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์ž๋™์ฐจ ๋ฒˆํ˜ธํŒ ์ธ์‹ ํ”„๋กœ๊ทธ๋žจ
- Back Propagation ์‹ ๊ฒฝ๋ง์„ ์ด์šฉํ•œ ๋ฒˆํ˜ธํŒ ์ธ์‹ ํ”„๋กœ๊ทธ๋žจ ๊ตฌํ˜„ -
์ธ๊ณต์ง€๋ŠฅTerm Project
20800577
์žฅ ํ˜ธ ์ƒ
๋ชฉ ์ฐจ
1. ๋ฌธ์ œ ์ •์˜
a. ์„ค๊ณ„๋ชฉํ‘œ
b. ์‚ฌ์šฉํ•  ์ธ๊ณต์ง€๋Šฅ ๊ธฐ๋ฒ• ์†Œ
๊ฐœ
c. ํŒ€ ๊ตฌ์„ฑ ๋ฐ ์—ญํ•  ๋ถ„๋‹ด
d. ๊ตฌํ˜„ ์ผ์ •
2. ์˜ˆ์ œ ํ”„๋กœ๊ทธ๋žจ ๊ฐ„๋žตํ•œ
์†Œ๊ฐœ
3. ๊ตฌํ˜„ ํ”„๋กœ๊ทธ๋žจ ์†Œ๊ฐœ
a. ๋™์ž‘ ๋ฐ ๊ตฌ์กฐ
b. ์ž๋™์ฐจ ๋ฒˆํ˜ธํŒ์˜ ํŠน์„ฑ
c. ๋ฌธ์ž ์ธ์‹ ๋ฐฉ๋ฒ•
d. ํ”„๋กœ๊ทธ๋žจ ๊ตฌ์„ฑ โ€“ Out Line
e. ์‹ ๊ฒฝ๋ง ๊ตฌ์„ฑ
4. ์ค‘์š” Function
5. User Manual
6. ๊ตฌํ˜„ ๊ฒฐ๊ณผ
7. Improvement
8. Demonstration
1. ๋ฌธ์ œ์ •์˜
๏‚ง 1-a. ์„ค๊ณ„ ๋ชฉํ‘œ
๏ƒบ "Back Propagation Algorithm" ์„ ์ด์šฉํ•˜์—ฌ ์ž๋™
์ฐจ ๋ฒˆํ˜ธํŒ์„ ์ธ์‹ํ•˜๋Š” ํ”„๋กœ๊ทธ๋žจ์„ ๊ตฌํ˜„ํ•œ๋‹ค.
๏ƒบ ์‚ฌ์šฉํ•˜๋Š” ํ”„๋กœ๊ทธ๋ž˜๋ฐ ์–ธ์–ด๋Š” JAVA ๋ฅผ ์„ ํƒํ•˜์˜€
์œผ๋ฉฐ, Eclipse ๋ฅผ ๊ฐœ๋ฐœ ํˆด๋กœ ์‚ฌ์šฉํ•  ์˜ˆ์ •์ด๋‹ค.
1. ๋ฌธ์ œ ์ •์˜
๏‚ง 1-b. ์‚ฌ์šฉ ํ•  ์ธ๊ณต์ง€๋Šฅ ๊ธฐ๋ฒ• ์†Œ๊ฐœ
๏ƒบ Back Propagation ์‹ ๊ฒฝ๋ง
๏‚  Supervised Learning
๏ƒบ ์ž๋™์ฐจ ๋ฒˆํ˜ธํŒ์€ ๋น„๊ต์  ๊ทœ๊ฒฉํ™” ๋œ ํ˜•์‹์˜ ๋ฌธ์ž
๏ƒบ Back Propagation Algorithm์€ ๋ฌธ์ž์ธ์‹์— ๋งŽ์ด
์‚ฌ์šฉ๋˜๋Š” ๊ธฐ๋ฒ•์œผ๋กœ ์ž๋™์ฐจ ๋ฒˆํ˜ธํŒ(๋ฌธ์ž๋กœ ์ด๋ฃจ
์–ด์ง)์„ ์ธ์‹ํ•˜๋Š” ํ”„๋กœ๊ทธ๋žจ์— ์ ํ•ฉํ•  ๊ฒƒ์œผ๋กœ ์ƒ
๊ฐ๋œ๋‹ค.
