Abstract: A survey data structure is described that specifies how to administer a survey to each of a group of people. The data structure contains an entry that specifies text that poses a fabrication gauge question for which a percentage of the population who can accurately answer the fabrication gauge question affirmatively is known. The data structure further contains a plurality of entries that each specify text posing an unlikely question for which the percentage of the population who can accurately answer the unlikely question affirmatively is small. The data structure specifies how to conduct a survey that serves as a basis for determining which people to whom the survey is administered are responding truthfully to the survey.

Abstract: A categorization data structure is described that relates to two groups of individuals. For each of two or more categories, the data structure contains (1) information identifying individuals of the first group assigned to the category, and (2) information identifying individuals of the second group assigned to the category. For each category, the information can be used to adjust the individuals of the first group assigned to the category based upon comparing the proportion of all of the individuals of the second group that are assigned to the category to the proportion of all of the individuals of the first group that are assigned to the category.

Abstract: A categorization data structure is described that relates to two groups of individuals. For each of two or more categories, the data structure contains (1) information identifying individuals of the first group assigned to the category, and (2) information identifying individuals of the second group assigned to the category.