Key Contexts of Thematic Words

This T-LAB tool extracts lists of meaningful elementary contexts which allow us to deepen the thematic value of key words.

Unlike Concordances, which allows the extraction of all elementary contexts in which the selected key words are just present (occurrences), and unlike Word Associations, which allows the extraction of all elementary contexts in which the selected key words are in matching pairs (co-occurrences), this tool allow us to extract the elementary contexts in which each selected key word is associated with other words (multiple co-occurrences) defining its thematic field.

It works in the following way:

1- the user chooses (double click) a thematic word "X" (see "Muslim" below);
2- T-LAB proposes a list of words (max. 50) whose co-occurrence values with "X" are the most significant;

3- the user can remove irrelevant items from the list provided;
T-LAB assumes that the user list is a query vector and computes its association indexes (i.e. cosine coefficients) with all the elementary contexts of the corpus or of the selected corpus subset;
4- the output provided is a HTML file which contains a list of the most significant key-contexts of "X", listed by the descending order of their association indexes;

The 1-4 steps can be reiterated for "n" thematic words.