1. ๋ฌธ์ œ ์ •์˜
๏‚ง 1-c. ํŒ€ ๊ตฌ์„ฑ ๋ฐ ์—ญํ•  ๋ถ„๋‹ด
๏ƒบ ๋‹จ๋… ํŒ€์œผ๋กœ ์ง„ํ–‰ํ•  ์˜ˆ์ •
๏‚ง 1-d. ๊ตฌํ˜„ ์ผ์ •
๏ƒบ 10.24 ~ 10.26 :Term Project ์ฃผ์ œ ์„ ์ •
๏ƒบ 10.26 ~ 10.27 : ๋„์„œ ๋Œ€์ถœ ๋ฐ ์‚ฌ์šฉํ•  ์˜ˆ์ œ ์ฝ”๋“œ ๋ถ„์„
๏ƒบ 10.27 :Term Project ๊ธฐํš์„œ ์ž‘์„ฑ
๏ƒบ 10.30 ~ 10.31 : ์˜ˆ์ œ ์ฝ”๋“œ ์‹คํ–‰ ๋ฐ ๋ถ„์„
๏ƒบ 11. 1 ~ 11. 3 : ํ•„์š”ํ•œ ์ž๋ฃŒ ๋ฐ ์ถ”๊ฐ€ ์†Œ์Šค์ฝ”๋“œ ์ˆ˜์ง‘
๏ƒบ 11. 5 ~ 11.23 : ์ตœ์ข… ํ”„๋กœ๊ทธ๋žจ ๊ตฌํ˜„ ๋ฐ ๋””๋ฒ„๊น…
๏ƒบ 11.26 ~ 11.27 : ์ตœ์ข… ๋ณด๊ณ ์„œ ์ž‘์„ฑ
๏ƒบ 11.28 : ๋ฐœํ‘œ์šฉ ๋ฐ๋ชจ ๋ฐ PPT ์ž‘์„ฑ
2. ์˜ˆ์ œ ํ”„๋กœ๊ทธ๋žจ ์†Œ๊ฐœ
XOR์— ๋Œ€ํ•œ Back Propagation ์‹ ๊ฒฝ๋ง์„
C++์„ ํ†ตํ•ด ๊ตฌํ˜„ํ•œ ์˜ˆ์ œ ํ”„๋กœ๊ทธ๋žจ์ด๋‹ค.
3. ๊ตฌํ˜„ ํ”„๋กœ๊ทธ๋žจ ์†Œ๊ฐœ
๏‚ง 3-a. ๋™์ž‘ ๋ฐ ๊ตฌ์กฐ
3. ๊ตฌํ˜„ ํ”„๋กœ๊ทธ๋žจ ์†Œ๊ฐœ
๏‚ง 3-b. ์ž๋™์ฐจ ๋ฒˆํ˜ธํŒ์˜ ํŠน์„ฑ
3. ๊ตฌํ˜„ ํ”„๋กœ๊ทธ๋žจ ์†Œ๊ฐœ
๏‚ง 3-c. ๋ฌธ์ž ์ธ์‹ ๋ฐฉ๋ฒ•
๏ƒบ ๊ตฌํ˜„ํ•˜๋Š” ํ”„๋กœ๊ทธ๋žจ์€ ์ž๋™์ฐจ์˜ ์˜์ƒ์ž๋ฃŒ์— ๋Œ€
ํ•œ ๋””์ง€ํ„ธํ™” ๋ฐ ์˜์—ญ ์ถ”์ถœ์€ ์ด๋ฏธ ๋˜์–ด ์žˆ๋‹ค๊ณ  ๊ฐ€
์ •ํ•˜๊ณ  ์ง„ํ–‰ํ•œ๋‹ค.
