Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for categorizing items presented on webpages. An example method includes: extracting text and an image from a webpage including an item to be categorized; providing the text as input to at least one text classifier; providing the image as input to at least one image classifier; receiving at least one first score as output from the at least one text classifier, the at least one first score including a first predicted category for the item; receiving at least one second score as output from the at least one image classifier, the at least one second score including a second predicted category for the item; and combining the at least one first score and the at least one second score to determine a final predicted category for the item.

Abstract: A method and system are provided for reconfiguring a multiple node system after an epoch change in a manner that reduces the overhead and system unavailability typically incurred during reconfiguration. A resource-to-master mapping is established using the combination of a resource-to-bucket hash function and a bucket-to-node hash function. The resource-to-bucket hash function is not changed in response to an epoch change. The bucket-to-node hash function does change in response to epoch changes. Techniques are disclosed for adjusting the dynamic bucket-to-node hash function after an epoch change in a manner that load balances among the new number of nodes in the system. Further, the changes to the bucket-to-node assignments are performed in a way that reduces the number of resources that have to be remastered. In one embodiment, only those resources that lose their masters during an epoch change are assigned new masters during an initial reconfiguration.