Abstract: A method can include the actions of: receiving a feature vector, the feature vector including one or more elements; identifying an element type for each of the one or more elements; selecting, from a set of predictive models, a subset of one or more predictive models based on the element types and one or more performance indicators associated with each predictive model in the set of predictive models; processing the feature vector using the subset of predictive models, each predictive model of the subset of predictive models generating an output based on the feature vector to provide a plurality of outputs; and generating a final output based on the plurality of outputs. Other embodiments may include corresponding systems, apparatus, and computer program products for executing the method.

Abstract: Methods include the actions of storing a first predictive model in computer-readable memory, the first predictive model having been defined based on a first training dataset provided by an owner of the first predictive model and being operable to generate an output based on a query, enabling access to the first predictive model based on permissions defined by the owner, while inhibiting access to the first training dataset, receiving a second training dataset from a user, the second training dataset being distinct from the first training dataset, modifying the first predictive model based on the second training dataset to provide a second predictive model, storing the second predictive model in computer-readable memory, and enabling access to the second predictive model.