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تسجيل مستخدم جديدTowards Geocoding Spatial Expressions
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نشر من قبل
Hussein S. Al-Olimat
تاريخ النشر
2019
مجال البحث
الهندسة المعلوماتية
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English
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Imprecise composite location references formed using ad hoc spatial expressions in English text makes the geocoding task challenging for both inference and evaluation. Typically such spatial expressions fill in unestablished areas with new toponyms for finer spatial referents. For example, the spatial extent of the ad hoc spatial expression north of or 50 minutes away from in relation to the toponym Dayton, OH refers to an ambiguous, imprecise area, requiring translation from this qualitative representation to a quantitative one with precise semantics using systems such as WGS84. Here we highlight the challenges of geocoding such referents and propose a formal representation that employs background knowledge, semantic approximations and rules, and fuzzy linguistic variables. We also discuss an appropriate evaluation technique for the task that is based on human contextualized and subjective judgment.
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