Finding an optimal elimination ordering is a NP-hard problem of crucial importance for the efficiency of the Influence Diagrams evaluation. Some of the traditional methods for determining the elimination ordering use heuristics that consider that potentials are represented as tables. However, if potentials are represented using binary trees traditional methods may not offer the best results. In...

The generalized fault diagram, a data structure for failure analysis based on the influence diagram, is defined. Unlike the fault tree, this structure allows for dependence among the basic events and replicated logical elements. A heuristic procedure is developed for efficient processing of these structures.

This paper presents a novel approach to analyse design project development demonstrated within a collaborative design case study. We present the limitations of the existing protocol-based design process analysis in analysing real design scenarios. Taking a complete set of regular meeting notes from a design project, the study translated the record of design discussions and decisions into a deci...

Novel systems allocating teams of humans and unmanned heterogeneous vehicles are necessary for future applications. An intelligent framework is presented that reasons over a library of coalition formation algorithms to select the most appropriate algorithm(s) to apply to complex missions. The framework is based on decision networks to handle uncertainties in dynamic environments. A group of fea...

In this paper, we introduce evidence propagation operations on influence diagrams and a concept of value of evidence, which measures the value of experimentation. Evidence propagation operations are critical for the computation of the value of evidence, general update and inference operations in normative expert systems which are based on the influence diagram (generalized Bayesian network) par...

Expressing spatial information with iconic gestures is abundant in human communication and requires to transform a referent representation into resembling gestural form. This task is challenging as the mapping is determined by the visuo-spatial features of the referent, the overall discourse context as well as concomitant speech, and its outcome varies considerably across different speakers. We...

English intonation can be difficult for L2 speakers to learn, particularly for those whose L1 intonation system works differently from English. This study investigates whether Hong Kong English (HKE) speakers whose L1 is Cantonese have knowledge of the appropriate English intonation patterns in specific contexts. Results from an intonation pattern selection tasks indicate that HKE speakers (n =...