VisualDL¶

class paddle.callbacks. VisualDL ( log_dir ) [源代码] ¶: VisualDL 是一个 visualdl( 飞桨可视化分析工具 )的回调类。该类将训练过程中的损失值和评价指标储存至日志文件中后，启动面板即可查看可视化结果。

参数¶

log_dir (str) - 输出日志保存的路径。

代码示例¶

          import paddle
import paddle.vision.transforms as T
from paddle.static import InputSpec

inputs = [InputSpec([-1, 1, 28, 28], 'float32', 'image')]
labels = [InputSpec([None, 1], 'int64', 'label')]

transform = T.Compose([
    T.Transpose(),
    T.Normalize([127.5], [127.5])
])
train_dataset = paddle.vision.datasets.MNIST(mode='train', transform=transform)
eval_dataset = paddle.vision.datasets.MNIST(mode='test', transform=transform)

net = paddle.vision.models.LeNet()
model = paddle.Model(net, inputs, labels)

optim = paddle.optimizer.Adam(0.001, parameters=net.parameters())
model.prepare(optimizer=optim,
            loss=paddle.nn.CrossEntropyLoss(),
            metrics=paddle.metric.Accuracy())

## uncomment following lines to fit model with visualdl callback function
# callback = paddle.callbacks.VisualDL(log_dir='visualdl_log_dir')
# model.fit(train_dataset, eval_dataset, batch_size=64, callbacks=callback)

         