24. The apparatus of claim 21 , wherein the means for determining the quantity of states of the input gesture that match corresponding states of the modeled training gesture determined to have the highest likelihood further comprises: means for determining the quantity of states for which an extracted median for the input gesture in each state is greater than or equal to a minimum of extracted medians in a corresponding state for a set of training samples of the modeled training gesture determined to have the highest likelihood.
21. An apparatus comprising: means for determining, based on applying an input gesture to a vocabulary of modeled training gestures: a likelihood that the input gesture matches each modeled training gesture, and a modeled training gesture having a highest likelihood; means for determining, subsequent to determining the modeled training gesture having the highest likelihood, a quantity of states of the input gesture that match corresponding states of the modeled training gesture determined to have the highest likelihood, wherein each state of both the input gesture and the modeled training gesture comprises a portion of a gesture; and means for rejecting the input gesture if the determined quantity of matching states does not satisfy a threshold, wherein the threshold expresses a quantity or percentage of the total quantity of the states of the input gesture.