TensorFlow定义记录和汇总操作

2018-11-13 11:45 更新

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""记录和汇总操作""

# pylint: disable=protected-access from __future__ import absolute_import from __future__ import division from __future__ import print_function from tensorflow.python.framework import dtypes from tensorflow.python.framework import ops from tensorflow.python.ops import gen_logging_ops # go/tf-wildcard-import # pylint: disable=wildcard-import from tensorflow.python.ops.gen_logging_ops import * # pylint: enable=wildcard-import from tensorflow.python.util.deprecation import deprecated # The python wrapper for Assert is in control_flow_ops, as the Assert # call relies on certain conditionals for its dependencies. Use # control_flow_ops.Assert. # Assert and Print are special symbols in python, so we must # use an upper-case version of them. def Print(input_, data, message=None, first_n=None, summarize=None, name=None): """Prints a list of tensors. This is an identity op with the side effect of printing `data` when evaluating. Note: This op prints to the standard error. It is not currently compatible with jupyter notebook (printing to the notebook *server's* output, not into the notebook). Args: input_: A tensor passed through this op. data: A list of tensors to print out when op is evaluated. message: A string, prefix of the error message. first_n: Only log `first_n` number of times. Negative numbers log always; this is the default. summarize: Only print this many entries of each tensor. If None, then a maximum of 3 elements are printed per input tensor. name: A name for the operation (optional). Returns: Same tensor as `input_`. """ return gen_logging_ops._print(input_, data, message, first_n, summarize, name) @ops.RegisterGradient("Print") def _PrintGrad(op, *grad): return list(grad) + [None] * (len(op.inputs) - 1) def _Collect(val, collections, default_collections): if collections is None: collections = default_collections for key in collections: ops.add_to_collection(key, val) @deprecated( "2016-11-30", "Please switch to tf.summary.histogram. Note that " "tf.summary.histogram uses the node name instead of the tag. " "This means that TensorFlow will automatically de-duplicate summary " "names based on the scope they are created in.") def histogram_summary(tag, values, collections=None, name=None): # pylint: disable=line-too-long """Outputs a `Summary` protocol buffer with a histogram. This ops is deprecated. Please switch to tf.summary.histogram. For an explanation of why this op was deprecated, and information on how to migrate, look ['here'](https://github.com/tensorflow/tensorflow/blob/master/tensorflow/contrib/deprecated/__init__.py) The generated [`Summary`](https://www.tensorflow.org/code/tensorflow/core/framework/summary.proto) has one summary value containing a histogram for `values`. This op reports an `InvalidArgument` error if any value is not finite. Args: tag: A `string` `Tensor`. 0-D. Tag to use for the summary value. values: A real numeric `Tensor`. Any shape. Values to use to build the histogram. collections: Optional list of graph collections keys. The new summary op is added to these collections. Defaults to `[GraphKeys.SUMMARIES]`. name: A name for the operation (optional). Returns: A scalar `Tensor` of type `string`. The serialized `Summary` protocol buffer. """ with ops.name_scope(name, "HistogramSummary", [tag, values]) as scope: val = gen_logging_ops._histogram_summary( tag=tag, values=values, name=scope) _Collect(val, collections, [ops.GraphKeys.SUMMARIES]) return val @deprecated( "2016-11-30", "Please switch to tf.summary.image. Note that " "tf.summary.image uses the node name instead of the tag. " "This means that TensorFlow will automatically de-duplicate summary " "names based on the scope they are created in. Also, the max_images " "argument was renamed to max_outputs.") def image_summary(tag, tensor, max_images=3, collections=None, name=None): # pylint: disable=line-too-long """Outputs a `Summary` protocol buffer with images. For an explanation of why this op was deprecated, and information on how to migrate, look ['here'](https://github.com/tensorflow/tensorflow/blob/master/tensorflow/contrib/deprecated/__init__.py) The