1. On a computing device, a method for recognizing a speech input, the method comprising: receiving image information of a physical space from a one or more cameras; determining an identity of a user in the physical space based on the image information; receiving audio information from one or more microphones; determining a speech input from the audio input; if the speech input comprises an ambiguous term, then comparing the ambiguous term in the speech input to digital content consumption information for the user to identify an unambiguous term corresponding to the ambiguous term, the digital content consumption information comprising social network information obtained from a remote service, the social network information including contacts from a social network, and wherein identifying the unambiguous term comprises identifying another user from the social network information; and after identifying the unambiguous term, taking an action on the computing device based on the speech input and the unambiguous term.