本體的推理規則庫是有一條條規則組成的。每條規則由主體（body）和頭(head)組成，一條規則可以有乙個主體和乙個頭，例如規則：[rule1:(?a fa:hashusband ?b)(?a fa:ismotherof ?c)->(?b fa:isfatherof ?c)]，其中規則的主體為：?a @hashusband ?b,?a @ismotherof ?c，頭為：?b @isfatherof ?c，也就是說有所有的主體可以推出頭。?a @hashusband ?b,?a @ismotherof ?c,?b @isfatherof ?c三者有乙個稱謂：clauseentry。例如方法rule類中getbody()方法返回是乙個clauseentry集合。他有2個元素?a @hashusband ?b,?a @ismotherof ?c。下面有個規則庫：
[c-sharp]view plain
copy
@prefix fa: >.@include .@include .
[rule1: (?a fa:hashusband ?b)(?a fa:ismotherof ?c)->(?b fa:isfatherof ?c)]
[rule2: (?a fa:hashusband ?b)(?a fa:hasdaughter ?c)->(?b fa:isfartherof ?c)]
[rule3: (?a fa:hashusband ?b)(?a fa:hasdaughter ?c)->(?b fa:hasdaughter ?c)]
[rule4: (?a fa:hashusband ?b)(?a fa:hasdaughter ?c)->(?c fa:hasfather ?b)]
[rule5: (?a fa:hashusband ?b)(?a fa:hasdaughter ?c)->(?c fa:isdaughterof ?b)]
[rule6: (?a fa:hashusband ?b)(?a fa:hasson ?c)->(?b fa:isfatherof ?c)]
[rule7: (?a fa:hashusband ?b)(?a fa:hasson ?c)->(?b fa:hasson ?c)]
[rule8: (?a fa:hashusband ?b)(?a fa:hasson ?c)->(?c fa:hasfather ?b)]
[rule9: (?a fa:hashusband ?b)(?a fa:hasson ?c)->(?c fa:issonof ?b)]
[rule10:(?a fa:haswife ?b)(?a fa:isfatherof ?c)->(?b fa:ismotherof ?c)]
[rule11:(?a fa:haswife ?b)(?a fa:hadaughter ?c)->(?b fa:ismotherof ?c)]
[rule12:(?a fa:haswife ?b)(?a fa:hadaughter ?c)->(?b fa:hasdaugher ?c)]
[rule13:(?a fa:haswife ?b)(?a fa:hadaughter ?c)->(?c fa:hasmother ?b)]
[rule14:(?a fa:haswife ?b)(?a fa:hadaughter ?c)->(?c fa:isdaughterof ?b)]
[rule15:(?a fa:haswife ?b)(?a fa:hasson ?c)->(?b fa:ismotherof ?c)]
[rule16:(?a fa:haswife ?b)(?a fa:hasson ?c)->(?b fa:hasson ?c)]
[rule17:(?a fa:haswife ?b)(?a fa:hasson ?c)->(?c fa:hasmother ?b)]
[rule18:(?a fa:haswife ?b)(?a fa:hasson ?c)->(?c fa:issonof ?b)]
[rule19:(?a fa:haswife ?b)->(?a fa:ishusbandof ?b)]
[rule20:(?a fa:hashusband ?b)->(?a fa:iswifeof ?b)]
[rule21:(?a fa:ishusbandof ?b)->(?a fa:haswife ?b)]
[rule22:(?a fa:iswifeof ?b)->(?a fa:hashusband ?b)]
[rule23:(?a fa:hasfather ?b) (?c fa:hasfather ?d) (?b fa:hasbrother ?d) notequal(?b,?d)->(?a fa:hascousin ?b)]
[rule24:(?a fa:hasfather ?b)(?c fa:hasfather ?d)(?b fa:hasfather ?e)(?d fa:hasfather ?e) notequal(?b,?d)->(?a fa:hascousin ?c)]
[rule25:(?a fa:hasson ?b)(?b fa:hasson ?c)->(?a fa:hasgrandson ?c)]
[rule26:(?a fa:hasson ?b)(?b fa:hasdaughter ?c)->(?a fa:hasgranddaughter ?c)]
[rule27:(?a fa:hasfather ?b)(?b fa:hasbrother ?c)->(?a fa:hasuncle ?c)]
[rule28:(?a fa:hasfather ?b)(?b fa:hassister ?c)->(?a fa:hasaunt ?c)]
[rule29:(?a fa:hasgrandson ?b)->(?b fa:isgrandsonof ?a)]
[rule30:(?a fa:hasaunt ?b)->(?b fa:isauntof ?a)]
[rule31:(?a fa:hasfather ?b)->(?b fa:isfatherof ?a)]
[rule32:(?a fa:hasmother ?b)->(?b fa:ismotherof ?a)]
[rule33:(?a fa:hasbrother ?b)->(?b fa:isbrotherof ?a)]
[rule34:(?a fa:hassister ?b)->(?b fa:issisterof ?b)]
[rule35:(?a fa:hascousin ?b)->(?b fa:iscousinof ?a)]
[rule36:(?a fa:hasson ?b)->(?b fa:issonof ?a)]
[rule37:(?a fa:hasdaughter ?b)->(?b fa:isdaughterof ?a)]
[rule38:(?a fa:hasgranddaughter ?b)->(?b fa:isgranddaughterof ?a)]
[rule39:(?a fa:haswife ?b)->(?b fa:iswifeof ?a)]
[rule40:(?a fa:hashusband ?b)->(?b fa:ishusbandof ?a)]
[rule41:(?a fa:hasuncle ?b)->(?b fa:isuncleof ?a)]
下面**是根據這個規則庫查個規則的例子
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public
static
void
main(string args)
system.out
.println(
"/n-------------------/n"
);
clauseentry head=rules.get
(0).gethead();
intk=rules.
get(0).headlength();
for(
inti=0;i
system.out
.print(head[i]+
",");
} system.out
.println(
"/n-------------------/n"
);
system.out
.println(rules.
get(0).getname());
}
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