An extended, recursive version of attribute-value type data structures, where a value can, in turn, be a feature structure. It indicates the kind of entity it represents with a type, and the values with an associated collection of feature-value or attribute-value pairs. In the typed feature structure, a value may be nil, a variable, an atom, or another typed feature structure.
Published in Chapter:
Speech-Centric Multimodal User Interface Design in Mobile Technology
Dong Yu (Microsoft Research, USA) and Li Deng (Microsoft Research, USA)
Copyright: © 2008
|Pages: 17
DOI: 10.4018/978-1-59904-871-0.ch028
Abstract
Multimodal user interface (MUI) allows users to interact with a computer system through multiple human- computer communication channels or modalities. Users have the freedom to choose one or more modalities at the same time. MUI is especially important in mobile devices due to the limited display and keyboard size. In this chapter, we provide a survey of the MUI design in mobile technology with a speech-centric view based on our research and experience in this area (e.g., MapPointS and MiPad). In the context of several carefully chosen case studies, we discuss the main issues related to the speechcentric MUI in mobile devices, current solutions, and future directions.