def clean_str(string, TREC=False):
 string = re.sub("[^A-Za-z0-9(),!?\\'\\`]", ' ', string)
 string = re.sub("\\'s", " 's", string)
 string = re.sub("\\'ve", " 've", string)
 string = re.sub("n\\'t", " n't", string)
 string = re.sub("\\'re", " 're", string)
 string = re.sub("\\'d", " 'd", string)
 string = re.sub("\\'ll", " 'll", string)
 string = re.sub(',', ' , ', string)
 string = re.sub('!', ' ! ', string)
 string = re.sub('\\(', ' \\( ', string)
 string = re.sub('\\)', ' \\) ', string)
 string = re.sub('\\?', ' \\? ', string)
 string = re.sub('\\s{2,}', ' ', string)
 return (string.strip() if TREC else string.strip().lower())

def clean_str ( string , TREC = False ) : string = re . sub ( "[^A-Za-z0-9(),!?\\'\\`]" , ' ' , string ) string = re . sub ( "\\'s" , " 's" , string ) string = re . sub ( "\\'ve" , " 've" , string ) string = re . sub ( "n\\'t" , " n't" , string ) string = re . sub ( "\\'re" , " 're" , string ) string = re . sub ( "\\'d" , " 'd" , string ) string = re . sub ( "\\'ll" , " 'll" , string ) string = re . sub ( ',' , ' , ' , string ) string = re . sub ( '!' , ' ! ' , string ) string = re . sub ( '\\(' , ' \\( ' , string ) string = re . sub ( '\\)' , ' \\) ' , string ) string = re . sub ( '\\?' , ' \\? ' , string ) string = re . sub ( '\\s{2,}' , ' ' , string ) return ( string . strip ( ) if TREC else string . strip ( ) . lower ( ) )
tokenization/string cleaning for all datasets except for sst .