ガチンコ比較！ LangChain vs LlamaIndex

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ΈͷΔΜ !NJOPSVO 0SBDMF$MPVE)BOHPVU$BGF ʮ--.ͷΤίγεςϜʯ Ψνϯίൺֱʂ -BOH$IBJO WT-MBNB*OEFY

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ΈͷΔΜ !NJOPSVO 0SBDMF$MPVE)BOHPVU$BGF ʮ--.ͷΤίγεςϜʯ Ψνϯίൺֱʂ -BOH$IBJO WT-MBNB*OEFY ΏΔ;Θ

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XIPBNJ 御⽥稔（みのるん）!NJOPSVO ςοΫΤόϯδΣϦετ ,%%*ΞδϟΠϧ։ൃηϯλʔʢ,"(ʣ,%%*݉຿ +"846(ӡӦ ౦ژࢧ෦ 43&ࢧ෦ /8+"84 • "844BNVSBJ • +BQBO"845PQ&OHJOFFS"MM$FSUT • "84$PNNVOJUZ#VJMEFS

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Έͳ͞Μɺ --.ΞϓϦ։ൃ ͯ͠·͔͢ʁ

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͜ͷ೥൒ɺ৭ΜͳΞϓϦ͕ ࡞ΒΕ·ͨ͠ΑͶ νϟοτϘοτ ࣾ಺จॻݕࡧ ΞϓϦ ύϫϙ࡞੒ ΤʔδΣϯτ FUD

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--.ք۾ͷτϨϯυ΋ ৭ʑͱมભ͕͋Γ·ͨ͠

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ᶃ ϓϩϯϓτΤϯδχΞϦϯά $IBU(15ϒʔϜͱಉ࣌ʹ ͙͢༗໊ʹͳͬͨख๏ɻ ೖྗจͷݴ͍ճ͠Λ ޻෉ͯ͠"*ʹ͍͍ײ͡ͷ ճ౴Λग़ྗͤ͞Δ

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ᶄ 3"(ʢ3FUSJFWBM"VHNFOUFE(FOFSBUJPOʣ ௚༁͢ΔͱʮݕࡧʹΑ֦ͬͯு͞Εͨੜ੒ʯɻ Ϟσϧ͕ࣄલֶश͍ͯ͠ͳ͍஌ࣝΛ ֎෦͔Βݕࡧͯ͠ิ׬͢ΔΞϓϩʔν ༗ٳͷਃ੥ํ๏͸ʁ ࣾ಺จॻͳͲ ݕࡧ݁ՌΛ ϓϩϯϓτʹิ଍

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ᶅ ΤʔδΣϯτ Ϣʔβʔͷʮ୅ཧਓʯͱͯ͠ ֎෦ͷπʔϧΛ࢖͍͜ͳ͢ ԿΛͲΜͳॱͰ࢖͏͔ɺ ͦͷޙͲ͏͢Δ͔ͷܭը΋ "*ࣗΒཱҊͯࣗ͠૸͢Δ ࠓ೥ͷ౎಺ͷՖՐେձΛ ௐ΂ͯΧϨϯμʔొ࿥ͯ͠ 8FCݕࡧ ֎෦"1*

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ͦΜͳ--.ΞϓϦ։ൃʹ͸ ಛ௃͕͋Γ·͢

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--.ΞϓϦ։ൃ͋Δ͋Δ ৭Μͳ"*ϞσϧΛ ࢼͨ͘͠ͳΔ ΈΜͳࣅͨॲཧΛ ࣮૷͢Δ ଞͷ044΍4BB4Λ ૊ΈࠐΜͰ࢖͏

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͜͜Ͱޮ͍ͯ͘Δͷ͕ ϑϨʔϜϫʔΫʂ

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ϑϨʔϜϫʔΫΛ࢖͏ͱʜ Ϟσϧͷมߋ͕؆୯ ʢϥοϓͯ͘͠ΕΔʣ Α͘࢖ΘΕΔػೳͷ ࣮૷͕؆୯ 044΍4BB4ͱͷ ౷߹͕؆୯

