This study proposes a framework for representing constructional semantic fields in vector space by integrating cognitive and distributional semantics. Cognitive semantics highlights prototype structure and schematic knowledge, whereas distributional s...
This study proposes a framework for representing constructional semantic fields in vector space by integrating cognitive and distributional semantics. Cognitive semantics highlights prototype structure and schematic knowledge, whereas distributional semantics models meaning as spatial configuration. Yet neither sufficiently explains the internal organization of constructional meaning. Drawing on Construction Grammar(Goldberg 1995, 2006), constructions are treated as the basic unit of analysis, and constructional semantic fields are conceived as dynamic systems composed of a central schema and distributed focal meanings. The central meaning is not a statistical average or geometric centroid, but a schematic foundation that licenses diverse interpretations. Corpora provide only focal meanings instantiated in context; the central schema is inferred from their patterned distribution. Internal organization is analyzed along two dimensions: direction and displacement. Direction captures clustering patterns formed by recurring co-occurrence structures, reflecting distinct usage groupings. Displacement refers to graded variation in alignment with the central schema within a given direction. This distinction differentiates peripheral extension from semantic divergence and offers a distributional account of the polysemy–homonymy boundary. A case study of the Korean plural suffix -tul illustrates how constructional meanings can be systematically modeled in vector space, linking cognitive and distributional perspectives.