13. A method for evaluating the text content of a document database with respect to a population of documents comprising the steps of: (a) providing a computer system having a user interface with a display; (b) forming one or more nets each comprising at least two nodes associated by at least one interaction, one or more said nodes representing an evaluation criteria, said one or more nets being viewable at said display; (c) treating said documents to have an attribute value and calculating for each document a geometric relative distance with respect to a said node criteria and displaying corresponding document symbols at said display; (d) delimiting at said display a first region of said document symbols; (e) delimiting at said display a second region of said document symbols; (f) selecting a said document attribute value to be correlated and the criteria for establishing an attribute value match; (g) determining the presence of one or more document attribute value match pairs as correlations between said first and second regions; and (h) displaying said correlations at said display.
13. A method for evaluating the text content of a document database with respect to a population of documents comprising the steps of: (a) providing a computer system having a user interface with a display; (b) forming one or more nets each comprising at least two nodes associated by at least one interaction, one or more said nodes representing an evaluation criteria, said one or more nets being viewable at said display; (c) treating said documents to have an attribute value and calculating for each document a geometric relative distance with respect to a said node criteria and displaying corresponding document symbols at said display; (d) delimiting at said display a first region of said document symbols; (e) delimiting at said display a second region of said document symbols; (f) selecting a said document attribute value to be correlated and the criteria for establishing an attribute value match; (g) determining the presence of one or more document attribute value match pairs as correlations between said first and second regions; and (h) displaying said correlations at said display. 20. The method of claim 13 in which: said step (h) is carried out by providing visible line at said display connecting two said symbols and representing said correlation.