





'''simple docstring'''


import numpy as np
class    a_     :





     def __init__(				self	:      Dict			,   lowercase	:      List[Any]=5			,   lowercase	:      Optional[Any]=5		):





        """simple docstring"""




        lowercase_    :Optional[Any]					    =				depth
        lowercase_    :Tuple					    =				0
        lowercase_    :List[Any]					    =				None
        lowercase_    :Any					    =				None
        lowercase_    :List[Any]					    =				min_leaf_size
        lowercase_    :Optional[int]					    =				None





     def 							lowercase__   (				self	:      List[str]			,   lowercase	:      Optional[int]			,   lowercase	:      Any		):





        """simple docstring"""




        if labels.ndim != 1:
           print("Error: Input labels must be one dimensional"		)

        return np.mean((labels - prediction) ** 2		)





     def 							lowercase__   (				self	:      Any			,   lowercase	:      Optional[Any]			,   lowercase	:      Optional[Any]		):





        """simple docstring"""




        if x.ndim != 1:
           print("Error: Input data set must be one dimensional"		)
           return
        if len(lowercase		) != len(lowercase		):
           print("Error: X and y have different lengths"		)
           return
        if y.ndim != 1:
           print("Error: Data set labels must be one dimensional"		)
           return

        if len(lowercase		) < 2 * self.min_leaf_size:
           lowercase_    :List[str]					    =				np.mean(lowercase		)
           return

        if self.depth == 1:
           lowercase_    :Tuple					    =				np.mean(lowercase		)
           return

        lowercase_    :List[str]					    =				0
        lowercase_    :Union[str, Any]					    =				self.mean_squared_error(lowercase			,   np.mean(lowercase		)		) * 2
        for i in range(len(lowercase		)		):
           if len(x[:i]		) < self.min_leaf_size:
              continue
           elif len(x[i:]		) < self.min_leaf_size:
              continue
           else:
              lowercase_    :Any					    =				self.mean_squared_error(x[:i]			,   np.mean(y[:i]		)		)
              lowercase_    :Tuple					    =				self.mean_squared_error(x[i:]			,   np.mean(y[i:]		)		)
              lowercase_    :Any					    =				error_left + error_right
              if error < min_error:
                 lowercase_    :Dict					    =				i
                 lowercase_    :Dict					    =				error

        if best_split != 0:
           lowercase_    :Dict					    =				x[:best_split]
           lowercase_    :Tuple					    =				y[:best_split]
           lowercase_    :Union[str, Any]					    =				x[best_split:]
           lowercase_    :Any					    =				y[best_split:]

           lowercase_    :Dict					    =				x[best_split]
           lowercase_    :Optional[int]					    =				DecisionTree(
               depth=self.depth - 1			,   min_leaf_size=self.min_leaf_size		)
           lowercase_    :int					    =				DecisionTree(
               depth=self.depth - 1			,   min_leaf_size=self.min_leaf_size		)
           self.left.train(lowercase			,   lowercase		)
           self.right.train(lowercase			,   lowercase		)
        else:
           lowercase_    :int					    =				np.mean(lowercase		)

        return







     def 							lowercase__   (				self	:      List[str]			,   lowercase	:      Any		):





        """simple docstring"""




        if self.prediction is not None:
           return self.prediction
        elif self.left or self.right is not None:
           if x >= self.decision_boundary:
              return self.right.predict(lowercase		)
           else:
              return self.left.predict(lowercase		)
        else:
           print("Error: Decision tree not yet trained"		)
           return None







class    a_     :





     @staticmethod
     def 							lowercase__   (				lowercase	:      Tuple			,   lowercase	:      Tuple		):





        """simple docstring"""




        lowercase_    :Any					    =				float(0		)
        for label in labels:
           squared_error_sum += (label - prediction) ** 2

        return float(squared_error_sum / labels.size		)







def 							UpperCAmelCase_						(		):
   lowercase_    :Any					    =				np.arange(-1.0			,1.0			,0.005				)
   lowercase_    :Optional[Any]					    =				np.sin(__lowerCamelCase				)

   lowercase_    :List[str]					    =				DecisionTree(depth=10			,min_leaf_size=10				)
   tree.train(__lowerCamelCase			,__lowerCamelCase				)

   lowercase_    :Dict					    =				(np.random.rand(10				) * 2) - 1
   lowercase_    :Dict					    =				np.array([tree.predict(__lowerCamelCase				) for x in test_cases]				)
   lowercase_    :str					    =				np.mean((predictions - test_cases) ** 2				)

   print("Test values: " + str(__lowerCamelCase				)				)
   print("Predictions: " + str(__lowerCamelCase				)				)
   print("Average error: " + str(__lowerCamelCase				)				)


if __name__ == "__main__":
 main()
 import doctest

 doctest.testmod(name='''mean_squarred_error''', verbose=True)









