Search Results for author: Abhinav Kumar

Found 37 papers, 9 papers with code

A Survey of Application of Machine Learning in Wireless Indoor Positioning Systems

no code implementations7 Mar 2024 Amala Sonny, Abhinav Kumar, Linga Reddy Cenkeramaddi

Numerous attempts have been made in the literature to develop efficient indoor positioning systems (IPSs), with a growing focus on machine learning (ML) based techniques.

Activity Recognition Human Detection +1

Causal Inference Using LLM-Guided Discovery

no code implementations23 Oct 2023 Aniket Vashishtha, Abbavaram Gowtham Reddy, Abhinav Kumar, Saketh Bachu, Vineeth N Balasubramanian, Amit Sharma

At the core of causal inference lies the challenge of determining reliable causal graphs solely based on observational data.

Causal Discovery Causal Inference

Tame a Wild Camera: In-the-Wild Monocular Camera Calibration

1 code implementation NeurIPS 2023 Shengjie Zhu, Abhinav Kumar, Masa Hu, Xiaoming Liu

3D sensing for monocular in-the-wild images, e. g., depth estimation and 3D object detection, has become increasingly important.

3D Object Detection Camera Calibration +6

Causal Effect Regularization: Automated Detection and Removal of Spurious Attributes

no code implementations19 Jun 2023 Abhinav Kumar, Amit Deshpande, Amit Sharma

We prove that our method only requires that the ranking of estimated causal effects is correct across attributes to select the correct classifier.

Attribute

A Generative Framework for Low-Cost Result Validation of Outsourced Machine Learning Tasks

no code implementations31 Mar 2023 Abhinav Kumar, Miguel A. Guirao Aguilera, Reza Tourani, Satyajayant Misra

Fides features a client-side attack detection model that uses statistical analysis and divergence measurements to identify, with a high likelihood, if the service model is under attack.

Autonomous Driving Generative Adversarial Network +1

Disentangling Mixtures of Unknown Causal Interventions

no code implementations1 Oct 2022 Abhinav Kumar, Gaurav Sinha

In many real-world scenarios, such as gene knockout experiments, targeted interventions are often accompanied by unknown interventions at off-target sites.

Reference Resolution and Context Change in Multimodal Situated Dialogue for Exploring Data Visualizations

no code implementations6 Sep 2022 Abhinav Kumar, Barbara Di Eugenio, Abari Bhattacharya, Jillian Aurisano, Andrew Johnson

Our focus is on resolving references to visualizations on a large screen display in multimodal dialogue; crucially, reference resolution is directly involved in the process of creating new visualizations.

Transfer Learning

Probing Classifiers are Unreliable for Concept Removal and Detection

no code implementations8 Jul 2022 Abhinav Kumar, Chenhao Tan, Amit Sharma

Even under the most favorable conditions for learning a probing classifier when a concept's relevant features in representation space alone can provide 100% accuracy, we prove that a probing classifier is likely to use non-concept features and thus post-hoc or adversarial methods will fail to remove the concept correctly.

Fairness

Adaptive Multi-User Clustering and Power Allocation for NOMA Systems with Imperfect SIC

no code implementations29 Mar 2022 Nemalidinne Siva Mouni, Pavan Reddy M., Abhinav Kumar, Prabhat K. Upadhyay

We consider a practical downlink NOMA system with imperfect successive interference cancellation and derive bounds on the power allocation factors for a given number of users in each cluster.

Clustering

Bounds on Power and Common Message Fractions for RSMA with Imperfect SIC

no code implementations5 Mar 2022 Garima Chopra, Akhileswar Chowdary, Abhinav Kumar, Marwa Chafii

However, it has been shown in the existing works that maximizing the sum rate can result in asymmetric user performance.

$α$-Fairness User Pairing for Downlink NOMA Systems with Imperfect Successive Interference Cancellation

no code implementations23 Jan 2022 Nemalidinne Siva Mouni, Pavan Reddy M., Abhinav Kumar, Prabhat K. Upadhyay

Further, we show that the proposed optimal and sub-optimal algorithms achieve significant improvements in terms of fairness as compared to the state-of-the-art algorithms.

