Uncertainty, Semantic
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Uncertainty, Semantic
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Uncertainty, Semantic P ETER F ISHER Department of Information Science, City University, London, UK Synonyms Ambiguity; Discord or non-specificity in spatial data; Senses, alternative; Meaning, multiple; Folksonomy; Vagueness; Non-specificity; Semantic discord Definition When two people look at an instance of the same phenomenon and use a different vocabulary or use the same words in different ways, semantic uncertainty arises. Unfortunately in the storage, manipulation and querying of geographical information this happens very frequently. To organize and assist understanding their environment humans seem to need to identify and name phenomena,
often making arbitrary and vague partitions from a continuum of observable properties of the phenomenon. The naming of the phenomenon however enables people to make reference to features and phenomena so that they can communicate ideas, and opinions about those phenomena to others, and to use them as referents in describing locations and landscapes. In the geographical sc
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