Search Results for author: Anup Das

Found 34 papers, 4 papers with code

A Coupled Neural Circuit Design for Guillain-Barre Syndrome

no code implementations27 Jun 2022 Oguzhan Derebasi, Murat Isik, Oguzhan Demirag, Dilek Goksel Duru, Anup Das

Thus, the resulting coupled analog hardware neuron model can be a proposed model for the simulation of reduced nerve conduction.

Multiscale Voxel Based Decoding For Enhanced Natural Image Reconstruction From Brain Activity

no code implementations27 May 2022 Mali Halac, Murat Isik, Hasan Ayaz, Anup Das

Reconstructing perceived images from human brain activity monitored by functional magnetic resonance imaging (fMRI) is hard, especially for natural images.

Generative Adversarial Network Image Reconstruction +3

Learning in Feedback-driven Recurrent Spiking Neural Networks using full-FORCE Training

1 code implementation26 May 2022 Ankita Paul, Stefan Wagner, Anup Das

However, the presence of a feedback loop from the readout to the recurrent layer de-stabilizes the learning mechanism and prevents it from converging.

A Design Methodology for Fault-Tolerant Computing using Astrocyte Neural Networks

no code implementations6 Apr 2022 Murat Işık, Ankita Paul, M. Lakshmi Varshika, Anup Das

We propose a design methodology to facilitate fault tolerance of deep learning models.

Design-Technology Co-Optimization for NVM-based Neuromorphic Processing Elements

no code implementations10 Mar 2022 Shihao Song, Adarsha Balaji, Anup Das, Nagarajan Kandasamy

First, on the technology front, we propose an optimization scheme where the NVM resistance state that takes the longest time to sense is set on current paths having the least delay, and vice versa, reducing the average PE latency, which improves the QoS.

BIG-bench Machine Learning

Energy-Efficient Respiratory Anomaly Detection in Premature Newborn Infants

no code implementations21 Feb 2022 Ankita Paul, Md. Abu Saleh Tajin, Anup Das, William M. Mongan, Kapil R. Dandekar

We propose a Deep Learning enabled wearable monitoring system for premature newborn infants, where respiratory cessation is predicted using signals that are collected wirelessly from a non-invasive wearable Bellypatch put on infant's body.

Anomaly Detection Model Selection +1

Implementing Spiking Neural Networks on Neuromorphic Architectures: A Review

no code implementations17 Feb 2022 Phu Khanh Huynh, M. Lakshmi Varshika, Ankita Paul, Murat Isik, Adarsha Balaji, Anup Das

Here, we provide a comprehensive overview of such frameworks proposed for both, platform-based design and hardware-software co-design.

BIG-bench Machine Learning

On the Mitigation of Read Disturbances in Neuromorphic Inference Hardware

no code implementations27 Jan 2022 Ankita Paul, Shihao Song, Twisha Titirsha, Anup Das

Our analysis show both a strong dependency on model characteristics such as synaptic activation and criticality, and on the voltage used to read resistance states during inference.

Design of Many-Core Big Little μBrain for Energy-Efficient Embedded Neuromorphic Computing

no code implementations23 Nov 2021 M. Lakshmi Varshika, Adarsha Balaji, Federico Corradi, Anup Das, Jan Stuijt, Francky Catthoor

We propose a system software framework called SentryOS to map SDCNN inference applications to the proposed design.

Design Technology Co-Optimization for Neuromorphic Computing

no code implementations15 Oct 2021 Ankita Paul, Shihao Song, Anup Das

We present a design-technology tradeoff analysis in implementing machine-learning inference on the processing cores of a Non-Volatile Memory (NVM)-based many-core neuromorphic hardware.

A Design Flow for Mapping Spiking Neural Networks to Many-Core Neuromorphic Hardware

no code implementations27 Aug 2021 Shihao Song, M. Lakshmi Varshika, Anup Das, Nagarajan Kandasamy

We propose an SDFG-based design flow for mapping spiking neural networks (SNNs) to many-core neuromorphic hardware with the objective of exploring the tradeoff between throughput and buffer size.

graph partitioning

Dynamic Reliability Management in Neuromorphic Computing

no code implementations5 May 2021 Shihao Song, Jui Hanamshet, Adarsha Balaji, Anup Das, Jeffrey L. Krichmar, Nikil D. Dutt, Nagarajan Kandasamy, Francky Catthoor

We propose a new architectural technique to mitigate the aging-related reliability problems in neuromorphic systems, by designing an intelligent run-time manager (NCRTM), which dynamically destresses neuron and synapse circuits in response to the short-term aging in their CMOS transistors during the execution of machine learning workloads, with the objective of meeting a reliability target.