'''simple docstring'''


from copy import deepcopy
from unittest.case import TestCase

import pytest

from datasets.arrow_dataset import Dataset
from datasets.features import Audio, ClassLabel, Features, Image, Sequence, Value
from datasets.info import DatasetInfo
from datasets.tasks import (
    AudioClassification,
    AutomaticSpeechRecognition,
    ImageClassification,
    LanguageModeling,
    QuestionAnsweringExtractive,
    Summarization,
    TextClassification,
    task_template_from_dict,
)
from datasets.utils.py_utils import asdict


lowerCAmelCase      :  Tuple      							={
    '''id''': '''5733be284776f41900661182''',
    '''title''': '''University_of_Notre_Dame''',
    '''context''': '''Architecturally, the school has a Catholic character. Atop the Main Building\'s gold dome is a golden statue of the Virgin Mary. Immediately in front of the Main Building and facing it, is a copper statue of Christ with arms upraised with the legend "Venite Ad Me Omnes". Next to the Main Building is the Basilica of the Sacred Heart. Immediately behind the basilica is the Grotto, a Marian place of prayer and reflection. It is a replica of the grotto at Lourdes, France where the Virgin Mary reputedly appeared to Saint Bernadette Soubirous in 1858. At the end of the main drive (and in a direct line that connects through 3 statues and the Gold Dome), is a simple, modern stone statue of Mary.''',
    '''question''': '''To whom did the Virgin Mary allegedly appear in 1858 in Lourdes France?''',
    '''answers''': {'''text''': ['''Saint Bernadette Soubirous'''], '''answer_start''': [515]},
}
@pytest.mark.parametrize(
    "task_cls"			,[
        AudioClassification,
        AutomaticSpeechRecognition,
        ImageClassification,
        LanguageModeling,
        QuestionAnsweringExtractive,
        Summarization,
        TextClassification,
    ]			,)
def 							UpperCAmelCase_						(		__lowerCamelCase      :      str				):
   lowercase_    :str					    =				task_cls()
   lowercase_    :Tuple					    =				asdict(__lowerCamelCase				)
   lowercase_    :Dict					    =				task_template_from_dict(__lowerCamelCase				)
   assert task == reloaded
class    a_     :





     def 							lowercase__   (				self	:      Optional[Any]		):





        """simple docstring"""




        lowercase_    :Optional[int]					    =				LanguageModeling(text_column="input_text"		)
        assert {"input_text": "text"} == task.column_mapping







     def 							lowercase__   (				self	:      Any		):





        """simple docstring"""




        lowercase_    :Tuple					    =				Features({"text": Value("string"		)}		)
        lowercase_    :List[Any]					    =				{"text_column": "input_text"}
        lowercase_    :List[str]					    =				LanguageModeling.from_dict(lowercase		)
        assert "language-modeling" == task.task
        assert input_schema == task.input_schema







class    a_     (       _lowerCAmelCase							):





     def 							lowercase__   (				self	:      Tuple		):





        """simple docstring"""




        lowercase_    :List[str]					    =				sorted(["pos", "neg"]		)





     def 							lowercase__   (				self	:      int		):





        """simple docstring"""




        lowercase_    :List[str]					    =				TextClassification(text_column="input_text"			,   label_column="input_label"		)
        self.assertDictEqual({"input_text": "text", "input_label": "labels"}			,   task.column_mapping		)





     def 							lowercase__   (				self	:      List[Any]		):





        """simple docstring"""




        lowercase_    :Union[str, Any]					    =				Features({"text": Value("string"		)}		)
        # Labels are cast to tuple during `TextClassification.__post_init__`, so we do the same here
        lowercase_    :Any					    =				Features({"labels": ClassLabel}		)
        lowercase_    :str					    =				{"text_column": "input_text", "label_column": "input_labels"}
        lowercase_    :Optional[int]					    =				TextClassification.from_dict(lowercase		)
        self.assertEqual("text-classification"			,   task.task		)
        self.assertEqual(lowercase			,   task.input_schema		)
        self.assertEqual(lowercase			,   task.label_schema		)







     def 							lowercase__   (				self	:      str		):





