Search Results for author: Jeffrey Zhang

Found 14 papers, 3 papers with code

Me LLaMA: Foundation Large Language Models for Medical Applications

1 code implementation20 Feb 2024 Qianqian Xie, Qingyu Chen, Aokun Chen, Cheng Peng, Yan Hu, Fongci Lin, Xueqing Peng, Jimin Huang, Jeffrey Zhang, Vipina Keloth, Xinyu Zhou, Huan He, Lucila Ohno-Machado, Yonghui Wu, Hua Xu, Jiang Bian

In response to this challenge, this study introduces Me-LLaMA, a novel medical LLM family that includes foundation models - Me-LLaMA 13/70B, along with their chat-enhanced versions - Me-LLaMA 13/70B-chat, developed through continual pre-training and instruction tuning of LLaMA2 using large medical datasets.

Few-Shot Learning

Preserving Image Properties Through Initializations in Diffusion Models

no code implementations4 Jan 2024 Jeffrey Zhang, Shao-Yu Chang, Kedan Li, David Forsyth

The usual practice of training the denoiser with a very noisy image and starting inference with a sample of pure noise leads to inconsistent generated images during inference.

Higher-Order Newton Methods with Polynomial Work per Iteration

no code implementations10 Nov 2023 Amir Ali Ahmadi, Abraar Chaudhry, Jeffrey Zhang

At each step, our $d^{\text{th}}$-order method uses semidefinite programming to construct and minimize a sum of squares-convex approximation to the $d^{\text{th}}$-order Taylor expansion of the function we wish to minimize.

Wearing the Same Outfit in Different Ways -- A Controllable Virtual Try-on Method

no code implementations29 Nov 2022 Kedan Li, Jeffrey Zhang, Shao-Yu Chang, David Forsyth

However, no current method can both control how the garment is worn -- including tuck or untuck, opened or closed, high or low on the waist, etc.. -- and generate realistic images that accurately preserve the properties of the original garment.

Virtual Try-on

Toward Accurate and Realistic Outfits Visualization with Attention to Details

no code implementations CVPR 2021 Kedan Li, Min Jin Chong, Jeffrey Zhang, Jingen Liu

Prior works produce images that are filled with artifacts and fail to capture important visual details necessary for commercial applications.

Image Generation Virtual Try-on

Dexterous Manipulation Primitives for the Real Robot Challenge

1 code implementation27 Jan 2021 Claire Chen, Krishnan Srinivasan, Jeffrey Zhang, Junwu Zhang

We use model-based trajectory optimization and control to plan and execute these primitives.

Robotics

Complexity Aspects of Fundamental Questions in Polynomial Optimization

no code implementations27 Aug 2020 Jeffrey Zhang

These include the questions of (i) finding a local minimum, (ii) testing local minimality of a point, and (iii) deciding attainment of the optimal value.

Complexity aspects of local minima and related notions

no code implementations14 Aug 2020 Amir Ali Ahmadi, Jeffrey Zhang

We consider the notions of (i) critical points, (ii) second-order points, (iii) local minima, and (iv) strict local minima for multivariate polynomials.

On the complexity of finding a local minimizer of a quadratic function over a polytope

no code implementations12 Aug 2020 Amir Ali Ahmadi, Jeffrey Zhang

We show that unless P=NP, there cannot be a polynomial-time algorithm that finds a point within Euclidean distance $c^n$ (for any constant $c \ge 0$) of a local minimizer of an $n$-variate quadratic function over a polytope.

Memory-Efficient Incremental Learning Through Feature Adaptation

no code implementations ECCV 2020 Ahmet Iscen, Jeffrey Zhang, Svetlana Lazebnik, Cordelia Schmid

We assume that the model is updated incrementally for new classes as new data becomes available sequentially. This requires adapting the previously stored feature vectors to the updated feature space without having access to the corresponding original training images.

Incremental Learning

Generalized Latent Variable Recovery for Generative Adversarial Networks

no code implementations9 Oct 2018 Nicholas Egan, Jeffrey Zhang, Kevin Shen

The Generator of a Generative Adversarial Network (GAN) is trained to transform latent vectors drawn from a prior distribution into realistic looking photos.

Generative Adversarial Network

Automated and Interpretable Patient ECG Profiles for Disease Detection, Tracking, and Discovery

1 code implementation6 Jul 2018 Geoffrey H. Tison, Jeffrey Zhang, Francesca N. Delling, Rahul C. Deo

We identified 36, 186 ECGs from the UCSF database that were 1) in normal sinus rhythm and 2) would enable training of specific models for estimation of cardiac structure or function or detection of disease.

Binary Classification Decision Making

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