An item tracking system includes a memory storing an encoded vector library comprising a plurality of encoded vectors, each encoded vector comprising a plurality of values associated with at least one attribute and associated with an item identifier for a first object; and a processor operably coupled to the memory. The processor is configured to receive a first encoded vector for a second object, remove one or more encoded vectors from the encoded vector library, compare the first encoded vector to encoded vectors in the encoded vector library, identify a second encoded vector that most closely matches the first encoded vector based on the plurality of values, identify a first item identifier associated with the second encoded vector, and output the first item identifier.