A Causal rate distortion function with a general fidelity criterion is formulated on abstract alphabets and the optimal reconstruction kernel is derived, which consists of a product of causal kernels. In the process, general abstract spaces are introduced to show existence of the minimizing kernel using weak∗-convergence. Certain properties of the causal rate distortion function are presented.

In modern industrial plants, process units are strongly cross-linked with each other, and disturbances occurring in one unit potentially become plant-wide. This can lead to a flood of alarms at the supervisory control and data acquisition system, hiding the original fault causing the disturbance. Hence, one major aim in fault diagnosis is to backtrack the disturbance propagation path of the dis...

Several works IMcKeowu 86, Suthers 88] have emphasized the common aspects of Explanation Production in expert systems and Text Generation. The work described in this paper deals with text generation applied to a particular type of explanations: causal explanations of physical systems. They have akeady motivated influential developments in the field of qualitative reasoning about physical system...

A rcccnt trend in cxpcrt systems rcscarch has been toward systems which reason from descriptions of causnl processes in the domain, rather than from the surface cffccts. ‘I’his is the “causal model” versus “cinpirical association” distinction prcscntcd in [2]. Typically, this involves creating a dctailcd model of the physical proccsscs which undcrly the domain. ‘I’his model must support infcrcn...

Telemedicine, enabled by state-of-art information technology, is rapidly gaining awareness in many countries. Despite the advanced telecommunication infrastructure, the introduction of telemedicine in Hong Kong has been slow. Hong Kong’s monopolistic health care system provides an answer for the protracted development of telemedicine in the region. This study attempts to reach a theoretical und...

Nonmonotonic causal logic is a knowledge representation language designed for describing domains that involve actions and change. The process of literal completion, similar to program completion familiar from the theory of logic programming, can be used to translate some nonmonotonic causal theories into classical logic. Its applicability is restricted, however, to theories that deal with truth...

Commercially successful video games easily sell more than one million units in the US market alone and gross more than $ 100 million. Few research approaches have asked the question what makes a video game succeed in the market. This paper focuses on the role of external information sources. As video games are experience goods whose value for the consumer only becomes apparent after he or she h...

This paper presents a novel causal semantics for concurrency, based on rigid families. Instead of having causality as primitive notion, in our model causality and concurrency are derived from precedence, a partial order local to each run of a process. We show that our causal semantics can interpret CCS and π-calculus terms. We propose some criteria to evaluate the correctness of a causal semant...