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LIF-based SNN with Genetic Optimization Technique

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neuron-genetic-python

neuron network with genetic optimisation

๊ฐœ์š”

SNN์˜ ๊ตฌ์กฐ๋ฅผ ์ ์šฉํ•ด, ๋ชจ๋“  ๋…ธ๋“œ๊ฐ€ ์ƒํ˜ธ ๊ฐ€์ค‘์น˜๋กœ ์—ฐ๊ฒฐ๋œ ๋„คํŠธ์›Œํฌ๋ฅผ Python์œผ๋กœ ๊ตฌํ˜„ํ–ˆ์Šต๋‹ˆ๋‹ค. Leaky Integrate and Fire ๋ชจ๋ธ์„ ์‚ฌ์šฉํ–ˆ์Šต๋‹ˆ๋‹ค.
๊ฐ€์ค‘์น˜ ํ–‰๋ ฌ์„ ์œ ์ „ ์•Œ๊ณ ๋ฆฌ์ฆ˜์„ ํ†ตํ•ด ํ•™์Šตํ•ฉ๋‹ˆ๋‹ค.
๋„คํŠธ์›Œํฌ์— ํŠน์ • ์ž๊ทน์„ ๊ฐ€ํ•œ ๋’ค ์ผ์ • ์‹œ๊ฐ„ ์ด๋‚ด๋กœ ์šด๋™๋‰ด๋Ÿฐ์ด ๋ฐ˜์‘ํ•  ์ˆ˜ ์žˆ๋„๋ก ์ตœ์ ํ™”ํ•ฉ๋‹ˆ๋‹ค.

์œ ์ „ ์•Œ๊ณ ๋ฆฌ์ฆ˜์„ ์‹คํ–‰ํ•˜๋Š” ๋ฐ ํ•„์š”ํ•œ ํ•จ์ˆ˜์™€ ํ•™์Šต ์‹คํ–‰ ์ฝ”๋“œ๊ฐ€ ์žˆ์Šต๋‹ˆ๋‹ค. ์‹คํ–‰ ์‹œ ํ•ด๋‹นํ•˜๋Š” ํŒŒ์ผ์„ ์ด์–ด์„œ ํ•™์Šตํ•˜๊ฑฐ๋‚˜ ์ƒˆ๋กœ ํ•™์Šตํ•ฉ๋‹ˆ๋‹ค.

ํ•™์Šต์‹œํ‚จ ๊ฐ€์ค‘์น˜๋ฅผ ์‚ฌ์šฉํ•ฉ๋‹ˆ๋‹ค. pygame์œผ๋กœ ์ด๋ฃจ์–ด์ ธ ์žˆ์œผ๋ฉฐ, ๋งˆ์šฐ์Šค๋ฅผ ํด๋ฆญํ•ด ์‹ ๊ฒฝ๋ง์— ์ž๊ทน์„ ์ฃผ๊ณ , ๋ฐ˜์‘์„ ๊ด€์ฐฐํ•  ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค.
์œ ํŠœ๋ธŒ ์˜์ƒ ์—์„œ ์‹คํ–‰ ์˜์ƒ์„ ํ™•์ธํ•  ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค.

networkx๋ฅผ ์ด์šฉํ•ด ๊ฐ ๋‰ด๋Ÿฐ ๋…ธ๋“œ๊ฐ€ ์–ด๋А ์ •๋„์˜ ๊ฐ•๋„๋กœ ์—ฐ๊ฒฐ๋˜์–ด ์žˆ๋Š”์ง€ ์–‘๋ฐฉํ–ฅ ๊ทธ๋ž˜ํ”„๋กœ ๋‚˜ํƒ€๋ƒ…๋‹ˆ๋‹ค. ๊ฐ€์ค‘์น˜์˜ heatmap๋„ ๊ด€์ฐฐํ•  ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค. node

๊ธฐํƒ€

ws_gen=118_i=16_s=4_m=4_98.npy๋Š” ํ•œ ์„ธ๋Œ€ ๋‹น 200๊ฐœ์˜ ๊ฐœ์ฒด๊ฐ€ ์กด์žฌํ•˜๋ฉฐ, 118์„ธ๋Œ€ ์ง„ํ™” ๊ฒฐ๊ณผ ํ•œ ์„ธ๋Œ€์˜ ํ‰๊ท  ์ •ํ™•๋„๊ฐ€ 98% ์ด์ƒ์ธ ๊ฐ€์ค‘์น˜ ํ–‰๋ ฌ ๋ฐ์ดํ„ฐ์ž…๋‹ˆ๋‹ค.
์‹œ๋ฎฌ๋ ˆ์ด์…˜์„ ์œ„ํ•ด playground.py์— ์‚ฌ์šฉ๋œ ws_ext_gen=118_acc=98.npy๋Š” ์œ„์˜ 200๊ฐœ์˜ ๊ฐœ์ฒด ์ค‘, ๋ชจ๋“  ์ž๊ทน์— ๋Œ€ํ•ด์„œ ์˜ฌ๋ฐ”๋ฅด๊ฒŒ ๋ฐ˜์‘ํ•˜๋Š” ๊ฐ€์ค‘์น˜ ํ–‰๋ ฌ์„ ํ•œ ๊ฐ€์ง€ ์„ ํƒํ•œ ๊ฒƒ์ž…๋‹ˆ๋‹ค.

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LIF-based SNN with Genetic Optimization Technique

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