Abstract: An image search method is provided. In the method, an image selection page of a messaging application is displayed. An input image for a search is determined based on an operation performed by a user on the image selection page. A search is performed for at least one output image similar to the input image based on a plurality of types of image characteristics that indicate levels of similarity between images. Each of the ay least one output image is determined to be similar to the input image based on at least one of the types of image characteristics. A search result list is generated according to the at least one output image. Further, the search result list is displayed.

Abstract: Methods, computer systems, and apparatus, including computer programs encoded on computer storage media, for training a perspective computer vision model. The model is configured to receive input data characterizing an input scene in an environment from an input viewpoint and to process the input data in accordance with a set of model parameters to generate an output perspective representation of the scene from the input viewpoint. The system trains the model based on first data characterizing a scene in the environment from a first viewpoint and second data characterizing the scene in the environment from a second, different viewpoint.

Abstract: A curation score associated with an entity is determined. A good interest probability value associated with the entity is determined. A content feed for a user that includes one or more web documents is generated based in part on the curation score and the good interest probability value.

Abstract: A query is received from a user. A query event type and a query time range associated with the query are determined. An estimated amount of data to be queried associated with the determined query time range is determined based on at least a historical number of the query event type of the user. An allowable amount of data to be queried supported by a database for a single query is determined. One or more sub-queries for the received query are generated. Each sub-query is associated with a different time period within the determined query time range. A corresponding amount of data to be queried associated with each time period is less than, or equal to, the determined allowable amount of data to be queried. The database is queried with the generated one or more sub-queries.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for agent trajectory prediction using vectorized inputs.

Abstract: Techniques for verifying message authenticity is provided. In some implementations, a verification request to verify authenticity of a first message is received from a user computing device. The verification request includes a first user identifier and verification information. A delivery message record is obtained. The delivery message record includes a plurality of entries associated with one or more messages sent to one or more user computing devices. Each entry includes a user identifier and feature information of a respective message of the one or more messages. At least one entry that has a second user identifier matching the first user identifier is identified. In response to determining that the feature information of the identified at least one entry matches the verification information from the verification request, a verification message is provided to the user computing device. The verification message indicates that authenticity of the first message is verified.

Abstract: Techniques for verifying message authenticity is provided. In some implementations, a verification request to verify authenticity of a first message is received from a user computing device. The verification request includes a first user identifier and verification information. A delivery message record is obtained. The delivery message record includes a plurality of entries associated with one or more messages sent to one or more user computing devices. Each entry includes a user identifier and feature information of a respective message of the one or more messages. At least one entry that has a second user identifier matching the first user identifier is identified. In response to determining that the feature information of the identified at least one entry matches the verification information from the verification request, a verification message is provided to the user computing device. The verification message indicates that authenticity of the first message is verified.

Abstract: Data is identified for network transmission. A waiting period is determined for the particular data based on a content of the information. The particular data is transmitted to a device using a first transmission method. The first transmission method includes a mechanism to determine whether the particular data was received by the device. Determining whether the particular data transmitted using the first transmission method was received by the device. The particular data and a predetermined answer response identifier are transmitted to the device using a second transmission method. The second transmission method does not include a mechanism to determine whether the particular data was received by the device. Determining whether the particular data transmitted using the second transmission method was received by the device based on whether a response including the predetermined answer response identifier has been received. Transmitting additional data to the device using a non-mobile communication method.

Abstract: Techniques for verifying message authenticity is provided. In some implementations, a verification request to verify authenticity of a first message is received from a user computing device. The verification request includes a first user identifier and verification information. A delivery message record is obtained. The delivery message record includes a plurality of entries associated with one or more messages sent to one or more user computing devices. Each entry includes a user identifier and feature information of a respective message of the one or more messages. At least one entry that has a second user identifier matching the first user identifier is identified. In response to determining that the feature information of the identified at least one entry matches the verification information from the verification request, a verification message is provided to the user computing device. The verification message indicates that authenticity of the first message is verified.

Abstract: One or more content examples associated with a content channel are received. One or more entities are determined based on the one or more content examples. One or more web documents are provided in a content feed based on the one or more determined entities.

Abstract: A method for pose recognition includes storing parameters for configuration of an automated pose recognition system for detection of a pose of a subject represented in a radio frequency input signal. The parameters having been determined by a first process including accepting training data including a number of images including poses of subjects and a corresponding number of radio frequency signals and executing a parameter training procedure to determine the parameters. The parameter training procedure including, receiving features characterizing the poses in each of the images, and determining the parameters that configure the automated pose recognition system to match the features characterizing the poses from the corresponding radio frequency signals.

