Question

我正在尝试使用CLIPS定义一些规则，以搜索段落或文档中的文本片段（例如，过滤包含字母“ a”的单词或搜索出现多次的单词），但是我找不到任何规则例。在哪里可以找到我的问题的一些示例？

Answer 1

在规则模式内，您可以对段落中的多个单词施加约束（例如查看同一单词是否出现多次）：

CLIPS>   
(deftemplate paragraph
   (multislot words))
CLIPS> 
(defrule more-than-once
   (paragraph (words $? ?w $? ?w $?))
   =>
   (assert (more-than-once ?w)))
CLIPS> 
(defrule print-more-than-once
   (more-than-once ?w)
   =>
   (printout t "'" ?w "' appears more than once." crlf))
CLIPS> 
(assert (paragraph (words the quick brown fox jumped over the lazy dogs)))
<Fact-1>
CLIPS> (run)
'the' appears more than once.
CLIPS>

或者您可以将它们放在一个单词上：

CLIPS> 
(defrule contains-e
   (paragraph (words $? ?w&:(str-index "e" ?w) $?))
   =>
   (assert (contains ?w e)))
CLIPS> 
(defrule print-contains
   (contains ?w ?l)
   =>
   (printout t "'" ?l "' is contained in '" ?w "'." crlf))
CLIPS> (run)
'e' is contained in 'the'.
'e' is contained in 'jumped'.
'e' is contained in 'over'.
CLIPS>

有没有一种方法可以定义CLIPS规则以搜索文本？

1 个答案: