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🔍 vikram ravindra 📂 Engineering
Showing 123 results for "vikram ravindra" in Engineering
Engineering Preprint PDF DOI

CBAM-Enhanced DenseNet121 for Multi-Class Chest X-Ray Classification with Grad-CAM Explainability

Utsho Kumar Dey · 2026

Pneumonia remains a leading cause of childhood mortality worldwide, with a heavy burden in low-resource settings such as Bangladesh where radiologist availability is limited. Most existing deep learni…

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Engineering Preprint PDF DOI

Matched Filter-Based Molecule Source Localization in Advection-Diffusion-Driven Pipe Networks with Known Topology

Timo Jakumeit, Bastian Heinlein, Vukasin Spasojevic, Vahid Jamali, Robert Schober, Maximilian Schafer · 2026

Synthetic molecular communication (MC) has emerged as a powerful framework for modeling, analyzing, and designing communication systems where information is encoded into properties of molecules. Among…

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Engineering Preprint PDF DOI

MamTra: A Hybrid Mamba-Transformer Backbone for Speech Synthesis

Tan Dat Nguyen, Sangmin Bae, Joon Son Chung, Ji-Hoon Kim · 2026

Despite the remarkable quality of LLM-based text-to-speech systems, their reliance on autoregressive Transformers leads to quadratic computational complexity, which severely limits practical applicati…

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Engineering Preprint PDF DOI

Compact Task-Aligned Imitation Learning for Laboratory Automation

Kanata Suzuki, Hanon Nakamurama, Kana Miyamoto, Tetsuya Ogata · 2026

Robotic laboratory automation has traditionally relied on carefully engineered motion pipelines and task-specific hardware interfaces, resulting in high design cost and limited flexibility. While rece…

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Engineering Preprint PDF DOI

Windowed SummaryMixing: An Efficient Fine-Tuning of Self-Supervised Learning Models for Low-resource Speech Recognition

Aditya Srinivas Menon, Kumud Tripathi, Raj Gohil, Pankaj Wasnik · 2026

Self-supervised learning (SSL) has advanced speech processing but suffers from quadratic complexity due to self-attention. To address this, SummaryMixing (SM) has been proposed as a linear-time altern…

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Engineering Preprint PDF DOI

Towards Accessible Physical AI: LoRA-Based Fine-Tuning of VLA Models for Real-World Robot Control

Abdullah Yahya Abdullah Omaisan, Ibrahim Sheikh Mohamed · 2025

Vision-Language-Action (VLA) models have demonstrated remarkable capabilities in robotic manipulation,enabling robots to execute natural language commands through end-to-end learning from visual obser…

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Engineering Preprint PDF DOI

MedCondDiff: Lightweight, Robust, Semantically Guided Diffusion for Medical Image Segmentation

Ruirui Huang, Jiacheng Li · 2025

We introduce MedCondDiff, a diffusion-based framework for multi-organ medical image segmentation that is efficient and anatomically grounded. The model conditions the denoising process on semantic pri…

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Engineering Preprint PDF DOI

VIRAL: Visual Sim-to-Real at Scale for Humanoid Loco-Manipulation

Tairan He, Zi Wang, Haoru Xue, Qingwei Ben, Zhengyi Luo, Wenli Xiao, Ye Yuan, Xingye Da, Fernando Castaneda, Shankar Sastry, Changliu Liu, Guanya Shi, Linxi Fan, Yuke Zhu · 2025

A key barrier to the real-world deployment of humanoid robots is the lack of autonomous loco-manipulation skills. We introduce VIRAL, a visual sim-to-real framework that learns humanoid loco-manipulat…

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Engineering Preprint PDF DOI

ViPRA: Video Prediction for Robot Actions

Sandeep Routray, Hengkai Pan, Unnat Jain, Shikhar Bahl, Deepak Pathak · 2025

Can we turn a video prediction model into a robot policy? Videos, including those of humans or teleoperated robots, capture rich physical interactions. However, most of them lack labeled actions, whic…

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Engineering Preprint PDF DOI

Coordinate-Consistent Localization via Continuous-Time Calibration and Fusion of UWB and SLAM Observations

Tien-Dat Nguyen, Thien-Minh Nguyen, Vinh-Hao Nguyen · 2025

Onboard simultaneous localization and mapping (SLAM) methods are commonly used to provide accurate localization information for autonomous robots. However, the coordinate origin of SLAM estimate often…

