14. A non-transitory computer-readable storage medium containing a set of instructions, that when executed by a processor, cause the processor to process a sequence of characters entered into a user interface, wherein processing the sequence of characters comprises: receiving the sequence of characters from the user interface at least one first sequence prediction based at least in part on a first model and a first evidence source, wherein the first evidence source comprises the sequence of characters, wherein each of the at least one first sequence prediction comprises a first sequence and a first associated probability estimate; generating at least one second sequence prediction based on a second evidence source and a second model, wherein each of the at least one second sequence prediction comprises a second sequence and a second associated probability estimate; wherein the first associated probability estimate and the second associated probability estimate are weighted according to a probability that the first model or the second model comprises a given context sequence; combining the at least one first sequence prediction and the at least one second sequence prediction into at least one combined sequence prediction based at least in part on the first associated probability estimate and the second associated probability estimate; and visually outputting, via the user interface, the at least one combined sequence prediction.
16. The non-transitory computer-readable storage medium according to claim 14 , wherein at least one of the first associated probability estimate or the second associated probability estimate are approximately normalised, wherein approximately normalising the first associated probability estimate or the second associated probability estimate comprises estimating a normalisation factor for the first associated probability estimate or the second associated probability estimate.