1. A method comprising: receiving, using a computer system, a group of input listings from at least two distinct sources comprising different item listing variants corresponding to an item that result from a search initiated in response to a search query; identifying, using the computer system, at least one common attribute representing the item among at least a portion of the group of input listings; assigning a weight to each of the at least two distinct sources based at least in part on a correlation of sample input listings from each of the at least two distinct 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 listing; selecting an item listing variant from 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 distinct sources; mapping, using the computer system, each input listing from the at least the portion of the group of input listings to the consolidated listing; and transmitting for display, using the computer system, the consolidated listing instead of the group of input listings comprising the different item listing variants corresponding to the item.