʹ͍Δ͔ ʮԿʯΛ͢Δ͔ ʮ୭ʯͱ͢Δ͔ ৽ͨͳֵ໋
  3. CONFIDENTIAL 26 What have we got? Re-build social web ͭ·ΓɺࠓͷιʔγϟϧάϥϑΛ

    ϦσβΠϯ͢Δ ͦΖͦΖɺ୭͔͕facebookΛ ଧͪෛ͔࣌͢
  4. Confidential CBKKJ͸8FCͷߏ଄తͳ՝୊Λղܾ͢Δ 38 8FC CBKKJ ༑ୡ ϙϦγʔ͸ਓʹ Αͬͯ رগੑͰ ͋Δ͜ͱ͕

    ৴པੑΛ૿͢ ϑΥϩʔ ແ੍ݶʹϑΥϩʔ ͍͍Ͷ ແ੍ݶʹͰ͖Δ γΣΞɾ35 ແ੍ݶʹͰ͖Δ ੍໊࣮ ਓʹΑΔ ໊࣮ͷΈ ͔ͩΒϑΣΠΫ͕ᷓΕΔ ࣗવͱબͼൈ͔ΕΔ
  5. Confidential ϏδωεϞσϧશମ૾ 41 גࣜձࣾbajji ϦΞϧ bajjiʢ༗ݶʣ #MPDLDIBJO CBKKJείΞ 1SPPGPG.ZMJGF bajjiͷߪೖ

    Ϧϫʔυ ஫CBKKJ͸৴པͷؾ࣋ͪΛද͢ূͰ͋Γɺ༗Ձূ݊ɺલ෷ࣜࢧ෷खஈɺ๏ఆ௨՟ɺԾ૝௨՟·ͨ͸τʔΫϯͷ͍ͣΕͰ΋͋Γ·ͤΜɻͦͷͨΊऔҾ΋Ͱ͖·ͤΜɻ ·ͨɺड͚औͬͨCBKKJΛଞͷϢʔβʔʹૹΔ͜ͱ͸Ͱ͖·ͤΜɻͦͷͨΊɺຊن໿ʹج͍ͮͯຊαʔϏεʹ͓͍ͯར༻͢ΔҎ֎ʹ͸ɺҰ੾͝ར༻͍͚ͨͩ·ͤ ΜɻCBKKJΛଃͬͨʢ΋Βͬͨʣͱ͍͏ࣄ࣮͕ɺεϚʔτίϯτϥΫτͱͯ͠ϒϩοΫνΣʔϯʹࠁ·Ε·͢ɻ = = bajji score ϥϯΩϯά ʹԠͯ͡
  6. Confidential 43 bajji scoreʢ৴པείΞʣͷࢉग़ͷΞϧΰϦζϜ bsi = ∑ l we ij

    + ∑ m ˜ wim + ∑ n ˜ wni ˜ wb ij = ∑ k wb ijk ˜ we ij = λe ij ⋅ ∑ k we ijk wb ijk = μk ⋅ λb ij we ijk = min ( 1, δe ijk 30 ) λb ijk = exp (ln(CPy ⋅ 365 / δb ijk ) ⋅ (1 − γij ) ⋅ Δγ) − 1 λe ij = exp (ln(CPy ⋅ 365 / δe ij ) ⋅ (1 − γe) ⋅ Δγ) − 1 μk = { ln(priceb k ) (if 0 < priceb k AND bk is sent) priceb k (if 0 < priceb k AND bk is received) γij = { σij (1 / rsij ) (if CPd < δb k ) 0 (otherwise) δb ijk = ⌊ tcurrent − tb ijk 86400 ⌋ − CPd (if 0 < δb k ) 1 (otherwise) δe ij = ⌊ tcurrent − te ij 86400 ⌋ − CPd (if 0 < δe ij ) 1 (otherwise) δe ijk = ⌊ te ijk − te ij(k−1) 86400 ⌋ (if 1 < k) ⌊ tcurrent − te ijk 86400 ⌋ (otherwise) rsij = ̂ εij + B ⋅ ̂ kij δe ij σij (x) = tanh ( x x + 1 ) bsi : bajji score of Ai (Ai : accounti ) rsij : relationship score between Ai and Aj B : bajji constant (B = 8.8) CPy : bajji critical point year (CPy = B) CPd : bajji critical point date (CPd = 10B) Δγ : Aging correction (Δγ = B/1,000) ̂ uεi : Number of encounters between Ai and unique users ̂ ug i : Number of bajjis sent from Ai to unique users ̂ uri : Number of bajjis received by Ai from unique users ̂ εi : Number of encounters between Ai and users ̂ gi : Number of bajjis sent from Ai to users ̂ ri : Number of bajjis received by Ai from users ˜ wij : Sum of the value of the bajji sent from Ai to Aj wijk : Value of the bajjik sent from Ai to Aj priceb k : Price of the bajjik tcurrent : Current datetime [sec] ̂ εij : Number of encounter between Ai and Aj ̂ kij : Number of bajji send Ai to Aj tb k : Datetime of the bajjik sent and received [sec] te ij : Datetime of the last encounter between Ai and Aj [sec] γe : Aging rate of encounter (γe = 0.0) γij : Aging rate between Ai and Aj δb k : Difference of days since the bajjik sent and received between Ai and Aj δe ij : Difference of days since the last encountered between Ai and Aj
  7. Confidential CBKKJ͕࣮ݱ͢Δ৽ͨͳΠϯηϯςΟϒֵ໋ 47 ໰୊఺ bajji ௚઀ۚમΛ͋͛Ε͹ ྑ͍ͷͰ͸ʁ ཱ͕֯ͭ ग़͓͕ͨۚ͠ ࣾձʹ໾ཱͭ