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Engineering Preprint PDF DOI

SPADE: Structured Pruning and Adaptive Distillation for Efficient LLM-TTS

Tan Dat Nguyen, Jaehun Kim, Ji-Hoon Kim, Shukjae Choi, Youshin Lim, Joon Son Chung · 2025

The goal of this paper is to introduce SPADE, a framework for Structured Pruning and Adaptive Distillation for Efficient Large Language Model-based text-to-speech (LLM-TTS). Recent LLM-TTS systems ach…

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Engineering Preprint PDF DOI

Benchmarking Massively Parallelized Multi-Task Reinforcement Learning for Robotics Tasks

Viraj Joshi, Zifan Xu, Bo Liu, Peter Stone, Amy Zhang · 2025

Multi-task Reinforcement Learning (MTRL) has emerged as a critical training paradigm for applying reinforcement learning (RL) to a set of complex real-world robotic tasks, which demands a generalizabl…

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Engineering Preprint PDF DOI

Deep-Learning-Assisted Highly-Accurate COVID-19 Diagnosis on Lung Computed Tomography Images

Yinuo Wang, Juhyun Bae, Ka Ho Chow, Shenyang Chen, Shreyash Gupta · 2025

COVID-19 is a severe and acute viral disease that can cause symptoms consistent with pneumonia in which inflammation is caused in the alveolous regions of the lungs leading to a build-up of fluid and …

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Engineering Preprint PDF DOI

A Comprehensive Analysis of COVID-19 Detection Using Bangladeshi Data and Explainable AI

Shuvashis Sarker · 2025

COVID-19 is a rapidly spreading and highly infectious virus which has triggered a global pandemic, profoundly affecting millions across the world. The pandemic has introduced unprecedented challenges …

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Engineering Preprint PDF DOI

Comparative Evaluation of Radiomics and Deep Learning Models for Disease Detection in Chest Radiography

Zhijin He, Alan B. McMillan · 2025

The application of artificial intelligence (AI) in medical imaging has revolutionized diagnostic practices, enabling advanced analysis and interpretation of radiological data. This study presents a co…

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Engineering Preprint PDF DOI

Automated diagnosis of lung diseases using vision transformer: a comparative study on chest x-ray classification

Muhammad Ahmad, Sardar Usman, Ildar Batyrshin, Muhammad Muzammil, K. Sajid, M. Hasnain, Muhammad Jalal, Grigori Sidorov · 2025

Background: Lung disease is a significant health issue, particularly in children and elderly individuals. It often results from lung infections and is one of the leading causes of mortality in childre…

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Engineering Preprint PDF DOI

ViLAM: Distilling Vision-Language Reasoning into Attention Maps for Social Robot Navigation

Mohamed Elnoor, Kasun Weerakoon, Gershom Seneviratne, Jing Liang, Vignesh Rajagopal, Dinesh Manocha · 2025

We introduce ViLAM, a novel method for distilling vision-language reasoning from large Vision-Language Models (VLMs) into spatial attention maps for socially compliant robot navigation. Unlike traditi…

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Engineering Preprint PDF DOI

Diagnosis of Patients with Viral, Bacterial, and Non-Pneumonia Based on Chest X-Ray Images Using Convolutional Neural Networks

Carlos Arizmendi, Jorge Pinto, Alejandro Arboleda, Hernando Gonzalez · 2025

According to the World Health Organization (WHO), pneumonia is a disease that causes a significant number of deaths each year. In response to this issue, the development of a decision support system f…

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Engineering Preprint PDF DOI

LIR-LIVO: A Lightweight,Robust LiDAR/Vision/Inertial Odometry with Illumination-Resilient Deep Features

Shujie Zhou, Zihao Wang, Xinye Dai, Weiwei Song, Shengfeng Gu · 2025

In this paper, we propose LIR-LIVO, a lightweight and robust LiDAR-inertial-visual odometry system designed for challenging illumination and degraded environments. The proposed method leverages deep l…

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Engineering Preprint PDF DOI

Modeling and Designing Non-Pharmaceutical Interventions in Epidemics: A Submodular Approach

Shiyu Cheng, Luyao Niu, Bhaskar Ramasubramanian, Andrew Clark, Radha Poovendran · 2024

This paper considers the problem of designing non-pharmaceutical intervention (NPI) strategies, such as masking and social distancing, to slow the spread of a viral epidemic. We formulate the problem …

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