Navigational Search Analyzers
The analyzers in this group make an estimation of the search engine's navigational functioning. Different kinds of queries are used to check, whether or not the site / page in question is found on the first result page.
Navigational queries are those looking for a specific site, file or page. Such queries will usually consist of the name of some organization or business (e.g., "Punjab and Sind Bank" or "Moores Glassworks"), of some print source or web site (e.g., "Cooking Light" or "bash.org"), or they will just name the page needed (like "Bofinger Rue Sherbrooke Ouest Montréal"). Likewise, eminent bloggers or official site owners often become a target of navigational queries (think of Art Garfunkel or Jessica Gottlieb).
Evidently, a navigational query can have more than one meaning: user searching for "alabama state university" or "avril lavigne" might look for an independent information about the organization or the person in question. Still, the official site must be present in the SERP, and its position must be high enough. Furthermore, the analyzers of this group allow the switch from stricter (the official site takes first or close to first position) to looser (it's enough that the official site is among the top ten results) examination criteria.