Search Results for author: Chetan Gupta

Found 27 papers, 1 papers with code

Equipment Health Assessment: Time Series Analysis for Wind Turbine Performance

no code implementations1 Mar 2024 Jana Backhus, Aniruddha Rajendra Rao, Chandrasekar Venkatraman, Abhishek Padmanabhan, A. Vinoth Kumar, Chetan Gupta

In this study, we leverage SCADA data from diverse wind turbines to predict power output, employing advanced time series methods, specifically Functional Neural Networks (FNN) and Long Short-Term Memory (LSTM) networks.

Time Series Time Series Analysis

Predictive Analysis for Optimizing Port Operations

no code implementations25 Jan 2024 Aniruddha Rajendra Rao, HaiYan Wang, Chetan Gupta

This research addresses a significant gap in port analysis models for vessel Stay and Delay times, offering a valuable contribution to the field of maritime logistics.

Decision Making Scheduling

Optimal Load Shedding for Public Safety Power Shutoffs

no code implementations13 Nov 2023 Aniruddha Rajendra Rao, Chandrasekar Venkatraman, Robert Ellis, Chetan Gupta

This approach will help utilities to effectively manage PSPS events and reduce the risk of wildfires caused by the power lines.

An ensemble of convolution-based methods for fault detection using vibration signals

no code implementations5 May 2023 Xian Yeow Lee, Aman Kumar, Lasitha Vidyaratne, Aniruddha Rajendra Rao, Ahmed Farahat, Chetan Gupta

This paper focuses on solving a fault detection problem using multivariate time series of vibration signals collected from planetary gearboxes in a test rig.

Fault Detection Time Series +1

CDA: Contrastive-adversarial Domain Adaptation

no code implementations10 Jan 2023 Nishant Yadav, Mahbubul Alam, Ahmed Farahat, Dipanjan Ghosh, Chetan Gupta, Auroop R. Ganguly

Recent advances in domain adaptation reveal that adversarial learning on deep neural networks can learn domain invariant features to reduce the shift between source and target domains.

Contrastive Learning Domain Adaptation

A Functional approach for Two Way Dimension Reduction in Time Series

no code implementations1 Jan 2023 Aniruddha Rajendra Rao, HaiYan Wang, Chetan Gupta

The rise in data has led to the need for dimension reduction techniques, especially in the area of non-scalar variables, including time series, natural language processing, and computer vision.

Dimensionality Reduction Time Series +2

Sample-based Uncertainty Quantification with a Single Deterministic Neural Network

no code implementations17 Sep 2022 Takuya Kanazawa, Chetan Gupta

While this method has shown promising performance on a hand pose estimation task in computer vision, it remained unexplored whether this method works as nicely for regression on tabular data, and how it competes with more recent advanced UQ methods such as NGBoost.

Feature Importance Hand Pose Estimation +2

K-nearest Multi-agent Deep Reinforcement Learning for Collaborative Tasks with a Variable Number of Agents

no code implementations18 Jan 2022 Hamed Khorasgani, HaiYan Wang, Hsiu-Khuern Tang, Chetan Gupta

Traditionally, the performance of multi-agent deep reinforcement learning algorithms are demonstrated and validated in gaming environments where we often have a fixed number of agents.

Management reinforcement-learning +1

Deep Reinforcement Learning with Adjustments

no code implementations28 Sep 2021 Hamed Khorasgani, HaiYan Wang, Chetan Gupta, Susumu Serita

Our method can learn complex policies to achieve long-term goals and at the same time it can be easily adjusted to address short-term requirements without retraining.

Q-Learning reinforcement-learning +1

An Offline Deep Reinforcement Learning for Maintenance Decision-Making

no code implementations28 Sep 2021 Hamed Khorasgani, HaiYan Wang, Chetan Gupta, Ahmed Farahat

Several machine learning and deep learning frameworks have been proposed to solve remaining useful life estimation and failure prediction problems in recent years.

Decision Making reinforcement-learning +1

Data-driven Residual Generation for Early Fault Detection with Limited Data

no code implementations28 Sep 2021 Hamed Khorasgani, Ahmed Farahat, Chetan Gupta

Model-based fault detection and isolation methods use system model to generate a set of residuals as the bases for fault detection and isolation.

Fault Detection Time Series Analysis

Deep Time Series Models for Scarce Data

no code implementations16 Mar 2021 Qiyao Wang, Ahmed Farahat, Chetan Gupta, Shuai Zheng

Time series data have grown at an explosive rate in numerous domains and have stimulated a surge of time series modeling research.

