Search Results for author: Da Yan

Found 9 papers, 5 papers with code

EvaNet: Elevation-Guided Flood Extent Mapping on Earth Imagery

1 code implementation27 Apr 2024 Mirza Tanzim Sami, Da Yan, Saugat Adhikari, Lyuheng Yuan, Jiao Han, Zhe Jiang, Jalal Khalil, Yang Zhou

Accurate and timely mapping of flood extent from high-resolution satellite imagery plays a crucial role in disaster management such as damage assessment and relief activities.


Successfully Applying Lottery Ticket Hypothesis to Diffusion Model

1 code implementation28 Oct 2023 Chao Jiang, Bo Hui, Bohan Liu, Da Yan

Therefore, we propose to find the winning ticket with varying sparsity along different layers in the model.


Towards Understanding Sycophancy in Language Models

1 code implementation20 Oct 2023 Mrinank Sharma, Meg Tong, Tomasz Korbak, David Duvenaud, Amanda Askell, Samuel R. Bowman, Newton Cheng, Esin Durmus, Zac Hatfield-Dodds, Scott R. Johnston, Shauna Kravec, Timothy Maxwell, Sam McCandlish, Kamal Ndousse, Oliver Rausch, Nicholas Schiefer, Da Yan, Miranda Zhang, Ethan Perez

Overall, our results indicate that sycophancy is a general behavior of state-of-the-art AI assistants, likely driven in part by human preference judgments favoring sycophantic responses.

Text Generation

Rethinking Graph Lottery Tickets: Graph Sparsity Matters

no code implementations3 May 2023 Bo Hui, Da Yan, Xiaolong Ma, Wei-Shinn Ku

Therefore, we propose two techniques to improve GNN performance when the graph sparsity is high.

Reinforcement Learning Enhanced Weighted Sampling for Accurate Subgraph Counting on Fully Dynamic Graph Streams

1 code implementation13 Nov 2022 Kaixin Wang, Cheng Long, Da Yan, Jie Zhang, H. V. Jagadish

Specifically, we propose a weighted sampling algorithm called WSD for estimating the subgraph count in a fully dynamic graph stream, which samples the edges based on their weights that indicate their importance and reflect their properties.

Subgraph Counting

Deep Neural Network for 3D Surface Segmentation based on Contour Tree Hierarchy

no code implementations25 Aug 2020 Wenchong He, Arpan Man Sainju, Zhe Jiang, Da Yan

In contrast, we propose to represent surface topological structure by a contour tree skeleton, which is a polytree capturing the evolution of surface contours at different elevation levels.

Image Segmentation Semantic Segmentation

Spatial Classification With Limited Observations Based On Physics-Aware Structural Constraint

no code implementations25 Aug 2020 Arpan Man Sainju, Wenchong He, Zhe Jiang, Da Yan, Haiquan Chen

These methods, however, assume that incomplete feature observations only happen on a small subset of samples, and thus cannot solve problems where the vast majority of samples have missing feature observations.

General Classification Imputation

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