The Predictive Quantities Indicator (PQI)

The Global Language Monitor's proprietary algorithm, the Predictive Quantities Indicator tracks the frequency of words and phrases in the global print and electronic media, on the Internet, throughout the Blogosphere, as well as accessing proprietary databases (Factiva, Lexis-Nexis, etc.).  

Once a keyword base index is created (including selected keywords, phrases, 'excluders' and 'penumbra' words), 'timestamps' and a 'media universe' are determined. 

The PQI is a weighted Index, factoring in: Long-term trends, Short-term changes, Momentum, and Velocity.   As such it can create 'signals' that can be used in a variety of applications.

Outputs include: the raw PQI, a Directional Signal, or a Relative Ranking with 100 as the base.

There are two differing PQIs. When analyzing words and phrases in political contexts, GLM uses the Political-sensitivity Quotient Index; when analyzing words and phrases in any other context, GLM uses a slightly different Predictive Quantities Indicator.