3. ๊ตฌํ˜„ ํ”„๋กœ๊ทธ๋žจ ์†Œ๊ฐœ
๏‚ง 3-c. ๋ฌธ์ž ์ธ์‹ ๋ฐฉ๋ฒ• - ๊ตฌ์„ฑ ์š”์†Œ ๋ณ„ ์ธ์‹ ๋ฐฉ๋ฒ•
๏ƒบ ์•ž ์ˆซ์ž 2, ๊ฐ€์šด๋ฐ ํ•œ๊ธ€ 1, ๋’ค ๊ณ ์œ  ์ˆซ์ž 4
๏ƒบ ์˜์—ญ์„ ํŒŒ์•…ํ•˜๊ธฐ ์œ„ํ•ด์„œ ๊ฐ ์˜์—ญ๋ณ„ ์ƒ๋Œ€์ ์ธ ์œ„
์น˜ ์ขŒํ‘œ๋ฅผ ์ด์šฉ.
๏ƒบ ๊ฐ ์˜์—ญ์˜ ํฌ๊ธฐ๋Š” ํ•ญ์ƒ ์ผ์ •
๏ƒบ ๊ฐ ๊ตฌ์„ฑ์š”์†Œ๊ฐ€ ์ฐจ์ง€ํ•˜๋Š” ์˜์—ญ์˜ ํฌ๊ธฐ ๋ฐ ์œ„์น˜๋Š”
ํ•ญ์ƒ ๋™์ผํ•œ ์ƒ๋Œ€์ขŒํ‘œ๋ฅผ ๊ฐ–๋Š”๋‹ค.
3. ๊ตฌํ˜„ ํ”„๋กœ๊ทธ๋žจ ์†Œ๊ฐœ
๏‚ง 3-c. ๋ฌธ์ž ์ธ์‹ ๋ฐฉ๋ฒ•
- ๋ฌธ์ž ์ธ์‹์„ ์œ„ํ•œ ์ž…๋ ฅ ๋ฐ์ดํ„ฐ ์ถ”์ถœ ๋ฐฉ๋ฒ•
๏ƒบ ์ž๋™์ฐจ ๋ฒˆํ˜ธํŒ์€ ๋ฐ”ํƒ•์ด ํฐ์ƒ‰์ด๊ณ 
๏ƒบ ๊ธ€์ž๋Š” ๊ฒ€์ •์ƒ‰์œผ๋กœ ๊ณ ์ •
๏ƒบ ์ƒ‰์ƒ ์ •๋ณด๋ฅผ ์ด์šฉํ•˜์—ฌ ๋ฌธ์ž๋ฅผ ์ธ์‹
3. ๊ตฌํ˜„ ํ”„๋กœ๊ทธ๋žจ ์†Œ๊ฐœ
๏‚ง 3-c. ๋ฌธ์ž ์ธ์‹์— ๋ฐฉ๋ฒ•
๏ƒบ ๊ฐ ๋ฌธ์ž ์˜์—ญ์˜ RGB ์ •๋ณด๋ฅผ ํ‘๋ฐฑ์œผ๋กœ ๋ณ€ํ™˜ํ•˜์—ฌ
Input ๋ฐ์ดํ„ฐ๋กœ ์ž…๋ ฅ
๏ƒบ ํ•œ ๋ฒˆํ˜ธํŒ ๋งˆ๋‹ค 4๋ฒˆ ๋ฐ˜๋ณตํ•˜์—ฌ 4๊ฐœ์˜ ๋ฌธ์ž์— ๋Œ€ํ•ด
์„œ ์ธ์‹
๏ƒบ Output Neuron ์˜ ๊ฐ’ ์ค‘ ๊ฐ€์žฅ ํฐ ๊ฐ’์„ ์ฐพ์•„์„œ ํ•ด
๋‹น Index ์˜ ๋ฌธ์ž๋กœ ์ธ์‹
๏ƒบ outValue ์˜ ๊ฐ’์ด 0.0 ๋ณด๋‹ค ์ž‘์œผ๋ฉด ์ธ์‹ ์˜ค๋ฅ˜๋กœ
์ฒ˜๋ฆฌ
3. ๊ตฌํ˜„ ํ”„๋กœ๊ทธ๋žจ ์†Œ๊ฐœ
๏‚ง 3- d. ํ”„๋กœ๊ทธ๋žจ ๊ตฌ์„ฑ - Out - Line
3. ๊ตฌํ˜„ ํ”„๋กœ๊ทธ๋žจ ์†Œ๊ฐœ
