TRI™ stands for "theme relevance indexing":

Definition:

TRI™ Categories are assigned by information gleaned by comparing the keyword to the parent theme.  We look at the usage of the keyword to determine how broad it is as a theme and then look at the LSI relationship between the keyword and the parent theme to determine how relevant the keyword is to the parent theme.  This is a rather crude LSI calculation with known limitations. 

Our recommendations in the various advice columns of the Zoom Analysis screen use a more refined algorithm that include the TRI™™ as only one of many important factors.

The TRI™Category simultaneously represents two different aspects of the keyword in its relationship to the parent theme.  First is theme relevance or how well it supports the theme.  Items that support the parent theme most closely should be used in the initial stages of building your website so that the theme is tight.  As the website matures, it is possible to expand the range of your theme to include ideas that are more tangent.  The TRI™ Category describes the diversity of the keywords in only the most broad terms.  For specific indications, reference the TRI™ index, a scale of 1 to 100, where the higher the number, the more closely associated the keyword is to the theme.

To learn more about Subthemes, Niches, Microniches and Phrases, go here.

Listen to a full audio description of the TRI Demystified document.

Additional Information about TRI

Parent Theme

The Parent Theme is the main theme of the Zoom Analysis screen. All of the TRI™ rankings of keywords are relative to the Parent Theme (and its synonyms).

Subthemes, Niches, Microniches and Phrases:

Keywords in these categories are directly relevant to the Parent Theme. Of the four, Subthemes are the broadest keywords, followed by Niches, then Microniches and finally Phrases.

Keywords in all four of these categories are subordinate to the Parent Theme, meaning that the number of competing websites for keywords in each of these categories is less than the number of competing websites for the Parent Theme.

Latent Themes and Latent Niches:

Keywords in these categories are slightly tangent to the Parent Theme. Of the two, Latent Themes are the broadest keywords, and Latent Niches are the smallest.

Keywords in both of these categories are subordinate to the Parent Theme, meaning that the number of competing websites for keywords in each of these categories is less than the number of competing websites for the Parent Theme.

Theme Subordinate to Keyword and Latent Tangent Themes:

Keywords in both of these categories are broader than the Parent Theme, meaning that the number of competing websites for keywords in each of these categories is more than the number of competing websites for the Parent Theme. Beware, keywords in these categories are sometimes polysemous.

Of these two categories, keywords in the Theme Subordinate to Keyword category are most relevant to the Parent Theme, and keywords in the Latent Tangent Theme category are the least relevant.

TRI™ Index number

Within each of the above TRI categories, there is a range of theme relevance for each keyword, which is indicated by the TRI™ Index number found just to the right of the TRI™ category description (after the comma). This number ranges from 1 to 100, with 1 indicating the least relevance of the keyword to the Parent Theme, and 100 indicating the most relevance. The Parent Theme and its synonyms get a TRI™ Index number of 1000.