The advantage of the intelligent search engine Nigma.ru is that its ability to find documents in the light of Russian language. Nigma combines results from different search engines. Probably this is way to improve the quality of clustering.

Project Nigma.ru starts on April 12, 2005. The creator of the project is Victor Lavrenko – who previously worked in the company Mail.ru.

Nigma uses an index base of various search engines: Google, Yahoo, MSN, Yandex, Rambler, Altavista, Aport. The user’s search query formed by a series of documents, which grouped into thematic classes that have a definite description. The user can refine search by removing from it certain clusters (removing the check mark in front of their names).

Nigma offers suggestions based on previous users queries.

Nigma provides very easy transition to the most popular sites. For example, earlier to get to the site “Classmates” – odnoklassniki.ru, visitor had to type 13 letters, press the «Enter», to wait for results, and then click on the first result.

Now Nigma users, can hold down the “O” for a few seconds and then quickly go to the site “classmates.” The same will happen when user press and hold the “V” (the user hits the site “vkontakte.ru “, without waiting search results).

Development of new services and algorithms become based on users opinion.