๏‚ง 3-e. ์‹ ๊ฒฝ๋ง ๊ตฌ์„ฑ
๏ƒบ Neuron ์˜ ์ˆ˜
๏‚  Input Neuron ์ˆ˜ 330 ๊ฐœ
(์ „์ฒด pixels ์ค‘ ์•ฝ 1/2)
๏‚  Hidden Neuron ์ˆ˜ : 50 ๊ฐœ -> 1000 ๊ฐœ
(์ธ์‹๋ฅ  ๋ฌธ์ œ๋กœ ์ˆ˜์ •)
๏‚  Output Neuron ์ˆ˜ : 10 ๊ฐœ
(์ธ์‹ํ•  ๋ฌธ์ž ์ˆ˜ : 0 ~ 9 ๊นŒ์ง€ 10 ๊ฐœ)
3. ๊ตฌํ˜„ ํ”„๋กœ๊ทธ๋žจ ์†Œ๊ฐœ
๏‚ง 3-e. ์‹ ๊ฒฝ๋ง ๊ตฌ์„ฑ
๏ƒบ Training ์„ค์ •
๏‚  ํ•œ ๋ฌธ์ž ๋‹น training ์€ ์—๋Ÿฌ ๊ฐ’์ด 0.000001f ๋ณด๋‹ค
์ž‘์„ ๋•Œ๊นŒ์ง€ ํ•™์Šต
๏‚  ๊ฐ™์€ ๋ฌธ์ž์— ๋Œ€ํ•ด์„œ ์ •ํ™•๋„๋ฅผ ๋†’์ด๊ธฐ ์œ„ํ•ด์„œ 6๋ฒˆ
์„ ๋ฐ˜๋ณตํ•˜์—ฌ training
๏‚  ํ•œ ๋ฒˆํ˜ธํŒ์—์„œ ๋ฒˆํ˜ธ ์˜์—ญ์˜ 4๊ฐœ์˜ ๋ฌธ์ž์— ๋Œ€ํ•ด
training
4. ์ค‘์š” Function โ€“ Train()
4. ์ค‘์š” Function โ€“ Forwardpass()
4. ์ค‘์š” Function โ€“ Sigmoid()
4. ์ค‘์š” Function โ€“ Putchar()
5. User Manual
6. ๊ตฌํ˜„ ๊ฒฐ๊ณผ - ํ•™์Šต
6. ๊ตฌํ˜„ ๊ฒฐ๊ณผ โ€“ ๋ฌธ์ž์ธ์‹(์„ฑ๊ณต)
6. ๊ตฌํ˜„ ๊ฒฐ๊ณผ โ€“ ๋ฌธ์ž์ธ์‹(์‹คํŒจ)
7. Improvement
๏‚ง ํ•™์Šต ๊ฒฐ๊ณผ ์ €์žฅํ•˜๋Š” ๊ธฐ๋Šฅ
๏‚ง ์‹ค์ œ ์นด๋ฉ”๋ผ๋ฅผ ์ด์šฉํ•ด์„œ ๋ฒˆํ˜ธํŒ ์ธ์‹
๏‚ง ์—ฌ๋Ÿฌ ๊ฐ€์ง€ ๋ฒˆํ˜ธํŒ ์ข…๋ฅ˜ ์ถ”๊ฐ€
๏‚ง ์˜ค์ฐจ์œจ์„ ์ค„์ธ๋‹ค๋ฉด,
์‹ค์ œ ๋ฒˆํ˜ธํŒ ์ธ์‹ ํ”„๋กœ๊ทธ๋žจ ๊ตฌ์ถ• ๊ฐ€๋Šฅ
8. Demonstration

