3. The method of claim 1 , wherein the plurality of source modules includes a content source module configured to encode the content data into a content feature vector of the feature vectors, wherein the content data includes at least one of content format, content category, content keywords, content image, content targeting criteria, and content cost information.
1. A method comprising: accessing a user-editable configuration file accessible to an operator of a response prediction system, the user-editable configuration file including a user specification of data accessible via external data sources, user-specified data encoding rules specifying specific portions of the data to be encoded into specific portions of one or more feature vectors, and user-specified assembly rules, the data including member data associated with a particular member and content data associated with a particular content item; encoding, using a plurality of source modules, the data accessible via the external data sources into the feature vectors, based on the user-specified data encoding rules; assembling, using an assembler module, one or more of the feature vectors into an assembled feature vector, based on the user-specified assembly rules included in the user-editable configuration file; determining that a particular one of the feature vectors is not available from a particular one of the source modules; in response to determining that the particular one of the feature vectors is not available, ignoring the particular feature vector based on a user-specified importance value associated with the particular feature vector; inserting a user-specified substitute value associated with the particular feature vector into a portion of the assembled feature vector associated with the particular feature vector; and performing, using a prediction module, a prediction modeling process based on the assembled feature vector and a prediction model, to predict a likelihood of the particular member performing a particular user action on the particular content item.