summary has up to `max_images` summary values containing images. The images are built from `tensor` which must be 4-D with shape `[batch_size, height, width, channels]` and where `channels` can be: * 1: `tensor` is interpreted as Grayscale. * 3: `tensor` is interpreted as RGB. * 4: `tensor` is interpreted as RGBA. The images have the same number of channels as the input tensor. For float input, the values are normalized one image at a time to fit in the range `[0, 255]`. `uint8` values are unchanged. The op uses two different normalization algorithms: * If the input values are all positive, they are rescaled so the largest one is 255. * If any input value is negative, the values are shifted so input value 0.0 is at 127. They are then rescaled so that either the smallest value is 0, or the largest one is 255. The `tag` argument is a scalar `Tensor` of type `string`. It is used to build the `tag` of the summary values: * If `max_images` is 1, the summary value tag is '*tag*/image'. * If `max_images` is greater than 1, the summary value tags are generated sequentially as '*tag*/image/0', '*tag*/image/1', etc. Args: tag: A scalar `Tensor` of type `string`. Used to build the `tag` of the summary values. tensor: A 4-D `uint8` or `float32` `Tensor` of shape `[batch_size, height, width, channels]` where `channels` is 1, 3, or 4. max_images: Max number of batch elements to generate images for. collections: Optional list of ops.GraphKeys. The collections to add the summary to. Defaults to [ops.GraphKeys.SUMMARIES] name: A name for the operation (optional). Returns: A scalar `Tensor` of type `string`. The serialized `Summary` protocol buffer. """ with ops.name_scope(name, "ImageSummary", [tag, tensor]) as scope: val = gen_logging_ops._image_summary( tag=tag, tensor=tensor, max_images=max_images, name=scope) _Collect(val, collections, [ops.GraphKeys.SUMMARIES]) return val @deprecated( "2016-11-30", "Please switch to tf.summary.audio. Note that " "tf.summary.audio uses the node name instead of the tag. " "This means that TensorFlow will automatically de-duplicate summary " "names based on the scope they are created in.") def audio_summary(tag, tensor, sample_rate, max_outputs=3, collections=None, name=None): # pylint: disable=line-too-long """Outputs a `Summary` protocol buffer with audio. This op is deprecated. Please switch to tf.summary.audio. For an explanation of why this op was deprecated, and information on how to migrate, look ['here'](https://github.com/tensorflow/tensorflow/blob/master/tensorflow/contrib/deprecated/__init__.py) The summary has up to `max_outputs` summary values containing audio. The audio is built from `tensor` which must be 3-D with shape `[batch_size, frames, channels]` or 2-D with shape `[batch_size, frames]`. The values are assumed to be in the range of `[-1.0, 1.0]` with a sample rate of `sample_rate`. The `tag` argument is a scalar `Tensor` of type `string`. It is used to build the `tag` of the summary values: * If `max_outputs` is 1, the summary value tag is '*tag*/audio'. * If `max_outputs` is greater than 1, the summary value tags are generated sequentially as '*tag*/audio/0', '*tag*/audio/1', etc. Args: tag: A scalar `Tensor` of type `string`. Used to build the `tag` of the summary values. tensor: A 3-D `float32` `Tensor` of shape `[batch_size, frames, channels]` or a 2-D `float32` `Tensor` of shape `[batch_size, frames]`. sample_rate: A Scalar `float32` `Tensor` indicating the sample rate of the signal in hertz. max_outputs: Max number of batch elements to generate audio for. collections: Optional list of ops.GraphKeys. The collections to add the summary to. Defaults to [ops.GraphKeys.SUMMARIES] name: A name for the operation (optional). Returns: A scalar `Tensor` of type `string`. The serialized `Summary` protocol buffer. """ with ops.name_scope(name, "AudioSummary", [tag, tensor]) as scope: sample_rate = ops.convert_to_tensor(sample_rate, dtype=dtypes.float32, name="sample_rate") val = gen_logging_ops._audio_summary_v2(tag=tag, tensor=tensor, max_outputs=max_outputs, sample_rate=sample_rate, name=scope) _Collect(val, collections, [ops.GraphKeys.SUMMARIES]) return val @deprecated("2016-11-30", "Please