更有效地实现Textacy / spacy 'subject_verb_object_triples‘

Question

我试图在我的数据集中实现来自textacy的'extract.subject_verb_object_triples‘函数。但是，我编写的代码非常慢，内存非常密集。是否有更有效的实施？

import spacy
import textacy

def extract_SVO(text):

    nlp = spacy.load('en_core_web_sm')
    doc = nlp(text)
    tuples = textacy.extract.subject_verb_object_triples(doc)
    tuples_to_list = list(tuples)
    if tuples_to_list != []:
        tuples_list.append(tuples_to_list)

tuples_list = []          
sp500news['title'].apply(extract_SVO)
print(tuples_list)

样本数据(sp500news)

    date_publish  \
0       2013-05-14 17:17:05   
1       2014-05-09 20:15:57   
4       2018-07-19 10:29:54   
6       2012-04-17 21:02:54   
8       2012-12-12 20:17:56   
9       2018-11-08 10:51:49   
11      2013-08-25 07:13:31   
12      2015-01-09 00:54:17   

 title  
0       Italy will not dismantle Montis labour reform  minister                            
1       Exclusive US agency FinCEN rejected veterans in bid to hire lawyers                
4       Xis campaign to draw people back to graying rural China faces uphill battle        
6       Romney begins to win over conservatives                                            
8       Oregon mall shooting survivor in serious condition                                 
9       Polands PGNiG to sign another deal for LNG supplies from US CEO                    
11      Australias opposition leader pledges stronger economy if elected PM                
12      New York shifts into Code Blue to get homeless off frigid streets                  

Answer 1

这会让它加速一些-

import spacy
import textacy
nlp = spacy.load('en_core_web_sm')
def extract_SVO(text):
    tuples = textacy.extract.subject_verb_object_triples(text)
    if tuples:
        tuples_to_list = list(tuples)
        tuples_list.append(tuples_to_list)

tuples_list = []          
sp500news['title'] = sp500news['title'].apply(nlp)
_ = sp500news['title'].apply(extract_SVO)
print(tuples_list)

解释

在OP实现中，每次从函数内部调用nlp = spacy.load('en_core_web_sm')。我觉得这是最大的瓶颈。这是可以消除的，它应该加快它的速度。

此外，只有在元组不是空的情况下，才能将tuple转换为list。