de.up.ling.irtg.codec

Class IrtgInputCodec

java.lang.Object

de.up.ling.irtg.codec.InputCodec<InterpretedTreeAutomaton>

de.up.ling.irtg.codec.IrtgInputCodec

public class IrtgInputCodec
extends InputCodec<InterpretedTreeAutomaton>

An input codec for IRTGs. Input files must first specify interpretations and define the algebras that these interpretations go into, using the interpretation keyword. They then list a tree automaton, rule by rule, and annotate each rule with the homomorphic images of the terminaly symbol on each interpretation, e.g. like this:

 S! -> r1(NP,VP)
 [german] *(?1,?2)
 [english] *(?2,?1)
 

The exclamation mark after the S indicates that S is a final state of the tree automaton.

See any file in the examples subdirectory with the extension "irtg" for an example of an IRTG in this format.

Author:

koller

Constructor Summary

Constructors

Constructor and Description
IrtgInputCodec()

Method Summary

Modifier and Type	Method and Description
static void	addConstructorFeature(String id, String classname, List<String> arguments, Map<String,FeatureFunction> features)
static void	addStaticFeature(String id, String classname, String methodname, List<String> arguments, Map<String,FeatureFunction> features)
InterpretedTreeAutomaton	read(InputStream is) Reads an object from an input stream.

Methods inherited from class de.up.ling.irtg.codec.InputCodec

addOptions, getAllInputCodecs, getInputCodecByExtension, getInputCodecByName, getInputCodecByNameOrExtension, getInputCodecs, getMetadata, getOption, hasTrueOption, main, read, setOption, setProgressListener

Methods inherited from class java.lang.Object

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

Constructor Detail

IrtgInputCodec

public IrtgInputCodec()

Method Detail

read

public InterpretedTreeAutomaton read(InputStream is)
                              throws IOException,
                                     CodecParseException

Description copied from class: InputCodec

Reads an object from an input stream.

Specified by:

read in class InputCodec<InterpretedTreeAutomaton>

Returns:

Throws:

IOException - if an error occurred while reading data from the input stream

CodecParseException - if an error occurred while decoding the input stream into an object

addConstructorFeature

public static void addConstructorFeature(String id,
                                         String classname,
                                         List<String> arguments,
                                         Map<String,FeatureFunction> features)
                                  throws CodecParseException

Throws:

CodecParseException

addStaticFeature

public static void addStaticFeature(String id,
                                    String classname,
                                    String methodname,
                                    List<String> arguments,
                                    Map<String,FeatureFunction> features)
                             throws CodecParseException

Throws:

CodecParseException