Maui is multi-purpose automatic indexing tool. You can read more about it on: http://maui-indexer.googlecode.com/ and in the blog http://maui-indexer.blogspot.com/ For a quick start, import Maui into Eclipse, add all jars in the lib folder as Rereferenced libraries, then run MauiWrapper -Xmx512m data/term_assignment/test/w7539e.txt You should see the following output: Keyword: Forestry Keyword: Afforestation Keyword: Disasters Keyword: Desertification Keyword: Taiwan Keyword: China Keyword: Degradation Keyword: Climate Keyword: Soil Keyword: Deserts Keyword: Sand