Search Results for author: Chetan Singh Thakur

Found 25 papers, 1 papers with code

EventF2S: Asynchronous and Sparse Spiking AER Framework using Neuromorphic-Friendly Algorithm

no code implementations28 Jan 2024 Lakshmi Annamalai, Chetan Singh Thakur

Bio-inspired Address Event Representation (AER) sensors have attracted significant popularity owing to their low power consumption, high sparsity, and high temporal resolution.

Denoising Object Recognition

RAMAN: A Re-configurable and Sparse tinyML Accelerator for Inference on Edge

no code implementations10 Jun 2023 Adithya Krishna, Srikanth Rohit Nudurupati, Chandana D G, Pritesh Dwivedi, André van Schaik, Mahesh Mehendale, Chetan Singh Thakur

In this paper, we present RAMAN, a Re-configurable and spArse tinyML Accelerator for infereNce on edge, architected to exploit the sparsity to reduce area (storage), power as well as latency.

Neuromorphic Computing with AER using Time-to-Event-Margin Propagation

no code implementations27 Apr 2023 Madhuvanthi Srivatsav R, Shantanu Chakrabartty, Chetan Singh Thakur

Address-Event-Representation (AER) is a spike-routing protocol that allows the scaling of neuromorphic and spiking neural network (SNN) architectures to a size that is comparable to that of digital neural network architectures.

Multiplierless In-filter Computing for tinyML Platforms

no code implementations24 Apr 2023 Abhishek Ramdas Nair, Pallab Kumar Nath, Shantanu Chakrabartty, Chetan Singh Thakur

Wildlife conservation using continuous monitoring of environmental factors and biomedical classification, which generate a vast amount of sensor data, is a challenge due to limited bandwidth in the case of remote monitoring.

Classification

Theoretical Insight into Batch Normalization: Data Dependant Auto-Tuning of Regularization Rate

no code implementations15 Sep 2022 Lakshmi Annamalai, Chetan Singh Thakur

Batch normalization is widely used in deep learning to normalize intermediate activations.

Process, Bias and Temperature Scalable CMOS Analog Computing Circuits for Machine Learning

no code implementations11 May 2022 Pratik Kumar, Ankita Nandi, Shantanu Chakrabartty, Chetan Singh Thakur

Analog computing is attractive compared to digital computing due to its potential for achieving higher computational density and higher energy efficiency.

BIG-bench Machine Learning

Bias-Scalable Near-Memory CMOS Analog Processor for Machine Learning

no code implementations10 Feb 2022 Pratik Kumar, Ankita Nandi, Shantanu Chakrabartty, Chetan Singh Thakur

In this paper, we demonstrate the implementation of bias-scalable approximate analog computing circuits using the generalization of the margin-propagation principle called shape-based analog computing (S-AC).

In-filter Computing For Designing Ultra-light Acoustic Pattern Recognizers

no code implementations11 Sep 2021 Abhishek Ramdas Nair, Shantanu Chakrabartty, Chetan Singh Thakur

We present a novel in-filter computing framework that can be used for designing ultra-light acoustic classifiers for use in smart internet-of-things (IoTs).

Robust classification

Multiplierless MP-Kernel Machine For Energy-efficient Edge Devices

no code implementations3 Jun 2021 Abhishek Ramdas Nair, Pallab Kumar Nath, Shantanu Chakrabartty, Chetan Singh Thakur

We present a novel framework for designing multiplierless kernel machines that can be used on resource-constrained platforms like intelligent edge devices.

Event-LSTM: An Unsupervised and Asynchronous Learning-based Representation for Event-based Data

no code implementations10 May 2021 Lakshmi Annamalai, Vignesh Ramanathan, Chetan Singh Thakur

Compared to competing supervised approaches, ours is a task-agnostic approach ideally suited for the event domain, where task specific labeled data is scarce.

Activity Recognition Gesture Recognition

A Neuromorphic Proto-Object Based Dynamic Visual Saliency Model with an FPGA Implementation

no code implementations27 Feb 2020 Jamal Lottier Molin, Chetan Singh Thakur, Ralph Etienne-Cummings, Ernst Niebur

The ability to attend to salient regions of a visual scene is an innate and necessary preprocessing step for both biological and engineered systems performing high-level visual tasks (e. g. object detection, tracking, and classification).

Computational Efficiency object-detection +1

Real-Time Object Detection and Localization in Compressive Sensed Video on Embedded Hardware

no code implementations18 Dec 2019 Yeshwanth Ravi Theja Bethi, Sathyaprakash Narayanan, Venkat Rangan, Chetan Singh Thakur

Though cameras that perform compressive sensing save a lot of bandwidth at the time of sampling and minimize the memory required to store videos, we cannot do much in terms of processing until the videos are reconstructed to the original frames.

