Abstract: Systems, methods, and non-transitory computer-readable media can generate a set of clusters using sample content items in which a set of user features are represented, the sample content items being clustered based at least in part on their similarity to one another; obtain one or more content items that capture a set of user features corresponding to a given user; determine that the user corresponds to a given cluster in the set of clusters based at least in part on the features of the user; and assign an avatar associated with the cluster to the user.

Abstract: Systems, methods, and non-transitory computer-readable media can generate a set of clusters using sample content items in which a set of user features are represented, the sample content items being clustered based at least in part on their similarity to one another; obtain one or more content items that capture a set of user features corresponding to a given user; determine that the user corresponds to a given cluster in the set of clusters based at least in part on the features of the user; and assign an avatar associated with the cluster to the user.

Abstract: A method for navigation includes storing map data on a server, the map data including vector information delineating roads in a map. A portion of the vector information corresponding to an area in which a user of a mobile client device is traveling is downloaded from the server to the client device. Approximate position coordinates of the user are found using a location providing device associated with the client device and are corrected in the client device, using the downloaded vector information, so as to determine a location of the user on one of the roads in the map. A navigation aid is provided to the user of the client device based on the determined location.

Abstract: A method for navigation includes storing map data on a server, the map data including vector information delineating roads in a map. A portion of the vector information corresponding to an area in which a user of a mobile client device is traveling is downloaded from the server to the client device. Approximate position coordinates of the user are found using a location providing device associated with the client device and are corrected in the client device, using the downloaded vector information, so as to determine a location of the user on one of the roads in the map. A navigation aid is provided to the user of the client device based on the determined location.

Abstract: A method for displaying a map includes storing map data on a server including a plurality of layers, which include vector information delineating features in the map belonging to a respective feature category, and a set of templates, each such template being associated with a respective one of the layers and indicating a visual characteristic of the features in the layer with which the template is associated. At least a subset of the templates is downloaded to a client device from the server, as is the vector information in a portion of one or more of the layers of the map data corresponding to a selected area of the map. Based on the downloaded vector information, an image of the selected area of the map is rendered on the client device in accordance with the visual characteristic indicated by the downloaded templates.

Abstract: A method for displaying a map on a mobile client device includes storing map data on a server, the map data defining objects appearing in the map and comprising vector coordinates of the objects in a predetermined frame of reference. Upon receiving at the server a request from the client device to provide a map of an area along a route on which a user of the client device is to travel, a heading of travel of the user on the route is determined, and the vector coordinates are transformed on the server into a rotated frame of reference, which is approximately aligned with the heading of the user. A portion of the map data corresponding to the area along the route and including the transformed vector coordinates is downloaded to the client device from the server. An image of the area of the map in the rotated frame of reference is rendered on the client device, based on the downloaded map data.

Abstract: A method for navigation includes storing map data on a server, the map data including vector information delineating roads in a map. A portion of the vector information corresponding to an area in which a user of a mobile client device is traveling is downloaded from the server to the client device. Approximate position coordinates of the user are found using a location providing device associated with the client device and are corrected in the client device, using the downloaded vector information, so as to determine a location of the user on one of the roads in the map. A navigation aid is provided to the user of the client device based on the determined location.

Abstract: A method for displaying a map on a mobile client device includes storing map data on a server, the map data defining objects appearing in the map and comprising vector coordinates of the objects in a predetermined frame of reference. Upon receiving at the server a request from the client device to provide a map of an area along a route on which a user of the client device is to travel, a heading of travel of the user on the route is determined, and the vector coordinates are transformed on the server into a rotated frame of reference, which is approximately aligned with the heading of the user. A portion of the map data corresponding to the area along the route and including the transformed vector coordinates is downloaded to the client device from the server. An image of the area of the map in the rotated frame of reference is rendered on the client device, based on the downloaded map data.

Abstract: A method for displaying a map includes storing map data on a server including a plurality of layers, which include vector information delineating features in the map belonging to a respective feature category, and a set of templates, each such template being associated with a respective one of the layers and indicating a visual characteristic of the features in the layer with which the template is associated. At least a subset of the templates is downloaded to a client device from the server, as is the vector information in a portion of one or more of the layers of the map data corresponding to a selected area of the map. Based on the downloaded vector information, an image of the selected area of the map is rendered on the client device in accordance with the visual characteristic indicated by the downloaded templates.

Abstract: A method for navigation includes storing map data on a server, the map data including vector information delineating roads in a map. A portion of the vector information corresponding to an area in which a user of a mobile client device is traveling is downloaded from the server to the client device. Approximate position coordinates of the user are found using a location providing device associated with the client device and are corrected in the client device, using the downloaded vector information, so as to determine a location of the user on one of the roads in the map. A navigation aid is provided to the user of the client device based on the determined location.