Scikit learn Scikit学习：\u count\u vocab正在抛出空词汇错误

我正在传递两个字符串，例如：

$1-2$$3-4$5-6$

&

$7-8$$9-10$$10-11$

在这种情况下，count_vocab函数抛出错误：

empty vocabulary: perhaps the document contains only stop words"

那么$symbol有问题吗

---

不考虑$1-2 $作为令牌吗？< /P> < P>令牌的定义由构造函数：<代码> toknyType < /Cord>参数（正则表达式）确定：

Regular expression denoting what constitutes a "token", only used
if `tokenize == 'word'`. The default regexp select tokens of 2
or more alphanumeric characters (punctuation is completely ignored
and always treated as a token separator).

这显然与您拥有的不匹配，因此为您的数据定义不同的RE