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์ˆ˜ํ•™์ ์ธ ๋‚ด์šฉ์ด๋ผ ์Šคํ‚ต

์ฝ”์„ธ๋ผ ์š”์•ฝ

  • Video provides an introduction to calculus and derivatives, and explains that a deep understanding of calculus is not necessary to apply neural networks and deep learning

  • Explains that forward and backward functions will be introduced in Week 4, which will encapsulate everything needed to know about calculus

  • Introduces a function f(a) = 3a, which is a straight line

  • Explains that the slope of the function is equal to three, meaning that if a is increased by 0.001, f(a) will increase by 0.003

  • Explains that the slope of the function is equal to three no matter what the value of a is

  • Introduces a more complex example in the next video, where the slope of the function can be different at different points on the function

  • ๋น„๋””์˜ค๋Š” ๋ฏธ์ ๋ถ„ํ•™๊ณผ ๋„ํ•จ์ˆ˜์— ๋Œ€ํ•œ ์†Œ๊ฐœ๋ฅผ ์ œ๊ณตํ•˜๋ฉฐ, ์‹ ๊ฒฝ๋ง๊ณผ ๋”ฅ๋Ÿฌ๋‹์„ ์ ์šฉํ•˜๊ธฐ ์œ„ํ•ด ๊นŠ์€ ๋ฏธ์ ๋ถ„ํ•™ ์ง€์‹์ด ํ•„์š”ํ•˜์ง€ ์•Š๋‹ค๊ณ  ์„ค๋ช…ํ•ฉ๋‹ˆ๋‹ค.

  • 4์ฃผ์ฐจ์— ๋„์ž…๋  forward ํ•จ์ˆ˜์™€ backward ํ•จ์ˆ˜๊ฐ€ ๋ฏธ์ ๋ถ„ํ•™์— ๋Œ€ํ•ด ์•Œ์•„์•ผ ํ•  ๋ชจ๋“  ๊ฒƒ์„ ํฌ๊ด„ํ•  ๊ฒƒ์ด๋ผ๊ณ  ์„ค๋ช…ํ•ฉ๋‹ˆ๋‹ค.

  • f(a) = 3a๋ผ๋Š” ํ•จ์ˆ˜๋ฅผ ์†Œ๊ฐœํ•˜๋ฉฐ, ์ด๋Š” ์ง์„  ํ•จ์ˆ˜์ž…๋‹ˆ๋‹ค.

  • ํ•จ์ˆ˜์˜ ๊ธฐ์šธ๊ธฐ๊ฐ€ 3์ด๋ผ๋Š” ๊ฒƒ์€ a๊ฐ€ 0.001 ์ฆ๊ฐ€ํ•˜๋ฉด f(a)๋Š” 0.003 ์ฆ๊ฐ€ํ•œ๋‹ค๋Š” ์˜๋ฏธ๋ผ๊ณ  ์„ค๋ช…ํ•ฉ๋‹ˆ๋‹ค.

  • ํ•จ์ˆ˜์˜ ๊ธฐ์šธ๊ธฐ๋Š” a์˜ ๊ฐ’์— ์ƒ๊ด€์—†์ด ํ•ญ์ƒ 3์ด๋ผ๊ณ  ์„ค๋ช…ํ•ฉ๋‹ˆ๋‹ค.

  • ๋‹ค์Œ ๋น„๋””์˜ค์—์„œ๋Š” ํ•จ์ˆ˜์˜ ๊ธฐ์šธ๊ธฐ๊ฐ€ ํ•จ์ˆ˜์˜ ๋‹ค๋ฅธ ์ง€์ ์—์„œ ๋‹ค๋ฅผ ์ˆ˜ ์žˆ๋Š” ์ข€ ๋” ๋ณต์žกํ•œ ์˜ˆ์ œ๋ฅผ ์†Œ๊ฐœํ•œ๋‹ค๊ณ  ์„ค๋ช…ํ•ฉ๋‹ˆ๋‹ค.