Search Results for author: Niraj Kumar

Found 14 papers, 0 papers with code

QC-Forest: a Classical-Quantum Algorithm to Provably Speedup Retraining of Random Forest

no code implementations17 Jun 2024 Romina Yalovetzky, Niraj Kumar, Changhao Li, Marco Pistoia

In this setting, performing periodic model retraining with the old and new data accumulated is beneficial as it fully captures possible drifts in the data distribution over time.

Multi-class Classification

Prospects of Privacy Advantage in Quantum Machine Learning

no code implementations14 May 2024 Jamie Heredge, Niraj Kumar, Dylan Herman, Shouvanik Chakrabarti, Romina Yalovetzky, Shree Hari Sureshbabu, Changhao Li, Marco Pistoia

We establish conditions on the encoding map such as classical simulatability, overlap with DLA basis, and its Fourier frequency characteristics that enable such a privacy breach of VQC models.

Quantum Machine Learning

Privacy-preserving quantum federated learning via gradient hiding

no code implementations7 Dec 2023 Changhao Li, Niraj Kumar, Zhixin Song, Shouvanik Chakrabarti, Marco Pistoia

Distributed quantum computing, particularly distributed quantum machine learning, has gained substantial prominence for its capacity to harness the collective power of distributed quantum resources, transcending the limitations of individual quantum nodes.

Distributed Computing Federated Learning +3

Expressive variational quantum circuits provide inherent privacy in federated learning

no code implementations22 Sep 2023 Niraj Kumar, Jamie Heredge, Changhao Li, Shaltiel Eloul, Shree Hari Sureshbabu, Marco Pistoia

However, standard neural network-based federated learning models have been shown to be susceptible to data leakage from the gradients shared with the server.

Federated Learning Quantum Machine Learning

Integral Transforms in a Physics-Informed (Quantum) Neural Network setting: Applications & Use-Cases

no code implementations28 Jun 2022 Niraj Kumar, Evan Philip, Vincent E. Elfving

Recently, the machine learning paradigm of Physics-Informed Neural Networks emerged with increasing popularity as a method to solve differential equations by leveraging automatic differentiation.

Graph neural network initialisation of quantum approximate optimisation

no code implementations4 Nov 2021 Nishant Jain, Brian Coyle, Elham Kashefi, Niraj Kumar

In this work, we focus on the quantum approximate optimisation algorithm (QAOA) for solving the MaxCut problem.

Graph Neural Network Meta-Learning

Efficient Construction of Quantum Physical Unclonable Functions with Unitary t-designs

no code implementations14 Jan 2021 Niraj Kumar, Rawad Mezher, Elham Kashefi

Quantum physical unclonable functions, or QPUFs, are rapidly emerging as theoretical hardware solutions to provide secure cryptographic functionalities such as key-exchange, message authentication, entity identification among others.

Quantum Physics

Variational Quantum Cloning: Improving Practicality for Quantum Cryptanalysis

no code implementations21 Dec 2020 Brian Coyle, Mina Doosti, Elham Kashefi, Niraj Kumar

In this work, we propose variational quantum cloning (VQC), a quantum machine learning based cryptanalysis algorithm which allows an adversary to obtain optimal (approximate) cloning strategies with short depth quantum circuits, trained using hybrid classical-quantum techniques.

Adversarial Attack Cryptanalysis +1

Quantum versus Classical Generative Modelling in Finance

no code implementations3 Aug 2020 Brian Coyle, Maxwell Henderson, Justin Chan Jin Le, Niraj Kumar, Marco Paini, Elham Kashefi

Finding a concrete use case for quantum computers in the near term is still an open question, with machine learning typically touted as one of the first fields which will be impacted by quantum technologies.

BIG-bench Machine Learning Open-Ended Question Answering

A Unified System for Aggression Identification in English Code-Mixed and Uni-Lingual Texts

no code implementations15 Jan 2020 Anant Khandelwal, Niraj Kumar

To solve these problems, we have introduced a unified and robust multi-modal deep learning architecture which works for English code-mixed dataset and uni-lingual English dataset both. The devised system, uses psycho-linguistic features and very ba-sic linguistic features.

Aggression Identification Cross-Lingual Transfer +3

OntoCat: Automatically categorizing knowledge in API Documentation

no code implementations26 Jul 2016 Niraj Kumar, Premkumar Devanbu

Most application development happens in the context of complex APIs; reference documentation for APIs has grown tremendously in variety, complexity, and volume, and can be difficult to navigate.

Navigate

Exploring the Role of Logically Related Non-Question Phrases for Answering Why-Questions

no code implementations29 Mar 2013 Niraj Kumar, Rashmi Gangadharaiah, Kannan Srinathan, Vasudeva Varma

Next, we apply an improved version of ranking with a prior-based approach, which ranks all words in the candidate document with respect to a set of root words (i. e. non-stopwords present in the question and in the candidate document).

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