Studying the effectiveness of conversational search refinement through user simulation
2021
A key application of conversational search is refining a user’s search intent by asking a series of clarification questions, aiming to improve the relevance of search results. Training and evaluating such conversational systems currently requires human participation, making it unfeasible to examine a wide range of user behaviors. To support robust training/evaluation of such systems, we propose a simulation framework called COSEARCHER4 that includes a parameterized user simulator controlling key behavioral factors like cooperativeness and patience. Using a standard conversational query clarification benchmark, we experiment with a range of user behaviors, semantic policies, and dynamic facet generation. Our results quantify the effects of user behaviors, and identify critical conditions required for conversational search refinement to be effective.
Research areas