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Our project has investigated the processes of mediated information retrieval (IR) searching during human information seeking processes to characterize aspects of this process, including information seekers' changing situational contexts; information problems; uncertainty reduction; successive searching, cognitive styles; and cognitive and affective states.(More)
We present a PCFG parsing algorithm that uses a multilevel coarse-to-fine (mlctf) scheme to improve the efficiency of search for the best parse. Our approach requires the user to specify a sequence of nested partitions or equivalence classes of the PCFG non-terminals. We define a sequence of PCFGs corresponding to each partition , where the nonterminals of(More)