Comodo Web Filtering product is developed to classify domains and web pages using machine learning methods by measuring all the aspects of a domain and web site. The keyword densities found on the web page are a critical step towards understanding the "content" of the page as well as identifying the "topics" and "categories" of it by analyzing not only the textual content but also the headers, the url and even images. All domains and web pages which are queried by CWF are passing through this analysis.
Considering 250,000 new domains are registered every day, and millions of pages are created for existing domains, usually as user-generated-contents, it is impractical to categorize all these domains and pages manually, or semi-automated methods. The cutting-edge technology used in Comodo Web Filtering performs a fully-automatic and highly reliable classification of domains and web pages.