Search Results for author: Deepak Mishra

Found 27 papers, 6 papers with code

OPTiML: Dense Semantic Invariance Using Optimal Transport for Self-Supervised Medical Image Representation

no code implementations18 Apr 2024 Azad Singh, Vandan Gorade, Deepak Mishra

In response to these constraints, we introduce a novel SSL framework OPTiML, employing optimal transport (OT), to capture the dense semantic invariance and fine-grained details, thereby enhancing the overall effectiveness of SSL in medical image representation learning.

Representation Learning Self-Supervised Learning

MLVICX: Multi-Level Variance-Covariance Exploration for Chest X-ray Self-Supervised Representation Learning

no code implementations18 Mar 2024 Azad Singh, Vandan Gorade, Deepak Mishra

The performance enhancements we observe across various downstream tasks highlight the significance of the proposed approach in enhancing the utility of chest X-ray embeddings for precision medical diagnosis and comprehensive image analysis.

Medical Diagnosis Representation Learning +1

Multi-Agent Reinforcement Learning for Offloading Cellular Communications with Cooperating UAVs

no code implementations5 Feb 2024 Abhishek Mondal, Deepak Mishra, Ganesh Prasad, George C. Alexandropoulos, Azzam Alnahari, Riku Jantti

Effective solutions for intelligent data collection in terrestrial cellular networks are crucial, especially in the context of Internet of Things applications.

Decision Making Multi-agent Reinforcement Learning +2

Jointly Optimal RIS Placement and Power Allocation for Underlay D2D Communications: An Outage Probability Minimization Approach

no code implementations21 Dec 2023 Sarbani Ghose, Deepak Mishra, Santi P. Maity, George C. Alexandropoulos

In the transformed problem, an expression for the average value of the signal-to-interference-noise ratio (SINR) at the D2D receiver is derived in closed-form.

Distilling Calibrated Student from an Uncalibrated Teacher

no code implementations22 Feb 2023 Ishan Mishra, Sethu Vamsi Krishna, Deepak Mishra

Knowledge distillation is a common technique for improving the performance of a shallow student network by transferring information from a teacher network, which in general, is comparatively large and deep.

Data Augmentation Knowledge Distillation

GITz: Graphene-assisted IRS Design for THz Communication

no code implementations3 May 2022 Bhupendra Sharma, Anirudh Agarwal, Deepak Mishra, Soumitra Debnath

Graphene-based intelligent reflecting surface (GIRS) has been proved to provide a promising propagation environment to enhance the quality of high frequency terahertz (THz) wireless communication.

Large Scale Time-Series Representation Learning via Simultaneous Low and High Frequency Feature Bootstrapping

no code implementations24 Apr 2022 Vandan Gorade, Azad Singh, Deepak Mishra

To tackle these problems, we propose a non-contrastive self-supervised learning approach efficiently captures low and high-frequency time-varying features in a cost-effective manner.

Contrastive Learning Representation Learning +3

Circuit Characterization of IRS to Control Beamforming Design for Efficient Wireless Communication

no code implementations11 Dec 2021 Bhupendra Sharma, Anirudh Agarwal, Deepak Mishra, Soumitra Debnath

We have obtained closed-form expressions of PS, RA and $C$ in terms of transmission frequency of signal incident to IRS and various electrical parameters of IRS circuit, with a novel touch towards an accurate analytical model for a better beamforming design perspective.

Pose Invariant Person Re-Identification using Robust Pose-transformation GAN

1 code implementation11 Apr 2021 Arnab Karmakar, Deepak Mishra

The given instance of the person is modelled in varying poses and these features are effectively combined through the Feature Fusion Network.

Clustering Image Generation +1

Domain Adaptive Egocentric Person Re-identification

no code implementations8 Mar 2021 Ankit Choudhary, Deepak Mishra, Arnab Karmakar

Machine learning models trained on the publicly available large scale re-ID datasets cannot be applied to egocentric re-ID due to the dataset bias problem.

Person Re-Identification Style Transfer

Probabilistic Trust Intervals for Out of Distribution Detection

1 code implementation2 Feb 2021 Gagandeep Singh, Deepak Mishra

In this paper, we propose a very simple approach for enhancing the ability of a pretrained network to detect OOD inputs without even altering the original parameter values.