Fairness

Impact of NOMA and CoMP Implementation Order on the Performance of Ultra-Dense Networks

no code implementations10 Jan 2022 Akhileswar Chowdary, Garima Chopra, Abhinav Kumar, Linga Reddy Cenkeramaddi

Non-orthogonal multiple access (NOMA) is a promising multiple access technology to improve the throughput and spectral efficiency of the users for 5G and beyond cellular networks.

Misinformation Detection on YouTube Using Video Captions

1 code implementation2 Jul 2021 Raj Jagtap, Abhinav Kumar, Rahul Goel, Shakshi Sharma, Rajesh Sharma, Clint P. George

Using caption dataset, the proposed models can classify videos among three classes (Misinformation, Debunking Misinformation, and Neutral) with 0. 85 to 0. 90 F1-score.

Misinformation

GrooMeD-NMS: Grouped Mathematically Differentiable NMS for Monocular 3D Object Detection

1 code implementation CVPR 2021 Abhinav Kumar, Garrick Brazil, Xiaoming Liu

In this paper, we present and integrate GrooMeD-NMS -- a novel Grouped Mathematically Differentiable NMS for monocular 3D object detection, such that the network is trained end-to-end with a loss on the boxes after NMS.

3D Object Detection From Monocular Images Monocular 3D Object Detection +2

Scaling Up Exact Neural Network Compression by ReLU Stability

1 code implementation NeurIPS 2021 Thiago Serra, Xin Yu, Abhinav Kumar, Srikumar Ramalingam

We can compress a rectifier network while exactly preserving its underlying functionality with respect to a given input domain if some of its neurons are stable.

Neural Network Compression

Adaptive User Pairing for Downlink NOMA System with Imperfect SIC

no code implementations13 Dec 2020 Nemalidinne Siva Mouni, Abhinav Kumar, Prabhat K. Upadhyay

Non-orthogonal multiple access (NOMA) has been recognized as a key driving technology for the fifth generation (5G) and beyond 5G cellular networks.

NOMA for Multiple Access Channel and Broadcast Channel in Indoor VLC

no code implementations13 Aug 2020 T. Uday, Abhinav Kumar, L. Natarajan

We evaluate the performance of the proposed scheme for MAC using successive interference cancellation (SIC) based decoding, joint maximum likelihood (JML) decoding, and a combination of SIC and JML decoding.

Lossless Compression of Deep Neural Networks

no code implementations1 Jan 2020 Thiago Serra, Abhinav Kumar, Srikumar Ramalingam

Deep neural networks have been successful in many predictive modeling tasks, such as image and language recognition, where large neural networks are often used to obtain good accuracy.

Equivalent and Approximate Transformations of Deep Neural Networks

no code implementations27 May 2019 Abhinav Kumar, Thiago Serra, Srikumar Ramalingam

On the practical side, we show that certain rectified linear units (ReLUs) can be safely removed from a network if they are always active or inactive for any valid input.

Location reference identification from tweets during emergencies: A deep learning approach

no code implementations24 Jan 2019 Abhinav Kumar, Jyoti Prakash Singh

Twitter is recently being used during crises to communicate with officials and provide rescue and relief operation in real time.

Management

Parametric Synthesis of Text on Stylized Backgrounds using PGGANs

no code implementations22 Sep 2018 Mayank Gupta, Abhinav Kumar, Sriganesh Madhvanath

We describe a novel method of generating high-resolution real-world images of text where the style and textual content of the images are described parametrically.

Image Retrieval License Plate Recognition +1

Neural Signatures for Licence Plate Re-identification

no code implementations1 Dec 2017 Abhinav Kumar, Shantanu Gupta, Vladimir Kozitsky, Sriganesh Madhvanath

The template database is restricted to contain only a single signature per unique licence plate for our problem.

Face Recognition Image Retrieval +1

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