    ଃΓ෺Λ͋͛ͨΒ ྑ͍ͷͰ͸ʁ ຊਓ͔ͨͪ͠஌Βͳ͍ ʢ΋͍ͬͨͳ͍ʣ ৴པ͕஝ੵ͞Ε͕ ڞ༗͞ΕΔ अຐʹͳΒͳ͍ଃΓ෺ ϑΝϯυ͕ ίϛϡχςΟʹ෼഑ʁ ઌߦ౤ࢿͷํ͕ ϦεΫେ ؤுͬͨਓʹؐݩ͞Ε ΔϑΣΞͳ࢓૊Έ
  8. Confidential ϦΞϧͱ༗ݶͳCBKKJɺͦΕʹԼࢧ͑͞Εͨιʔγϟϧ΢Σϒ 51 CBKKJಠࣗػೳ ʢϢχʔΫੑʣ ϑΣʔζ ϑΣʔζ ΤϯΧ΢ϯτ ✔ ✔

    ✔ CBKKJଃΔ ✔ ✔ ✔ CBKKJείΞ ✔ ✔ ✔ CBKKJετΞ ✔ ✔ ϝοηϯδϟʔ ✔ ✔ ౤ߘػೳ ✔ ϝσΟΞ ✔
  9. Confidential ୅දϓϩϑΟʔϧ 57 খྛ৻࿨ɺത࢜ʢ޻ֶʣ גࣜձࣾCBKKJ ϑΝ΢ϯμʔ݉୅දऔక໾ ུྺ େࡕେֶʹͯίϯϐϡʔλʔ޻ֶʹͯ೥ඈͼڃͰത࢜߸औಘ ໺ଜ૯߹ݚڀॴʹͯܦӦίϯαϧλϯτΛ೥ ೥άϦʔ΁స৬ɻάϦʔγϯΨϙʔϧ্ཱͪ͛

    ೥%JJYJΛγϯΨϙʔϧͰىۀ ೥:PVSXJpΛγϯΨϙʔϧͰىۀ ೥8"7&ίʔϫʔΩϯάεϖʔεΛόϦౡͰ૑ۀ ೥#VUBIHF4JOHBQPSFʢҿ৯ళʣΛ্ཱͪ͛ ೥-BTU3PPUTΛ౦ژͰىۀ ೥-BTU3PPUTΛΦ΢έΠ΢ΣΠϰʢʣͷࢠձࣾԽ ͦͯ͠ɺ೥݄ɺCBKKJΛ૑ۀ ೥ɹιϑτόϯΫΞΧσϛΞୈظτοϓ౰બʢਓதʣ ೥ɹ"TJBO&OUSFQSFOFVSબग़ʢ೔ຊਓ།Ұʣ ೥ɹϑΟϯςοΫαϛοτʢۚ༥ிɺ೔ܦ৽ฉओ࠵ʣ ɹɹɹɹɹ*#.CMVFIVCBXBSEड৆ ೥ɹ-BTU3PPUTʹͯ*$0࣮ࢪʢ೔ຊॳʣԯԁ௒ௐୡ ೥ɹੜΈग़ͨ͠DCBOͷ࣌Ձ૯ֹ͕ԯԁɻੈքҐ
  10. Confidential ૑ۀϝϯόʔʢओཁʣ 58 $00 $#00⒏DFS $50 ᖛా३ ౻ඌ੣ খ໺ࣉߤ໵ ෆಈ࢈Ӧۀɺর໌ػ

    ثϝʔΧʔɺϕϯν ϟʔاۀͷ૑ۀΛಘ ͯɺϒϩοΫνΣʔϯ ͷੈքʹ೥ʹɻ ෋࢜θϩοΫεʹͯ ݚڀ։ൃऀ͔Β ೥ΑΓϒϩοΫνΣʔ ϯʹ໨֮ΊΔ ֶੜ࣌୅͔Βىۀɻ ೥લɺখྛͱग़ձ͍ ϒϩοΫνΣʔϯͷੈ քʹ
  11. Confidential CBKKJͷྺ࢙ 59 ೥݄ ొه ೥݄೔ ྩ࿨ʹͳ͔ͬͯΒ࢝ಈ ݄೔ ϓϨεϦϦʔεᶃ CBKKJͷίϯηϓτʹ͍ͭͯ

    ݄೔ ϩʔϯνΠϕϯτ։࠵ͷࠂ஌ ݄೔ʢຊ೔ʣ ϕʔλϩʔϯν ݄ 7FSϩʔϯνʢ༧ఆʣ ݄ 7FSϩʔϯνʢ༧ఆʣ