Abstract
This contribution presents an overview of POPEL, a natural language generation system that is part of the XTRA dialog system. POPEL’s main features are: bidirectional interaction between the “what-to-say” and the “how-to-say” components, incremental selection and realization of the utterance, and the generation of pointing gestures adapted to the user. The “whatto-say” component consists of a selector which determines the conceptual content, an activator which passes the conceptual units to the realizer, a request handler for requests resulting from the verbalization process, and a context handler which handles the choice of descriptions. The decisions made by these components are based heavily on contextual knowledge. The “how-to-say” component is especially designed for the requirements of POPEL. Using intermediate linguistic based descriptions, it translates the non-linguistically oriented representation of the content into natural language. The gesture generator ZORA determines and visualizes pointing gestures based on domain dependent rules. POPEL is realized on a (simulated) parallel processor.
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Reithinger, N. (1991). POPEL — A Parallel and Incremental Natural Language Generation System. In: Paris, C.L., Swartout, W.R., Mann, W.C. (eds) Natural Language Generation in Artificial Intelligence and Computational Linguistics. The Kluwer International Series in Engineering and Computer Science, vol 119. Springer, Boston, MA. https://doi.org/10.1007/978-1-4757-5945-7_7
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