็ฅ็ตๅผใฎใใฃใผใใฉใผใใณใฐ - Gradients and PyTorch's Autograd
ใใฃใผใใฉใผใใณใฐใๅงใใใใใซๅฟ ่ฆใชๅบๆฌ็ใชๅพฎๅๆณใจPyTorchใฎAutogradๆฉ่ฝใๅญฆใถ่ฌ็พฉใงใใ
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4 ไปถ
ใใใซใกใฏๅ่ฌ็ใฎ็ใใ๐
ๅบ็คใใๅฐ้ใฌใใซใพใงไฝ็ณป็ใซใใฃใผใใฉใผใใณใฐใๆฑใ[็ฅ็ตๆคใฎใใฃใผใใฉใผใใณใฐ]ๅ็ช็ฎใฎ่ฌ็พฉใงใใ[Gradient-based Linear Regression (2)]ใใชใผใใณใใใพใใใฎใงใ็ฅใใใใพใ๏ผ
๏ผ่ฌ็พฉใชใณใฏ๏ผhttps://inf.run/ymv1P๏ผ
ๆฌGradient-based Linear Regression (1)ใง็ดๆฅๅฎ่ฃ ใใใณใผใใใPyTorchใฎๆฉ่ฝใๅฉ็จใใฆๅฎๆฆใณใผใใจใใฆๅฎ่ฃ ใใๆนๆณใๅญฆใถ่ฌ็พฉใงใใใพใใใใผใฟๅๅฆ็ใฎๅฟ ่ฆๆงใ็่ซใๅญฆ็ฟใซไธใใๅฝฑ้ฟใ็่ซ็ใซๅญฆใณใๅฎๆฆใณใผใใงๅฎ่ฃ ใใ่ฌ็พฉใงใใ
็งใฎAll About AIใซใชใญใฅใฉใ ใซๅพใฃใฆๆฅใใใๆนใฏใใชใผใใณๅฒๅผๆ้ใๅฉ็จใใใใจ่ฏใใจๆใใพใ๐
่ฟฝๅ ใงๆฅ้ฑไธญใซๅพ็ถ่ฌ็พฉใงใใ[Gradient-based Linear Regression (3)]ใใชใผใใณไบๅฎใงใใ
ไธ็ทใซไธ็ๆธๅฝใใฃใผใใฉใผใใณใฐใฎไธ็ใไฝใไธใใฆใใใใใใใใคใๆๅใๅฐฝใใใพใ๏ผ
ใใใใจใใใใใพใใ
็ฅ็ตๆคใใ
ใใใซใกใฏๅ่ฌ็ใฎ็ใใ๐
ๅบ็คใใๅฐ้ใฌใใซใพใงไฝ็ณป็ใซใใฃใผใใฉใผใใณใฐใๆฑใ[์ ๊ฒฝ์ใฎใใฃใผใใฉใผใใณใฐ]ใฎ3็ช็ฎใฎ่ฌ็พฉใงใใ[Gradient-based Linear Regression (1)]ใใชใผใใณใใใพใใใฎใงใ็ฅใใใใพใ๏ผ
(่ฌ็พฉใชใณใฏ: https://inf.run/KgQoQ)
ๆฌ่ฌ็พฉใฏไปฅๅๅ ฌ้ใใใ[Gradient Descent]ใๅบใซใๆใใทใณใใซใชใขใใซใใใผใฟใซๅญฆ็ฟใใใ้็จใๆฑใใพใใ
็พๅจใชใผใใณ่จๅฟตๅฒๅผไธญใงใใฎใงใ็งใฎใซใชใญใฅใฉใ ใซๆฒฟใฃใฆๅญฆ็ฟใใใๆนใฏใใใฎๆ้ใๅฉ็จใใฆๅ่ฌ็ณใ่พผใฟใใใฆใใ ใใ๐
่ฟฝๅ ใงไป้ฑไธญใซๅพ็ถ่ฌ็พฉใงใใ[Gradient-based Linear Regression (2)]ใใชใผใใณไบๅฎใงใใ
ไธ็ทใซไธ็ๆธๅฝใใฃใผใใฉใผใใณใฐใฎไธ็ใไฝใไธใใฆใใใใใใๅธธใซๆๅใๅฐฝใใใพใ๏ผ
ใใใใจใใใใใพใใ
็ฅ็ตๆคใใ
ใใใซใกใฏๅ่ฌ็ใฎ็ใใ๐
