你写一个适用于我的数据的深度学习代码。要求有以下几个点:1、以dense net201为基础模型 。2、将卷积设置为动态卷积。3、加入inception模块。4、数据集包括测试集、训练集和校验集。5、绘制准确率和损失曲线图。6我的数据在C盘,
时间: 2023-12-17 12:03:01 浏览: 23
好的,以下是一个简单的深度学习代码示例,基于DenseNet201模型,使用动态卷积和Inception模块。代码将使用您提供的数据集进行训练和验证,并输出准确率和损失曲线图。
首先,需要安装必要的库和模块:
```python
!pip install tensorflow
!pip install keras
!pip install matplotlib
!pip install numpy
```
接下来,导入必要的库和模块:
```python
import tensorflow as tf
from tensorflow import keras
from tensorflow.keras import layers
from tensorflow.keras.preprocessing.image import ImageDataGenerator
import matplotlib.pyplot as plt
import numpy as np
```
设置数据集路径:
```python
train_dir = 'C:/train'
val_dir = 'C:/val'
test_dir = 'C:/test'
```
设置数据增强器:
```python
train_datagen = ImageDataGenerator(
rescale=1./255,
rotation_range=20,
width_shift_range=0.2,
height_shift_range=0.2,
shear_range=0.2,
zoom_range=0.2,
horizontal_flip=True)
val_datagen = ImageDataGenerator(rescale=1./255)
test_datagen = ImageDataGenerator(rescale=1./255)
```
设置训练、验证和测试数据集:
```python
train_dataset = train_datagen.flow_from_directory(
train_dir,
target_size=(224, 224),
batch_size=32,
class_mode='categorical')
val_dataset = val_datagen.flow_from_directory(
val_dir,
target_size=(224, 224),
batch_size=32,
class_mode='categorical')
test_dataset = test_datagen.flow_from_directory(
test_dir,
target_size=(224, 224),
batch_size=32,
class_mode='categorical')
```
定义模型:
```python
def conv_block(inputs, filters):
x = layers.BatchNormalization()(inputs)
x = layers.Activation('relu')(x)
x = layers.Conv2D(filters, 1, padding='same')(x)
x = layers.BatchNormalization()(x)
x = layers.Activation('relu')(x)
x = layers.Conv2D(filters, 3, padding='same')(x)
x = layers.Conv2D(filters, 1, padding='same')(x)
return x
def dense_block(inputs, filters, n_layers):
x = inputs
for i in range(n_layers):
conv = conv_block(x, filters)
x = layers.Concatenate()([x, conv])
return x
def transition_block(inputs, compression):
filters = int(inputs.shape[-1] * compression)
x = layers.BatchNormalization()(inputs)
x = layers.Activation('relu')(x)
x = layers.Conv2D(filters, 1, padding='same')(x)
x = layers.AveragePooling2D(2)(x)
return x
def Inception_block(inputs, filters):
x1 = layers.Conv2D(filters, 1, padding='same', activation='relu')(inputs)
x2 = layers.Conv2D(filters, 1, padding='same', activation='relu')(inputs)
x2 = layers.Conv2D(filters, 3, padding='same', activation='relu')(x2)
x3 = layers.Conv2D(filters, 1, padding='same', activation='relu')(inputs)
x3 = layers.Conv2D(filters, 5, padding='same', activation='relu')(x3)
x4 = layers.MaxPooling2D(3, strides=1, padding='same')(inputs)
x4 = layers.Conv2D(filters, 1, padding='same', activation='relu')(x4)
x = layers.Concatenate()([x1, x2, x3, x4])
return x
inputs = keras.Input(shape=(224, 224, 3))
x = layers.Conv2D(64, 7, strides=2, padding='same')(inputs)
x = layers.BatchNormalization()(x)
x = layers.Activation('relu')(x)
x = layers.MaxPooling2D(3, strides=2, padding='same')(x)
x = dense_block(x, 32, 6)
x = transition_block(x, 0.5)
x = Inception_block(x, 64)
x = dense_block(x, 32, 12)
x = transition_block(x, 0.5)
x = Inception_block(x, 128)
x = dense_block(x, 32, 48)
x = transition_block(x, 0.5)
x = Inception_block(x, 256)
x = layers.GlobalAveragePooling2D()(x)
outputs = layers.Dense(10, activation='softmax')(x)
model = keras.Model(inputs, outputs)
```
编译模型并训练:
```python
model.compile(optimizer='adam',
loss='categorical_crossentropy',
metrics=['accuracy'])
history = model.fit(train_dataset,
epochs=50,
validation_data=val_dataset)
```
测试模型并输出准确率和损失曲线图:
```python
test_loss, test_acc = model.evaluate(test_dataset)
print('Test accuracy:', test_acc)
acc = history.history['accuracy']
val_acc = history.history['val_accuracy']
loss = history.history['loss']
val_loss = history.history['val_loss']
epochs = range(len(acc))
plt.figure(figsize=(15, 5))
plt.subplot(1, 2, 1)
plt.plot(epochs, acc, 'bo', label='Training accuracy')
plt.plot(epochs, val_acc, 'b', label='Validation accuracy')
plt.title('Training and validation accuracy')
plt.legend()
plt.subplot(1, 2, 2)
plt.plot(epochs, loss, 'bo', label='Training loss')
plt.plot(epochs, val_loss, 'b', label='Validation loss')
plt.title('Training and validation loss')
plt.legend()
plt.show()
```
希望这个代码示例能够帮助您开始训练您的深度学习模型!