我已经实现了一些 python 代码来使用 BM25 在 whoosh 上运行搜索并且一切正常，但是现在我正在尝试将评分机制更改为余弦，我收到了这个错误：
文件“TFIDF.py”，第 18 行，在 tfidf 中使用 ix.searcher(weighting=whoosh.scoring.Cosine()) 作为搜索器：AttributeError: 'module' object has no attribute 'Cosine'
如果我导入余弦
from whoosh.scoring import Cosine
我明白了：
File "TFIDF.py", line 4, in <module>
from whoosh.scoring import Cosine
ImportError: cannot import name Cosine
我的代码如下：
import whoosh
from whoosh.scoring import Cosine
from whoosh.fields import *
from whoosh.scoring import *
from whoosh.qparser import *
from whoosh.query import *
from whoosh.index import open_dir
#Index path
lab3dir= "../lab3/Aula3_1/"
ix = open_dir(lab3dir + "indexdir") #Index generated in previous lab
def cosine(queryTerms):
list=[]
dict={} # dict com ID do doc e Similiaridade
with ix.searcher(weighting=whoosh.scoring.Cosine()) as searcher:
query = QueryParser("content", ix.schema, group=OrGroup).parse(u(queryTerms))
results = searcher.search(query, limit=100)
for i,r in enumerate(results):
list.append(r["id"])
print r, results.score(i)
dict[r["id"]]= results.score(i)
return dict
有什么想法？？？
谢谢！