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༗໊ͳ੡඼ -BOH$IBJO -MBNB*OEFY τοϓγΣΞɻ ΤʔδΣϯτʹڧΈΛ࣋ͭ ηΧϯυγΣΞɻ 3"(ʹڧΈΛ࣋ͭ ͍ͣΕ΋1ZUIPOʹରԠɻ+454ܥ΋Ұ෦ରԠ

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༗໊ͳ੡඼ -BOH$IBJO -MBNB*OEFY τοϓγΣΞɻ ΤʔδΣϯτʹڧΈΛ࣋ͭ ηΧϯυγΣΞɻ 3"(ʹڧΈΛ࣋ͭ

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-BOH$IBJOͷϙʔτϑΥϦΦ -BOH$IBJO --.ΞϓϦػೳͷந৅Խ ʢMBOHDIBJO MBOHDIBJODPSFʣ -BOH4NJUI σόοάɺςετɺ ؂ࢹɺϓϩϯϓτ؅ཧ -BOH(SBQI ΤʔδΣϯτઃܭ *OUFHSBUJPOT αʔυύʔςΟ౷߹ ʢMBOHDIBJODPNNVOJUZʣ -BOH4FSWF "1*ͷσϓϩΠ ༗ ྉ Φ ϓ γ ἀ ϯ ͋ Γ

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-BOH$IBJOͷϞδϡʔϧʢྫʣ -BOH$IBJOͷ࢓૊Έ Ϣʔβʔ ͷೖྗ ϓϩϯϓτ ςϯϓϨʔτ Ϟσϧ Ξ΢τϓοτ ύʔαʔ ΞϓϦͷ ग़ྗ ϦτϦʔόʔ ʢݕࡧʣ

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࠷ۙɺWˠͱେܕਐԽத ಛʹͰ͸େ͖ͳมߋ͕͋ͬͨ • ύοέʔδͷ෼཭ • Մ؍ଌੑͷڧԽ • -$&-ه๏Λඪ४΁ • ετϦʔϛϯάڧԽ • ग़ྗύʔεͷڧԽ ͳͲ

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༗໊ͳ੡඼ -BOH$IBJO -MBNB*OEFY τοϓγΣΞɻ ΤʔδΣϯτʹڧΈΛ࣋ͭ ηΧϯυγΣΞɻ 3"(ʹڧΈΛ࣋ͭ

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-MBNB*OEFYͷϙʔτϑΥϦΦ -MBNB*OEFY --.ΞϓϦػೳͷந৅Խ ʢMMBNBJOEFYDPSFʣ *OUFHSBUJPOT αʔυύʔςΟ౷߹ -MBNB)VC αʔυύʔςΟ౷߹ͷ ୳ࡧ༻ϓϥοτϑΥʔϜ 1BDLT ࣮૷ྫςϯϓϨʔτ -MBNB$MPVE 3"(ڧԽ༻4BB4ʢϕʔλ൛ʣ -MBNB1BSTF υΩϡϝϯτղੳ ༗ ྉ Φ ϓ γ ἀ ϯ ͋ Γ

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ͬͪ͜΋࠷ۙWʹͳΓ·ͨ͠ େ͖ͳมߋ఺ • ύοέʔδͷ෼཭ • αʔυ౷߹Λ-MBNB)VC΁શدͤ • 4FSWJDF$POUFYUͷඇਪ঑Խ ͳͲ

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࣮ࡍʹ࢖͍ൺ΂ͯΈͨ ͔ͤͬ͘੨ࢁʹݺΜͰ͍͍ͨͩͨͷͰ 0$*ͷੜ੒"*αʔϏεΛࢼ͠·͢👍

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ᶃ 0$*ΞΧ΢ϯτ࡞੒ 0$*(FOFSBUJWF"*4FSWJDF͸ ݱঢ়γΧΰϦʔδϣϯͷΈରԠ 0$*͸ແྉͷ৔߹ɺҰͭͷ Ϧʔδϣϯ͔͠࢖͑ͳ͍ͨΊ ౦ژͷਓ͸࠶࡞੒͠·͠ΐ͏

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ᶄ ίʔυɾΤσΟλͷىಈ ίϯιʔϧӈ্͔ΒىಈՄೳɻ ϒϥ΢β͔Β࢖͑Δ74$PEF ϥΠϒϥϦͷΠϯετʔϧ࣌͸ VTFSΦϓγϣϯΛ࢖͑͹ ݖݶΤϥʔΛճආͰ͖·͢

