Search Results for author: Karan Aggarwal

Found 12 papers, 2 papers with code

Controlled Automatic Task-Specific Synthetic Data Generation for Hallucination Detection

no code implementations16 Oct 2024 Yong Xie, Karan Aggarwal, Aitzaz Ahmad, Stephen Lau

Hallucination pattern guidance leverages the most important task-specific hallucination patterns while language style alignment aligns the style of the synthetic dataset with benchmark text.

Hallucination In-Context Learning +1

Efficient Continual Pre-training for Building Domain Specific Large Language Models

no code implementations14 Nov 2023 Yong Xie, Karan Aggarwal, Aitzaz Ahmad

We further explore simple but effective data selection strategies for continual pre-training.

Embarrassingly Simple MixUp for Time-series

no code implementations9 Apr 2023 Karan Aggarwal, Jaideep Srivastava

Labeling time series data is an expensive task because of domain expertise and dynamic nature of the data.

Data Augmentation Time Series +1

Filling out the missing gaps: Time Series Imputation with Semi-Supervised Learning

no code implementations9 Apr 2023 Karan Aggarwal, Jaideep Srivastava

Our results indicate that the proposed method outperforms the existing supervised and unsupervised time series imputation methods measured on the imputation quality as well as on the downstream tasks ingesting imputed time series.

Imputation Time Series +1

Benchmarking Regression Methods: A comparison with CGAN

1 code implementation30 May 2019 Karan Aggarwal, Matthieu Kirchmeyer, Pranjul Yadav, S. Sathiya Keerthi, Patrick Gallinari

Such a real world situation is best represented using an implicit model in which an extra noise vector, $z$ is included with $x$ as input.

Benchmarking regression

Optimizing the Linear Fascicle Evaluation Algorithm for Multi-Core and Many-Core Systems

no code implementations14 May 2019 Karan Aggarwal, Uday Bondhugula

Among recent representation techniques, tensor decomposition is a popular one used for very large but sparse matrices.

Tensor Decomposition

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

Adversarial Unsupervised Representation Learning for Activity Time-Series

no code implementations14 Nov 2018 Karan Aggarwal, Shafiq Joty, Luis Fernandez-Luque, Jaideep Srivastava

Sufficient physical activity and restful sleep play a major role in the prevention and cure of many chronic conditions.

Representation Learning Time Series +1

A Structured Learning Approach with Neural Conditional Random Fields for Sleep Staging

no code implementations23 Jul 2018 Karan Aggarwal, Swaraj Khadanga, Shafiq R. Joty, Louis Kazaglis, Jaideep Srivastava

We propose an end-to-end framework that uses a combination of deep convolution and recurrent neural networks to extract high-level features from raw flow signal with a structured output layer based on a conditional random field to model the temporal transition structure of the sleep stages.

Sleep Staging

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