Research Topics Statistical NLP Statistical Language Analysis Statistical Parser Software ptbconv-3.0 Converter for Penn treebank corpus. This script requires Ruby 1.8.2 or later. How to install % cd ptbconv-3.0/ ; % ./configure % ./make How to use Run this script with -h option and see them. % ./ptbconv -h Output Formats Phrase Structure Trees ASCII Tree From If you run this script with -V option