CLIPS"预期构造的开始"

Question

我有这个功课(我是学生),在CLIPS中,但我无法取得任何进展,尽管在谷歌搜索,并花了一些时间在它上面.

(clear)
(deftemplate book
    (multislot surname)(slot name)(multislot title) 
)

(book (surname J.P.)(name Dubreuil)(title History of francmasons))
(book (surname T.)(name Eker)(title Secrets of millionaire mind))

(defrule find_title
    ?book<-(book(name Eker))
    =>
    (printout t ?book crlf)
)

我最终得到的是这个错误:"预期构造的开始".有什么想法吗？

Answer 1

如果您使用load命令加载此内容,那么您将使用CLIPS结构(例如deftemplate和defrule)混合命令(例如clear).要解决此问题,首先使用构造创建一个文件,例如book.clp:

(deftemplate book
    (multislot surname)(slot name)(multislot title) 
)

(deffacts initial
(book (surname J.P.)(name Dubreuil)(title History of francmasons))
(book (surname T.)(name Eker)(title Secrets of millionaire mind)))

(defrule find_title
    ?book<-(book(name Eker))
    =>
    (printout t ?book crlf)
)

然后,您可以使用load命令加载文件并运行它:

CLIPS> (clear)
CLIPS> (load book.clp)
%$*
TRUE
CLIPS> (reset)
CLIPS> (agenda)
0      find_title: f-2
For a total of 1 activation.
CLIPS> (facts)
f-0     (initial-fact)
f-1     (book (surname J.P.) (name Dubreuil) (title History of francmasons))
f-2     (book (surname T.) (name Eker) (title Secrets of millionaire mind))
For a total of 3 facts.
CLIPS> (run)
<Fact-2>
CLIPS>