1. A computer-implemented method comprising: receiving a hotword followed by a voice command; determining that the voice command satisfies one or more predetermined criteria associated with designating the voice command as a hotword, wherein a voice command that is designated as a hotword is treated as a voice input regardless of whether the voice command is preceded by another hotword; and in response to determining that the voice command satisfies one or more predetermined criteria associated with designating the voice command as a hotword, designating by using one or more computer devices, the voice command as a hotword.
1. A computer-implemented method comprising: receiving a hotword followed by a voice command; determining that the voice command satisfies one or more predetermined criteria associated with designating the voice command as a hotword, wherein a voice command that is designated as a hotword is treated as a voice input regardless of whether the voice command is preceded by another hotword; and in response to determining that the voice command satisfies one or more predetermined criteria associated with designating the voice command as a hotword, designating by using one or more computer devices, the voice command as a hotword. 12. The method of claim 1 , wherein a voice command that is designated as a hotword is input to at least one of a speech recognizer or a semantic interpreter without being preceded by a hotword.