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Commit 0b40b241 authored by Daniel CARRON's avatar Daniel CARRON :b:
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Removed maker functions

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......@@ -2,8 +2,6 @@
#
# SPDX-License-Identifier: GPL-3.0-or-later
import random
import torch
from torchvision.transforms import RandomRotation
......@@ -14,151 +12,6 @@ RANDOM_ROTATION = [RandomRotation(15)]
"""Shared data augmentation based on random rotation only."""
def make_subset(samples, transforms=[], prefixes=[], suffixes=[]):
"""Creates a new data set, applying transforms.
.. note::
This is a convenience function for our own dataset definitions inside
this module, guaranteeting homogenity between dataset definitions
provided in this package. It assumes certain strategies for data
augmentation that may not be translatable to other applications.
Parameters
----------
samples : list
List of delayed samples
transforms : list
A list of transforms that needs to be applied to all samples in the set
prefixes : list
A list of data augmentation operations that needs to be applied
**before** the transforms above
suffixes : list
A list of data augmentation operations that needs to be applied
**after** the transforms above
Returns
-------
subset : :py:class:`ptbench.data.utils.SampleListDataset`
A pre-formatted dataset that can be fed to one of our engines
"""
from ...data.utils import SampleListDataset as wrapper
return wrapper(samples, prefixes + transforms + suffixes)
def make_dataset(
subsets_groups, transforms=[], t_transforms=[], post_transforms=[]
):
"""Creates a new configuration dataset from a list of dictionaries and
transforms.
This function takes as input a list of dictionaries as those that can be
returned by :py:meth:`ptbench.data.dataset.JSONDataset.subsets`
mapping protocol names (such as ``train``, ``dev`` and ``test``) to
:py:class:`ptbench.data.sample.DelayedSample` lists, and a set of
transforms, and returns a dictionary applying
:py:class:`ptbench.data.utils.SampleListDataset` to these
lists, and our standard data augmentation if a ``train`` set exists.
For example, if ``subsets`` is composed of two sets named ``train`` and
``test``, this function will yield a dictionary with the following entries:
* ``__train__``: Wraps the ``train`` subset, includes data augmentation
(note: datasets with names starting with ``_`` (underscore) are excluded
from prediction and evaluation by default, as they contain data
augmentation transformations.)
* ``train``: Wraps the ``train`` subset, **without** data augmentation
* ``test``: Wraps the ``test`` subset, **without** data augmentation
.. note::
This is a convenience function for our own dataset definitions inside
this module, guaranteeting homogenity between dataset definitions
provided in this package. It assumes certain strategies for data
augmentation that may not be translatable to other applications.
Parameters
----------
subsets : list
A list of dictionaries that contains the delayed sample lists
for a number of named lists. The subsets will be aggregated in one
final subset. If one of the keys is ``train``, our standard dataset
augmentation transforms are appended to the definition of that subset.
All other subsets remain un-augmented.
transforms : list
A list of transforms that needs to be applied to all samples in the set
t_transforms : list
A list of transforms that needs to be applied to the train samples
post_transforms : list
A list of transforms that needs to be applied to all samples in the set
after all the other transforms
Returns
-------
dataset : dict
A pre-formatted dataset that can be fed to one of our engines. It maps
string names to :py:class:`ptbench.data.utils.SampleListDataset`'s.
"""
retval = {}
if len(subsets_groups) == 1:
subsets = subsets_groups[0]
else:
# If multiple subsets groups: aggregation
aggregated_subsets = {}
for subsets in subsets_groups:
for key in subsets.keys():
if key in aggregated_subsets:
aggregated_subsets[key] += subsets[key]
# Shuffle if data comes from multiple datasets
random.shuffle(aggregated_subsets[key])
else:
aggregated_subsets[key] = subsets[key]
subsets = aggregated_subsets
# Add post_transforms after t_transforms for the train set
t_transforms += post_transforms
for key in subsets.keys():
retval[key] = make_subset(
subsets[key], transforms=transforms, suffixes=post_transforms
)
if key == "train":
retval["__train__"] = make_subset(
subsets[key], transforms=transforms, suffixes=(t_transforms)
)
if key == "validation":
# also use it for validation during training
retval["__valid__"] = retval[key]
if (
("__train__" in retval)
and ("train" in retval)
and ("__valid__" not in retval)
):
# if the dataset does not have a validation set, we use the unaugmented
# training set as validation set
retval["__valid__"] = retval["train"]
return retval
def get_samples_weights(dataset):
"""Compute the weights of all the samples of the dataset to balance it
using the sampler of the dataloader.
......
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