A dynamical model of phonetic detail is presented. The model is compared to an exemplar-based model, which has been shown to offer an account of (presumed) frequency-dependent lenition processes. The dynamical model accounts for the same lenition patterns. However, there is a key difference. In contrast to the exemplar model, the dynamical model provides a handle on the timecourse of assembling...

Exploiting the analogy between exemplar models and population coding schemes, we characterize, by means of information theoretic tools, the efficiency of a large but finite population of cells coding for a discrete set of categories (e.g. vowels). The optimal code is shown to typically allocate more cells to class boundaries than to regions further apart. We then discuss the predicted perceptua...

This paper presents the results of a pitch accent categorisation simulation which attempts to classify L*H and H*L accents using a psychologically motivated exemplar-theoretic model of categorisation. Pitch accents are represented in terms of six linguistically meaningful parameters describing their shape. No additional information is employed in the categorisation process. The results indicate...

We present a connectionist model of concept learning that integrates prototype and exemplar effects and reconciles apparently conflicting findings on the development of these effects. Using sibling-descendant cascade-correlation networks, we found that prototype effects were more prominent at the beginning of training and decreased with further training. In contrast, exemplar effects steadily i...

This paper reports a survey and case study research outcomes on the application of Data Envelopment Analysis (DEA) to the ranking method of European Foundation for Quality Management (EFQM) Business Excellence Model in Iran’s Automotive Industry and improving benchmarking process after assessment. Following the global trend, the Iranian industry leaders have introduced the EFQM practice to thei...