Search Results for author: Vishnu Tv

Found 7 papers, 1 papers with code

Graph Neural Networks for Leveraging Industrial Equipment Structure: An application to Remaining Useful Life Estimation

no code implementations30 Jun 2020 Jyoti Narwariya, Pankaj Malhotra, Vishnu Tv, Lovekesh Vig, Gautam Shroff

Deep learning models such as those based on recurrent neural networks (RNNs) or convolutional neural networks (CNNs) fail to explicitly leverage this potentially rich source of domain-knowledge into the learning procedure.

Time Series Time Series Analysis

Meta-Learning for Few-Shot Time Series Classification

no code implementations13 Sep 2019 Jyoti Narwariya, Pankaj Malhotra, Lovekesh Vig, Gautam Shroff, Vishnu Tv

We overcome this limitation in order to train a common agent across domains with each domain having different number of target classes, we utilize a triplet-loss based learning procedure that does not require any constraints to be enforced on the number of classes for the few-shot TSC tasks.

Activity Recognition Classification +5

Meta-Learning for Black-box Optimization

no code implementations16 Jul 2019 Vishnu TV, Pankaj Malhotra, Jyoti Narwariya, Lovekesh Vig, Gautam Shroff

Recently, neural networks trained as optimizers under the "learning to learn" or meta-learning framework have been shown to be effective for a broad range of optimization tasks including derivative-free black-box function optimization.

Meta-Learning

Data-driven Prognostics with Predictive Uncertainty Estimation using Ensemble of Deep Ordinal Regression Models

no code implementations23 Mar 2019 Vishnu TV, Diksha, Pankaj Malhotra, Lovekesh Vig, Gautam Shroff

We propose a novel deep learning based approach for Prognostics with Uncertainty Quantification that is useful in scenarios where: (i) access to labeled failure data is scarce due to rarity of failures (ii) future operational conditions are unobserved and (iii) inherent noise is present in the sensor readings.

regression Time Series Analysis +1

Predicting Remaining Useful Life using Time Series Embeddings based on Recurrent Neural Networks

no code implementations4 Sep 2017 Narendhar Gugulothu, Vishnu Tv, Pankaj Malhotra, Lovekesh Vig, Puneet Agarwal, Gautam Shroff

We propose Embed-RUL: a novel approach for RUL estimation from sensor data that does not rely on any degradation-trend assumptions, is robust to noise, and handles missing values.

Time Series Time Series Analysis

TimeNet: Pre-trained deep recurrent neural network for time series classification

2 code implementations23 Jun 2017 Pankaj Malhotra, Vishnu Tv, Lovekesh Vig, Puneet Agarwal, Gautam Shroff

Inspired by the tremendous success of deep Convolutional Neural Networks as generic feature extractors for images, we propose TimeNet: a deep recurrent neural network (RNN) trained on diverse time series in an unsupervised manner using sequence to sequence (seq2seq) models to extract features from time series.

Dynamic Time Warping General Classification +3

Multi-Sensor Prognostics using an Unsupervised Health Index based on LSTM Encoder-Decoder

no code implementations22 Aug 2016 Pankaj Malhotra, Vishnu Tv, Anusha Ramakrishnan, Gaurangi Anand, Lovekesh Vig, Puneet Agarwal, Gautam Shroff

Many approaches for estimation of Remaining Useful Life (RUL) of a machine, using its operational sensor data, make assumptions about how a system degrades or a fault evolves, e. g., exponential degradation.

Exponential degradation Time Series +1

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