Neural Pattern Recognition on Multichannel Input Representation

This article presents a new neural pattern recognition architecture on multichannel data representation. The architecture emploies generalized ART modules as building blocks to construct a supervised learning system generating recognition codes on channels dynamically selected in context using serial and parallel match trackings led by inter-ART vigilance signals.Sharp Corporation, Information Techology Research Laboratories, Nara, Japa

Neural Pattern Recognition With Multi-Scale Pyramidal Coding and Selective Attention

A new neural network architecture for spatial patttern recognition using multi-scale pyramida1 coding is here described. The network has an ARTMAP structure with a new class of ART-module, called Hybrid ART-module, as its front-end processor. Hybrid ART-module, which has processing modules corresponding to each scale channel of multi-scale pyramid, employs channels of finer scales only if it is necesssary to discriminate a pattern from others. This process is effected by serial match tracking. Also the parallel match tracking is used to select the spatial location having most salient feature and limit its attention to that part.Sharp Corporatio

Comparative Performance Measures of Fuzzy ARTMAP, Learned Vector Quantization, and Back Propagation for Handwritten Character Recognition

This article compares the performance of Fuzzy ARTMAP with that of Learned Vector Quantization and Back Propagation on a handwritten character recognition task. Training with Fuzzy ARTMAP to a fixed criterion used many fewer epochs. Voting with Fuzzy ARTMAP yielded the highest recognition rates.British Petroleum (89-A-1204); Defense Advanced Research Projects Agency (90-0083); National Science Foundation (IRI 90-00530); Office of Naval Research (N00014-91-J-4100); Air Force Office of Scientific Research (90-0175); Sharp Corporation, Information System Research & Development Center, Nara, Japa

Lack of effect of bone marrow transplantation on airway hyperresponsiveness in an asthmatic

ABSTRACTBronchial asthma has been recognized as an inflammatory disorder in this past decade. This leads to an assumption that perfect control of inflammatory cells may cure this disease. However, herein we report on an asthmatic whose airway hyperresponsiveness (AHR) did not change after bone marrow transplantation (BMT). The concentrations of acetylcholine to produce a 20% fall in forced expiratory volume in 1 s 15 days before and 98 days after BMT were 900 and 480 μg/mL, respectively. Asthma treatment with beclo-methasone dipropionate and theophylline was continued before and after BMT and a conventional supporting therapy for BMT with cyclosporine A and methylprednisolone, followed by oral administration of tacrolimus hydrate alone inhibited graft-versus-host disease. Plasma interleukin (IL)-4, IL-5 and IgE, but not interferon-γ, levels decreased after BMT. Note that the second measurement of airway sensitivity was performed under systemic administration of tacrolimus. The presented case suggests that replacement of bone marrow-derived inflammatory cells is not enough to reverse once-established AHR. Hence, AHR and airway inflammation may develop independently in some part, but both need to be present for asthma to be present in this asthmatic