Abstract: A request for a valuation of a data set is received, over a network, from a requesting user. A plurality of valuation elements associated with the data set are identified, using a data processing system. A data valuation estimate is determined, using the data processing system, for the data set using the plurality of valuation elements. A representation of the data valuation estimate is transmitted, over the network, to the requesting user such that the representation of the data valuation estimate is caused to be displayed on a display device associated with the requesting user.

Abstract: A plurality of persona attributes are identified within a data set received from a data seller. A persona privacy risk associated with the persona attributes of the dataset is determined. The persona privacy risk comprises an estimate of the potential sensitivity of the persona attributes. A plurality of identity attributes within a data set received from a data seller are identified. An identity privacy risk associated with the plurality of identity attributes is determined. The persona privacy risk comprises an estimate of the risk that the plurality of identity attributes identify the data seller. A total privacy risk is then determined using the persona privacy risk and the identity privacy risk associated with the dataset, the total privacy risk comprising an estimate of a total risk to the privacy of the data seller that disclosure of the dataset represents.