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Current File : /lib/python3/dist-packages/nltk/parse/__pycache__/evaluate.cpython-311.pyc
�

 T�c���(�ddlZGd�d��ZdS)�Nc�$�eZdZdZd�Zd�Zd�ZdS)�DependencyEvaluatora5
    Class for measuring labelled and unlabelled attachment score for
    dependency parsing. Note that the evaluation ignores punctuation.

    >>> from nltk.parse import DependencyGraph, DependencyEvaluator

    >>> gold_sent = DependencyGraph("""
    ... Pierre  NNP     2       NMOD
    ... Vinken  NNP     8       SUB
    ... ,       ,       2       P
    ... 61      CD      5       NMOD
    ... years   NNS     6       AMOD
    ... old     JJ      2       NMOD
    ... ,       ,       2       P
    ... will    MD      0       ROOT
    ... join    VB      8       VC
    ... the     DT      11      NMOD
    ... board   NN      9       OBJ
    ... as      IN      9       VMOD
    ... a       DT      15      NMOD
    ... nonexecutive    JJ      15      NMOD
    ... director        NN      12      PMOD
    ... Nov.    NNP     9       VMOD
    ... 29      CD      16      NMOD
    ... .       .       9       VMOD
    ... """)

    >>> parsed_sent = DependencyGraph("""
    ... Pierre  NNP     8       NMOD
    ... Vinken  NNP     1       SUB
    ... ,       ,       3       P
    ... 61      CD      6       NMOD
    ... years   NNS     6       AMOD
    ... old     JJ      2       NMOD
    ... ,       ,       3       AMOD
    ... will    MD      0       ROOT
    ... join    VB      8       VC
    ... the     DT      11      AMOD
    ... board   NN      9       OBJECT
    ... as      IN      9       NMOD
    ... a       DT      15      NMOD
    ... nonexecutive    JJ      15      NMOD
    ... director        NN      12      PMOD
    ... Nov.    NNP     9       VMOD
    ... 29      CD      16      NMOD
    ... .       .       9       VMOD
    ... """)

    >>> de = DependencyEvaluator([parsed_sent],[gold_sent])
    >>> las, uas = de.eval()
    >>> las
    0.6
    >>> uas
    0.8
    >>> abs(uas - 0.8) < 0.00001
    True
    c�"�||_||_dS)z�
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        Function to remove punctuation from Unicode string.
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        Return the Labeled Attachment Score (LAS) and Unlabeled Attachment Score (UAS)

        :return : tuple(float,float)
        zE Number of parsed sentence is different with number of gold sentence.rz!Sentences must have equal length.�wordNz!Sentence sequence is not matched.r��head�rel)�lenrr�
ValueError�range�nodes�itemsr )
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          r�evalzDependencyEvaluator.evalXs����t�!�"�"�c�$�*:�&;�&;�;�;��W���
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