BIG-bench Machine Learning Management +1

NeuroXplorer 1.0: An Extensible Framework for Architectural Exploration with Spiking Neural Networks

no code implementations4 May 2021 Adarsha Balaji, Shihao Song, Twisha Titirsha, Anup Das, Jeffrey Krichmar, Nikil Dutt, James Shackleford, Nagarajan Kandasamy, Francky Catthoor

Recently, both industry and academia have proposed many different neuromorphic architectures to execute applications that are designed with Spiking Neural Network (SNN).

On the Role of System Software in Energy Management of Neuromorphic Computing

no code implementations22 Mar 2021 Twisha Titirsha, Shihao Song, Adarsha Balaji, Anup Das

Based on such formulation, we first evaluate the role of a system software in managing the energy consumption of neuromorphic systems.

BIG-bench Machine Learning energy management +1

Endurance-Aware Mapping of Spiking Neural Networks to Neuromorphic Hardware

no code implementations9 Mar 2021 Twisha Titirsha, Shihao Song, Anup Das, Jeffrey Krichmar, Nikil Dutt, Nagarajan Kandasamy, Francky Catthoor

We propose eSpine, a novel technique to improve lifetime by incorporating the endurance variation within each crossbar in mapping machine learning workloads, ensuring that synapses with higher activation are always implemented on memristors with higher endurance, and vice versa.

graph partitioning

Motif Identification using CNN-based Pairwise Subsequence Alignment Score Prediction

no code implementations21 Jan 2021 Ethan Jacob Moyer, Anup Das

A common problem in bioinformatics is related to identifying gene regulatory regions marked by relatively high frequencies of motifs, or deoxyribonucleic acid sequences that often code for transcription and enhancer proteins.

Compiling Spiking Neural Networks to Mitigate Neuromorphic Hardware Constraints

no code implementations27 Nov 2020 Adarsha Balaji, Anup Das

Spiking Neural Networks (SNNs) are efficient computation models to perform spatio-temporal pattern recognition on {resource}- and {power}-constrained platforms.

Rolling Shutter Correction

Machine learning applications to DNA subsequence and restriction site analysis

no code implementations7 Nov 2020 Ethan J. Moyer, Anup Das

Following these preprocessing steps, three different pipelines are proposed to classify subsequences based on their nucleotide sequence and other relevant features corresponding to the restriction sites of over 200 endonucleases.

BIG-bench Machine Learning feature selection +1

Thermal-Aware Compilation of Spiking Neural Networks to Neuromorphic Hardware

no code implementations9 Oct 2020 Twisha Titirsha, Anup Das

Such current variations create a thermal gradient within each crossbar of the hardware, depending on the machine learning workload and the mapping of neurons and synapses of the workload to these crossbars.

BIG-bench Machine Learning Total Energy

Reliability-Performance Trade-offs in Neuromorphic Computing

no code implementations26 Sep 2020 Twisha Titirsha, Anup Das

A major source of voltage drop in a crossbar of these architectures are the parasitic components on the crossbar's bitlines and wordlines, which are deliberately made longer to achieve lower cost-per-bit.

BIG-bench Machine Learning

Enabling Resource-Aware Mapping of Spiking Neural Networks via Spatial Decomposition

no code implementations19 Sep 2020 Adarsha Balaji, Shihao Song, Anup Das, Jeffrey Krichmar, Nikil Dutt, James Shackleford, Nagarajan Kandasamy, Francky Catthoor

With growing model complexity, mapping Spiking Neural Network (SNN)-based applications to tile-based neuromorphic hardware is becoming increasingly challenging.

Rolling Shutter Correction

A Case for Lifetime Reliability-Aware Neuromorphic Computing

no code implementations4 Jul 2020 Shihao Song, Anup Das

Neuromorphic computing with non-volatile memory (NVM) can significantly improve performance and lower energy consumption of machine learning tasks implemented using spike-based computations and bio-inspired learning algorithms.

