The New York Times quoted Paul JJ Payack as saying that the PQI is "an algorithm that tracks words and phrases in the media and on the Internet in relation to frequency, context and appearance in global media. It is a weighted index that takes into account year-to-year increases and acceleration in the last several months". In general terms, GLM describes its Predictive Quantities Indicator (PQI), used to run its analytics on global language trends and, as a weighted index, factoring in long-term trends, short-term changes, momentum and velocity, using frequency data on words and phrases in the global print and electronic media, on the Internet, and throughout the blogosphere, as well as in proprietary databases (Factiva, Lexis-Nexis, etc.). It can also create "signals" that can be used in a variety of applications.