wehub-resource-sync
131 lines
3.2 KiB
Python
131 lines
3.2 KiB
Python
"""
|
|
This module contains the Task enum, which internally represents the tasks
|
|
supported by Datalab, so that the appropriate task-specific logic can be applied.
|
|
This class and associated naming conventions are subject to change and is not meant
|
|
to be used by users.
|
|
"""
|
|
|
|
from enum import Enum
|
|
|
|
|
|
class Task(Enum):
|
|
"""
|
|
Represents a task supported by Datalab.
|
|
|
|
Datalab supports the following tasks:
|
|
|
|
* **Classification**: for predicting discrete class labels.
|
|
* **Regression**: for predicting continuous numerical values.
|
|
* **Multilabel**: for predicting multiple binary labels simultaneously.
|
|
|
|
Example
|
|
-------
|
|
>>> task = Task.CLASSIFICATION
|
|
>>> task
|
|
<Task.CLASSIFICATION: 'classification'>
|
|
"""
|
|
|
|
CLASSIFICATION = "classification"
|
|
"""Classification task."""
|
|
REGRESSION = "regression"
|
|
"""Regression task."""
|
|
MULTILABEL = "multilabel"
|
|
"""Multilabel task."""
|
|
|
|
def __str__(self):
|
|
"""
|
|
Returns the string representation of the task.
|
|
|
|
Returns:
|
|
str: The string representation of the task.
|
|
"""
|
|
return self.value
|
|
|
|
@classmethod
|
|
def from_str(cls, task_str: str) -> "Task":
|
|
"""
|
|
Converts a string representation of a task to a Task enum value.
|
|
|
|
Parameters
|
|
----------
|
|
task_str :
|
|
The string representation of the task.
|
|
|
|
Returns
|
|
-------
|
|
Task :
|
|
The corresponding Task enum value.
|
|
|
|
Raises
|
|
------
|
|
ValueError :
|
|
If the provided task_str is not a valid task supported by Datalab.
|
|
|
|
Examples
|
|
--------
|
|
>>> Task.from_str("classification")
|
|
<Task.CLASSIFICATION: 'classification'>
|
|
>>> print(Task.from_str("regression"))
|
|
regression
|
|
"""
|
|
_value_to_enum = {task.value: task for task in Task}
|
|
try:
|
|
return _value_to_enum[task_str]
|
|
except KeyError:
|
|
valid_tasks = list(_value_to_enum.keys())
|
|
raise ValueError(f"Invalid task: {task_str}. Datalab only supports {valid_tasks}.")
|
|
|
|
@property
|
|
def is_classification(self):
|
|
"""
|
|
Checks if the task is classification.
|
|
|
|
Returns
|
|
-------
|
|
bool :
|
|
True if the task is classification, False otherwise.
|
|
|
|
Examples
|
|
--------
|
|
>>> task = Task.CLASSIFICATION
|
|
>>> print(task.is_classification)
|
|
True
|
|
"""
|
|
return self == Task.CLASSIFICATION
|
|
|
|
@property
|
|
def is_regression(self):
|
|
"""
|
|
Checks if the task is regression.
|
|
|
|
Returns
|
|
-------
|
|
bool :
|
|
True if the task is regression, False otherwise.
|
|
|
|
Examples
|
|
--------
|
|
>>> task = Task.CLASSIFICATION
|
|
>>> print(task.is_regression)
|
|
False
|
|
"""
|
|
return self == Task.REGRESSION
|
|
|
|
@property
|
|
def is_multilabel(self):
|
|
"""
|
|
Checks if the task is multilabel.
|
|
|
|
Returns
|
|
-------
|
|
bool :
|
|
True if the task is multilabel, False otherwise.
|
|
|
|
Examples
|
|
--------
|
|
>>> task = Task.CLASSIFICATION
|
|
>>> print(task.is_multilabel)
|
|
False
|
|
"""
|
|
return self == Task.MULTILABEL
|