Compressive Sensing object-detection +2

EvAn: Neuromorphic Event-based Anomaly Detection

no code implementations21 Nov 2019 Lakshmi Annamalai, Anirban Chakraborty, Chetan Singh Thakur

Event-based cameras are bio-inspired novel sensors that asynchronously record changes in illumination in the form of events, thus resulting in significant advantages over conventional cameras in terms of low power utilization, high dynamic range, and no motion blur.

Anomaly Detection Generative Adversarial Network +1

Multiplierless and Sparse Machine Learning based on Margin Propagation Networks

no code implementations5 Oct 2019 Nazreen P. M., Shantanu Chakrabartty, Chetan Singh Thakur

This is because at the fundamental level, neural network and machine learning operations extensively use MVM operations and hardware compilers exploit the inherent parallelism in MVM operations to achieve hardware acceleration on GPUs and FPGAs.

BIG-bench Machine Learning Edge-computing

Large-Scale Neuromorphic Spiking Array Processors: A quest to mimic the brain

no code implementations23 May 2018 Chetan Singh Thakur, Jamal Molin, Gert Cauwenberghs, Giacomo Indiveri, Kundan Kumar, Ning Qiao, Johannes Schemmel, Runchun Wang, Elisabetta Chicca, Jennifer Olson Hasler, Jae-sun Seo, Shimeng Yu, Yu Cao, André van Schaik, Ralph Etienne-Cummings

Neuromorphic engineering (NE) encompasses a diverse range of approaches to information processing that are inspired by neurobiological systems, and this feature distinguishes neuromorphic systems from conventional computing systems.

An FPGA-based Massively Parallel Neuromorphic Cortex Simulator

no code implementations8 Mar 2018 Runchun Wang, Chetan Singh Thakur, Andre van Schaik

This paper presents a massively parallel and scalable neuromorphic cortex simulator designed for simulating large and structurally connected spiking neural networks, such as complex models of various areas of the cortex.

A Stochastic Approach to STDP

no code implementations13 Mar 2016 Runchun Wang, Chetan Singh Thakur, Tara Julia Hamilton, Jonathan Tapson, André van Schaik

The decay generator will then generate an exponential decay, which will be used by the STDP adaptor to perform the weight adaption.

8k

A compact aVLSI conductance-based silicon neuron

no code implementations3 Sep 2015 Runchun Wang, Chetan Singh Thakur, Tara Julia Hamilton, Jonathan Tapson, Andre van Schaik

We present an analogue Very Large Scale Integration (aVLSI) implementation that uses first-order lowpass filters to implement a conductance-based silicon neuron for high-speed neuromorphic systems.

A neuromorphic hardware architecture using the Neural Engineering Framework for pattern recognition

1 code implementation21 Jul 2015 Runchun Wang, Chetan Singh Thakur, Tara Julia Hamilton, Jonathan Tapson, Andre van Schaik

The architecture is not limited to handwriting recognition, but is generally applicable as an extremely fast pattern recognition processor for various kinds of patterns such as speech and images.

Handwriting Recognition Handwritten Digit Recognition

A Trainable Neuromorphic Integrated Circuit that Exploits Device Mismatch

no code implementations10 Jul 2015 Chetan Singh Thakur, Runchun Wang, Tara Julia Hamilton, Jonathan Tapson, Andre van Schaik

Additionally, we characterise each neuron and discuss the statistical variability of its tuning curve that arises due to random device mismatch, a desirable property for the learning capability of the TAB.

An Online Learning Algorithm for Neuromorphic Hardware Implementation

no code implementations11 May 2015 Chetan Singh Thakur, Runchun Wang, Saeed Afshar, Gregory Cohen, Tara Julia Hamilton, Jonathan Tapson, Andre van Schaik

We propose a sign-based online learning (SOL) algorithm for a neuromorphic hardware framework called Trainable Analogue Block (TAB).

regression

A neuromorphic hardware framework based on population coding

no code implementations2 Mar 2015 Chetan Singh Thakur, Tara Julia Hamilton, Runchun Wang, Jonathan Tapson, André van Schaik

These neuronal populations are characterised by a diverse distribution of tuning curves, ensuring that the entire range of input stimuli is encoded.

FPGA Implementation of the CAR Model of the Cochlea

no code implementations2 Mar 2015 Chetan Singh Thakur, Tara Julia Hamilton, Jonathan Tapson, Richard F. Lyon, André van Schaik

Here, we implement the Cascade of Asymmetric Resonators (CAR) model of the cochlea on an FPGA.

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