switch to tf.summary.merge.") def merge_summary(inputs, collections=None, name=None): # pylint: disable=line-too-long """Merges summaries. This op is deprecated. Please switch to tf.summary.merge, which has identical behavior. This op creates a [`Summary`](https://www.tensorflow.org/code/tensorflow/core/framework/summary.proto) protocol buffer that contains the union of all the values in the input summaries. When the Op is run, it reports an `InvalidArgument` error if multiple values in the summaries to merge use the same tag. Args: inputs: A list of `string` `Tensor` objects containing serialized `Summary` protocol buffers. collections: Optional list of graph collections keys. The new summary op is added to these collections. Defaults to `[GraphKeys.SUMMARIES]`. name: A name for the operation (optional). Returns: A scalar `Tensor` of type `string`. The serialized `Summary` protocol buffer resulting from the merging. """ with ops.name_scope(name, "MergeSummary", inputs): val = gen_logging_ops._merge_summary(inputs=inputs, name=name) _Collect(val, collections, []) return val @deprecated("2016-11-30", "Please switch to tf.summary.merge_all.") def merge_all_summaries(key=ops.GraphKeys.SUMMARIES): """Merges all summaries collected in the default graph. This op is deprecated. Please switch to tf.summary.merge_all, which has identical behavior. Args: key: `GraphKey` used to collect the summaries. Defaults to `GraphKeys.SUMMARIES`. Returns: If no summaries were collected, returns None. Otherwise returns a scalar `Tensor` of type `string` containing the serialized `Summary` protocol buffer resulting from the merging. """ summary_ops = ops.get_collection(key) if not summary_ops: return None else: return merge_summary(summary_ops) def get_summary_op(): """Returns a single Summary op that would run all summaries. Either existing one from `SUMMARY_OP` collection or merges all existing summaries. Returns: If no summaries were collected, returns None. Otherwise returns a scalar `Tensor` of type `string` containing the serialized `Summary` protocol buffer resulting from the merging. """ summary_op = ops.get_collection(ops.GraphKeys.SUMMARY_OP) if summary_op is not None: if summary_op: summary_op = summary_op[0] else: summary_op = None if summary_op is None: summary_op = merge_all_summaries() if summary_op is not None: ops.add_to_collection(ops.GraphKeys.SUMMARY_OP, summary_op) return summary_op @deprecated( "2016-11-30", "Please switch to tf.summary.scalar. Note that " "tf.summary.scalar uses the node name instead of the tag. " "This means that TensorFlow will automatically de-duplicate summary " "names based on the scope they are created in. Also, passing a " "tensor or list of tags to a scalar summary op is no longer " "supported.") def scalar_summary(tags, values, collections=None, name=None): # pylint: disable=line-too-long """Outputs a `Summary` protocol buffer with scalar values. This ops is deprecated. Please switch to tf.summary.scalar. For an explanation of why this op was deprecated, and information on how to migrate, look ['here'](https://github.com/tensorflow/tensorflow/blob/master/tensorflow/contrib/deprecated/__init__.py) The input `tags` and `values` must have the same shape. The generated summary has a summary value for each tag-value pair in `tags` and `values`. Args: tags: A `string` `Tensor`. Tags for the summaries. values: A real numeric Tensor. Values for the summaries. collections: Optional list of graph collections keys. The new summary op is added to these collections. Defaults to `[GraphKeys.SUMMARIES]`. name: A name for the operation (optional). Returns: A scalar `Tensor` of type `string`. The serialized `Summary` protocol buffer. """ with ops.name_scope(name, "ScalarSummary", [tags, values]) as scope: val = gen_logging_ops._scalar_summary(tags=tags, values=values, name=scope) _Collect(val, collections, [ops.GraphKeys.SUMMARIES]) return val ops.NotDifferentiable("HistogramSummary") ops.NotDifferentiable("ImageSummary") ops.NotDifferentiable("AudioSummary") ops.NotDifferentiable("AudioSummaryV2") ops.NotDifferentiable("MergeSummary") ops.NotDifferentiable("ScalarSummary")
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