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ᶅ ੜ੒"*αʔϏε΋νϥݟ $PIFSFͷ$PNNBOE&NCFE γϦʔζͱ-MBNB͕࢖͑Δ ࣮͸Կ΋ॳظઃఆ͠ͳͯ͘΋ ͦͷ··"1*͕ୟ͚Δʂ ʢσϓϩΠ΋༗ޮԽ΋ෆཁʣ

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ϑϨʔϜϫʔΫΛ࢖͏ͱ ͲΜͳ෩ʹخ͍͠ͷ͔ ࣮ࡍʹൺֱʂ

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୯७ͳςΩετੜ੒ͷ৔߹ 0$*4%, ೔ຊͷट૬͸ʁ ؛ా͞ΜͰ͢

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ϑϨʔϜϫʔΫΛ࢖͏ͱʜ -BOH$IBJO -MBNB*OEFY ྆ऀͱ΋γϯϓϧͰಡΈ΍͍͢ίʔυʹ✌

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3"(ͷ৔߹

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-MBNB*OEFYൿ఻ͷʮߦ3"(ʯ ඵͰ3"(ΛࢼͤΔʂ ެࣜυΩϡϝϯτͰ΋υϠإͰ঺հ͞Ε͍ͯ·͢

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0$*Ͱ΋ͪΌΜͱಈ͖·ͨ͠✌ ͜ͷจॻΛࢀরͤͯ͞ ਖ਼͘͠౴͑ͯ͘Εͨ ˞Ϟσϧ͸0QFO"*Λར༻

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࣮͸-BOH$IBJOͰ΋؆୯Ͱͨ͠ ߦͰ͸ͳ͍͕ɺΠϯϙʔτ͕ͪΐͬͱ૿͑Δఔ౓ -BOH$IBJO -MBNB*OEFY

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ΤʔδΣϯτͷ৔߹

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-BOH$IBJOͰ΍ͬͯΈͨ ೔ຊͷਓޱΛ ̎ͰׂΔͱ͍ͭ͘ʁ Ͱ͢ ͨͬͨ਺ߦͰ ݕࡧˍܭࢉΤʔδΣϯτ͕ॻ͚ͨʂ 8JLJQFEJB πʔϧ ܭࢉ πʔϧ

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-MBNB*OEFYͩͱʜ -BOH$IBJO -MBNB*OEFY -BOH$IBJOΑΓίʔυ͕૿͑·ͨ͠ɻͦΕͰ΋؆୯

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5IPVHIUϢʔβʔͷݴޠ͸೔ຊޠͰ͢ɻ ͜ͷ࣭໰ʹ౴͑ΔͨΊʹ͸ɺ਺஋ܭࢉ͕ඞཁͰ͢ɻ "DUJPO$BMDVMBUPS "DUJPO*OQVU\FYQSFTTJPO`^ 0CTFSWBUJPO 5IPVHIUπʔϧΛ࢖༻ͤͣʹճ౴Ͱ͖·͢ɻ "OTXFS೔ຊͷਓޱΛͰׂΔͱɺ໿ ਓ ʹͳΓ·͢ɻ ਪ࿦աఔ͕ λʔϛφϧͰ֬ೝͰ͖Δ

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·ͱΊ

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🦜 ·ͱΊ 🦙 • --.ΞϓϦ։ൃʹ͸ ϑϨʔϜϫʔΫΛ͏·͘࢖͓͏ʂ • -BOH$IBJO͸ΤʔδΣϯτʹڧΈɺ -MBNB*OEFY͸3"(ʹڧΈ͕͋Δ Έͳ͞Μ΋ͥͻʮࣗ෼Ͱ৮ͬͯʯ࢖͍ൺ΂ͯΈ͍ͯͩ͘͞ʂ

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એ఻ --.ΞϓϦ։ൃͷ ೖ໳ຊॻ͖·ͨ͠✌ ʢ͖ͷ͏ॏ൛͕ܾ·Γ·ͨ͠ʂʣ ΈΜͳͰ৭ΜͳΫϥ΢υΛ ࢖͍ൺ΂ͯΈΑ͏