        """simple docstring"""




        lowercase_    :Union[str, Any]					    =				TextClassification(text_column="input_text"			,   label_column="input_label"		)
        self.assertEqual(task.label_schema["labels"]			,   lowercase		)
        lowercase_    :Tuple					    =				task.align_with_features(Features({"input_label": ClassLabel(names=self.labels		)}		)		)
        self.assertEqual(task.label_schema["labels"]			,   ClassLabel(names=self.labels		)		)







class    a_     (       _lowerCAmelCase							):





     def 							lowercase__   (				self	:      List[str]		):





        """simple docstring"""




        lowercase_    :int					    =				QuestionAnsweringExtractive(
            context_column="input_context"			,   question_column="input_question"			,   answers_column="input_answers"		)
        self.assertDictEqual(
            {"input_context": "context", "input_question": "question", "input_answers": "answers"}			,   task.column_mapping		)







     def 							lowercase__   (				self	:      Any		):





        """simple docstring"""




        lowercase_    :Dict					    =				Features({"question": Value("string"		), "context": Value("string"		)}		)
        lowercase_    :List[Any]					    =				Features(
            {
                "answers": Sequence(
                    {
                        "text": Value("string"		),
                        "answer_start": Value("int32"		),
                    }		)
            }		)
        lowercase_    :int					    =				{
            "context_column": "input_input_context",
            "question_column": "input_question",
            "answers_column": "input_answers",
        }
        lowercase_    :int					    =				QuestionAnsweringExtractive.from_dict(lowercase		)
        self.assertEqual("question-answering-extractive"			,   task.task		)
        self.assertEqual(lowercase			,   task.input_schema		)
        self.assertEqual(lowercase			,   task.label_schema		)







class    a_     (       _lowerCAmelCase							):





     def 							lowercase__   (				self	:      Any		):





        """simple docstring"""




        lowercase_    :Tuple					    =				Summarization(text_column="input_text"			,   summary_column="input_summary"		)
        self.assertDictEqual({"input_text": "text", "input_summary": "summary"}			,   task.column_mapping		)







     def 							lowercase__   (				self	:      Union[str, Any]		):





        """simple docstring"""




        lowercase_    :int					    =				Features({"text": Value("string"		)}		)
        lowercase_    :str					    =				Features({"summary": Value("string"		)}		)
        lowercase_    :Tuple					    =				{"text_column": "input_text", "summary_column": "input_summary"}
        lowercase_    :Optional[int]					    =				Summarization.from_dict(lowercase		)
        self.assertEqual("summarization"			,   task.task		)
        self.assertEqual(lowercase			,   task.input_schema		)
        self.assertEqual(lowercase			,   task.label_schema		)







class    a_     (       _lowerCAmelCase							):





     def 							lowercase__   (				self	:      Any		):





        """simple docstring"""




        lowercase_    :Any					    =				AutomaticSpeechRecognition(audio_column="input_audio"			,   transcription_column="input_transcription"		)
        self.assertDictEqual({"input_audio": "audio", "input_transcription": "transcription"}			,   task.column_mapping		)







     def 							lowercase__   (				self	:      Optional[int]		):





        """simple docstring"""




        lowercase_    :Union[str, Any]					    =				Features({"audio": Audio()}		)
        lowercase_    :str					    =				Features({"transcription": Value("string"		)}		)
        lowercase_    :Dict					    =				{
            "audio_column": "input_audio",
            "transcription_column": "input_transcription",
        }
        lowercase_    :Tuple					    =				AutomaticSpeechRecognition.from_dict(lowercase		)
        self.assertEqual("automatic-speech-recognition"			,   task.task		)
        self.assertEqual(lowercase			,   task.input_schema		)
        self.assertEqual(lowercase			,   task.label_schema		)







class    a_     (       _lowerCAmelCase							):





     def 							lowercase__   (				self	:      int		):





        """simple docstring"""




        lowercase_    :str					    =				sorted(["pos", "neg"]		)





     def 							lowercase__   (				self	:      List[str]		):





        """simple docstring"""




        lowercase_    :Optional[int]					    =				AudioClassification(audio_column="input_audio"			,   label_column="input_label"		)
        self.assertDictEqual({"input_audio": "audio", "input_label": "labels"}			,   task.column_mapping		)





     def 							lowercase__   (				self	:      Optional[Any]		):





        """simple docstring"""




        lowercase_    :int					    =				Features({"audio": Audio()}		)
        lowercase_    :Tuple					    =				Features({"labels": ClassLabel}		)
        lowercase_    :List[str]					    =				{
            "audio_column": "input_image",
            "label_column": "input_label",
        }
        lowercase_    :List[Any]					    =				AudioClassification.from_dict(lowercase		)
        self.assertEqual("audio-classification"			,   task.task		)
        self.assertEqual(lowercase			,   task.input_schema		)
        self.assertEqual(lowercase			,   task.label_schema		)







     def 							lowercase__   (				self	:      Union[str, Any]		):





