Difference between revisions of "Corpus Relation Extraction"

Revision as of 14:31, 16 January 2013

To perform a Relation Extraction (RE) process based in Natutal Language Processing algorithms, you should right click a Corpus data-type object and select the option Corpus -> RE-> Relation Extraction. If the Corpus is not in the clipboard, you should begin by loading the Corpus to the Clipboard.

A new wizard is presented that allows to configure the RE process. The first panel enables the selection of the processes that contain the entities annotated, allowing to view some statistics and process properties. After selecting the process press Next to continue.

Next panel allows for POS-Tagger selection. Here, you select which POS-Tagger will be used, and some information about POS_Tagger properties will be present. After choosing the POS-Tagger press Next to continue.

The following panel allows for Relation Extraction Model Selection. The user selects the most adequate model (the panel below shows the expected type of results). After selecting the best model press Next.

The next panel allows choosing a Verb List that will be used to filter the results'. You can select a list of verbs (a Lexical Words object) that will not be used to create relations Typically, this will be used to avoid relations with common English verbs (e.g. be, do).

The next panel allows choosing a Verb List. You can select a list of verbs (a Lexical Words object) are not co-notated as verbs in POS-Taggers to addition as Relation Clue. After the user must press Ok Button.

RE operation will start and a small window will appear, indicating the execution of the operation. The REoperation will take a few minutes or hours, depending of corpus size.

When the process finishing, a new RE Process object will be added to the Corpus Process View.