1. A computer-implemented method comprising: defining a first subset of entities belonging to one or more entity classes; constructing at least one historical profile for each entity in the subset of entities based on a set of possible outcomes of transaction behavior of each entity in the first subset of entities; based on the historical profiles, selecting a second subset of entities having transaction behavior associated with a transaction, the transaction behavior being predictive of at least one targeted outcome from a set of possible outcomes; redefining the first subset of entities with the second subset of entities; and monitoring the historical profiles for the entities to find entities for which the behavior is so significantly different than normal as to indicate a high probability that the entity is involved in a fraud process that is to be reported to humans.
1. A computer-implemented method comprising: defining a first subset of entities belonging to one or more entity classes; constructing at least one historical profile for each entity in the subset of entities based on a set of possible outcomes of transaction behavior of each entity in the first subset of entities; based on the historical profiles, selecting a second subset of entities having transaction behavior associated with a transaction, the transaction behavior being predictive of at least one targeted outcome from a set of possible outcomes; redefining the first subset of entities with the second subset of entities; and monitoring the historical profiles for the entities to find entities for which the behavior is so significantly different than normal as to indicate a high probability that the entity is involved in a fraud process that is to be reported to humans. 5. The computer-implemented method of claim 1 , further comprising: generating at least one score related to the transaction based on one or more mathematical models; and combining the at least one score with information of the transaction behavior to generate a probability of the targeted outcome.