For spoken dialogue systems, errors can occur on different levels of the system’s architecture. One of the principal causes for errors during a dialogue session are erroneous recognition results which often lead to incorrect semantic interpretations. Even if the speech input signal has been correctly recognized, a natural language understanding component can produce errorprone sentence meanings...

This paper describes new methods for errors handling at the decoder side, when channel noise affects the transmission of the compressed stream. The proposed error detection techniques are applied to MPEG-4 standard video, but can be also used for general video and still picture standards in which Inverse Quantization clipping or resynchronization markers are present as MPEG-2, H263, H26L, JPEG ...

In this work, we present an approach to take advantage of confidence measures obtained during the recognition and understanding processes of a dialog system, in order to guide the behavior of the dialog manager. Our approach allows the system to ask the user for confirmation about the data which have low confidence values associated to them, after the recognition or understanding processes. Thi...

This work-in-progress paper presents our work with a domain specific language (DSL) for tackling the issue of programming robots for small-sized batch production. We observe that as the complexity of assembly increases so does the likelihood of errors, and these errors need to be addressed. Nevertheless, it is essential that programming and setting up the assembly remains fast, allows quick cha...

The specification of abstract data types requires the possibility to treat exceptions and errors. We present an approach allowing all forms of error handling : error introduction, error propagation and error recovery. The algebraic semantics Of our method and a new correctness criterion is given. We also introduce an operational semantics of a subclass of our specifications which coincides with...

Many utility functions in a functional programming language consist of just a few lines of code. They are written with the expectation that they will be inlined and heavily optimized. For many of these functions, the size of the function being inlined is dominated by the size of code required to signal an error if the inputs are inconsistent. In this paper we describe bottom extraction, a simpl...

From this chapter’s perspective, pervasive computing is a new class of multimodal systems, which employs passive types of interaction modalities, based on perception, context, environment and ambience (Abowd & Mynatt, 2000; Feki, 2004; Oikonomopoulos et al., 2006). By contrast, early multimodal systems were mostly based on the recognition of active modes of interaction, for example speech, hand...

In this study, the user experience and the consequences of different error handling strategies for spoken dialogue are examined. A modification of the Wizard of Oz method is used, where a speech recogniser is included in the setting. This makes it possible to study how humans handle speech recognition errors before a dialogue system is actually built. The results show that wizards tend not to s...

Run-time errors are unavoidable whenever software interacts with the physical world. Unchecked errors are especially pernicious in operating system file management code. Transient or permanent hardware failures are inevitable, and errormanagement bugs at the file system layer can cause silent, unrecoverable data corruption. Furthermore, even when developers have the best of intentions, inaccura...

We describe the error handling architecture underlying the RavenClaw dialog management framework. The architecture provides a robust basis for current and future research in error detection and recovery. Several objectives were pursued in its development: task-independence, ease-ofuse, adaptability and scalability. We describe the key aspects of architectural design which confer these propertie...