A utility interface for managing summary writing.



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Flushes the the recorded summaries.


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Returns the underlying summary writer for scoped writers.


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Writes summaries for the given dictionary of values.

The summary_dict can be any nested dict. The SummaryManager should recursively creates summaries, yielding a hierarchy of summaries which will then be reflected in the corresponding UIs.

For example, users may evaluate on multiple datasets and return summary_dict as a nested dictionary:

    "dataset1": {
        "loss": loss1,
        "accuracy": accuracy1
    "dataset2": {
        "loss": loss2,
        "accuracy": accuracy2

This will create two set of summaries, "dataset1" and "dataset2". Each summary dict will contain summaries including both "loss" and "accuracy".

summary_dict A dictionary of values. If any value in summary_dict is itself a dictionary, then the function will create a new summary_dict with name given by the corresponding key. This is performed recursively. Leaf values are then summarized using the parent relative path.