This article describes the response format of the deprecated Tags Facet Request API
The category document identifies the tags that have been assigned to particular items, such as blog posts or community entries. Tags are single-word keywords that categorize a posting or entry. A tag classifies the information in the posting or entry to make it easier to find the content later. The format of the tags document is an Atom publishing protocol (APP) categories document.
All elements are in the http://www.w3.org/2007/app namespace, except those that are prefixed as follows:
In the http://www.w3.org/2005/Atom namespace.snx
In the http://www.ibm.com/xmlns/prod/sn namespace.Table 1. Child element of the <app:categories> element
Table 2. The <atom:category> element
Describes a tag. The attributes of this element are described in Table 2.
Parent topic: Search API Atom entry types
The number of posts or entries to which the tag has been assigned.