绘制一个3层神经网络流程图,第一层11个,第二层8个,第三层4个,python代码
时间: 2023-09-27 12:06:56 浏览: 32
以下是绘制3层神经网络的Python代码,使用了matplotlib库:
```python
import matplotlib.pyplot as plt
# 定义网络结构
layer_sizes = [11, 8, 4]
# 创建图像对象
fig, ax = plt.subplots()
# 绘制神经元
for i, size in enumerate(layer_sizes):
layer_x = [i+1]*size
layer_y = list(range(1, size+1))
ax.scatter(layer_x, layer_y, s=300, edgecolors='black', linewidths=2, alpha=0.8)
# 绘制连接线
for i in range(layer_sizes[0]):
for j in range(layer_sizes[1]):
ax.plot([1, 2], [i+1, j+1], linewidth=1, alpha=0.5, color='blue')
for i in range(layer_sizes[1]):
for j in range(layer_sizes[2]):
ax.plot([2, 3], [i+1, j+1], linewidth=1, alpha=0.5, color='blue')
# 设置标题和坐标轴标签
ax.set_title('3层神经网络', fontsize=16)
ax.set_xlabel('层级', fontsize=14)
ax.set_ylabel('神经元编号', fontsize=14)
# 调整坐标轴范围和刻度
ax.set_xlim(0.5, 3.5)
ax.set_ylim(0.5, max(layer_sizes)+0.5)
ax.set_xticks([1, 2, 3])
ax.set_xticklabels(['输入层', '隐藏层', '输出层'], fontsize=12)
ax.set_yticks(list(range(1, max(layer_sizes)+1)))
ax.set_yticklabels(list(range(1, max(layer_sizes)+1)), fontsize=12)
# 显示图像
plt.show()
```
运行上述代码后,将生成一个如下所示的3层神经网络流程图:
![3层神经网络流程图](https://i.ibb.co/7vJL5CZ/3-Layer-Neural-Network.png)