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  • 2. ๋ชฉ ์ฐจ 1. ๋ฌธ์ œ ์ •์˜ a. ์„ค๊ณ„๋ชฉํ‘œ b. ์‚ฌ์šฉํ•  ์ธ๊ณต์ง€๋Šฅ ๊ธฐ๋ฒ• ์†Œ ๊ฐœ c. ํŒ€ ๊ตฌ์„ฑ ๋ฐ ์—ญํ•  ๋ถ„๋‹ด d. ๊ตฌํ˜„ ์ผ์ • 2. ์˜ˆ์ œ ํ”„๋กœ๊ทธ๋žจ ๊ฐ„๋žตํ•œ ์†Œ๊ฐœ 3. ๊ตฌํ˜„ ํ”„๋กœ๊ทธ๋žจ ์†Œ๊ฐœ a. ๋™์ž‘ ๋ฐ ๊ตฌ์กฐ b. ์ž๋™์ฐจ ๋ฒˆํ˜ธํŒ์˜ ํŠน์„ฑ c. ๋ฌธ์ž ์ธ์‹ ๋ฐฉ๋ฒ• d. ํ”„๋กœ๊ทธ๋žจ ๊ตฌ์„ฑ โ€“ Out Line e. ์‹ ๊ฒฝ๋ง ๊ตฌ์„ฑ 4. ์ค‘์š” Function 5. User Manual 6. ๊ตฌํ˜„ ๊ฒฐ๊ณผ 7. Improvement 8. Demonstration
  • 3. 1. ๋ฌธ์ œ์ •์˜ ๏‚ง 1-a. ์„ค๊ณ„ ๋ชฉํ‘œ ๏ƒบ "Back Propagation Algorithm" ์„ ์ด์šฉํ•˜์—ฌ ์ž๋™ ์ฐจ ๋ฒˆํ˜ธํŒ์„ ์ธ์‹ํ•˜๋Š” ํ”„๋กœ๊ทธ๋žจ์„ ๊ตฌํ˜„ํ•œ๋‹ค. ๏ƒบ ์‚ฌ์šฉํ•˜๋Š” ํ”„๋กœ๊ทธ๋ž˜๋ฐ ์–ธ์–ด๋Š” JAVA ๋ฅผ ์„ ํƒํ•˜์˜€ ์œผ๋ฉฐ, Eclipse ๋ฅผ ๊ฐœ๋ฐœ ํˆด๋กœ ์‚ฌ์šฉํ•  ์˜ˆ์ •์ด๋‹ค.
  • 4. 1. ๋ฌธ์ œ ์ •์˜ ๏‚ง 1-b. ์‚ฌ์šฉ ํ•  ์ธ๊ณต์ง€๋Šฅ ๊ธฐ๋ฒ• ์†Œ๊ฐœ ๏ƒบ Back Propagation ์‹ ๊ฒฝ๋ง ๏‚  Supervised Learning ๏ƒบ ์ž๋™์ฐจ ๋ฒˆํ˜ธํŒ์€ ๋น„๊ต์  ๊ทœ๊ฒฉํ™” ๋œ ํ˜•์‹์˜ ๋ฌธ์ž ๏ƒบ Back Propagation Algorithm์€ ๋ฌธ์ž์ธ์‹์— ๋งŽ์ด ์‚ฌ์šฉ๋˜๋Š” ๊ธฐ๋ฒ•์œผ๋กœ ์ž๋™์ฐจ ๋ฒˆํ˜ธํŒ(๋ฌธ์ž๋กœ ์ด๋ฃจ ์–ด์ง)์„ ์ธ์‹ํ•˜๋Š” ํ”„๋กœ๊ทธ๋žจ์— ์ ํ•ฉํ•  ๊ฒƒ์œผ๋กœ ์ƒ ๊ฐ๋œ๋‹ค.
