Search Results for author: Teddy Koker

Found 7 papers, 5 papers with code

U-Noise: Learnable Noise Masks for Interpretable Image Segmentation

1 code implementation14 Jan 2021 Teddy Koker, FatemehSadat Mireshghallah, Tom Titcombe, Georgios Kaissis

Deep Neural Networks (DNNs) are widely used for decision making in a myriad of critical applications, ranging from medical to societal and even judicial.

Decision Making Image Segmentation +2

AASAE: Augmentation-Augmented Stochastic Autoencoders

1 code implementation26 Jul 2021 William Falcon, Ananya Harsh Jha, Teddy Koker, Kyunghyun Cho

We empirically evaluate the proposed AASAE on image classification, similar to how recent contrastive and non-contrastive learning algorithms have been evaluated.

Contrastive Learning Data Augmentation +2

AAVAE: Augmentation-Augmented Variational Autoencoders

no code implementations29 Sep 2021 William Alejandro Falcon, Ananya Harsh Jha, Teddy Koker, Kyunghyun Cho

We empirically evaluate the proposed AAVAE on image classification, similar to how recent contrastive and non-contrastive learning algorithms have been evaluated.

Contrastive Learning Data Augmentation +2

Graph Contrastive Learning for Materials

no code implementations24 Nov 2022 Teddy Koker, Keegan Quigley, Will Spaeth, Nathan C. Frey, Lin Li

By leveraging a series of material-specific transformations, we introduce CrystalCLR, a framework for constrastive learning of representations with crystal graph neural networks.

Contrastive Learning

Domain Adaptation for Time Series Under Feature and Label Shifts

1 code implementation6 Feb 2023 Huan He, Owen Queen, Teddy Koker, Consuelo Cuevas, Theodoros Tsiligkaridis, Marinka Zitnik

Additionally, the label distributions of tasks in the source and target domains can differ significantly, posing difficulties in addressing label shifts and recognizing labels unique to the target domain.

Time Series Time Series Analysis +3

Higher-Order Equivariant Neural Networks for Charge Density Prediction in Materials

1 code implementation8 Dec 2023 Teddy Koker, Keegan Quigley, Eric Taw, Kevin Tibbetts, Lin Li

The calculation of electron density distribution using density functional theory (DFT) in materials and molecules is central to the study of their quantum and macro-scale properties, yet accurate and efficient calculation remains a long-standing challenge in the field of material science.

UniTS: Building a Unified Time Series Model

1 code implementation29 Feb 2024 ShangHua Gao, Teddy Koker, Owen Queen, Thomas Hartvigsen, Theodoros Tsiligkaridis, Marinka Zitnik

However, current foundation models apply to sequence data but not to time series, which present unique challenges due to the inherent diverse and multidomain time series datasets, diverging task specifications across forecasting, classification and other types of tasks, and the apparent need for task-specialized models.

Anomaly Detection Imputation +1

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