Lingua::CollinsParser::Node - Syntax tree node
use Lingua::CollinsParser; my $p = Lingua::CollinsParser->new(); ... my $node = $p->parse_sentence(\@words, \@tags); my $head = $node->head; my @children = $node->children; print $node->as_xml;
This class represents a node in a syntax tree generated by
Lingua::CollinsParser->parse_sentence. Each node may contain zero or more child nodes - thus the tree structure. This class provides no methods for altering the tree structure, so the trees are effectively read-only objects.
The following methods are available in the
Creates a new
Lingua::CollinsParser::Node object and returns it. For initialization,
new() accepts a list of key-value pairs corresponding to the data fields
Returns the head child node of this node, or
undef if this node has no head.
In list context, returns the child nodes of this node. In scalar context, returns the number of child nodes.
Returns the token associated with this node, or
undef if this node is not associated with a token (i.e. if this node isn't a leaf).
Returns the token representing the head of this node. This is equivalent to following
head() to a leaf node and then returning
token(), but faster.
Returns the type of this node. The current allowable values are
unary; these values may change in future versions.
For leaf nodes, returns the part-of-speech associated with this node. For other nodes, returns the syntactic label of the constituent represented by this node.
Returns a string representing this node as XML. The exact names of the tags in the output are subject to change in future versions.
Ken Williams, email@example.com