While PageRank scores correspond to a stationary distribution that could be loosely interpreted as a prior<cite> [18]</cite> , in which case multiplicative combination with query likelihood is sensible, it is not usual to assign a probabilistic interpretation to hub or authority scores. Nonetheless, for the sake of comparison completeness, we applied this idea to the doc-Auth[c→d] algorithm, yielding the following performance changes: from .541, .544, and .564 to .537, .572 and .572 respectively.