Search Results for author: Ankush Khandelwal

Found 16 papers, 2 papers with code

Combining Satellite and Weather Data for Crop Type Mapping: An Inverse Modelling Approach

no code implementations29 Jan 2024 Praveen Ravirathinam, Rahul Ghosh, Ankush Khandelwal, Xiaowei Jia, David Mulla, Vipin Kumar

We finally discuss the impact of weather by correlating our results with crop phenology to show that WSTATT is able to capture physical properties of crop growth.

Crop Type Mapping

Task Aware Modulation using Representation Learning: An Approach for Few Shot Learning in Heterogeneous Systems

no code implementations7 Oct 2023 Arvind Renganathan, Rahul Ghosh, Ankush Khandelwal, Vipin Kumar

We present a Task-aware modulation using Representation Learning (TAM-RL) framework that enhances personalized predictions in few-shot settings for heterogeneous systems when individual task characteristics are not known.

Few-Shot Learning Representation Learning

Message Propagation Through Time: An Algorithm for Sequence Dependency Retention in Time Series Modeling

no code implementations28 Sep 2023 Shaoming Xu, Ankush Khandelwal, Arvind Renganathan, Vipin Kumar

Time series modeling, a crucial area in science, often encounters challenges when training Machine Learning (ML) models like Recurrent Neural Networks (RNNs) using the conventional mini-batch training strategy that assumes independent and identically distributed (IID) samples and initializes RNNs with zero hidden states.

Time Series

Entity Aware Modelling: A Survey

no code implementations16 Feb 2023 Rahul Ghosh, HaoYu Yang, Ankush Khandelwal, Erhu He, Arvind Renganathan, Somya Sharma, Xiaowei Jia, Vipin Kumar

However, these entity characteristics are not readily available in many real-world scenarios, and different ML methods have been proposed to infer these characteristics from the data.

Fairness Uncertainty Quantification

Mini-Batch Learning Strategies for modeling long term temporal dependencies: A study in environmental applications

1 code implementation15 Oct 2022 Shaoming Xu, Ankush Khandelwal, Xiang Li, Xiaowei Jia, Licheng Liu, Jared Willard, Rahul Ghosh, Kelly Cutler, Michael Steinbach, Christopher Duffy, John Nieber, Vipin Kumar

To address this issue, we further propose a new strategy which augments a training segment with an initial value of the target variable from the timestep right before the starting of the training segment.

Robust Inverse Framework using Knowledge-guided Self-Supervised Learning: An application to Hydrology

no code implementations14 Sep 2021 Rahul Ghosh, Arvind Renganathan, Kshitij Tayal, Xiang Li, Ankush Khandelwal, Xiaowei Jia, Chris Duffy, John Neiber, Vipin Kumar

Furthermore, we show that KGSSL is relatively more robust to distortion than baseline methods, and outperforms the baseline model by 35\% when plugging in KGSSL inferred characteristics.

Self-Supervised Learning

CalCROP21: A Georeferenced multi-spectral dataset of Satellite Imagery and Crop Labels

no code implementations26 Jul 2021 Rahul Ghosh, Praveen Ravirathinam, Xiaowei Jia, Ankush Khandelwal, David Mulla, Vipin Kumar

Mapping and monitoring crops is a key step towards sustainable intensification of agriculture and addressing global food security.

Semantic Segmentation

Physics Guided Machine Learning Methods for Hydrology

no code implementations2 Dec 2020 Ankush Khandelwal, Shaoming Xu, Xiang Li, Xiaowei Jia, Michael Stienbach, Christopher Duffy, John Nieber, Vipin Kumar

The goal of this work is to incorporate our understanding of physical processes and constraints in hydrology into machine learning algorithms, and thus bridge the performance gap while reducing the need for large amounts of data compared to traditional data-driven approaches.

BIG-bench Machine Learning

Automated Monitoring Cropland Using Remote Sensing Data: Challenges and Opportunities for Machine Learning

no code implementations8 Apr 2019 Xiaowei Jia, Ankush Khandelwal, Vipin Kumar

This paper provides an overview of how recent advances in machine learning and the availability of data from earth observing satellites can dramatically improve our ability to automatically map croplands over long period and over large regions.

BIG-bench Machine Learning

Gender Prediction in English-Hindi Code-Mixed Social Media Content : Corpus and Baseline System

no code implementations14 Jun 2018 Ankush Khandelwal, Sahil Swami, Syed Sarfaraz Akhtar, Manish Shrivastava

In this paper, we analyze the task of author's gender prediction in code-mixed content and present a corpus of English-Hindi texts collected from Twitter which is annotated with author's gender.

Gender Prediction General Classification +4

Humor Detection in English-Hindi Code-Mixed Social Media Content : Corpus and Baseline System

no code implementations LREC 2018 Ankush Khandelwal, Sahil Swami, Syed S. Akhtar, Manish Shrivastava

In this paper, we analyze the task of humor detection in texts and describe a freely available corpus containing English-Hindi code-mixed tweets annotated with humorous(H) or non-humorous(N) tags.

General Classification Humor Detection +3

A Corpus of English-Hindi Code-Mixed Tweets for Sarcasm Detection

2 code implementations30 May 2018 Sahil Swami, Ankush Khandelwal, Vinay Singh, Syed Sarfaraz Akhtar, Manish Shrivastava

Social media platforms like twitter and facebook have be- come two of the largest mediums used by people to express their views to- wards different topics.

Opinion Mining Sarcasm Detection +2

Discovery of Shifting Patterns in Sequence Classification

no code implementations19 Dec 2017 Xiaowei Jia, Ankush Khandelwal, Anuj Karpatne, Vipin Kumar

The experiments demonstrate the superiority of our proposed method in sequence classification performance and in detecting discriminative shifting patterns.

Classification General Classification

ORBIT: Ordering Based Information Transfer Across Space and Time for Global Surface Water Monitoring

no code implementations15 Nov 2017 Ankush Khandelwal, Anuj Karpatne, Vipin Kumar

Various data fusion methods have been proposed in the literature that mainly rely on individual timesteps when both datasets are available to learn a mapping between features values at different resolutions using local relationships between pixels.

Earth Observation

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