A psychologist does a small survey on 'happiness'. Each respondent provides a vector with entries 1 or 0 corresponding to whether they answer 'yes' to a question or 'no', respectively. The question vector has attributes x = (rich, married, healthy) Thus, a response (1, 0, 1) would indicate that the respondent was 'rich', 'unmarried', 'healthy'. In addition, each respondent