System and method for inferring anonymized publishers

A system, comprising:

• one or more computer processors programmed to perform operations comprising:
• obtaining data comprising a history of content presentations by a plurality of publishers on a plurality of client devices, the data providing an unambiguous identification of each publisher in a first portion of the publishers and an anonymous identification of each publisher in a second portion of the publishers;
• identifying a pair of publishers comprising a first publisher from the first portion and a second publisher from the second portion;
• calculating, based on the data, a similarity metric for the pair of publishers;
• and
• facilitating, based on the calculated similarity metric, an adjustment of content presentations by the plurality of publishers.

An article, comprising:

• a non-transitory computer-readable medium having instructions stored thereon that, when executed by one or more computer processors, cause the computer processors to perform operations comprising:
• obtaining data comprising a history of content presentations by a plurality of publishers on a plurality of client devices, the data providing an unambiguous identification of each publisher in a first portion of the publishers and an anonymous identification of each publisher in a second portion of the publishers;
• identifying a pair of publishers comprising a first publisher from the first portion and a second publisher from the second portion;
• calculating, based on the data, a similarity metric for the pair of publishers;
• and
• facilitating, based on the calculated similarity metric, an adjustment of content presentations by the plurality of publishers.