Abstract: Methods, systems, and apparatus for receiving, by a voice action system, data specifying a new voice action for an application different from the voice action system. A voice action intent for the application is generated based at least on the data, wherein the voice action intent comprises data that, when received by the application, requests that the application perform one or more operations specified for the new voice action. The voice action intent is associated with trigger terms specified for the new voice action. The voice action system is configured to receive an indication of a user utterance obtained by a device having the application installed, and determines that a transcription of the user utterance corresponds to the trigger terms associated with the voice action intent. In response to the determination, the voice action system provides the voice action intent to the device.

Abstract: Methods, systems, and apparatus for determining that a software application installed on a user device is compatible with a new voice action, wherein the new voice action is specified by an application developer of the software application. One or more trigger terms for triggering the software application to perform the new voice action are identified. An automatic speech recognizer is biased to prefer the identified trigger terms of the new voice action over trigger terms of other voice actions. A transcription of an utterance generated by the biased automatic speech recognizer is obtained. The transcription of the utterance generated by the biased automatic speech recognizer is determined to include a particular trigger term included in the identified trigger terms. Based at least on determining that the transcription of the utterance generated by the biased automatic speech recognizer includes the particular trigger term, execution of the new voice action is triggered.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for computerized travel services. One of the methods includes identifying photographs using an index of photographs, the photographs being identified from the index as photographs geographically related to a point of interest or destination and having a creation timestamp corresponding to a time of the year; determining for each of the photographs, a relevancy score based at least in part on: selection success data of the photograph for image queries referring to the point of interest or destination, and references to the point of interest or destination in documents associated with the photograph; and selecting a selected photograph from the photographs based at least in part on a respective visual quality score and the respective relevancy scores, the visual quality score representing a degree of visual quality of the respective photographs.

Abstract: In some implementations, (i) audio data representing a voice command spoken by a speaker and (ii) a speaker identification result indicating that the voice command was spoken by the speaker are obtained. A voice action is selected based at least on a transcription of the audio data. A service provider corresponding to the selected voice action is selected from among a plurality of different service providers. One or more input data types that the selected service provider uses to perform authentication for the selected voice action are identified. A request to perform the selected voice action and (i) one or more values that correspond to the identified one or more input data types are provided to the service provider.

Abstract: Methods, systems, and apparatus for receiving, by a voice action system, data specifying trigger terms that trigger an application to perform a voice action and a context that specifies a status of the application when the voice action can be triggered. The voice action system receives data defining a discoverability example for the voice action that comprises one or more of the trigger terms that trigger the application to perform the voice action when a status of the application satisfies the specified context. The voice action system receives a request for discoverability examples for the application from a user device having the application installed, and provides the data defining the discoverability examples to the user device in response to the request. The user device is configured to provide a notification of the one or more of the trigger terms when a status of the application satisfies the specified context.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for computerized travel services. One of the methods includes identifying photographs using an index of photographs, the photographs being identified from the index as photographs geographically related to a point of interest or destination and having a creation timestamp corresponding to a time of the year; determining for each of the photographs, a relevancy score based at least in part on: selection success data of the photograph for image queries referring to the point of interest or destination, and references to the point of interest or destination in documents associated with the photograph; and selecting a selected photograph from the photographs based at least in part on a respective visual quality score and the respective relevancy scores, the visual quality score representing a degree of visual quality of the respective photographs.

Abstract: Methods, systems, and apparatus for receiving, by a voice action system, data specifying a new voice action for an application different from the voice action system. A voice action intent for the application is generated based at least on the data, wherein the voice action intent comprises data that, when received by the application, requests that the application perform one or more operations specified for the new voice action. The voice action intent is associated with trigger terms specified for the new voice action. The voice action system is configured to receive an indication of a user utterance obtained by a device having the application installed, and determines that a transcription of the user utterance corresponds to the trigger terms associated with the voice action intent. In response to the determination, the voice action system provides the voice action intent to the device.

Abstract: Methods, systems, and apparatus for determining that a software application installed on a user device is compatible with a new voice action, wherein the new voice action is specified by an application developer of the software application. One or more trigger terms for triggering the software application to perform the new voice action are identified. An automatic speech recognizer is biased to prefer the identified trigger terms of the new voice action over trigger terms of other voice actions. A transcription of an utterance generated by the biased automatic speech recognizer is obtained. The transcription of the utterance generated by the biased automatic speech recognizer is determined to include a particular trigger term included in the identified trigger terms. Based at least on determining that the transcription of the utterance generated by the biased automatic speech recognizer includes the particular trigger term, execution of the new voice action is triggered.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for computerized travel services. One of the methods includes identifying photographs using an index of photographs, the photographs being identified from the index as photographs geographically related to a point of interest or destination and having a creation timestamp corresponding to a time of the year; determining for each of the photographs, a relevancy score based at least in part on: selection success data of the photograph for image queries referring to the point of interest or destination, and references to the point of interest or destination in documents associated with the photograph; and selecting a selected photograph from the photographs based at least in part on a respective visual quality score and the respective relevancy scores, the visual quality score representing a degree of visual quality of the respective photographs.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for computerized travel services. One of the methods includes identifying photographs using an index of photographs, the photographs being identified from the index as photographs geographically related to a point of interest or destination and having a creation timestamp corresponding to a time of the year; determining for each of the photographs, a relevancy score based at least in part on: selection success data of the photograph for image queries referring to the point of interest or destination, and references to the point of interest or destination in documents associated with the photograph; and selecting a selected photograph from the photographs based at least in part on a respective visual quality score and the respective relevancy scores, the visual quality score representing a degree of visual quality of the respective photographs.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for computerized travel services. One of the methods includes identifying points of interest associated with a destination by querying a geographic data store; for each of the points of interest: identifying photographs using an index of photographs, the photographs being identified from the index as photographs geographically related to the point of interest, determining for each of the photographs a relevancy score based at least in part on selection success data of the photograph for image queries referring to the point of interest and references to the point of interest in documents associated with the photograph, and selecting a selected point of interest photograph from the photographs based at least in part on a respective visual quality score and the respective relevancy scores; and selecting a selected destination photograph from the selected point of interest photographs.