de.up.ling.irtg.codec

Class TiburonTreeAutomatonInputCodec

java.lang.Object

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

de.up.ling.irtg.codec.TiburonTreeAutomatonInputCodec

public class TiburonTreeAutomatonInputCodec
extends InputCodec<TreeAutomaton>

A codec for reading weighted tree automata in the format used by the Tiburon toolkit, a tool for working with tree automata from ISI. The rules have the following form:

q -> NP(x1 x2)  # 0.8

where q, x1, and x2 are states and NP is a terminal symbol. The rules may be assigned weights by an optional annotation like "# 0.8". Final states are defined by listing them before the first rule. Anything from a percent sign (%) to the end of the line is a comment, and therefore ignored.

Tiburon allows rules like "q -> S(subj was prednom)", where subj and prednom are states, but "was" is a terminal symbol. These rules are automatically split into smaller rules "q -> S(subj,_q_1,prednom)" and "_q_1 -> was" in the tree automaton.

Author:

koller

Constructor Summary

Constructors

Constructor and Description
TiburonTreeAutomatonInputCodec()

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

TiburonTreeAutomatonInputCodec

public TiburonTreeAutomatonInputCodec()

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