Abstract: A machine-learning classification system for a hosted data storage service classifies documents in storage domains of the hosted data storage service. A hosted data storage service can include isolated storage domains that are individually configured to provide domain access by an authorized entity for a domain and prohibit access to the domain by unauthorized entities. A machine-learned domain-specific classifier is associated with a storage domain and is configured to generate a classification label for documents of the entity associated with the respective storage domain. A training system is configured to generate a machine-learned domain-specific classifier using a subset of annotated documents from the selected storage domain.

Abstract: A frame receives a portable media player. The frame includes connection elements to provide electrical connection between the portable media player and a vehicle media system, and a guide to align the portable media player with the connection elements. A case for a portable media player has an interior space configured to accommodate different configurations of portable media players, and an exterior configured to fit within a receptacle of a vehicle. A cup has an interior space configured to receive a portable media player and a coupler to provide electrical connection between the player and a media system. Sending a command to the portable device causing the portable device to enter a sleep state when the vehicle off, reducing a level of drain by the portable device from a power source of the vehicle. A portable media player may be controlled by the vehicle media system.