Methods and systems for identifying competitors using content items including content extensions

A system for identifying competitors using content extensions, comprising:

• a data processing system having an auction log analysis module and a competitor identification module, the data processing system further comprising:
• a memory storing processor-executable instructions;
• and
• a processor configured to execute the processor-executable instructors to:
• receive, from a computing device, a request for a list of competitors of an online content provider;
• identify a plurality of content placement events in which the online content provider participated
• identify, from the identified content placement events in which the online content provider participated, a plurality of competing content providers each of which respectively participated in at least one respective content placement event of the plurality of content placement events, each of the competing content providers' participation being associated with a respective content item selected for display in one of the identified content placement events, each content item having a first type of content extension;
• for each of the identified competing content providers:
• identify a sub-set of content placement events of the plurality of content placement events in which the competing content provider participated, and in which the content item associated with the competing content provider was selected for display;
• determine, for each content placement event of the sub-set of content placement events, whether a content item of the online content provider was also selected for display;
• increment a numerator counter for each positive determination;
• and
• calculate a ratio of a count of the numerator counter to a total number of content placement events of the subset of content placement events;
• and
• compute an overlap rate for the identified competing content provider using the ratio;
• generate a ranking, specific to the first type of content extension, of one or more of the competing content providers based on their respective overlap rate;
• and
• provide, for display at the computing device in response to the request, a list of a top one or more of the competing content providers, each competing content provider of the list having an overlap rate greater than a predetermined threshold.