Abstract: A network system evaluates candidate GPS routes with respect to map routes that are based on ground truth map data to identify defects in the ground truth map data. Defects in the ground truth map data may include inconsistencies between various attributes of the map data and the actual road network represented by the candidate GPS routes under evaluation. The network system corrects the identified feedback to ensure that the ground truth map data accurately reflects the attributes of the actual road network.

Abstract: A network system evaluates candidate GPS routes with respect to map routes that are based on ground truth map data to identify defects in the ground truth map data. Defects in the ground truth map data may include inconsistencies between various attributes of the map data and the actual road network represented by the candidate GPS routes under evaluation. The network system corrects the identified feedback to ensure that the ground truth map data accurately reflects the attributes of the actual road network.

Abstract: A network system evaluates candidate GPS routes with respect to map routes that are based on ground truth map data to identify defects in the ground truth map data. Defects in the ground truth map data may include inconsistencies between various attributes of the map data and the actual road network represented by the candidate GPS routes under evaluation. The network system corrects the identified feedback to ensure that the ground truth map data accurately reflects the attributes of the actual road network.

Abstract: A network system receives geographic information from a device. The geographic information is representative of a candidate GPS route used by a vehicle to complete a trip. The candidate GPS route is more efficient that a map route determined based on ground truth map data. The network system identifies an ordered sequence of one or more known road segments in the ground truth map data that the transportation vehicle uses to complete a trip represented by the candidate GPS route. To determine the ordered sequence of road segments, the network system may relax constraints on attributes of the map data to identify the ordered sequence of road segments.

Abstract: One or more techniques and/or systems are provided for providing a lens view associated with a map canvas. The map canvas may depict an area comprising one or more locations associated with imagery of such locations (e.g., a map of a shopping district may comprise a toy store associated with imagery of the toy store). Accordingly, the map canvas may be populated with a lens view depicting a location within the map canvas (e.g., depicting imagery of the toy store). A correspondence between a lens heading of the lens view and a map heading of the map canvas may be maintained. For example, responsive to rotation of the map canvas changing a current map heading of the map canvas to a rotated map heading, a current lens heading of the lens view maybe modified to a rotated lens heading corresponding to the rotated map heading.