Identifying the Meta-Forms of Situations: A Case-Study in Computational Semiotics

Identifying the Meta-Forms of Situations: A Case-Study in Computational Semiotics

Yair Neuman (Department of Education, Ben-Gurion University of the Negev, Beer-Sheva, Israel), Yochai Cohen (Gilasio Coding, Tel-Aviv, Israel), Dan Assaf (Independent Researcher, Tel-Aviv, Israel) and Marcel Danesi (University of Toronto, Toronto, Canada)
Copyright: © 2017 |Pages: 16
DOI: 10.4018/IJSVR.2017010107
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Various tasks of computing meaning involve the identification, representation and processing of interconnected and recurrent patterns known as situations, context, frames or forms. In this paper, the authors propose a novel computational - semiotics approach for addressing various tasks of situation semantics. The approach relies on the dual-space model and the representation of a situation based on domain and function similarity of its constituting parts. The authors illustrate this approach through a worked-out example and test it by automatically by (1) Judging the truth-value of situational propositions and (2) Generating explanations to metaphors.
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Situations: From Formal Theories To Soft Computing

The situated nature of human cognition has been intensively studied (Robbins & Aydede, 2009) with an attempt to represent context in a form available for automatic processing (e.g. McCarthy & Buvac, 1997). Representing situations for automatic processing has implications for the development of future information technology; from building friendly human-computer interfaces to natural language understanding and situation awareness. In this context, Situation Semantics aims “to construct a mathematically rigorous theory of meaning” (Akman, 2009, pp. 402) by “placing situational context (context of situation) at the center of all discussions of meaning” (Akman, 2009, pp. 402). This venture has been mainly pursued by Barwise & Perry (1983)Barwise & Seligman (1997) and Devlin (2006), who have been trying to formulate a mathematically rigorous theory of situation. Despite the rich formalism developed by these authors and others, the attempt to construct a “mathematically rigorous” theory of meaning/situation is in sharp contrast with the accommodating and up to date knowledge on human cognition emphasizing its probabilistic (Griths, Chater, Kemp, Perfors, & Tenenbaum, 2010) rather than logical mathematical form, as well as its heuristic rather than algorithmic nature (Gigerenzer & Gaissmaier, 2011). For instance, let us take the situation of DINNER. What are the objects constituting the Dinner's “Ontology”? A dinner may take place at home or at the restaurant. It may include guests or just family members, and may be used to celebrate thanksgiving or a birthday. While situation theory takes into account the existence of “parameters” as an inherent part of the situation, it does not provide any methodology for identifying the situation's components and relations in a bottom-up fashion. It should be emphasized that while later developments of situation theory seriously consider the linguistic aspect of situations (Devlin, 2006), it does not consider language as a resource for representing a situation in a “soft” and adaptive manner. In this context, it must be noticed that there is an emerging recognition that language mediates a variety of cognitive processes and functions as context for cognition (Barrett, Lindquist, & Gendron, 2007; Neuman, Turney, & Cohen, 2012). Therefore, it seems important to consider ways of fusing cognitive and linguistic resources for better approaching tasks of computational semiotics. In this paper, we adopt the dual-space model of Turney (2012.) proposing (1) domain and (2) function similarity of words as two central dimensions for various tasks of computational semantics. More specifically, we suggest that a meta-form can be approached, as a relational structure comprised of objects and their domain and function similarity.

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