  • 5. 1. ๋ฌธ์ œ ์ •์˜ ๏‚ง 1-c. ํŒ€ ๊ตฌ์„ฑ ๋ฐ ์—ญํ•  ๋ถ„๋‹ด ๏ƒบ ๋‹จ๋… ํŒ€์œผ๋กœ ์ง„ํ–‰ํ•  ์˜ˆ์ • ๏‚ง 1-d. ๊ตฌํ˜„ ์ผ์ • ๏ƒบ 10.24 ~ 10.26 :Term Project ์ฃผ์ œ ์„ ์ • ๏ƒบ 10.26 ~ 10.27 : ๋„์„œ ๋Œ€์ถœ ๋ฐ ์‚ฌ์šฉํ•  ์˜ˆ์ œ ์ฝ”๋“œ ๋ถ„์„ ๏ƒบ 10.27 :Term Project ๊ธฐํš์„œ ์ž‘์„ฑ ๏ƒบ 10.30 ~ 10.31 : ์˜ˆ์ œ ์ฝ”๋“œ ์‹คํ–‰ ๋ฐ ๋ถ„์„ ๏ƒบ 11. 1 ~ 11. 3 : ํ•„์š”ํ•œ ์ž๋ฃŒ ๋ฐ ์ถ”๊ฐ€ ์†Œ์Šค์ฝ”๋“œ ์ˆ˜์ง‘ ๏ƒบ 11. 5 ~ 11.23 : ์ตœ์ข… ํ”„๋กœ๊ทธ๋žจ ๊ตฌํ˜„ ๋ฐ ๋””๋ฒ„๊น… ๏ƒบ 11.26 ~ 11.27 : ์ตœ์ข… ๋ณด๊ณ ์„œ ์ž‘์„ฑ ๏ƒบ 11.28 : ๋ฐœํ‘œ์šฉ ๋ฐ๋ชจ ๋ฐ PPT ์ž‘์„ฑ
  • 6. 2. ์˜ˆ์ œ ํ”„๋กœ๊ทธ๋žจ ์†Œ๊ฐœ XOR์— ๋Œ€ํ•œ Back Propagation ์‹ ๊ฒฝ๋ง์„ C++์„ ํ†ตํ•ด ๊ตฌํ˜„ํ•œ ์˜ˆ์ œ ํ”„๋กœ๊ทธ๋žจ์ด๋‹ค.
  • 7. 3. ๊ตฌํ˜„ ํ”„๋กœ๊ทธ๋žจ ์†Œ๊ฐœ ๏‚ง 3-a. ๋™์ž‘ ๋ฐ ๊ตฌ์กฐ
  • 8. 3. ๊ตฌํ˜„ ํ”„๋กœ๊ทธ๋žจ ์†Œ๊ฐœ ๏‚ง 3-b. ์ž๋™์ฐจ ๋ฒˆํ˜ธํŒ์˜ ํŠน์„ฑ
  • 9. 3. ๊ตฌํ˜„ ํ”„๋กœ๊ทธ๋žจ ์†Œ๊ฐœ ๏‚ง 3-c. ๋ฌธ์ž ์ธ์‹ ๋ฐฉ๋ฒ• ๏ƒบ ๊ตฌํ˜„ํ•˜๋Š” ํ”„๋กœ๊ทธ๋žจ์€ ์ž๋™์ฐจ์˜ ์˜์ƒ์ž๋ฃŒ์— ๋Œ€ ํ•œ ๋””์ง€ํ„ธํ™” ๋ฐ ์˜์—ญ ์ถ”์ถœ์€ ์ด๋ฏธ ๋˜์–ด ์žˆ๋‹ค๊ณ  ๊ฐ€ ์ •ํ•˜๊ณ  ์ง„ํ–‰ํ•œ๋‹ค.
