This disclosure describes techniques to augment the built-in grammar of a general-purpose voice-activated virtual assistant with custom commands and actions that are specific to a particular make and model of a device such as an in-vehicle system. The techniques enable the virtual assistant to service implicit commands that make no reference to vehicular make by providing custom, make-specific responses. A single, consistent grammar enables the general-purpose virtual assistant to handle device-specific commands without the user having to provide a query that includes a device-specific invocation phrase.
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Singhal, Amit and Lin, Yao, "Implicit Invocation of Device-specific Custom Actions Using a Virtual Assistant", Technical Disclosure Commons, (November 28, 2021)