Modern user interfaces can take advantage of multiple input modalities such as speech, gestures, handwriting...to increase robustness and flexibility. The construction of such multimodal interfaces would be greatly facilitated by a unified framework that provides methods to characterize and interpret multimodal inputs. In this paper we describe a semantic model and a multimodal grammer structure for a broad class of multimodal applications. We also present a set of grammar-based Java tools that facilitate the construction of multimodal input processing modules, including a connectionist network for multimodal semantic integration.

23 pages

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