Abstract: The disclosed technology provides accurate arrival alerts to a destination. In some embodiments the disclosed technology utilizes a destination specific model that can take into account location specific factors such as traffic around the destination, best approaches to the destination, other likely intermediate stops on the way to the destination, etc. In some embodiments, the present technology aims to provide an arrival alert to the destination at a consistent time interval prior to a user arriving at the destination.

Abstract: Exemplary methods, apparatuses, and systems receive a browsing request to view an item offered by a first third party retailer. An estimated inventory value for the item at the first third-party retailer is retrieved. The estimated inventory value is maintained using a combination of a history of purchases of the item and a history of inventory values for the item received from one or more third party retailers. A representation of the item as being available for purchase is transmitted to a user device based upon the estimated inventory value for the item. In response to receiving a request to initiate a purchase of the item, a request for a current inventory value for the item is transmitted to a retail server. The purchase of the item is initiated in response to determining the item is available based upon the received current inventory value.

Abstract: A process is provided that reduces the amount of data for a map tile that could not be displayed separately on the scale of that tile. The process generates an equivalent of the road data by rasterizing the vectors representing road segments lying within a tile and generating a connectivity mask that keeps track of which pixels are connected to which other pixels along the vectors. The process constructs an undirected graph. Each “on” pixel of the undirected graph represents a vertex and the vertices are connected by edges generated from the connectivity graph, but without a set direction. The process traces the undirected graph to generate chains of connected road segments and takes the chains and simplifies them in order to reduce the amount of data that must be stored and transmitted for the tile in order to produce all the visible roads of the tile at that scale.

Abstract: Exemplary methods, apparatuses, and systems receive a browsing request to view an item offered by a first third party retailer. An estimated inventory value for the item at the first third-party retailer is retrieved. The estimated inventory value is maintained using a combination of a history of purchases of the item and a history of inventory values for the item received from one or more third party retailers. A representation of the item as being available for purchase is transmitted to a user device based upon the estimated inventory value for the item. In response to receiving a request to initiate a purchase of the item, a request for a current inventory value for the item is transmitted to a retail server. The purchase of the item is initiated in response to determining the item is available based upon the received current inventory value.

Abstract: A process is provided that reduces the amount of data for a map tile that could not be displayed separately on the scale of that tile. The process generates an equivalent of the road data by rasterizing the vectors representing road segments lying within a tile and generating a connectivity mask that keeps track of which pixels are connected to which other pixels along the vectors. The process constructs an undirected graph. Each “on” pixel of the undirected graph represents a vertex and the vertices are connected by edges generated from the connectivity graph, but without a set direction. The process traces the undirected graph to generate chains of connected road segments and takes the chains and simplifies them in order to reduce the amount of data that must be stored and transmitted for the tile in order to produce all the visible roads of the tile at that scale.

Abstract: Apparatus and method for simplifying vector road network data. For example, a method in accordance with one embodiment comprises: receiving input data comprising a vector road network specifying vertices and edges; removing discontinuities in paths defined by the vertices and edges; chaining adjacent edges, the chain reducing the number of vertices and producing a set of paths; merging spatially proximal paths to create a set of merged paths; and determining a set of reduced paths from the set of merged paths.