Model Selection Time Series +1

A Non-linear Function-on-Function Model for Regression with Time Series Data

no code implementations24 Nov 2020 Qiyao Wang, HaiYan Wang, Chetan Gupta, Aniruddha Rajendra Rao, Hamed Khorasgani

Specifically, we aim to learn mathematical mappings from multiple chronologically measured numerical variables within a certain time interval S to multiple numerical variables of interest over time interval T. Prior arts, including the multivariate regression model, the Seq2Seq model, and the functional linear models, suffer from several limitations.

regression Time Series +1

Wisdom of the Ensemble: Improving Consistency of Deep Learning Models

1 code implementation NeurIPS 2020 Lijing Wang, Dipanjan Ghosh, Maria Teresa Gonzalez Diaz, Ahmed Farahat, Mahbubul Alam, Chetan Gupta, Jiangzhuo Chen, Madhav Marathe

Deep learning classifiers are assisting humans in making decisions and hence the user's trust in these models is of paramount importance.

Challenges of Applying Deep Reinforcement Learning in Dynamic Dispatching

no code implementations9 Nov 2020 Hamed Khorasgani, HaiYan Wang, Chetan Gupta

In this paper, we review the main challenges in using deep RL to address the dynamic dispatching problem in the mining industry.

reinforcement-learning Reinforcement Learning (RL)

Spatio-Temporal Functional Neural Networks

no code implementations11 Sep 2020 Aniruddha Rajendra Rao, Qiyao Wang, Hai-Yan Wang, Hamed Khorasgani, Chetan Gupta

Explosive growth in spatio-temporal data and its wide range of applications have attracted increasing interests of researchers in the statistical and machine learning fields.

regression Time Series +1

Health Indicator Forecasting for Improving Remaining Useful Life Estimation

no code implementations5 Jun 2020 Qiyao Wang, Ahmed Farahat, Chetan Gupta, Hai-Yan Wang

In these approaches, health indicator forecasting that constructs the health indicator curve over the lifespan using partially observed measurements (i. e., health indicator values within an initial period) plays a key role.

Building chatbots from large scale domain-specific knowledge bases: challenges and opportunities

no code implementations31 Dec 2019 Walid Shalaby, Adriano Arantes, Teresa GonzalezDiaz, Chetan Gupta

Popular conversational agents frameworks such as Alexa Skills Kit (ASK) and Google Actions (gActions) offer unprecedented opportunities for facilitating the development and deployment of voice-enabled AI solutions in various verticals.

Regularized Operating Envelope with Interpretability and Implementability Constraints

no code implementations21 Dec 2019 Qiyao Wang, Hai-Yan Wang, Chetan Gupta, Susumu Serita

However, a bigger challenge with these approaches is that they don't take into account two key features that are needed to operationalize operating envelopes: (i) interpretability of the envelope by the operator and (ii) implementability of the envelope from a practical standpoint.

Generative Adversarial Networks for Failure Prediction

no code implementations4 Oct 2019 Shuai Zheng, Ahmed Farahat, Chetan Gupta

GAN-FP first utilizes two GAN networks to simultaneously generate training samples and build an inference network that can be used to predict failures for new samples.

imbalanced classification Management

Long-term planning, short-term adjustments

no code implementations25 Sep 2019 Hamed Khorasgani, Chi Zhang, Chetan Gupta, Susumu Serita

Our method can learn complex policies to achieve long-term goals and at the same time it can be easily adjusted to address short-term requirements without retraining.

Q-Learning Reinforcement Learning (RL)

Remaining Useful Life Estimation Using Functional Data Analysis

no code implementations12 Apr 2019 Qiyao Wang, Shuai Zheng, Ahmed Farahat, Susumu Serita, Chetan Gupta

In this work, we propose a novel Functional Data Analysis (FDA) method called functional Multilayer Perceptron (functional MLP) for RUL estimation.

Management Time Series +1

Two Birds with One Network: Unifying Failure Event Prediction and Time-to-failure Modeling

no code implementations18 Dec 2018 Karan Aggarwal, Onur Atan, Ahmed Farahat, Chi Zhang, Kosta Ristovski, Chetan Gupta

Classically, this problem has been posed in two different ways which are typically solved independently: (1) Remaining useful life (RUL) estimation as a long-term prediction task to estimate how much time is left in the useful life of the equipment and (2) Failure prediction (FP) as a short-term prediction task to assess the probability of a failure within a pre-specified time window.

Multi-Task Learning

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