mirror of
https://github.com/wassname/pytorch-ts.git
synced 2026-07-15 11:25:33 +08:00
119 lines
3.3 KiB
Python
119 lines
3.3 KiB
Python
# Copyright 2018 Amazon.com, Inc. or its affiliates. All Rights Reserved.
|
|
#
|
|
# Licensed under the Apache License, Version 2.0 (the "License").
|
|
# You may not use this file except in compliance with the License.
|
|
# A copy of the License is located at
|
|
#
|
|
# http://www.apache.org/licenses/LICENSE-2.0
|
|
#
|
|
# or in the "license" file accompanying this file. This file is distributed
|
|
# on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
|
|
# express or implied. See the License for the specific language governing
|
|
# permissions and limitations under the License.
|
|
|
|
from collections import Counter
|
|
from typing import Any, Dict, List
|
|
|
|
from pts.core.component import validated
|
|
from pts.dataset import DataEntry
|
|
from .transform import SimpleTransformation, MapTransformation
|
|
|
|
|
|
class RenameFields(SimpleTransformation):
|
|
"""
|
|
Rename fields using a mapping
|
|
|
|
Parameters
|
|
----------
|
|
mapping
|
|
Name mapping `input_name -> output_name`
|
|
"""
|
|
@validated()
|
|
def __init__(self, mapping: Dict[str, str]) -> None:
|
|
self.mapping = mapping
|
|
values_count = Counter(mapping.values())
|
|
for new_key, count in values_count.items():
|
|
assert count == 1, f"Mapped key {new_key} occurs multiple time"
|
|
|
|
def transform(self, data: DataEntry):
|
|
for key, new_key in self.mapping.items():
|
|
if key not in data:
|
|
continue
|
|
assert new_key not in data
|
|
data[new_key] = data[key]
|
|
del data[key]
|
|
return data
|
|
|
|
|
|
class RemoveFields(SimpleTransformation):
|
|
|
|
@validated()
|
|
def __init__(self, field_names: List[str]) -> None:
|
|
self.field_names = field_names
|
|
|
|
def transform(self, data: DataEntry) -> DataEntry:
|
|
for k in self.field_names:
|
|
if k in data.keys():
|
|
del data[k]
|
|
return data
|
|
|
|
|
|
class SetField(SimpleTransformation):
|
|
"""
|
|
Sets a field in the dictionary with the given value.
|
|
|
|
Parameters
|
|
----------
|
|
output_field
|
|
Name of the field that will be set
|
|
value
|
|
Value to be set
|
|
"""
|
|
@validated()
|
|
def __init__(self, output_field: str, value: Any) -> None:
|
|
self.output_field = output_field
|
|
self.value = value
|
|
|
|
def transform(self, data: DataEntry) -> DataEntry:
|
|
data[self.output_field] = self.value
|
|
return data
|
|
|
|
|
|
class SetFieldIfNotPresent(SimpleTransformation):
|
|
"""Sets a field in the dictionary with the given value, in case it does not
|
|
exist already.
|
|
|
|
Parameters
|
|
----------
|
|
output_field
|
|
Name of the field that will be set
|
|
value
|
|
Value to be set
|
|
"""
|
|
@validated()
|
|
def __init__(self, field: str, value: Any) -> None:
|
|
self.output_field = field
|
|
self.value = value
|
|
|
|
def transform(self, data: DataEntry) -> DataEntry:
|
|
if self.output_field not in data.keys():
|
|
data[self.output_field] = self.value
|
|
return data
|
|
|
|
|
|
class SelectFields(MapTransformation):
|
|
"""
|
|
Only keep the listed fields
|
|
|
|
Parameters
|
|
----------
|
|
input_fields
|
|
List of fields to keep.
|
|
"""
|
|
@validated()
|
|
def __init__(self, input_fields: List[str]) -> None:
|
|
self.input_fields = input_fields
|
|
|
|
def map_transform(self, data: DataEntry, is_train: bool) -> DataEntry:
|
|
return {f: data[f] for f in self.input_fields}
|