de.up.ling.irtg.codec

Class TreeAutomatonInputCodec

java.lang.Object

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

de.up.ling.irtg.codec.TreeAutomatonInputCodec

public class TreeAutomatonInputCodec
extends InputCodec<TreeAutomaton>

An input codec that reads a top-down tree automaton. Rules take the following form:

 S! -> r(NP, VP) [0.3]
 

where S, NP, and VP are states and r is a terminal symbol. S is a final state, as indicated by the exclamation mark. Each rule can optionally be assigned a weight in square brackets; in the example, the weight is 0.3. Rules that do not have an explicit weight get a default weight of 1. Drop the brackets if r is a zero-place symbol, i.e. a rule for leaves looks like this: D -> a.

Author:

koller

Constructor Summary

Constructors

Constructor and Description
TreeAutomatonInputCodec()

Method Summary

Modifier and Type	Method and Description
TreeAutomaton	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

TreeAutomatonInputCodec

public TreeAutomatonInputCodec()

Method Detail

read

public TreeAutomaton read(InputStream is)
                   throws CodecParseException,
                          IOException

Description copied from class: InputCodec

Reads an object from an input stream.

Specified by:

read in class InputCodec<TreeAutomaton>

Returns:

Throws:

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

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