ๅบ็คใใๅฐ้็ใชใฌใใซใพใงไฝ็ณป็ใซใใฃใผใใฉใผใใณใฐใๆฑใ[์ ๊ฒฝ์ใฎใใฃใผใใฉใผใใณใฐ]ใฎไบ็ช็ฎใฎ่ฌ็พฉใงใใ[Gradient Descent]ใใชใผใใณใใใพใใใฎใงใ็ฅใใใใพใ๏ผ
(่ฌ็พฉใชใณใฏ: https://inf.run/bK5xe)
ใใฎ่ฌ็พฉใฏไปฅๅๅ ฌ้ใใใ[Gradients and PyTorch's Autograd]ใๅบ็คใจใใฆใใใฃใผใใฉใผใใณใฐใฎๆใๆ ธๅฟ็ใชๅญฆ็ฟใขใซใดใชใบใ ใงใใ
gradient descentใ้ไธญ็ใซๆฑใใพใใ
็พๅจใชใผใใณ่จๅฟตๅฒๅผไธญใงใใฎใงใ็งใฎใซใชใญใฅใฉใ ใซๅพใฃใฆใใ ใใๆนใฏใใใฎๆ้ใๅฉ็จใใฆๅ่ฌ็ณ่ซใใ้กใใใพใ๐
ใใใซไป้ฑๆซใซๆฌกใฎ่ฌ็พฉใงใใ[Gradient-based Linear Regression (1)]ใใชใผใใณใใใไบๅฎใงใใ
ไธ็ทใซไธ็ๆธๅฝใใฃใผใใฉใผใใณใฐใฎไธ็ใไฝใไธใใฆใใใใใใใใคใๆๅใๅฐฝใใใพใ๏ผ
ใใใใจใใใใใพใใ
็ฅ็ตๆคใใ
ใใใซใกใฏๅ่ฌ็ใฎ็ใใ๏ผ
ๆฌๆฅใใๆฌๆ ผ็ใชใใฃใผใใฉใผใใณใฐ่ฌ็พฉใซใชใญใฅใฉใ ใ้ๅงใใใพใใฎใงใๆกๅ ใใใใพใ๐
็งใ็ดๆฅไฝๆใใ[็ฅ็ตๆคใฎใใฃใผใใฉใผใใณใฐ(ShinDL)]ใซใชใญใฅใฉใ ใฏใใใฃใผใใฉใผใใณใฐใๅบ็คใใๅฎ้ใฎ่ซๆใฌใใซใฎ่ฌ็พฉใพใงไฝ็ณป็ใซๆฑใใ
ใใฃใผใใฉใผใใณใฐๆ่กใ็ดๆฅใในใฆๅฎ่ฃ ใใฆใฟใชใใใๅฎ็งใซใใฎๆ่กใ็่งฃใใใใจใ็ฎๆจใจใใใซใชใญใฅใฉใ ใงใ๏ผ
ใพใใใใฃใผใใฉใผใใณใฐใฎๅ้ใ้ๅธธใซๅบใใใใๅคงใใชใใชใฅใผใ ใฎ่ฌ็พฉใใใใขใธใฅใผใซๅใใฆ็นๅฎใฎใใใใฏใๆฑใ่ฌ็พฉใงๆงๆใใใพใใ
ไปๅใชใผใใณใใ่ฌ็พฉใฏ[็ฅ็ตๆคใฎใใฃใผใใฉใผใใณใฐ]ใซใชใญใฅใฉใ ใฎๆๅใฎ่ฌ็พฉใจใใฆใใใฃใผใใฉใผใใณใฐใๆญฃใใ็่งฃใใใใใซ
ๅฟ ้ ใฎๆฐๅญฆ็ๅบ็คใงใใใๅพฎๅใใจPyTorchใใฌใผใ ใฏใผใฏใฎautogradๆ่กใๅญฆใถ่ฌ็พฉใงใใ
[ๅพ้ ใจPyTorchใฎAutograd]ใงใใ
(่ฌ็พฉใชใณใฏ: https://inf.run/wZoxE)
ไปๅพใฏๅบๆฌ็ใชใใฃใผใใฉใผใใณใฐๆ่กใ ใใงใชใใใใฃใผใใฉใผใใณใฐ่ซๆใๅบใซๅฎๆฆใใญใธใงใฏใใพใง้ฒ่กใใไบๅฎใงใใฎใงใ
ใใฃใผใใฉใผใใณใฐๅญฆ็ฟใๆบๅใใใฆใใๆนใฏใไปๅใฎ่ฌ็พฉใใไธๆญฉใใคใซใชใญใฅใฉใ ใซๆฒฟใฃใฆ้ฒใใฆใใใ ใใใฐใจๆใใพใ๐
ใใใซๆฅ้ฑใ2็ช็ฎใฎใใฃใผใใฉใผใใณใฐ่ฌ็พฉใงใใ[Gradient Descent]่ฌ็พฉใใชใผใใณไบๅฎใงใใฎใงใใๅ่ใใ ใใ๏ผ
ไปๅพใใใ่ฏใ่ฌ็พฉใๆไพใงใใใใๆๅใๅฐฝใใใพใ๏ผ
ใใใใจใใใใใพใใ
็ฅ็ตๆคใใ
