hultig.sumo
Class RuleList

java.lang.Object
  java.util.AbstractCollection<E>
      java.util.AbstractList<E>
          java.util.ArrayList<Rule>
              hultig.sumo.RuleList

All Implemented Interfaces:

Serializable, Cloneable, Iterable<Rule>, Collection<Rule>, Comparator<Rule>, List<Rule>, RandomAccess

public class RuleList
extends ArrayList<Rule>
implements Serializable, Comparator<Rule>

NOT YET WELL COMMENTED. Represents a collection of sentence compression/transformation rules. These rules were generated by the Aleph learning system, which is based on Inductive Logic Programming (ILP). The learned rules are saved into a file, and in this class it can be opened and their rules loaded, through the method loadFromFile(String, int). There is also a related method for loading rules from a given directory.

See Also:

Serialized Form

Nested Class Summary

static class

RuleList.SortType The Sort criteria for the rules list.

Field Summary

static int	ASCENDING Defines the ascending sorting criterion.
static int	DESCENDING Defines the descending sorting criterion constant.
RuleList.SortType	STYPE

Fields inherited from class java.util.AbstractList

modCount

Constructor Summary

RuleList()
The default constructor.

Method Summary

int	compare(Rule ra, Rule rb) Compare two rules based on their coverage values.
void	loadFromDir(String dirname, int mincover) Loads sentence reduction rules from a given directory.
boolean	loadFromFile(String fname, int mincover) Loads a set of sentence reduction rules, generated by Aleph, from a given text file.
static void	main(String[] args) Exemplifies the main operation of this class.
void	print() Outputs the whole list of sentence reduction rules.
void	printEntailments()
int	removeDuplicateRules() Eliminates duplicate rules, from this rule list.
void	sort() Sorts this list of reduction rules, according to the specified comparator and criterion.
void	sort(int mode)
void	sort(int mode, RuleList.SortType stype)

Methods inherited from class java.util.ArrayList

add, add, addAll, addAll, clear, clone, contains, ensureCapacity, get, indexOf, isEmpty, lastIndexOf, remove, remove, removeRange, set, size, toArray, toArray, trimToSize

Methods inherited from class java.util.AbstractList

equals, hashCode, iterator, listIterator, listIterator, subList

Methods inherited from class java.util.AbstractCollection

containsAll, removeAll, retainAll, toString

Methods inherited from class java.lang.Object

equals, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.Comparator

equals

Methods inherited from interface java.util.List

containsAll, equals, hashCode, iterator, listIterator, listIterator, removeAll, retainAll, subList

Field Detail

ASCENDING

public static final int ASCENDING

Defines the ascending sorting criterion.

See Also:

Constant Field Values

DESCENDING

public static final int DESCENDING

Defines the descending sorting criterion constant.

See Also:

Constant Field Values

STYPE

public RuleList.SortType STYPE

Constructor Detail

RuleList

public RuleList()

The default constructor.

Method Detail

loadFromFile

public boolean loadFromFile(String fname,
                            int mincover)

Loads a set of sentence reduction rules, generated by Aleph, from a given text file.

Parameters:

fname - The name of the file.

mincover - Loads rules having coverage greater than this parameter.

Returns:

The appropriate meaningful logical value.

loadFromDir

public void loadFromDir(String dirname,
                        int mincover)

Loads sentence reduction rules from a given directory. Any file having a name starting with "rset" and ending with a "txt" extension, will be scanned.

Parameters:

dirname - The directory from which to scan for rule files.

mincover - Loads rules having coverage greater than this parameter.

compare

public int compare(Rule ra,
                   Rule rb)

Compare two rules based on their coverage values.

Specified by:

compare in interface Comparator<Rule>

Parameters:

ra - The first rule.

rb - The second rule.

Returns:

A negative, zero, or positive value, meaning respectively ra < rb , ra = rb, or ra > rb.

sort

public void sort()

Sorts this list of reduction rules, according to the specified comparator and criterion.

sort

public void sort(int mode)

sort

public void sort(int mode,
                 RuleList.SortType stype)

removeDuplicateRules

public int removeDuplicateRules()

Eliminates duplicate rules, from this rule list.

Returns:

The number of duplications removed.

printEntailments

public void printEntailments()

print

public void print()

Outputs the whole list of sentence reduction rules.

main

public static void main(String[] args)

Exemplifies the main operation of this class.

Parameters:

args - The array of arguments.