Abstract: A database service may distribute resources across different geographic locations or other infrastructures to increase availability of the resources and may provide multiple locations to access resources and isolate failure of resources to a respective location or infrastructure. The processing resources in differing fault tolerance zones may be able to continue operating in the event of an outage impacting an entire fault tolerance zone. The database service may generate a supporting processing cluster in the differing fault tolerance zone that handles at least a portion of the access requests of an initial processing cluster. The database service may provision the supporting processing cluster in a separate fault tolerance zone that has a similar capacity and may provision and maintain the cluster in order to preclude the potential of not having sufficient capacity to recover upon failure of a single fault tolerance zone.

Abstract: Techniques for active learning-based data labeling are described. An active learning-based data labeling service enables a user to build and manage large, high accuracy datasets for use in various machine learning systems. Machine learning may be used to automate annotation and management of the datasets, increasing efficiency of labeling tasks and reducing the time required to perform labeling. Embodiments utilize active learning techniques to reduce the amount of a dataset that requires manual labeling. As subsets of the dataset are labeled, this label data is used to train a model which can then identify additional objects in the dataset without manual intervention. The process may continue iteratively until the model converges. This enables a dataset to be labeled without requiring each item in the data set to be individually and manually labeled by human labelers.

Abstract: A merchant creates a record with a payment processor. As part of the record, the payment processor records identification codes for one or more merchant operators of the merchant system. The merchant operator, such as a vendor, presents their identification code to a user that desires to purchase a product from the vendor. The user's computing device receives the vendor's identification code, as well as transaction details for the desired purchase transaction. The payment processor receives a request from the user's computing device to process the purchase transaction. Based on the identification code received and the transaction details, the payment processor identifies the merchant record and verifies a financial account for the user. The payment processor provides an authentication to the user computer device, which includes an authorization indicator, such as a vendor password. After the vendor views the authorization indicator, the vendor can provide the product to the user.

Abstract: A merchant creates a record with a payment processor. As part of the record, the payment processor records identification codes for one or more merchant operators of the merchant system. The merchant operator, such as a vendor, presents their identification code to a user that desires to purchase a product from the vendor. The user's computing device receives the vendor's identification code, as well as transaction details for the desired purchase transaction. The payment processor receives a request from the user's computing device to process the purchase transaction. Based on the identification code received and the transaction details, the payment processor identifies the merchant record and verifies a financial account for the user. The payment processor provides an authentication to the user computer device, which includes an authorization indicator, such as a vendor password. After the vendor views the authorization indicator, the vendor can provide the product to the user.

Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium and one or more servers in communication, for presenting points of interest in an electronic interactive map at a client device. In one aspect, a method includes receiving, at a client device, an electronic interactive map including a point of interest overlay comprising of at least one point of interest located within the geographic region of the presented map.

Abstract: An error correction system determines a level of error correction protection to apply to a frame of video data to be transmitted by a sending endpoint to a receiving endpoint based on the predicted impact of packet loss as well as the importance of the frame based on inter-frame dependencies, frame size, packet loss probability, historical packet loss pattern, central processing unit (CPU) load, and available network bandwidth. At the receiving endpoint, when packet loss is detected for a particular frame, the receiving endpoint will attempt to recover the frame using protection packets received along with the video data.

Abstract: An error correction system determines a level of error correction protection to apply to a frame of video data to be transmitted by a sending endpoint to a receiving endpoint based on the predicted impact of packet loss as well as the importance of the frame based on inter-frame dependencies, frame size, packet loss probability, historical packet loss pattern, central processing unit (CPU) load, and available network bandwidth. At the receiving endpoint, when packet loss is detected for a particular frame, the receiving endpoint will attempt to recover the frame using protection packets received along with the video data.