Discusses the differences between objectified and interpretive approaches to context. Suggests that in information needs and seeking research (INS), the former approach has been more common. One way of understanding INS phenomena is to define them as patterns of behavior; another way is to understand them as phenomena mediated by social and…

Results from three studies examining 1295 relevance judgments by 36 information retrieval (IR) system end-users are reported. Both the region of the relevance judgments, from non-relevant to highly relevant, and motivations or levels for the relevance judgments are examined. Implications for relevance theory and IR systems evaluation are…

Describes an approximate document ranking process that uses a compact array of in-memory, low-precision approximations for document length. Combined with another rule for reducing the memory required by partial similarity accumulators, the approximation heuristic allows the ranking of large document collections using less than one byte of memory…