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118 Administrator’s Guide SurfControl Web Filter v5.5
C
USTOM
C
ATEGORIZATION
Introduction
10
INTRODUCTION
Custom categorization uses SurfControl’s Virtual Control Agent™ (VCA) technology. The VCA evaluates
unknown Web destinations, reading and analyzing content page by page. It then uses cutting-edge
artificial intelligence algorithms to study and classify each Web page into one of the SurfControl Web Filter
categories. This allows sites initially shown as ‘Uncategorized’ in the Monitor to be categorized more
meaningfully.
HOW IT WORKS
1 The VCA collects a representative number of pages and analyzes their content.
2 The VCA’s Neural Network compares the page and site with other sites in the SurfControl Web Filter
categories.
3 It then puts the site into the category that it most resembles. For more details on SurfControl’s
categories, see "Category Object" on page 67.
THE VCA IN EVALUATION MODE
If you are using Web Filter in evaluation mode, none of the custom categorization changes made by the
VCA will be stored to the database. You can perform a categorization run and view the results, but these
will not be saved to the database.