Gary Marchionini (2006)
Communications of the ACM, 49(4), 41-46.
DOI: https://doi.org/10.1145/1121949.1121979
Abstract. Marchionini's foundational distinction between lookup and exploratory search — three categories (lookup, learn, investigate) and the UX implications for each. The reference cited in search-UX research distinguishing query-completion from understanding-support.
Tags: software search information-seeking foundational