Ambrish Rawat

dblp:203/9075 · DBLP profile ↗
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4ranked-venue papers in the field
0as first author
2since 2021 · last 2023
0000-0002-3074-4567ORCID · corroborated

Domains — venue-derived; a paper can count in several

Big Data, Cloud & Distributed Data Systems · 2Data Mining & Knowledge Discovery · 1Information Retrieval & Web Search · 1
YearPublicationVenuePosition
2023 Pruning Federated Learning Models for Anomaly Detection in Resource-Constrained Environments
abstract
The evolving complexity of modern IT infrastructures has paved the way for malicious actors to exploit a wide array of vulnerabilities that can compromise the integrity of these systems. Monitoring complex IT systems is expensive and often requires dedicated infrastructure for deploying Intrusion and/or Anomaly Detection Systems. Moreover, ML-based solutions need large training sets, which add to the overall cost. To tackle these challenges we present INTELLECT, a novel approach to Intrusion and/or Anomaly Detection System, which leverages Federated Learning and model pruning techniques to cooperatively train high-accuracy models using distributed datasets and derive a fleet of lightweight models, which can be deployed without incurring additional costs for dedicated infrastructure. INTELLECT expands on the state-of-the-art techniques for feature selection, model pruning, and model distillation to create an interconnected pipeline. We empirically demonstrate the effectiveness of the methodology on benchmark datasets, and we present guidelines for the deployment in production systems.
Simone Magnani, Stefano Braghin, Ambrish Rawat, Roberto Doriguzzi Corin, Mark Purcell, Domenico Siracusa
IEEE Big Data3
2022 Machine Learning Platform for Extreme Scale Computing on Compressed IoT Data
abstract
With the lowering costs of sensors, high-volume and high-velocity data are increasingly being generated and analyzed, especially in IoT domains like energy and smart homes. Consequently, applications that require accurate short-term forecasts and predictions are also steadily increasing. In this paper, we provide an overview of a novel end-to-end platform that provides efficient ingestion, compression, transfer, query processing, and machine learning-based analytics for high-frequency and high-volume time series from IoT. The performance of the platform is evaluated using real-world dataset from RES installations. The results show the importance of high-frequency analytics and the surprisingly positive impact of error bounded lossy compression on machine learning in the form of AutoML. For example, when detecting yaw misalignments in wind turbines, an improvement of 9% in accuracy was observed for AutoML models on lossy compressed data compared to the current industry standard of 10-minute aggregated data. Thus, these small-scale experiments show the potential of the platform, and larger pilots are planned.
Seshu Tirupathi, Dhaval Salwala, Giulio Zizzo, Ambrish Rawat, Mark Purcell, Søren Kejser Jensen, Christian Thomsen 0001, Nguyen Ho, Carlos Muñiz Cuza, Jonas Brusokas, Torben Bach Pedersen, George Alexiou, Giorgos Giannopoulos, Panagiotis Gidarakos, Alexandros Kalimeris, Stavros Maroulis, George Papastefanatos, Ioannis Psarros, Vassilis Stamatopoulos, Manolis Terrovitis
IEEE Big Data4
2020 Automation of Deep Learning - Theory and Practice
abstract
The growing interest in both the automation of machine learning and deep learning has inevitably led to the development of a wide variety of methods to automate deep learning. The choice of network architecture has proven critical, and many improvements in deep learning are due to new structuring of it. However, deep learning techniques are computationally intensive and their use requires a high level of domain knowledge. Even a partial automation of this process therefore helps to make deep learning more accessible for everyone. In this tutorial we present a uniform formalism that enables different methods to be categorized and compare the different approaches in terms of their performance. We achieve this through a comprehensive discussion of the commonly used architecture search spaces and architecture optimization algorithms based on reinforcement learning and evolutionary algorithms as well as approaches that include surrogate and one-shot models. In addition, we discuss approaches to accelerate the search for neural architectures based on early termination and transfer learning and address the new research directions, which include constrained and multi-objective architecture search as well as the automated search for data augmentation, optimizers, and activation functions.
Martin Wistuba, Ambrish Rawat, Tejaswini Pedapati
ICMR2
2019 Scalable Large Margin Gaussian Process Classification
Martin Wistuba, Ambrish Rawat
ECML/PKDD (2)2