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Yingfang Zheng - IEEE Xplore Author Profile

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In this paper, we propose a system for file classification in large data sets based on spiking neural networks (SNNs). File information contained in key-value metadata pairs is mapped by a novel correlative temporal encoding scheme to spike patterns that are input to an SNN. The correlation between input spike patterns is determined by a file similarity measure. Unsupervised training of such netwo...Show More
The capabilities of artificial neural networks (ANNs) are limited by the operations possible at their individual neurons and synapses. For instance, each neuron's activation only represents a single scalar variable. In addition, because neuronal activations may be dominated by a single timescale in the synaptic input, unsupervised learning from data with multiple timescales has not been generally ...Show More
Neural networks (NNs) have been able to provide record-breaking performance in several machine-learning tasks, such as image and speech recognition, natural-language processing, playing complex games, and data analytics for scientific or business purposes [1]. They process their inputs through a series of linear and nonlinear operations and use learning algorithms, i.e., rules that optimize the pa...Show More
The ability to learn re-occurring patterns in real-time sensory inputs in an unsupervised way is a key feature of neural networks that can enable them to carry out complex tasks directly, or to simplify the learning process of subsequent layers in powerful deep network configurations. Dedicated neuromorphic computing electronic systems can implement low-power real-time neural network inference eng...Show More
Artificial neural networks (ANN) have revolutionized the field of machine learning by providing impressive human-like performance in solving real-world tasks in computer vision, speech recognition, or complex strategic games. There is a significant interest in developing non-von Neumann coprocessors for the training of ANNs, where resistive memory devices serve as synaptic elements. However, inter...Show More
Artificial neural networks (ANN) have become a powerful tool for machine learning. Resistive memory devices can be used for the realization of a non-von Neumann computational platform for ANN training in an area-efficient way. For instance, the conductance values of phase-change memory (PCM) devices can be used to represent synaptic weights and can be updated in-situ according to learning rules. H...Show More
Spiking neural networks (SNNs) could play a key role in unsupervised machine learning applications, by virtue of strengths related to learning from the fine temporal structure of event-based signals. However, some spike-timing-related strengths of SNNs are hindered by the sensitivity of spike-timing-dependent plasticity (STDP) rules to input spike rates, as fine temporal correlations may be obstru...Show More