Automatic combination of multiple ranked retrieval systems

摘要: Retrieval performance can often be improved significantly by using a number of different retrieval algorithms and combining the results, in contrast to just single algorithm. This is because algorithms, or experts, emphasize document query features when determining relevance therefore retrieve sets documents. However, it unclear how experts are combined, general, yield superior overall estimate. We propose method which estimates made automatically combined result performance. apply two expert combination tasks. The applications demonstrate that identify high combinations also novel means for effectiveness experts.