Most supervised neural networks are trained by minimizing the mean squared error of the training set. But there are problems of using mean squared error especially whenever the target output is equal to the actual out...
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Most supervised neural networks are trained by minimizing the mean squared error of the training set. But there are problems of using mean squared error especially whenever the target output is equal to the actual output in which the error signal tends to zero. This will lead to the instability of the internal structure of the network as well. In this paper, we discuss an improved convergence rates of standard backpropagation model with some modifications in its learning strategies. A modified backpropagation model is experimented on XOR problem, data of profitability analysis and Kuala Lumpur Composite Index (KLCI) at Kuala Lumpur Stock Exchange (KLSE) and handwritten/handprinted digits. The results are compared with standard backpropagation model which is based on mean square errors.
This research defines a new format called extended tyft/tyxt format. This format is able to express process algebras with structured or non-atomic labels and their bisimulation-based semantic equivalences. A general n...
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An ongoing project of the Highly Dependable Systems Research programme (PHDS) at the University of the Witwatersrand is the development of a dependable distributed system and its application in supporting Internet ser...
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An ongoing project of the Highly Dependable Systems Research programme (PHDS) at the University of the Witwatersrand is the development of a dependable distributed system and its application in supporting Internet ser...
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An ongoing project of the Highly Dependable Systems Research programme (PHDS) at the University of the Witwatersrand is the development of a dependable distributed system and its application in supporting Internet services. The current research related to this project includes the design, specification, verification and implementation of a virtual service redirector for critical internet applications. This paper summarises this system and related projects.
The creative industries are increasingly seen as important to countries' economies. There is a question, however, about how these should be nurtured and supported. The Panel will address these questions and look a...
ISBN:
(纸本)1581130783
The creative industries are increasingly seen as important to countries' economies. There is a question, however, about how these should be nurtured and supported. The Panel will address these questions and look at the role of governments and the research communities.
A group of 102 preschool children aged 13-69 months from a rural area of Lebowa were selected from a cross-sectional study of 659 children for an intervention trial (12 months) to study the effect of catfish (Clorias ...
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A group of 102 preschool children aged 13-69 months from a rural area of Lebowa were selected from a cross-sectional study of 659 children for an intervention trial (12 months) to study the effect of catfish (Clorias gariepinus) supplementation on their plasma phospholipid fatty acid status and growth. They were classified into undernourished and control groups according to their weight-for-age. The undernourished children (n = 52) received 43 g fish and 7.5 g sunflower cooking oil per day, whereas a matched (age and sex) well-nourished control group (n = 50) was not supplemented. At baseline, after 6 months and after 12 months of the study, anthropometry, haematology, blood biochemistry and plasma phospholipid fatty acid analyses were done. In the undernourished group, high baseline oleic acid (18:1ω9) levels in plasma phosphatidylcholine (PC) were replaced by docosahexaenoic acid (22:6ω3) with supplementation. In plasma PC, this reduction in 18:1ω9 and increase in 22:6ω3 was associated with significant increases in weight-for-age Z-scores, P = 0.0378 and P = 0.0415, respectively. The fish supplement and cooking oil that supplied additional 7% energy (7% E) and nutrients promoted growth of undernourished children, although this was inadequate for sustained growth during the second 6 months of intervention.
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