o i@sddlZGdddZdS)Nc@s(eZdZdZddZddZddZdS) 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 cCs||_||_dS)z :param parsed_sents: the list of parsed_sents as the output of parser :type parsed_sents: list(DependencyGraph) N) _parsed_sents _gold_sents)self parsed_sents gold_sentsrN/var/www/edux/Edux_v2/venv/lib/python3.10/site-packages/nltk/parse/evaluate.py__init__Gs zDependencyEvaluator.__init__cs hddfdd|DS)z Function to remove punctuation from Unicode string. :param input: the input string :return: Unicode string after remove all punctuation >PcPdPePfPiPoPsc3s"|] }t|vr|VqdS)N) unicodedatacategory).0xpunc_catrr Vs z4DependencyEvaluator._remove_punct..)join)rinStrrrr _remove_punctOsz!DependencyEvaluator._remove_punctc Cst|jt|jkrtdd}d}d}tt|jD]`}|j|j}|j|j}t|t|kr5td|D]A\}}||} |ddurHq9|d| dkrTtd||ddkr^q9|d7}|d | d krz|d7}|d | d krz|d7}q9q||||fS) z 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.rheadrel)lenrr ValueErrorrangenodesitemsr) rcorrcorrLtotaliparsed_sent_nodesgold_sent_nodesparsed_node_address parsed_node gold_noderrr evalXs8   zDependencyEvaluator.evalN)__name__ __module__ __qualname____doc__r rr/rrrr r s : r)rrrrrr s