Search Results for author: Kevin Wu

Found 12 papers, 2 papers with code

How faithful are RAG models? Quantifying the tug-of-war between RAG and LLMs' internal prior

no code implementations16 Apr 2024 Kevin Wu, Eric Wu, James Zou

However, when the reference document is perturbed with increasing levels of wrong values, the LLM is more likely to recite the incorrect, modified information when its internal prior is weaker but is more resistant when its prior is stronger.

Question Answering

Strong Mixed-Integer Formulations for Transmission Expansion Planning with FACTS Devices

no code implementations3 Oct 2023 Kevin Wu, Mathieu Tanneau, Pascal Van Hentenryck

Transmission Network Expansion Planning (TNEP) problems find the most economical way of expanding a given grid given long-term growth in generation capacity and demand patterns.

DataInf: Efficiently Estimating Data Influence in LoRA-tuned LLMs and Diffusion Models

1 code implementation2 Oct 2023 Yongchan Kwon, Eric Wu, Kevin Wu, James Zou

Quantifying the impact of training data points is crucial for understanding the outputs of machine learning models and for improving the transparency of the AI pipeline.

Influence Approximation

Explaining medical AI performance disparities across sites with confounder Shapley value analysis

no code implementations12 Nov 2021 Eric Wu, Kevin Wu, James Zou

Medical AI algorithms can often experience degraded performance when evaluated on previously unseen sites.

Synthesizing lesions using contextual GANs improves breast cancer classification on mammograms

no code implementations MIDL 2019 Eric Wu, Kevin Wu, William Lotter

Breast cancer classification in mammography exemplifies these challenges, with a malignancy rate of around 0. 5% in a screening population, which is compounded by the relatively small size of lesions (~1% of the image) in malignant cases.

Data Augmentation General Classification +1

Validation of a deep learning mammography model in a population with low screening rates

no code implementations1 Nov 2019 Kevin Wu, Eric Wu, Yaping Wu, Hongna Tan, Greg Sorensen, Meiyun Wang, Bill Lotter

We specifically explore how a deep learning algorithm trained on screening mammograms from the US and UK generalizes to mammograms collected at a hospital in China, where screening is not widely implemented.

Breast Cancer Detection

Mixed Membership Recurrent Neural Networks

no code implementations23 Dec 2018 Ghazal Fazelnia, Mark Ibrahim, Ceena Modarres, Kevin Wu, John Paisley

Models for sequential data such as the recurrent neural network (RNN) often implicitly model a sequence as having a fixed time interval between observations and do not account for group-level effects when multiple sequences are observed.

Dynamic Topic Modeling

Conditional Infilling GANs for Data Augmentation in Mammogram Classification

1 code implementation21 Jul 2018 Eric Wu, Kevin Wu, David Cox, William Lotter

Deep learning approaches to breast cancer detection in mammograms have recently shown promising results.

Breast Cancer Detection Classification +2

Learning Scene Gist with Convolutional Neural Networks to Improve Object Recognition

no code implementations6 Mar 2018 Kevin Wu, Eric Wu, Gabriel Kreiman

We use a biologically inspired two-part convolutional neural network ('GistNet') that models the fovea and periphery to provide a proof-of-principle demonstration that computational object recognition can significantly benefit from the gist of the scene as contextual information.

Object Object Recognition +1

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