The Role of Intensional and Extensional Interpretation in Semantic Representations – The Intensional and Preextensional Layers in MultiNet

Hermann Helbig, Ingo Glöckner

Abstract

Although it is well known that the full meaning of a concept includes an intentional and an extensional aspect, the latter is neglected in almost all practically used knowledge representations and semantic formalisms, which consider only the interrelationships between concepts but not their referential meaning. In logically oriented representations with the usual model-theoretic interpretation, the extensions of predicates or symbols of the language in general belong to a meta-level (the model level) clearly distinguished from the logical language. In this paper, we show in what way the extensional aspect is important (in addition to the intentional aspect) to account for the full meaning of natural language expressions. The necessity of dealing with both types of meaning is illustrated by means of semantic phenomena like factual and intentional negation, intentional quantification and cardinalities, or by the meaning of prepositions describing set relationships, and others. We will utilize the framework of Multilayered Extended Semantic Networks (MultiNet) to discuss these issues. The MultiNet formalism is successfully used in various NLP applications. Its explicit modeling of intentional and pre-extensional layers offers an explanation of the interplay of intension and extension of conceptual entities in the overall process of constituting the meaning representations of natural language expressions.

References

  1. Carnap, R.: Meaning and Necessity. Chicago University Press, Chicago (1947)
  2. Janas, J.M., Schwind, C.B.: Extensional Semantic Networks. In Findler, N.V., ed.: Associative Networks. Academic Press (1979) 267-305
  3. Brachman, R.J., Schmolze, J.G.: An overview of the KL-ONE knowledge representation system. Cognitive Science 9 (1985) 171-216
  4. Baader, F., Calvanese, D., McGuinness, D., Nardi, D., Patel-Schneider, P., eds.: The Description Logics Handbook. Cambridge University Press, Cambridge (2004)
  5. Lambert, K., ed.: Philosophical Applications of Free Logic. Oxford University Press (1991)
  6. Hobbs, J.: Ontological promiscuity. In: Proc. 23rd Annual Meeting of the ACL. (1985)
  7. Shapiro, S.C., Rapaport, W.J.: SNePS considered as a fully intensional propositional semantic network. In Cercone, N., McCalla, G., eds.: The Knowledge Frontier: Essays in the Representation of Knowledge. Springer, New York (1987) 262-315
  8. Hirst, G.: Existence assumptions in knowledge representation. Artificial Intelligence 49 (1991) 199-242
  9. Bobrow, D., Condoravdi, C., Crouch, R., de Paiva, V., Kaplan, R., Karttunen, L., King, T., Zaenen, A.: A basic logic for textual inference. In: Proceedings of the AAAI Workshop on Inference for Textual Question Answering, Pittsburgh, PA (2005)
  10. Helbig, H.: Knowledge Representation and the Semantics of Natural Language. Springer, Berlin (2006)
  11. Gnörlich, C.: Technologische Grundlagen der Wissensverwaltung für die automatische Sprachverarbeitung. PhD thesis, FernUniversität Hagen, Hagen, Germany (2002)
  12. Hartrumpf, S., Helbig, H., Osswald, R.: The semantically based computer lexicon HaGenLex - Structure and technological environment. Traitement automatique des langues 44 (2003)
  13. Helbig, H., Glöckner, I.: Reasoning over semantic networks - a typology of axioms for natural language inference. In: Proc. MRCS-07, Hyderabad, India (2007) 30-34
  14. Glöckner, I., Hartrumpf, S., Helbig, H.: Automatic knowledge acquisition by semantic analysis and assimilation of textual information. In: Proc. KONVENS 2006, Konstanz (2006)
  15. Pulman, S.G.: Formal and computational semantics: a case study. In: Proc. 7th Int. Workshop on Computational Semantics, Tilburg (2007) 181-196
  16. Nairn, R., Condoravdi, C., Karttunen, L.: Computing relative polarity for textual inference. In: Proceedings of ICoS-5 (Inference in Computational Semantics), Buxton, UK (2006)
  17. Keenan, E., Moss, L.: Generalized quantifiers and expressive power of natural language. In Benthem, J., Meulen, A., eds.: Generalized Quantifiers in Natural Language. Foris (1984)
  18. Glöckner, I., Knoll, A.: Natural-language navigation in multimedia archives: An integrated approach. In: Proc. 7th ACM Multimedia Conference (MM-99), Orlando, FL (1999)
  19. Leveling, J., Helbig, H.: Das NLI-Z39.50 - Natürlichsprachliche Informationssuche zur Verbesserung der Literaturrecherche. In: Proc. KONVENS 2006, Konstanz (2006) 97-100
  20. Helbig, H., Gnörlich, C., Menke, D.: Realization of a user-friendly access to networked information retrieval systems. Informatik-Bericht 196, FernUniversität Hagen (1996)
  21. Hartrumpf, S.: Question answering using sentence parsing and semantic network matching. In: Working Notes for the CLEF 2004 Workshop, Bath, England (2004) 385-392
  22. Leveling, J.: A baseline for NLP in domain-specific information retrieval. In: Accessing Multilingual Information Repositories (Proc. CLEF-05). LNCS-4022. Springer (2006)
  23. Lütticke, R., Gnörlich, C., Helbig, H.: VILAB - a virtual electronic laboratory for applied computer science. In: Proc. Conf. Networked Learning in a Global Environment. (2002)
  24. Glöckner, I.: University of Hagen at QA@CLEF 2006: Answer validation exercise. In Nardi, A., Peters, C., Vicedo, J.L., eds.: Working Notes for the CLEF 2006 Workshop. (2006)
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Paper Citation


in Harvard Style

Helbig H. and Glöckner I. (2007). The Role of Intensional and Extensional Interpretation in Semantic Representations – The Intensional and Preextensional Layers in MultiNet . In Proceedings of the 4th International Workshop on Natural Language Processing and Cognitive Science - Volume 1: NLPCS, (ICEIS 2007) ISBN 978-972-8865-97-9, pages 92-105. DOI: 10.5220/0002415900920105


in Bibtex Style

@conference{nlpcs07,
author={Hermann Helbig and Ingo Glöckner},
title={The Role of Intensional and Extensional Interpretation in Semantic Representations – The Intensional and Preextensional Layers in MultiNet},
booktitle={Proceedings of the 4th International Workshop on Natural Language Processing and Cognitive Science - Volume 1: NLPCS, (ICEIS 2007)},
year={2007},
pages={92-105},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0002415900920105},
isbn={978-972-8865-97-9},
}


in EndNote Style

TY - CONF
JO - Proceedings of the 4th International Workshop on Natural Language Processing and Cognitive Science - Volume 1: NLPCS, (ICEIS 2007)
TI - The Role of Intensional and Extensional Interpretation in Semantic Representations – The Intensional and Preextensional Layers in MultiNet
SN - 978-972-8865-97-9
AU - Helbig H.
AU - Glöckner I.
PY - 2007
SP - 92
EP - 105
DO - 10.5220/0002415900920105