资 源 简 介
Introduction
Fangorn is a tool to search for structural patterns in large collections of linguistically annotated trees.
Features
Here are some of the features it currently supports:
* It indexes syntax trees of the Penn Treebank II format
* Supports structured path queries similar to XPath
* Query language supports these relations between nodes: ancestor, descendant, parent, child, following, preceding, immediate-following, immediate-preceding, following-sibling, preceding-sibling, immediate-following-sibling, immediate-preceding-sibling, and logical operators.
* Implements a fast search algorithm using the Apache Lucene search engine toolkit
* Runs within an embedded Jetty server to provide browser based access over a network
* The UI provides interactive trees that can be exported in SVG and plain text format
WebDemo
nltk.ldc.upenn.edu:9090 contains three corpora
T
