Abstract: There is provided, in accordance with some embodiments, a computerized method executed by one or more hardware processors, comprising receiving interaction records, where some of the interaction records comprise a cookie value, a URL (Uniform Resource Locator), and a time stamp. The computerized method comprises computing, from the interaction records, interaction sequences each comprising user interactions. Each adjacent pair of user interactions in each interaction sequence has the same unique user identifier, and attributing at least two interaction values to respective user interactions, where the sum of attributed interaction values is equal to the total value, and where each interaction value is computed using rule(s), respective property values, and the total value. The computerized method comprises updating one or more bidding property on an advertising platform based on the attribution, where the bidding property comprises an advertisement bid value or an advertisement keyword.

Abstract: A system operable to attribute a value associated with a series of user interactions to individual interactions in the series, the system including: (a) an interface, configured to obtain information of interactions which are included in the series of interactions; and (b) a processor on which an attribution module is implemented, the attribution module is configured to attribute an apportionment of the value to each out of a plurality of interactions of the series, based on a calibrated attribution scheme and on properties relating to at least one interaction out of the series of interactions, thereby enabling efficient utilization of communication resources.