Abstract: In one implementation, a computer-implemented method includes accessing, upon authorization, behavior data that includes one or more time series of events indicating health-related behaviors of an individual; determining a behavior score for the individual based on the behavior data, the behavior score indicating the individual's latent behavior state; augmenting the behavioral score with medical data for the individual; identifying, by the computer system, a health-behavior phenotype for the individual based on a current position or trajectory of the augmented behavioral score within a latent health-behavior space that correlates the individual's augmented behavioral score with the health-behavior phenotype for the individual; assigning the individual to a particular population segment based, at least in part, on the current position or trajectory of the individual within the latent health-behavior space (i.e.