Patent US 4,930,077

A method and system for text analysis provides that text messages perceived by a population can be scored to determine the extent to which the messages favor one or more specified positions on a specified issue. A method and system for predicting public opinion based on message scores provides that the extent to which messages favor one or more specified positions can be used to determine the effect on the opinions of a specified population and to determine changes in the percentages of the percent of subpopulations within said specified population which favor said one or more specified positions.