Abstract: Techniques for verifying message authenticity is provided. In some implementations, a verification request to verify authenticity of a first message is received from a user computing device. The verification request includes a first user identifier and verification information. A delivery message record is obtained. The delivery message record includes a plurality of entries associated with one or more messages sent to one or more user computing devices. Each entry includes a user identifier and feature information of a respective message of the one or more messages. At least one entry that has a second user identifier matching the first user identifier is identified. In response to determining that the feature information of the identified at least one entry matches the verification information from the verification request, a verification message is provided to the user computing device. The verification message indicates that authenticity of the first message is verified.

Abstract: Data is identified for network transmission. A waiting period is determined for the particular data based on a content of the information. The particular data is transmitted to a device using a first transmission method. The first transmission method includes a mechanism to determine whether the particular data was received by the device. Determining whether the particular data transmitted using the first transmission method was received by the device. The particular data and a predetermined answer response identifier are transmitted to the device using a second transmission method. The second transmission method does not include a mechanism to determine whether the particular data was received by the device. Determining whether the particular data transmitted using the second transmission method was received by the device based on whether a response including the predetermined answer response identifier has been received. Transmitting additional data to the device using a non-mobile communication method.

Abstract: Techniques for generating an index for enhanced search based on user interests are disclosed. In some embodiments, a system/process/computer program product for generating an index for enhanced search based on user interests includes aggregating a plurality of web documents associated with one or more entities, wherein the web documents are retrieved from a plurality of online content sources including websites; determining relationships between each of the plurality of web documents, wherein the relationships include online relationships; and generating an index that includes the plurality of web documents and the relationships between each of the plurality of web documents.

Abstract: Techniques for providing user interest modeling are disclosed. In some embodiments, a system/process/computer program product for providing user interest modeling includes determining a plurality of interests associated with a user account and generated a content feed for a user that includes one or more web documents based on the plurality of interests.

Abstract: Techniques for enhanced search for generating a content feed are disclosed. In some embodiments, a system/process/computer program product for enhanced search for generating a content feed includes determining a plurality of interests for a user, wherein the user is associated with a user account; searching one or more websites based on the plurality of interests associated with the user; generating an index that includes a plurality of web documents and relationships between each of the plurality of web documents; and generating a content feed that includes at least a subset of the plurality of web documents based on a ranking, wherein the ranking is based on the plurality of interests associated with the user.

Abstract: This invention provides a convenient method for converting oximes into enamides. The process does not require the use of metallic reagents. Accordingly, it produces the desired compounds without the concomitant production of a large volume of metallic waste. The enamides are useful precursors to amides and amines. The invention provides a process to convert a prochiral enamide into the corresponding chiral amide. In an exemplary process, a chiral amino center is introduced during hydrogenation through the use of a chiral hydrogenation catalyst. In selected embodiments, the invention provides methods of preparing amides and amines that include the 1,2,3,4-tetrahydro-N-alkyl-1-naphthalenamine or 1,2,3,4-tetrahydro-1-naphthalenamine substructure.

Abstract: A query is received from a user. A query event type and a query time range associated with the query are determined. An estimated amount of data to be queried associated with the determined query time range is determined based on at least a historical number of the query event type of the user. An allowable amount of data to be queried supported by a database for a single query is determined. One or more sub-queries for the received query are generated. Each sub-query is associated with a different time period within the determined query time range. A corresponding amount of data to be queried associated with each time period is less than, or equal to, the determined allowable amount of data to be queried. The database is queried with the generated one or more sub-queries.

Abstract: A time-of-flight camera images an object around a corner or through a diffuser. In the case of imaging around a corner, light from a hidden target object reflects off a diffuse surface and travels to the camera. Points on the diffuse surface function as a virtual sensors. In the case of imaging through a diffuser, light from the target object is transmitted through a diffusive media and travels to the camera. Points on a surface of the diffuse media that is visible to the camera function as virtual sensors. In both cases, a computer represents phase and intensity measurements taken by the camera as a system of linear equations and solves a linear inverse problem to (i) recover an image of the target object; or (ii) to compute a 3D position for each point in a set of points on an exterior surface of the target object.

Abstract: This invention provides a convenient method for converting oximes into enamides. The process does not require the use of metallic reagents. Accordingly, it produces the desired compounds without the concomitant production of a large volume of metallic waste. The enamides are useful precursors to amides and amines. The invention provides a process to convert a prochiral enamide into the corresponding chiral amide. In an exemplary process, a chiral amino center is introduced during hydrogenation through the use of a chiral hydrogenation catalyst. In selected embodiments, the invention provides methods of preparing amides and amines that include the 1,2,3,4-tetrahydro-N-alkyl-1-naphthalenamine or 1,2,3,4-tetrahydro-1-naphthalenamine sub structure.