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Abstract. Abundant research has been devoted to understanding the complexity of the biogeochemical and physical processes that… Expand In this paper, an empirical study of tagging behaviour in web-based bibliographic annotation systems is presented. Starting from… Expand vector space model for text data (Salton & McGill, 1983). In this model, each document in a corpus is represented by a term… Expand The complexity and diversity of government regulations make understanding and retrieval of regulations a non-trivial task. One of… Expand Abstract As the amount of electronic information increases, traditional lexical (or Boolean) information retrieval techniques… Expand It is often desirable to predict or constrain the lexical choices people make with spoken language systems. I discuss lexical… Expand We describe Pad++, a zoomable graphical sketchpad that we are exploring as an alternative to traditional window and icon-based… Expand An agent's ability to understand an utterance depends upon its ability to relate that utterance to the preceding discourse. The… Expand A multidatabase system provides integrated access to heterogeneous, autonomous local databases in a distributed system. An… Expand In conventional Boolean retrieval systems, users have difficulty controlling the amount of output obtained from a given query… Expand