BIG-bench Machine Learning

Run-time Mapping of Spiking Neural Networks to Neuromorphic Hardware

no code implementations11 Jun 2020 Adarsha Balaji, Thibaut Marty, Anup Das, Francky Catthoor

In this paper, we propose a design methodology to partition and map the neurons and synapses of online learning SNN-based applications to neuromorphic architectures at {run-time}.

Improving Dependability of Neuromorphic Computing With Non-Volatile Memory

no code implementations10 Jun 2020 Shihao Song, Anup Das, Nagarajan Kandasamy

We evaluate RENEU using different machine learning applications on a state-of-the-art neuromorphic hardware with NVM synapses.

Compiling Spiking Neural Networks to Neuromorphic Hardware

1 code implementation7 Apr 2020 Shihao Song, Adarsha Balaji, Anup Das, Nagarajan Kandasamy, James Shackleford

First, we propose a greedy technique to partition an SNN into clusters of neurons and synapses such that each cluster can fit on to the resources of a crossbar.

PyCARL: A PyNN Interface for Hardware-Software Co-Simulation of Spiking Neural Network

1 code implementation21 Mar 2020 Adarsha Balaji, Prathyusha Adiraju, Hirak J. Kashyap, Anup Das, Jeffrey L. Krichmar, Nikil D. Dutt, Francky Catthoor

We also use PyCARL to analyze these SNNs for a state-of-the-art neuromorphic hardware and demonstrate a significant performance deviation from software-only simulations.

BIG-bench Machine Learning

A Framework to Explore Workload-Specific Performance and Lifetime Trade-offs in Neuromorphic Computing

no code implementations1 Nov 2019 Adarsha Balaji, Shihao Song, Anup Das, Nikil Dutt, Jeff Krichmar, Nagarajan Kandasamy, Francky Catthoor

Our framework first extracts the precise times at which a charge pump in the hardware is activated to support neural computations within a workload.

BIG-bench Machine Learning

Mapping Spiking Neural Networks to Neuromorphic Hardware

no code implementations4 Sep 2019 Adarsha Balaji, Anup Das, Yuefeng Wu, Khanh Huynh, Francesco Dell'Anna, Giacomo Indiveri, Jeffrey L. Krichmar, Nikil Dutt, Siebren Schaafsma, Francky Catthoor

SpiNePlacer then finds the best placement of local and global synapses on the hardware using a meta-heuristic-based approach to minimize energy consumption and spike latency.

Clustering

Mapping of Local and Global Synapses on Spiking Neuromorphic Hardware

no code implementations13 Aug 2019 Anup Das, Yuefeng Wu, Khanh Huynh, Francesco Dell'Anna, Francky Catthoor, Siebren Schaafsma

Partitioning SNNs becomes essential in order to map them on neuromorphic hardware with the major aim to reduce the global communication latency and energy overhead.

Image Classification

Unsupervised Heart-rate Estimation in Wearables With Liquid States and A Probabilistic Readout

no code implementations18 Jul 2017 Anup Das, Paruthi Pradhapan, Willemijn Groenendaal, Prathyusha Adiraju, Raj Thilak Rajan, Francky Catthoor, Siebren Schaafsma, Jeffrey L. Krichmar, Nikil Dutt, Chris Van Hoof

The novelty of our approach lies in (1) encoding spatio-temporal properties of ECG signals directly into spike train and using this to excite recurrently connected spiking neurons in a Liquid State Machine computation model; (2) a novel learning algorithm; and (3) an intelligently designed unsupervised readout based on Fuzzy c-Means clustering of spike responses from a subset of neurons (Liquid states), selected using particle swarm optimization.

Clustering Heart rate estimation

Differential Covariance: A New Class of Methods to Estimate Sparse Connectivity from Neural Recordings

1 code implementation8 Jun 2017 Tiger W. Lin, Anup Das, Giri P. Krishnan, Maxim Bazhenov, Terrence J. Sejnowski

In all of our simulated data, the differential covariance-based methods achieved better or similar performance to the GLM method and required fewer data samples.

Connectivity Estimation

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