Error Handling Of Spoken Dialogue System
...extent, and also bring about enormous business opportunities. However, Due to imperfect recognition components, the occurrence of errors is avoidable. This congenital defect has hindered the development of this technology.
In this paper, I explain the error handling techniques in overview, from the importance of error handling, source of errors, all the way to some error handling approach. Moreover, some hot research direction is summed up in this paper.
1 Introduction
Speech is the most natural way to communicate for human being. Spoken dialogue systems can make it possible for human to communicate with machines using speech. Spoken dialogue systems technology has made rapid growth in recent years, due to the advance in natural language processing techniques. This trend is also drove by economical interests. Spoken dialogue systems have a wide range of application including computer-based call center, interactive enquiry system, and other hands-free applications. Although the development of spoken dialogue systems has been impressive, some technical obstacles still obstruct spoken dialogue systems from reaching its full potential. One of the serious problems is how to deal with errors.
To design a robust spoken dialogue system is a challenging task. Though automatic speech recognition (ASR) has reached to a relative successful level, it's still imperfect and often blamed for the uncertainty in spoken dialogue systems. What's more, spoken dialogue systems can never make it for certain what user has said, the system merely makes decision based on values of some parameters, that is the second reason for uncertainty.
Miscommunication often happens in human-human dialogue, not to mention in a computer-human environment. Errors in spoken dialogue systems have become a bottleneck, which constrain the popularization of spoken dialogue systems technology...
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