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simple artificial neural network

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Name		Name	Last commit message	Last commit date
Latest commit History 42 Commits
advanced_version		advanced_version
data		data
pic		pic
README.md		README.md
activation_func.py		activation_func.py
neural_net.py		neural_net.py
neural_node.py		neural_node.py
train_and_test.py		train_and_test.py

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ann

simple artificial neural network

具体数学原理参见博客，推导很详尽。
根目录下的py文件为原始实现，advanced_version使用numpy实现。
Iris数据集上效果：
- sigmoid:
  - 1000轮: 0.984375
  - 2000轮: 0.992188
- tanh:
  - 1000轮: 0.992188
  - 2000轮: 0.992188
Iris数据集上，tanh收敛更快

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simple artificial neural network

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