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Sigma knowledge engineering system is an system for developing, viewing and debugging theories in first
order logic. It works with Knowledge Interchange Format (KIF) and is optimized for the Suggested Upper Merged
Ontology (SUMO) www.ontologyportal.org.
package com.articulate.sigma.semRewrite;
/*
Copyright 2014-2015 IPsoft
Author: Adam Pease [email protected]
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program ; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston,
MA 02111-1307 USA
*/
import java.io.*;
import java.text.ParseException;
import java.util.*;
import com.articulate.sigma.StreamTokenizer_s;
public class RuleSet {
public ArrayList rules = new ArrayList();
public ArrayList warningSet = new ArrayList();
public static String filename = "";
/** ***************************************************************
*/
public String toString() {
StringBuffer sb = new StringBuffer();
for (int i = 0; i < rules.size(); i++)
sb.append(rules.get(i).toString() + "\n");
return sb.toString();
}
/** ***************************************************************
*/
public RuleSet parse(Lexer lex) {
RuleSet rs = new RuleSet();
String errStart = "Parsing error in " + filename;
String errStr = null;
boolean isEOL = false;
try {
do {
Rule r = Rule.parse(lex);
if (r != null)
rs.rules.add(r);
} while (!lex.testTok(Lexer.EOFToken));
}
catch (Exception ex) {
String message = ex.getMessage();
warningSet.add("Error in RuleSet.parse() " + message);
ex.printStackTrace();
}
return rs;
}
/** ***************************************************************
*/
public static RuleSet readFile(String fname) throws Exception {
filename = fname;
FileReader fr = null;
Exception exThr = null;
try {
File file = new File(fname);
Lexer lex = new Lexer(file);
RuleSet rs = new RuleSet();
return rs.parse(lex);
}
catch (Exception ex) {
exThr = ex;
String er = ex.getMessage() + ((ex instanceof ParseException)
? " at line " + ((ParseException)ex).getErrorOffset()
: "");
System.out.println("Error in RuleSet.readLines(): " + er + " in file " + fname);
}
finally {
if (fr != null) {
try {
fr.close();
}
catch (Exception ex2) {
}
}
}
if (exThr != null)
throw exThr;
return null;
}
/** *************************************************************
* A test method
*/
public static CNF testRuleAndClausify() {
String rule = "sense(212345678,?E), nsubj(?E,?X), dobj(?E,?Y) ==> " +
"{(exists (?X ?E ?Y) " +
"(and " +
"(instance ?X Organization) " +
"(instance ?Y Human)" +
"(instance ?E Hiring)" +
"(agent ?E ?X) " +
"(patient ?E ?Y)))}.";
Rule r = new Rule();
r = Rule.parseString(rule);
//System.out.println(r.toString());
return Clausifier.clausify(r.lhs);
}
/** *************************************************************
* A test method
*/
public static void testReadRuleSet() {
String filename = "/home/apease/IPsoft/SemRewrite.txt";
try {
RuleSet rs = RuleSet.readFile(filename);
}
catch (Exception e) {
e.printStackTrace();
System.out.println(e.getMessage());
}
}
/** *************************************************************
* A test method
*/
public static void main (String args[]) {
testReadRuleSet();
}
}