PRETEXT is a computational tool implemented in Perl using the object oriented paradigm, which automatically performs most of the Text Mining pre-processing tasks in a collection of documents. The documents may be written in three different languages: Portuguese, Spanish and English. In addition, the tool includes facilities to reduce the dimensionality of any text pre-processed data set by using Zipf’s law and Luhn cut-offs.

The IESystem extracts metadata from scientific articles, even when they are provided from different sources or written in different languages. The process of metadata extraction is based on models which describe relative content positions or content indicators to be extracted. A set of functionalities for pre-processing and assistance to the user when constructing models are also available.