About search issues

In this article, raises the question about the quality of the search engines, conducted an overview of mathematical models and algorithms used by the search engines is considered a Boolean and vector models. Because in today's issue of the search engines for the query contains hundreds of thousands of results and the criteria for selecting useful content tightened, it proposed a new principle of organizing searches, complement existing mechanisms, thereby improving the quality of search engines. The principle is to organize 'secondary index "useful documents, which was formed earlier with the direct participation alive users, thereby avoiding the need to resort to the classifiers, and machine learning. It is noted the need for a criterion of similarity between the queries are, what method can be used Shingles.