[1] Media weight is usually expressed in the form of GRP's (Gross rating Points), AOTS (Average opportunity to see) and reach of target audience.
The main use of media weights is to monitor how well the goals of a communication plan are being reached.
TV spendings can be analyzed on the basis of program genre, channel type, time duration and total airtime.
The print rate analysis is done on the basis of color/monochrome, magazine, issue, placement of ad, month, and other variables.
In 1995, John Philip Jones talked about the shelf space model of recency in his book When Ads Work.