10. An apparatus comprising: a memory configured to store instructions; and at least one processor configured to execute the instructions stored in the memory to: identify a group of input listings from at least two different sources in response to a search query, each input listing comprising different item listing variants corresponding to a particular item; establish at least a portion of the group of input listings that share at least one common attribute representing the particular item; assign a weight to each of the at least two different sources based at least in part on a correlation of sample input listings from each of the at least two different sources to input listings from a trusted source or based at least in part on a correlation of the input listings from the at least the portion of the group of input listings to an existing consolidated list; select an item listing variant from the at least the portion of the group of input listings as a consolidated listing based at least in part on the at least one common attribute and the weight assigned to each of the at least two different sources; map each input listing from the at least the portion of the group of input listings to the consolidated listing; and transmit the consolidated listing instead of the different item listing variants to a client device for display.
10. An apparatus comprising: a memory configured to store instructions; and at least one processor configured to execute the instructions stored in the memory to: identify a group of input listings from at least two different sources in response to a search query, each input listing comprising different item listing variants corresponding to a particular item; establish at least a portion of the group of input listings that share at least one common attribute representing the particular item; assign a weight to each of the at least two different sources based at least in part on a correlation of sample input listings from each of the at least two different sources to input listings from a trusted source or based at least in part on a correlation of the input listings from the at least the portion of the group of input listings to an existing consolidated list; select an item listing variant from the at least the portion of the group of input listings as a consolidated listing based at least in part on the at least one common attribute and the weight assigned to each of the at least two different sources; map each input listing from the at least the portion of the group of input listings to the consolidated listing; and transmit the consolidated listing instead of the different item listing variants to a client device for display. 17. The apparatus of claim 10 , wherein the group of input listings further comprises different input listings that are unassociated with the at least one common attribute value.