  • 10. 3. ๊ตฌํ˜„ ํ”„๋กœ๊ทธ๋žจ ์†Œ๊ฐœ ๏‚ง 3-c. ๋ฌธ์ž ์ธ์‹ ๋ฐฉ๋ฒ• - ๊ตฌ์„ฑ ์š”์†Œ ๋ณ„ ์ธ์‹ ๋ฐฉ๋ฒ• ๏ƒบ ์•ž ์ˆซ์ž 2, ๊ฐ€์šด๋ฐ ํ•œ๊ธ€ 1, ๋’ค ๊ณ ์œ  ์ˆซ์ž 4 ๏ƒบ ์˜์—ญ์„ ํŒŒ์•…ํ•˜๊ธฐ ์œ„ํ•ด์„œ ๊ฐ ์˜์—ญ๋ณ„ ์ƒ๋Œ€์ ์ธ ์œ„ ์น˜ ์ขŒํ‘œ๋ฅผ ์ด์šฉ. ๏ƒบ ๊ฐ ์˜์—ญ์˜ ํฌ๊ธฐ๋Š” ํ•ญ์ƒ ์ผ์ • ๏ƒบ ๊ฐ ๊ตฌ์„ฑ์š”์†Œ๊ฐ€ ์ฐจ์ง€ํ•˜๋Š” ์˜์—ญ์˜ ํฌ๊ธฐ ๋ฐ ์œ„์น˜๋Š” ํ•ญ์ƒ ๋™์ผํ•œ ์ƒ๋Œ€์ขŒํ‘œ๋ฅผ ๊ฐ–๋Š”๋‹ค.
  • 11. 3. ๊ตฌํ˜„ ํ”„๋กœ๊ทธ๋žจ ์†Œ๊ฐœ ๏‚ง 3-c. ๋ฌธ์ž ์ธ์‹ ๋ฐฉ๋ฒ• - ๋ฌธ์ž ์ธ์‹์„ ์œ„ํ•œ ์ž…๋ ฅ ๋ฐ์ดํ„ฐ ์ถ”์ถœ ๋ฐฉ๋ฒ• ๏ƒบ ์ž๋™์ฐจ ๋ฒˆํ˜ธํŒ์€ ๋ฐ”ํƒ•์ด ํฐ์ƒ‰์ด๊ณ  ๏ƒบ ๊ธ€์ž๋Š” ๊ฒ€์ •์ƒ‰์œผ๋กœ ๊ณ ์ • ๏ƒบ ์ƒ‰์ƒ ์ •๋ณด๋ฅผ ์ด์šฉํ•˜์—ฌ ๋ฌธ์ž๋ฅผ ์ธ์‹
  • 12. 3. ๊ตฌํ˜„ ํ”„๋กœ๊ทธ๋žจ ์†Œ๊ฐœ ๏‚ง 3-c. ๋ฌธ์ž ์ธ์‹์— ๋ฐฉ๋ฒ• ๏ƒบ ๊ฐ ๋ฌธ์ž ์˜์—ญ์˜ RGB ์ •๋ณด๋ฅผ ํ‘๋ฐฑ์œผ๋กœ ๋ณ€ํ™˜ํ•˜์—ฌ Input ๋ฐ์ดํ„ฐ๋กœ ์ž…๋ ฅ ๏ƒบ ํ•œ ๋ฒˆํ˜ธํŒ ๋งˆ๋‹ค 4๋ฒˆ ๋ฐ˜๋ณตํ•˜์—ฌ 4๊ฐœ์˜ ๋ฌธ์ž์— ๋Œ€ํ•ด ์„œ ์ธ์‹ ๏ƒบ Output Neuron ์˜ ๊ฐ’ ์ค‘ ๊ฐ€์žฅ ํฐ ๊ฐ’์„ ์ฐพ์•„์„œ ํ•ด ๋‹น Index ์˜ ๋ฌธ์ž๋กœ ์ธ์‹ ๏ƒบ outValue ์˜ ๊ฐ’์ด 0.0 ๋ณด๋‹ค ์ž‘์œผ๋ฉด ์ธ์‹ ์˜ค๋ฅ˜๋กœ ์ฒ˜๋ฆฌ
  • 13. 3. ๊ตฌํ˜„ ํ”„๋กœ๊ทธ๋žจ ์†Œ๊ฐœ ๏‚ง 3- d. ํ”„๋กœ๊ทธ๋žจ ๊ตฌ์„ฑ - Out - Line
