Terminology for search relevance (FAST Search Server 2010 for SharePoint)(informazioni in lingua inglese)

Aggiornato: 10 febbraio 2011

The following terms are important to search relevance:

Term	Definition
Crawled properties	Crawled properties are automatically extracted from crawled content and grouped by category based on the protocol handler or IFilter used.  They represent the metadata for content that is indexed. Typically, crawled properties include column data for SharePoint list items, document properties for Microsoft Office or other binary file types, and HTML metadata in web pages. Administrators map crawled properties to managed properties in order to provide useful search experiences.
Managed properties	Administrators map crawled properties to managed properties in order to provide useful search experiences. For example, an administrator might create a managed property named Client that maps to various crawled properties called Customer, Client, and Cust from different content repositories. Managed properties can then be used across the search solution, such as in defining search scopes and in applying search filters.
Full-text index	Managed properties are mapped to a full-text index. This enables a search to be executed across several properties at the same time. When a search is performed, it searches in a full-text index. You can have several full-text indexes.
Index schema	The index schema manages the mapping of managed properties into full-text indexes. It is used to specify which managed properties can be searched in the search index and the associated search-related features.
Search item	A searchable item in the index. This can be a document, a list, a list item, a database record, or any other kind of content that is indexed and available for search.
Recall	The number of search items found in the index related to a search. High recall means that many search items are returned.
Rank profile	A rank profile is a sort criteria used by FAST Search Server 2010 for SharePoint. It contains a collection of all configuration work used to control the order in which items are returned to the search results page. A rank profile can be mapped to one or more full-text indexes. You can create several rank profiles with different relevance settings, and you can configure these to be used as sorting criteria on the search results page, which enables the user to filter search results based on the different relevance settings.
Rank points	Points given to search items based on the importance of each searchable item. The more rank points a searchable item receives, the higher up it appears in the search results list.
Dynamic rank	Rank points added to search items at search time. The number of points given are based on a combination of the search words used and several boost values in the rank profile.
Quality rank, also known as Static rank	Rank points added to a search item before it is indexed. The number of points given are based on boost values that are stored in predefined quality rank components.

Cronologia delle modifiche

Data	Descrizione	Motivo
10 febbraio 2011	2011/02/07	Aggiornamento contenuto
12 maggio 2010	Pubblicazione iniziale