Abstract: Methods and apparatus for in-line editing of web page content with reduced disruption of logical and presentational structure of content are described. In one embodiment, a rendering of a web page is presented in a what-you-see-is-what-you-get (WYSIWYG) editing environment. The presenting includes overlaying an editing control layer for accessing editing functions of the what-you-see-is-what-you-get editing environment, and an electronic commerce web page layer derived from an electronic commerce web page document. The presenting includes inserting into structural tags of the electronic commerce web page document attribute data. The attribute data identifies editing functions available from the what-you-see-is-what-you-get editing environment for elements of editable content of the electronic commerce web page document.

Abstract: Example systems and methods for context-aware recommendation generation are described. In one implementation, item models are built using user preference data of multiple users and item information of multiple items. When a recommendation request corresponding to a user is received, the profile of that user is retrieved from the user profile database. Given the profile of the user and the item models, utility scores are then computed for the candidate items. Our system exploits a novel approach to detect any sudden and significant changes in the preference data of the given user. If a change is detected, the utility scores are adapted to prioritize the user's most recent preferences. The computed utility scores are used as the basis for ranking the items. A subset of items with highest scores is then selected as recommendations and is presented to the user.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for tracking offline purchases. One of the methods includes receiving information from a first user device identifying a requested commerce object, a geographical area, and an advertising identifier, identifying a plurality of sources of available inventory data for physical retail locations, searching the plurality of sources to determine one or more physical retail locations that have available inventory of the commerce object, serving instructions for a presentation of a user interface to a second user device, providing instructions for presentation of a prompt regarding whether the requested commerce object was purchased, receiving a response indicating that the requested commerce object was purchased, and storing data indicating the purchase in a memory with the advertising identifier.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for determining which of multiple vendors have a product in stock.