activity
20222026
most citedWearable-based Human Activity Recognition with Spatio-Temporal Spiking Neural Networks

7 citations · 10 across the 20 of their papers we have counts for

collaborators

21 papers

cs.AR2026

Celty: SpMSpV GPU Kernel and SIMT Co-Design for Efficient Dual-Sparse LLM Inference

Ruokai Yin, Priyadarshini Panda

Large Language Models (LLMs) increasingly rely on sparsity to cut inference cost, but most prior work exploits a single sparsity source and targets batched multi-user inference. Du…

cs.LG2026

KronQ: LLM Quantization via Kronecker-Factored Hessian

Donghyun Lee, Yuhang Li, Ruokai Yin +1

Post-training quantization (PTQ) is a widely adopted technique for compressing large language models (LLMs) without retraining. Most existing second-order PTQ methods, including GP…

cs.AR2026

BRIM: Workload-Balanced Dual-Sided Bit-Serial Sparse Inference Accelerator

Varun Manjunath, Ruokai Yin, Donghyun Lee +2

Bit-serial accelerators exploit bit-level sparsity to reduce DNN inference cost, but existing designs exploit sparsity on only one operand, bounding the speedup. Extending sparsity…

cs.LG2026

Optimal Brain Decomposition for Accurate LLM Low-Rank Approximation

Yuhang Li, Donghyun Lee, Ruokai Yin +1

Low-rank decomposition has emerged as an important problem in Large Language Model (LLM) fine-tuning and inference. Through Singular Value Decomposition (SVD), the weight matrix ca…

cs.NE2026

MD-SNN: Membrane Potential-aware Distillation on Quantized Spiking Neural Network

Donghyun Lee, Abhishek Moitra, Youngeun Kim +2

Spiking Neural Networks (SNNs) offer a promising and energy-efficient alternative to conventional neural networks, thanks to their sparse binary activation. However, they face chal…

cs.LG2025

Learning to Shard: RL for Co-optimizing the Parallelism Degrees and Per-operator Sharding Dimensions in Distributed LLM Inference

Ruokai Yin, Sattwik Deb Mishra, Xuan Zuo +3

Distributed LLM inference requires careful coordination of parallelization strategies across hundreds to thousands of NPUs to meet production SLOs. Current systems like Megatron-LM…

cs.AR2025

DiffAxE: Diffusion-driven Hardware Accelerator Generation and Design Space Exploration

Arkapravo Ghosh, Abhishek Moitra, Abhiroop Bhattacharjee +2

Design space exploration (DSE) is critical for developing optimized hardware architectures, especially for AI workloads such as deep neural networks (DNNs) and large language model…

cs.LG2025

DuoGPT: Training-free Dual Sparsity through Activation-aware Pruning in LLMs

Ruokai Yin, Yuhang Li, Donghyun Lee +1

Large language models (LLMs) deliver strong performance but are difficult to deploy due to high memory and compute costs. While pruning reduces these demands, most methods ignore a…

cs.LG2025

Memba: Membrane-driven Parameter-Efficient Fine-Tuning for Mamba

Donghyun Lee, Yuhang Li, Ruokai Yin +2

State Space Models (SSMs) have emerged as powerful alternatives to attention-based Transformers, with Mamba demonstrating impressive efficiency and scalability. As these models gro…

cs.LG2025

GPTAQ: Efficient Finetuning-Free Quantization for Asymmetric Calibration

Yuhang Li, Ruokai Yin, Donghyun Lee +2

We introduce GPTAQ, a novel finetuning-free quantization method for compressing large-scale transformer architectures. Unlike the previous GPTQ method, which independently calibrat…

cs.AR2025

PacQ: A SIMT Microarchitecture for Efficient Dataflow in Hyper-asymmetric GEMMs

Ruokai Yin, Yuhang Li, Priyadarshini Panda

Weight-only quantization has been widely explored in large language models (LLMs) to reduce memory storage and data loading overhead. During deployment on single-instruction-multip…

cs.AR2024

LoAS: Fully Temporal-Parallel Dataflow for Dual-Sparse Spiking Neural Networks

Ruokai Yin, Youngeun Kim, Di Wu +1

Spiking Neural Networks (SNNs) have gained significant research attention in the last decade due to their potential to drive resource-constrained edge devices. Though existing SNN…

cs.NE2024

TT-SNN: Tensor Train Decomposition for Efficient Spiking Neural Network Training

Donghyun Lee, Ruokai Yin, Youngeun Kim +3

Spiking Neural Networks (SNNs) have gained significant attention as a potentially energy-efficient alternative for standard neural networks with their sparse binary activation. How…

eess.SP2023

Rethinking Skip Connections in Spiking Neural Networks with Time-To-First-Spike Coding

Youngeun Kim, Adar Kahana, Ruokai Yin +4

Time-To-First-Spike (TTFS) coding in Spiking Neural Networks (SNNs) offers significant advantages in terms of energy efficiency, closely mimicking the behavior of biological neuron…

cs.NE2023

Are SNNs Truly Energy-efficient? A Hardware Perspective

Abhiroop Bhattacharjee, Ruokai Yin, Abhishek Moitra +1

Spiking Neural Networks (SNNs) have gained attention for their energy-efficient machine learning capabilities, utilizing bio-inspired activation functions and sparse binary spike-d…

cs.NE2023

Sharing Leaky-Integrate-and-Fire Neurons for Memory-Efficient Spiking Neural Networks

Youngeun Kim, Yuhang Li, Abhishek Moitra +2

Spiking Neural Networks (SNNs) have gained increasing attention as energy-efficient neural networks owing to their binary and asynchronous computation. However, their non-linear ac…

cs.NE2023

MINT: Multiplier-less INTeger Quantization for Energy Efficient Spiking Neural Networks

Ruokai Yin, Yuhang Li, Abhishek Moitra +1

We propose Multiplier-less INTeger (MINT) quantization, a uniform quantization scheme that efficiently compresses weights and membrane potentials in spiking neural networks (SNNs).…

cs.NE2023

Workload-Balanced Pruning for Sparse Spiking Neural Networks

Ruokai Yin, Youngeun Kim, Yuhang Li +4

Pruning for Spiking Neural Networks (SNNs) has emerged as a fundamental methodology for deploying deep SNNs on resource-constrained edge devices. Though the existing pruning method…

cs.NE2022★ 7 cited

Wearable-based Human Activity Recognition with Spatio-Temporal Spiking Neural Networks

Yuhang Li, Ruokai Yin, Hyoungseob Park +2

We study the Human Activity Recognition (HAR) task, which predicts user daily activity based on time series data from wearable sensors. Recently, researchers use end-to-end Artific…

cs.AI2022

Exploring Lottery Ticket Hypothesis in Spiking Neural Networks

Youngeun Kim, Yuhang Li, Hyoungseob Park +3

Spiking Neural Networks (SNNs) have recently emerged as a new generation of low-power deep neural networks, which is suitable to be implemented on low-power mobile/edge devices. As…

cs.NE2022★ 3 cited

SATA: Sparsity-Aware Training Accelerator for Spiking Neural Networks

Ruokai Yin, Abhishek Moitra, Abhiroop Bhattacharjee +2

Spiking Neural Networks (SNNs) have gained huge attention as a potential energy-efficient alternative to conventional Artificial Neural Networks (ANNs) due to their inherent high-s…