Python nltk.metrics方法代碼示例

本文整理匯總了Python中nltk.metrics方法的典型用法代碼示例。如果您正苦於以下問題：Python nltk.metrics方法的具體用法？Python nltk.metrics怎麽用？Python nltk.metrics使用的例子？那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在類nltk的用法示例。

在下文中一共展示了nltk.metrics方法的2個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的Python代碼示例。

示例1: accuracy

# 需要導入模塊: import nltk [as 別名]
# 或者: from nltk import metrics [as 別名]
def accuracy(chunker, gold):
    """
    Score the accuracy of the chunker against the gold standard.
    Strip the chunk information from the gold standard and rechunk it using
    the chunker, then compute the accuracy score.

    :type chunker: ChunkParserI
    :param chunker: The chunker being evaluated.
    :type gold: tree
    :param gold: The chunk structures to score the chunker on.
    :rtype: float
    """

    gold_tags = []
    test_tags = []
    for gold_tree in gold:
        test_tree = chunker.parse(gold_tree.flatten())
        gold_tags += tree2conlltags(gold_tree)
        test_tags += tree2conlltags(test_tree)

#    print 'GOLD:', gold_tags[:50]
#    print 'TEST:', test_tags[:50]
    return _accuracy(gold_tags, test_tags)


# Patched for increased performance by Yoav Goldberg <yoavg@cs.bgu.ac.il>, 2006-01-13
#  -- statistics are evaluated only on demand, instead of at every sentence evaluation
#
# SB: use nltk.metrics for precision/recall scoring?
#

開發者ID:rafasashi，項目名稱:razzy-spinner，代碼行數:32，代碼來源:util.py

示例2: accuracy

# 需要導入模塊: import nltk [as 別名]
# 或者: from nltk import metrics [as 別名]
def accuracy(chunker, gold):
    """
    Score the accuracy of the chunker against the gold standard.
    Strip the chunk information from the gold standard and rechunk it using
    the chunker, then compute the accuracy score.

    :type chunker: ChunkParserI
    :param chunker: The chunker being evaluated.
    :type gold: tree
    :param gold: The chunk structures to score the chunker on.
    :rtype: float
    """

    gold_tags = []
    test_tags = []
    for gold_tree in gold:
        test_tree = chunker.parse(gold_tree.flatten())
        gold_tags += tree2conlltags(gold_tree)
        test_tags += tree2conlltags(test_tree)

    #    print 'GOLD:', gold_tags[:50]
    #    print 'TEST:', test_tags[:50]
    return _accuracy(gold_tags, test_tags)


# Patched for increased performance by Yoav Goldberg <yoavg@cs.bgu.ac.il>, 2006-01-13
#  -- statistics are evaluated only on demand, instead of at every sentence evaluation
#
# SB: use nltk.metrics for precision/recall scoring?
#

開發者ID:V1EngineeringInc，項目名稱:V1EngineeringInc-Docs，代碼行數:32，代碼來源:util.py

注：本文中的nltk.metrics方法示例由純淨天空整理自Github/MSDocs等開源代碼及文檔管理平台，相關代碼片段篩選自各路編程大神貢獻的開源項目，源碼版權歸原作者所有，傳播和使用請參考對應項目的License；未經允許，請勿轉載。