【发布时间】:2017-04-25 18:35:17
【问题描述】:
如何在不启动 GUI tensorboard --logdir=... 的情况下编写 Python 脚本来读取 Tensorboard 日志文件、提取损失和准确率等数值数据?
【问题讨论】:
标签: python machine-learning tensorflow tensorboard
如何在不启动 GUI tensorboard --logdir=... 的情况下编写 Python 脚本来读取 Tensorboard 日志文件、提取损失和准确率等数值数据?
【问题讨论】:
标签: python machine-learning tensorflow tensorboard
您可以使用 TensorBoard 的 Python 类或脚本来提取数据:
How can I export data from TensorBoard?
如果您想导出数据以在其他地方进行可视化(例如 iPython Notebook),这也是可能的。您可以直接依赖 TensorBoard 用于加载数据的底层类:
python/summary/event_accumulator.py(用于从单次运行中加载数据)或python/summary/event_multiplexer.py(用于从多次运行中加载数据,并使其保持井井有条)。这些类加载事件文件组,丢弃因 TensorFlow 崩溃而“孤立”的数据,并按标签组织数据。作为另一种选择,有一个脚本 (
tensorboard/scripts/serialize_tensorboard.py) 可以像 TensorBoard 一样加载 logdir,但将所有数据以 json 格式写入磁盘,而不是启动服务器。该脚本设置为制作“假 TensorBoard 后端”以进行测试,所以它的边缘有点粗糙。
# In [1]: from tensorflow.python.summary import event_accumulator # deprecated
In [1]: from tensorboard.backend.event_processing import event_accumulator
In [2]: ea = event_accumulator.EventAccumulator('events.out.tfevents.x.ip-x-x-x-x',
...: size_guidance={ # see below regarding this argument
...: event_accumulator.COMPRESSED_HISTOGRAMS: 500,
...: event_accumulator.IMAGES: 4,
...: event_accumulator.AUDIO: 4,
...: event_accumulator.SCALARS: 0,
...: event_accumulator.HISTOGRAMS: 1,
...: })
In [3]: ea.Reload() # loads events from file
Out[3]: <tensorflow.python.summary.event_accumulator.EventAccumulator at 0x7fdbe5ff59e8>
In [4]: ea.Tags()
Out[4]:
{'audio': [],
'compressedHistograms': [],
'graph': True,
'histograms': [],
'images': [],
'run_metadata': [],
'scalars': ['Loss', 'Epsilon', 'Learning_rate']}
In [5]: ea.Scalars('Loss')
Out[5]:
[ScalarEvent(wall_time=1481232633.080754, step=1, value=1.6365480422973633),
ScalarEvent(wall_time=1481232633.2001867, step=2, value=1.2162202596664429),
ScalarEvent(wall_time=1481232633.3877788, step=3, value=1.4660096168518066),
ScalarEvent(wall_time=1481232633.5749283, step=4, value=1.2405034303665161),
ScalarEvent(wall_time=1481232633.7419815, step=5, value=0.897326648235321),
...]
size_guidance: Information on how much data the EventAccumulator should
store in memory. The DEFAULT_SIZE_GUIDANCE tries not to store too much
so as to avoid OOMing the client. The size_guidance should be a map
from a `tagType` string to an integer representing the number of
items to keep per tag for items of that `tagType`. If the size is 0,
all events are stored.
【讨论】:
from tensorflow.tensorboard.backend.event_processing import event_accumulator more info here
from tensorboard.backend.event_processing import event_accumulator
TensorFlow 1.1+ 以来无法使用。
.csv 文件中。看看这里:github.com/Spenhouet/tensorboard-aggregator
要完成 user1501961 的回答,您可以使用 pandas pd.DataFrame(ea.Scalars('Loss)).to_csv('Loss.csv') 轻松将标量列表导出到 csv 文件
【讨论】: