Importance

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Abstract

A method for content delivery includes obtaining responses from a first plurality of users to a second plurality of items of content that were delivered to the users over a communication network. For each item, a respective vector is created corresponding to the responses of the users to the item. Distances between the items are computed responsively to the vectors. A first item is selected for delivery to a given user based on a previous response of the given user to a second item and to a distance computed between the first and second items responsively to the vectors. Following the delivery of the first item, upon receiving a response to the first item from the given user, the distances computed between the items are updated based on the response to the first item. The updated distances are applied in selecting a further item for delivery to another user.

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First Claim