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Using Convolutional Neural Networks for Image Recognition
Using Convolutional Neural Networks for Image Recognition

... CNNs are used in variety of areas, including image and pattern recognition, speech recognition, natural language processing, and video analysis. There are a number of reasons that convolutional neural networks are becoming important. In traditional models for pattern recognition, feature extractors ...
Neural Cell Assemblies for Practical
Neural Cell Assemblies for Practical

... will be active together, leading to a mutual increase in synaptic strength between neurons in the as yet unformed CA. The strength based on correlation is too small. As the neurons are not used in many other CAs, the total synaptic strength of the neurons is small. Thus, compensatory learning will i ...
Modeling the Visual Word Form Area Using a Deep Convolutional
Modeling the Visual Word Form Area Using a Deep Convolutional

... parameter will distribute the probability evenly, such that for T → ∞, all words will have probability 1/n. On the other hand, a low temperature will distribute the probability to only the highest value. We chose a temperature of T = 4, which creates a smoother probability distribution, such that th ...
11. Pankaj Gupta and V.H. Allan, The Acyclic Bayesian Net
11. Pankaj Gupta and V.H. Allan, The Acyclic Bayesian Net

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Introduction

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ACL/IJCNLP 2009 Invited Talk
ACL/IJCNLP 2009 Invited Talk

Modeling large cortical networks with growing self
Modeling large cortical networks with growing self

... local anatomical receptive field (RF) on the simulated retina. Neighboring neurons have different but highly overlapping RFs. Each neuron computes an initial response as a scalar (dot) product of its receptive field and its afferent weight vector, i.e. a sum of the product of each weight with its as ...
CS 561a: Introduction to Artificial Intelligence
CS 561a: Introduction to Artificial Intelligence

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PDF

... neural networks (ANN), support vector machines (SVM), hidden markov models, multiagents and expert systems, are some examples. Unlike statistical techniques, they are capable of obtaining adequate models for nonlinear and unstructured data. Neural networks are the most widely used method for this t ...
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P - Computing Science - Thompson Rivers University

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PPT
PPT

... • Symbolic AI is well-suited for representing explicit knowledge that can be appropriately formalized. • However, learning in biological systems is mostly implicit – it is an adaptation process based on uncertain information and reasoning. • ANNs are inherently parallel and work extremely efficientl ...
Practical Applications of Biological Realism in Artificial Neural
Practical Applications of Biological Realism in Artificial Neural

... Over the last few decades, developments in structure and function have made artificial neural networks (ANNs) state-of-the-art for many machine learning applications, such as self-driving cars, image and facial recognition, speech recognition etc. Some developments (such as error backpropagation) ha ...
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ppt

... (two thirds of the examples) and “test set” (remaining one third) • Train PSIPRED on training set, test predictions and compare with known answers on test set. • What is an answer? – For each position of sequence, a prediction of what secondary structure that position is involved in – That is, a seq ...
Survey on Neuro-Fuzzy Systems and their Applications in Technical
Survey on Neuro-Fuzzy Systems and their Applications in Technical

... evolved and improved throughout the years to adapt arising needs and technological advancements. As ANNs and Fuzzy Systems had been often applied together the concept of a fusion between them started to take shape. Neuro-Fuzzy Systems were born which utilize the advantages of both techniques: they h ...
`Learning`?
`Learning`?

... Is it a change in behaviour or undrstanding? Definitions of learning Learning is usually defined as a relatively permanent change in behaviour or behaviour potential that occurs through experience. However, it does not refer to behavioural changes that can be explained by temporary states of maturat ...
Artificial Neural Networks—Modern Systems for Safety Control
Artificial Neural Networks—Modern Systems for Safety Control

... corresponding to input data {Xm}. After the process of training, the network can realize the nonlinear mapping f of input data to output data as shown in Figure 1, but the explicit form of f is not known. Moreover, a properly trained ANN is able to find correct outputs also for input signal Xk, whic ...
Representation of Number in Animals and Humans: A Neural Model
Representation of Number in Animals and Humans: A Neural Model

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What is a Neural Network?

... Upper Saddle River, New Jersey 07458 All rights reserved. ...
Recognition by Variance: Learning Rules for Spatiotemporal Patterns
Recognition by Variance: Learning Rules for Spatiotemporal Patterns

... build a model that recognizes a learned pattern as a familiar one by producing a larger output when presented with it, compared to when presented with a typical background pattern. The model therefore reduces the high dimensional input to a one dimensional output. We emphasize that in the task that ...
Connecting Conscious and Unconscious - Axel Cleeremans
Connecting Conscious and Unconscious - Axel Cleeremans

... whereby people are shown to be able to learn about novel information without intention to do so and without awareness of the underlying regularities. Broadbent’s ingenious experiments propelled the field in hitherto unexplored directions and proved a seminal source of inspiration for my own work. Th ...
Spatio-temporal Pattern Recognition with Neural Networks
Spatio-temporal Pattern Recognition with Neural Networks

... 2.2 Where is the Recognition Performed? Another reason is that the perceptive system does not process speech as pattern recognition systems usually do. To a certain extent, it is true that the cochlear nucleus, the superior olivary complex and the colliculus, for example, are apparently specialised ...
Learning and Predicting Dynamic Network Behavior with Graphical
Learning and Predicting Dynamic Network Behavior with Graphical

LeCun - NYU Computer Science
LeCun - NYU Computer Science

... Region Cov. Etc. ...


... the behavioral nature of the human brain; the NN is more generic in nature, which tends to pattern the biological NN directly. The GAs as well as the evolutionary computation techniques is based on principles of genetics. Basically, these GA methods solve optimization problems by a search process re ...
INSTANTANEOUSLY TRAINED NEURAL NETWORKS WITH
INSTANTANEOUSLY TRAINED NEURAL NETWORKS WITH

< 1 ... 34 35 36 37 38 39 40 41 42 ... 77 >

Catastrophic interference



Catastrophic Interference, also known as catastrophic forgetting, is the tendency of a artificial neural network to completely and abruptly forget previously learned information upon learning new information. Neural networks are an important part of the network approach and connectionist approach to cognitive science. These networks use computer simulations to try and model human behaviours, such as memory and learning. Catastrophic interference is an important issue to consider when creating connectionist models of memory. It was originally brought to the attention of the scientific community by research from McCloskey and Cohen (1989), and Ractcliff (1990). It is a radical manifestation of the ‘sensitivity-stability’ dilemma or the ‘stability-plasticity’ dilemma. Specifically, these problems refer to the issue of being able to make an artificial neural network that is sensitive to, but not disrupted by, new information. Lookup tables and connectionist networks lie on the opposite sides of the stability plasticity spectrum. The former remains completely stable in the presence of new information but lacks the ability to generalize, i.e. infer general principles, from new inputs. On the other hand, connectionst networks like the standard backpropagation network are very sensitive to new information and can generalize on new inputs. Backpropagation models can be considered good models of human memory insofar as they mirror the human ability to generalize but these networks often exhibit less stability than human memory. Notably, these backpropagation networks are susceptible to catastrophic interference. This is considered an issue when attempting to model human memory because, unlike these networks, humans typically do not show catastrophic forgetting. Thus, the issue of catastrophic interference must be eradicated from these backpropagation models in order to enhance the plausibility as models of human memory.
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