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CNN方法入门指南:从基础原理到实战应用详解

趣闻2025-05-27 18:21:53

鍝庯紝浣犲彂鐜版病锛熺幇鍦ㄨ繛鎵嬫満鐩稿唽閮借兘鑷姩璇嗗埆浜鸿劯浜嗭紝鍋滆溅鍦洪椄鏈虹湅涓€鐪艰溅鐗屽氨鎶潌锛岃繖浜?鑱槑"鐨勬搷浣滆儗鍚庡晩锛屽叾瀹為兘钘忕潃涓€涓彨CNN鐨勬妧鏈€備粖澶╁挶浠氨鏉ュ敔鍞犺繖涓璁$畻鏈?闀跨溂鐫?鐨勭粷娲烩€斺€斿嵎绉缁忕綉缁滐紒

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涓€銆丆NN涓哄暐姣旇倝鐪艰繕鍘夊锛?/h3>

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涓句釜鏍楀瓙馃尠锛氫綘鏁欎笁宀佸▋璁よ嫻鏋滐紝浼氭寚鐫€褰㈢姸棰滆壊璇寸壒寰佸鍚э紵CNN骞茬殑浜嬪樊涓嶅锛?/p>

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浜屻€丆NN鐨勪笁澶х湅瀹舵湰棰?/h3>

1. 鍗风Н灞傦細鑷甫鏀惧ぇ闀滅殑渚﹀療鍏?/h4>

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涓夈€佹墜鎶婃墜鎼缓绗竴涓狢NN妯″瀷

鍜变滑鐢≒ython鍜孠eras婕旂ず涓瀬绠€鐗堬紝鍏堟悶鎳傛祦绋嬶細

python澶嶅埗
from keras.models import Sequential
from keras.layers import Conv2D, MaxPooling2D, Flatten, Dense

model = Sequential()
# 绗竴缁勬斁澶ч暅
model.add(Conv2D(32, (3,3), activation='relu', input_shape=(64,64,3)))
# 鍒掗噸鐐?/span>
model.add(MaxPooling2D(pool_size=(2,2)))
# 鍐嶆潵涓€缁勯珮绾ф斁澶ч暅
model.add(Conv2D(64, (3,3), activation='relu'))
# 鍐嶅垝閲嶇偣
model.add(MaxPooling2D(pool_size=(2,2)))
# 鎷间箰楂?/span>
model.add(Flatten())
# 鏈€缁堝喅绛?/span>
model.add(Dense(units=128, activation='relu'))
model.add(Dense(units=1, activation='sigmoid'))

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浜斻€佷釜浜鸿娉粡楠岃皥

鎼炰簡涓夊勾CV椤圭洰锛岃鐐规暀绉戜功涓嶄細鍐欑殑锛?/p>

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锛堝帇浣庡0闊筹級鍋峰伔璇达紝Kaggle姣旇禌閲岋紝闆嗘垚澶氫釜CNN妯″瀷缁忓父鑳藉啿杩涘墠鎺掋€備笉杩囩湡瀹為」鐩鑰冭檻鎴愭湰锛屽埆涓轰簡1%鐨勬彁鍗囧鑺变笁鍊嶇畻鍔?..


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浣犱互涓哄畠鍙兘澶勭悊鍥惧儚锛熸牸灞€鎵撳紑锛?/p>

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锛堟枃绔犳垱鐒惰€屾锛屽儚绐佺劧鎺ュ埌鐢佃瘽鍖嗗繖缁撴潫锛夊搸鍛€瀹㈡埛鎵炬垜鏀规ā鍨嬩簡锛屼笅娆″啀鑱婂叾浠栫粏鑺傦紒璁板緱鍔ㄦ墜瀹炶返鎵嶆槸纭亾鐞嗭紝鍏夌湅涓嶅姩姘歌繙瀛︿笉浼氬搱~

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