code: def AlexNet_v1(im_height=224, im_width=224, class_num=1000):
      # tensorflow中的tensor通道排序是NHWC
      input_image = layers.Input(
          shape=(im_height, im_width, 3), dtype="float32"
      )  # output(None, 224, 224, 3)
      x = layers.ZeroPadding2D(((1, 2), (1, 2)))(
          input_image
      )  # output(None, 227, 227, 3)
      x = layers.Conv2D(
          48, kernel_size=11, strides=4, activation="relu"
      )(
          x
      )  # output(None, 55, 55, 48)
      x = layers.MaxPool2D(pool_size=3, strides=2)(
          x
      )  # output(None, 27, 27, 48)
      x = layers.Conv2D(
          128, kernel_size=5, padding="same", activation="relu"
      )(
          x
      )  # output(None, 27, 27, 128)
      x = layers.MaxPool2D(pool_size=3, strides=2)(
          x
      )  # output(None, 13, 13, 128)
      x = layers.Conv2D(
          192, kernel_size=3, padding="same", activation="relu"
      )(
          x
      )  # output(None, 13, 13, 192)
      x = layers.Conv2D(
          192, kernel_size=3, padding="same", activation="relu"
      )(
          x
      )  # output(None, 13, 13, 192)
      x = layers.Conv2D(
          128, kernel_size=3, padding="same", activation="relu"
      )(
          x
      )  # output(None, 13, 13, 128)
      x = layers.MaxPool2D(pool_size=3, strides=2)(
          x
      )  # output(None, 6, 6, 128)
  
      x = layers.Flatten()(x)  # output(None, 6*6*128)
      x = layers.Dropout(0.2)(x)
      x = layers.Dense(2048, activation="relu")(x)  # output(None, 2048)
      x = layers.Dropout(0.2)(x)
      x = layers.Dense(2048, activation="relu")(x)  # output(None, 2048)
      x = layers.Dense(class_num)(x)  # output(None, 5)
      predict = layers.Softmax()(x)
  
      model = models.Model(inputs=input_image, outputs=predict)
      return model
  
imports: from tensorflow.keras import layers, models, Model, Sequential
label_desc: Use image node_id 1 for calling a global function with example usage: AlexNet_v1(im_height, im_width, class_num) and returns: model