  • 14. 3. ๊ตฌํ˜„ ํ”„๋กœ๊ทธ๋žจ ์†Œ๊ฐœ ๏‚ง 3-e. ์‹ ๊ฒฝ๋ง ๊ตฌ์„ฑ ๏ƒบ Neuron ์˜ ์ˆ˜ ๏‚  Input Neuron ์ˆ˜ 330 ๊ฐœ (์ „์ฒด pixels ์ค‘ ์•ฝ 1/2) ๏‚  Hidden Neuron ์ˆ˜ : 50 ๊ฐœ -> 1000 ๊ฐœ (์ธ์‹๋ฅ  ๋ฌธ์ œ๋กœ ์ˆ˜์ •) ๏‚  Output Neuron ์ˆ˜ : 10 ๊ฐœ (์ธ์‹ํ•  ๋ฌธ์ž ์ˆ˜ : 0 ~ 9 ๊นŒ์ง€ 10 ๊ฐœ)
  • 15. 3. ๊ตฌํ˜„ ํ”„๋กœ๊ทธ๋žจ ์†Œ๊ฐœ ๏‚ง 3-e. ์‹ ๊ฒฝ๋ง ๊ตฌ์„ฑ ๏ƒบ Training ์„ค์ • ๏‚  ํ•œ ๋ฌธ์ž ๋‹น training ์€ ์—๋Ÿฌ ๊ฐ’์ด 0.000001f ๋ณด๋‹ค ์ž‘์„ ๋•Œ๊นŒ์ง€ ํ•™์Šต ๏‚  ๊ฐ™์€ ๋ฌธ์ž์— ๋Œ€ํ•ด์„œ ์ •ํ™•๋„๋ฅผ ๋†’์ด๊ธฐ ์œ„ํ•ด์„œ 6๋ฒˆ ์„ ๋ฐ˜๋ณตํ•˜์—ฌ training ๏‚  ํ•œ ๋ฒˆํ˜ธํŒ์—์„œ ๋ฒˆํ˜ธ ์˜์—ญ์˜ 4๊ฐœ์˜ ๋ฌธ์ž์— ๋Œ€ํ•ด training
  • 16. 4. ์ค‘์š” Function โ€“ Train()
  • 17. 4. ์ค‘์š” Function โ€“ Forwardpass()
  • 18. 4. ์ค‘์š” Function โ€“ Sigmoid()
  • 19. 4. ์ค‘์š” Function โ€“ Putchar()
  • 22. 6. ๊ตฌํ˜„ ๊ฒฐ๊ณผ โ€“ ๋ฌธ์ž์ธ์‹(์„ฑ๊ณต)
  • 23. 6. ๊ตฌํ˜„ ๊ฒฐ๊ณผ โ€“ ๋ฌธ์ž์ธ์‹(์‹คํŒจ)
  • 24. 7. Improvement ๏‚ง ํ•™์Šต ๊ฒฐ๊ณผ ์ €์žฅํ•˜๋Š” ๊ธฐ๋Šฅ ๏‚ง ์‹ค์ œ ์นด๋ฉ”๋ผ๋ฅผ ์ด์šฉํ•ด์„œ ๋ฒˆํ˜ธํŒ ์ธ์‹ ๏‚ง ์—ฌ๋Ÿฌ ๊ฐ€์ง€ ๋ฒˆํ˜ธํŒ ์ข…๋ฅ˜ ์ถ”๊ฐ€ ๏‚ง ์˜ค์ฐจ์œจ์„ ์ค„์ธ๋‹ค๋ฉด, ์‹ค์ œ ๋ฒˆํ˜ธํŒ ์ธ์‹ ํ”„๋กœ๊ทธ๋žจ ๊ตฌ์ถ• ๊ฐ€๋Šฅ