Search Results for author: Jiasi Chen

Found 7 papers, 1 papers with code

TREACLE: Thrifty Reasoning via Context-Aware LLM and Prompt Selection

no code implementations17 Apr 2024 Xuechen Zhang, Zijian Huang, Ege Onur Taga, Carlee Joe-Wong, Samet Oymak, Jiasi Chen

Recent successes in natural language processing have led to the proliferation of large language models (LLMs) by multiple providers.

GSM8K Navigate

Class-attribute Priors: Adapting Optimization to Heterogeneity and Fairness Objective

no code implementations25 Jan 2024 Xuechen Zhang, Mingchen Li, Jiasi Chen, Christos Thrampoulidis, Samet Oymak

Confirming this, under a gaussian mixture setting, we show that the optimal SVM classifier for balanced accuracy needs to be adaptive to the class attributes.

Attribute Fairness

FedYolo: Augmenting Federated Learning with Pretrained Transformers

no code implementations10 Jul 2023 Xuechen Zhang, Mingchen Li, Xiangyu Chang, Jiasi Chen, Amit K. Roy-Chowdhury, Ananda Theertha Suresh, Samet Oymak

These insights on scale and modularity motivate a new federated learning approach we call "You Only Load Once" (FedYolo): The clients load a full PTF model once and all future updates are accomplished through communication-efficient modules with limited catastrophic-forgetting, where each task is assigned to its own module.

Federated Learning

AutoBalance: Optimized Loss Functions for Imbalanced Data

1 code implementation NeurIPS 2021 Mingchen Li, Xuechen Zhang, Christos Thrampoulidis, Jiasi Chen, Samet Oymak

Our experimental findings are complemented with theoretical insights on loss function design and the benefits of train-validation split.

Data Augmentation Fairness

Post-hoc Models for Performance Estimation of Machine Learning Inference

no code implementations6 Oct 2021 Xuechen Zhang, Samet Oymak, Jiasi Chen

Estimating how well a machine learning model performs during inference is critical in a variety of scenarios (for example, to quantify uncertainty, or to choose from a library of available models).

BIG-bench Machine Learning Feature Engineering +3

On the Role of Dataset Quality and Heterogeneity in Model Confidence

no code implementations23 Feb 2020 Yuan Zhao, Jiasi Chen, Samet Oymak

We demonstrate that this leads to heterogenous confidence/accuracy behavior in the test data and is poorly handled by the standard calibration algorithms.

Learning Feature Nonlinearities with Non-Convex Regularized Binned Regression

no code implementations20 May 2017 Samet Oymak, Mehrdad Mahdavi, Jiasi Chen

Evaluations on synthetic and real datasets demonstrate that algorithm is competitive with current state-of-the-art and accurately learns feature nonlinearities.

regression

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