net.sf.tweety.logics.pcl.parser

Class PclParser

java.lang.Object

net.sf.tweety.commons.Parser<PclBeliefSet>

net.sf.tweety.logics.pcl.parser.PclParser

public class PclParser
extends Parser<PclBeliefSet>

This class implements a parser for probabilistic conditional logic. The BNF for a conditional knowledge base is given by (starting symbol is KB)

KB ::== (CONDITIONAL "\n")*
CONDITIONAL ::== "(" FORMULA ")" "[" PROB "]" | "(" FORMULA "|" FORMULA ")" "[" PROB "]"
FORMULA ::== PROPOSITION | "(" FORMULA ")" | FORMULA "&&" FORMULA | FORMULA "||" FORMULA | "!" FORMULA | "+" | "-"

where PROPOSITION is a sequence of symbols from {a,...,z,A,...,Z,0,...,9} with a letter at the beginning and PROB is a float in [0,1].

Author:

Matthias Thimm

Field Summary

Fields

Modifier and Type	Field and Description
private static org.slf4j.Logger	log Logger.

Constructor Summary

Constructors

Constructor and Description
PclParser()

Method Summary

Modifier and Type	Method and Description
PclBeliefSet	parseBeliefBase(java.io.Reader reader) Parses the given reader into a belief base of the given type.
ProbabilisticConditional	parseFormula(java.io.Reader reader) Parses the given reader into a formula of the given type.

Methods inherited from class net.sf.tweety.commons.Parser

isNumeric, parseBeliefBase, parseBeliefBaseFromFile, parseFormula, parseFormulaFromFile

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

log

private static org.slf4j.Logger log

Logger.

Constructor Detail

PclParser

public PclParser()

Method Detail

parseBeliefBase

public PclBeliefSet parseBeliefBase(java.io.Reader reader)
                             throws java.io.IOException,
                                    ParserException

Description copied from class: Parser

Parses the given reader into a belief base of the given type.

Specified by:

parseBeliefBase in class Parser<PclBeliefSet>

Parameters:

reader - a reader

Returns:

a belief base

Throws:

java.io.IOException

ParserException

parseFormula

public ProbabilisticConditional parseFormula(java.io.Reader reader)
                                      throws java.io.IOException,
                                             ParserException

Description copied from class: Parser

Parses the given reader into a formula of the given type.

Specified by:

parseFormula in class Parser<PclBeliefSet>

Parameters:

reader - a reader

Returns:

a formula

Throws:

java.io.IOException

ParserException