        """simple docstring"""




        lowercase_    :Dict					    =				AudioClassification(audio_column="input_audio"			,   label_column="input_label"		)
        self.assertEqual(task.label_schema["labels"]			,   lowercase		)
        lowercase_    :List[Any]					    =				task.align_with_features(Features({"input_label": ClassLabel(names=self.labels		)}		)		)
        self.assertEqual(task.label_schema["labels"]			,   ClassLabel(names=self.labels		)		)







class    a_     (       _lowerCAmelCase							):





     def 							lowercase__   (				self	:      Union[str, Any]		):





        """simple docstring"""




        lowercase_    :Union[str, Any]					    =				sorted(["pos", "neg"]		)





     def 							lowercase__   (				self	:      Any		):





        """simple docstring"""




        lowercase_    :Optional[int]					    =				ImageClassification(image_column="input_image"			,   label_column="input_label"		)
        self.assertDictEqual({"input_image": "image", "input_label": "labels"}			,   task.column_mapping		)





     def 							lowercase__   (				self	:      Optional[Any]		):





        """simple docstring"""




        lowercase_    :Dict					    =				Features({"image": Image()}		)
        lowercase_    :str					    =				Features({"labels": ClassLabel}		)
        lowercase_    :Optional[Any]					    =				{
            "image_column": "input_image",
            "label_column": "input_label",
        }
        lowercase_    :str					    =				ImageClassification.from_dict(lowercase		)
        self.assertEqual("image-classification"			,   task.task		)
        self.assertEqual(lowercase			,   task.input_schema		)
        self.assertEqual(lowercase			,   task.label_schema		)







     def 							lowercase__   (				self	:      List[Any]		):





        """simple docstring"""




        lowercase_    :Any					    =				ImageClassification(image_column="input_image"			,   label_column="input_label"		)
        self.assertEqual(task.label_schema["labels"]			,   lowercase		)
        lowercase_    :Dict					    =				task.align_with_features(Features({"input_label": ClassLabel(names=self.labels		)}		)		)
        self.assertEqual(task.label_schema["labels"]			,   ClassLabel(names=self.labels		)		)







class    a_     (       _lowerCAmelCase							):





     def 							lowercase__   (				self	:      Tuple		):





        """simple docstring"""




        lowercase_    :Dict					    =				DatasetInfo(task_templates=QuestionAnsweringExtractive()		)
        lowercase_    :Optional[Any]					    =				Dataset.from_dict({k: [v] for k, v in SAMPLE_QUESTION_ANSWERING_EXTRACTIVE.items()}			,   info=lowercase		)
        assert isinstance(dataset.info.task_templates			,   lowercase		)
        assert len(dataset.info.task_templates		) == 1

        def keep_task(lowercase	:      List[str]		):
           return x

        def dont_keep_task(lowercase	:      Any		):
           lowercase_    :Optional[Any]					    =				deepcopy(lowercase		)
           lowercase_    :Dict					    =				0
           return out

        lowercase_    :List[str]					    =				dataset.map(lowercase		)
        assert mapped_dataset.info.task_templates == dataset.info.task_templates
        # reload from cache
        lowercase_    :List[Any]					    =				dataset.map(lowercase		)
        assert mapped_dataset.info.task_templates == dataset.info.task_templates

        lowercase_    :str					    =				dataset.map(lowercase		)
        assert mapped_dataset.info.task_templates == []
        # reload from cache
        lowercase_    :Union[str, Any]					    =				dataset.map(lowercase		)
        assert mapped_dataset.info.task_templates == []







     def 							lowercase__   (				self	:      Optional[Any]		):





        """simple docstring"""




        lowercase_    :Optional[Any]					    =				Features({"text": Value("string"		), "label": ClassLabel(names=("pos", "neg")		)}		)
        lowercase_    :str					    =				TextClassification(text_column="text"			,   label_column="label"		)
        lowercase_    :Optional[int]					    =				DatasetInfo(features=lowercase			,   task_templates=lowercase		)
        lowercase_    :Dict					    =				Dataset.from_dict({"text": ["A sentence."], "label": ["pos"]}			,   info=lowercase		)

        def process(lowercase	:      Dict		):
           return example

        lowercase_    :Tuple					    =				dataset.remove_columns("label"		)
        lowercase_    :Optional[int]					    =				modified_dataset.map(lowercase		)
        assert mapped_dataset.info.task_templates == []


