1. A method comprising: receiving, by a first device, an input, wherein the first device comprises a sensory prosthesis that is operable to stimulate a physiological system of a recipient in accordance with the received input, wherein the received input represents an environment of the recipient; determining, based on the received input, a first scene classification of the environment of the recipient and a first confidence value of the first scene classification; receiving, from a second device, a second scene classification of the environment of the recipient and a second confidence value of the second scene classification; selecting, based on at least the received second confidence value, a selected scene classification from the first scene classification and the second scene classification, wherein the selecting comprises using a hybrid decision tree to select the selected scene classification from the first scene classification and the second scene classification, and wherein the decision tree receives as inputs at least the first confidence value and the second confidence value; generating a stimulation signal by processing the received input based on the selected scene classification; and stimulating the physiological system of the recipient based on the generated stimulation signal.