This paper presents a new approach based on a Two-Stage Linear Discriminant Analysis (Two-Stage LDA) and Conjugate Gradient Algorithms (CGAs) for face recognition. A Two-Stage LDA technique is proposed that utilises the null space of the sample covariance matrix as well as using the range space of the between-class scatter matrix to extract discriminant information. Classic Back Propagation (BP...

This paper reports work done to improve the modeling of complex processes when only small experimental data sets are available. Neural networks are used to capture the nonlinear underlying phenomena contained in the data set and to partly eliminate the burden of having to specify completely the structure of the model. Two different types of neural networks were used for the application of pulpi...

The absolute value of the Möbius function of a bounded poset P with n + 2 elements satisfies |μ(P )| ≤ max r≥0 max p1+...+pr=n pi≥1 r ∏

The original back-propagation methods were plagued with variable parameters which affected both the convergence properties of the training and the generalisation abilities of the resulting network. These parameters presented many difficulties when attempting to use these networks to solve particular mapping problems. A combination of established numerical minimisation methods (Polak-Ribiere Con...

Using the Maximum Entropy principle, we find probability distribution of torsion angles in proteins. We estimate parameters of this distribution numerically, by implementing the conjugate gradient method in Polak-Ribiere variant [6]. We investigate practical approximations of the theoretical distribution. We discuss the information content of these approximations and compare them with standard ...

martin powell makes the point that the death of the national health service (nhs) is constantly asserted without criteria. this article suggests that the nhs is many things, which makes criteria unstable. the alignment of interests in the structure of the nhs enables both overheated rhetoric and political strength, and that pluralization of provision might actually undermine that alignment over...

Article history: Received 20 February 2013 Received in revised form 5 August 2013 Accepted 16 September 2013 Available online 21 September 2013 This manuscript was handled by Andras Bardossy, Editor-in-Chief, with the assistance of Purna Chandra Nayak, Associate Editor

Comments Welcome 1 We are grateful to David Laitin, who collaborated with Kanchan Chandra on early versions of this chapter and has contributed to many of the insights here; to

Background: Matrix MetalloProteinases (MMPs) degrade extracellular matrix components to provide normal remodeling and contribute to pathological tissue destruction and cell migration in endometriosis. It is accepted that MMPs are resistant to suppression by progesterone in endometriotic tissues. The physiological effects of progesterone are mediated by its two progesterone receptor (PR) isoform...