20130117103 | UNIVERSAL CONTROL - Techniques are provided for establishing a control group from members a given population by identifying, for each member of the test group, an “unexposed twin”. In general, the unexposed twin of a test group member is the person that is most similar to the test group member, from among the members of the population that have not been exposed to the relevant marketing efforts. Preferably, the twins of each member of the population are pre-computed by mapping relevant attributes of the member to N-dimensional space. The “twin mapping” thus produced is then used to identify a control group candidate when a member of the population becomes exposed to marketing efforts for which testing is being performed. | 05-09-2013 |