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Study_PyTorch

PyTorch ํ™ˆํŽ˜์ด์ง€๋ฅผ ์ฐธ๊ณ ํ•˜์—ฌ PyTorch ํ•™์Šต https://pytorch.kr/beginner/pytorch_with_examples.html

PyTorch์˜ ํ•ต์‹ฌ์—๋Š” 2๊ฐ€์ง€ ์ฃผ์š”ํ•œ ํŠน์ง•์ด ์žˆ์Šต๋‹ˆ๋‹ค.

  • NumPy์™€ ์œ ์‚ฌํ•˜์ง€๋งŒ GPU ์ƒ์—์„œ ์‹คํ–‰ ๊ฐ€๋Šฅํ•œ N์ฐจ์› Tensor
  • ์‹ ๊ฒฝ๋ง์„ ๊ตฌ์„ฑํ•˜๊ณ  ํ•™์Šตํ•˜๋Š” ๊ณผ์ •์—์„œ์˜ ์ž๋™ ๋ฏธ๋ถ„

์™„์ „ํžˆ ์—ฐ๊ฒฐ๋œ ReLU ์‹ ๊ฒฝ๋ง์„ ์˜ˆ์ œ๋กœ ์‚ฌ์šฉํ•  ๊ฒƒ์ž…๋‹ˆ๋‹ค. ์ด ์‹ ๊ฒฝ๋ง์€ ํ•˜๋‚˜์˜ ์€๋‹‰ ๊ณ„์ธต(Hidden Layer)์„ ๊ฐ–๊ณ  ์žˆ์œผ๋ฉฐ, ์‹ ๊ฒฝ๋ง์˜ ์ถœ๋ ฅ๊ณผ ์ •๋‹ต ์‚ฌ์ด์˜ ์œ ํด๋ฆฌ๋“œ ๊ฑฐ๋ฆฌ(Euclidean Distance)๋ฅผ ์ตœ์†Œํ™”ํ•˜๋Š” ์‹์œผ๋กœ ๊ฒฝ์‚ฌํ•˜๊ฐ•๋ฒ•(Gradient Descent)์„ ์‚ฌ์šฉํ•˜์—ฌ ๋ฌด์ž‘์œ„์˜ ๋ฐ์ดํ„ฐ๋ฅผ ๋งž์ถ”๋„๋ก ํ•™์Šตํ•  ๊ฒƒ์ž…๋‹ˆ๋‹ค.

์˜ˆ์ œ๋กœ ๋ฐฐ์šฐ๋Š” PyTorch

๋ชฉ์ฐจ

  1. Tensor
    1. ์ค€๋น„ ์šด๋™: NumPy
    2. PyTorch: Tensor
  2. Autograd
    1. PyTorch: Tensor์™€ autograd
    2. PyTorch: ์ƒˆ autograd ํ•จ์ˆ˜ ์ •์˜ํ•˜๊ธฐ
    3. TensorFlow: ์ •์  ๊ทธ๋ž˜ํ”„(Static Graph)
  3. nn ๋ชจ๋“ˆ
    1. PyTorch: nn
    2. PyTorch: optim
    3. PyTorch: ์‚ฌ์šฉ์ž ์ •์˜ nn ๋ชจ๋“ˆ
    4. PyTorch: ์ œ์–ด ํ๋ฆ„(Control Flow) + ๊ฐ€์ค‘์น˜ ๊ณต์œ (Weight Sharing)

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