Out-of-Distribution Detection Out of Distribution (OOD) Detection

Neural Pooling for Graph Neural Networks

no code implementations1 Jan 2021 Sai Sree Harsha, Deepak Mishra

Our proposed methods have the ability to handle variable number of nodes in different graphs, and are also invariant to the isomorphic structures of graphs.

General Classification Graph Classification

Indirect Supervision to Mitigate Perturbations

no code implementations1 Jan 2021 Mayank Kumar Kundalwal, Azad Singh, Deepak Mishra

We propose to model this problem in indirect supervision framework, where we assume that the gold standard data is missing, however, a variable dependent on it is available and the dependency of the observed variable is stated by the considered downstream DNN.

Image Segmentation Medical Image Segmentation +1

Target-Independent Domain Adaptation for WBC Classification using Generative Latent Search

1 code implementation11 May 2020 Prashant Pandey, Prathosh AP, Vinay Kyatham, Deepak Mishra, Tathagato Rai Dastidar

We prove the existence of such a clone given that infinite number of data points can be sampled from the source distribution.

Effect of The Latent Structure on Clustering with GANs

1 code implementation5 May 2020 Deepak Mishra, Aravind Jayendran, Prathosh A. P

We derive from first principles, the necessary and sufficient conditions needed to achieve faithful clustering in the GAN framework: (i) presence of a multimodal latent space with adjustable priors, (ii) existence of a latent space inversion mechanism and (iii) imposition of the desired cluster priors on the latent space.

Clustering

A Robust Pose Transformational GAN for Pose Guided Person Image Synthesis

no code implementations5 Jan 2020 Arnab Karmakar, Deepak Mishra

Generating photorealistic images of human subjects in any unseen pose have crucial applications in generating a complete appearance model of the subject.

Data Augmentation Foreground Segmentation +1

Unsupervised Anomalous Trajectory Detection for Crowded Scenes

no code implementations3 Jul 2019 Deepan Das, Deepak Mishra

The proposed work is based on four major steps, namely, extraction of trajectories from crowded scene video, extraction of several features from these trajectories, independent mean-shift clustering and anomaly detection.

Anomaly Detection Clustering

Variational Inference with Latent Space Quantization for Adversarial Resilience

1 code implementation24 Mar 2019 Vinay Kyatham, Mayank Mishra, Tarun Kumar Yadav, Deepak Mishra, Prathosh AP

Specifically, we simultaneously auto-encode the data manifold and its perturbations implicitly through the perturbations of the regularized and quantized generative latent space, realized using variational inference.

Quantization valid +1

How You See Me

no code implementations20 Nov 2018 Rohit Gandikota, Deepak Mishra

Convolution Neural Networks is one of the most powerful tools in the present era of science.

Math

Mode matching in GANs through latent space learning and inversion

no code implementations8 Nov 2018 Deepak Mishra, Prathosh A. P., Aravind Jayendran, Varun Srivastava, Santanu Chaudhury

Generative adversarial networks (GANs) have shown remarkable success in generation of unstructured data, such as, natural images.

Attribute

Unsupervised Conditional Generation using noise engineered mode matching GAN

no code implementations27 Sep 2018 Deepak Mishra, Prathosh AP, Aravind J, Prashant Pandey, Santanu Chaudhury

Conditional generation refers to the process of sampling from an unknown distribution conditioned on semantics of the data.

Attribute Generative Adversarial Network

Unsupervised Despeckling

no code implementations10 Jan 2018 Deepak Mishra, Santanu Chaudhury, Mukul Sarkar, Arvinder Singh Soin

Contrast and quality of ultrasound images are adversely affected by the excessive presence of speckle.

Rotation Adaptive Visual Object Tracking with Motion Consistency

1 code implementation18 Sep 2017 Litu Rout, Sidhartha, Gorthi R. K. S. S. Manyam, Deepak Mishra

Therefore, one of the major aspects of this paper is to investigate the outcome of rotation adaptiveness in visual object tracking.

feature selection Object +1

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