Search Results for author: Yu Ma

Found 7 papers, 1 papers with code

Towards Stable Machine Learning Model Retraining via Slowly Varying Sequences

no code implementations28 Mar 2024 Dimitris Bertsimas, Vassilis Digalakis Jr, Yu Ma, Phevos Paschalidis

In this study, we develop a mixed integer optimization algorithm that holistically considers the problem of retraining machine learning models across different data batch updates.

Feature Importance

SNE-RoadSegV2: Advancing Heterogeneous Feature Fusion and Fallibility Awareness for Freespace Detection

no code implementations29 Feb 2024 Yi Feng, Yu Ma, Qijun Chen, Ioannis Pitas, Rui Fan

Feature-fusion networks with duplex encoders have proven to be an effective technique to solve the freespace detection problem.

Computational Efficiency

Robust Regression over Averaged Uncertainty

no code implementations12 Nov 2023 Dimitris Bertsimas, Yu Ma

We propose a new formulation of robust regression by integrating all realizations of the uncertainty set and taking an averaged approach to obtain the optimal solution for the ordinary least-squared regression problem.

regression

TabText: A Flexible and Contextual Approach to Tabular Data Representation

no code implementations21 Jun 2022 Kimberly Villalobos Carballo, Liangyuan Na, Yu Ma, Léonard Boussioux, Cynthia Zeng, Luis R. Soenksen, Dimitris Bertsimas

We show that 1) applying our TabText framework enables the generation of high-performing and simple machine learning baseline models with minimal data pre-processing, and 2) augmenting pre-processed tabular data with TabText representations improves the average and worst-case AUC performance of standard machine learning models by as much as 6%.

Integrated multimodal artificial intelligence framework for healthcare applications

1 code implementation25 Feb 2022 Luis R. Soenksen, Yu Ma, Cynthia Zeng, Leonard D. J. Boussioux, Kimberly Villalobos Carballo, Liangyuan Na, Holly M. Wiberg, Michael L. Li, Ignacio Fuentes, Dimitris Bertsimas

The generalizable properties and flexibility of our Holistic AI in Medicine (HAIM) framework could offer a promising pathway for future multimodal predictive systems in clinical and operational healthcare settings.

Time Series Analysis

Augmented LiDAR Simulator for Autonomous Driving

no code implementations17 Nov 2018 Jin Fang, Dingfu Zhou, Feilong Yan, Tongtong Zhao, Feihu Zhang, Yu Ma, Liang Wang, Ruigang Yang

Instead, we can simply deploy a vehicle with a LiDAR scanner to sweep the street of interests to obtain the background point cloud, based on which annotated point cloud can be automatically generated.

Autonomous Driving

Exploration of Numerical Precision in Deep Neural Networks

no code implementations3 May 2018 Zhaoqi Li, Yu Ma, Catalina Vajiac, Yunkai Zhang

Reduced numerical precision is a common technique to reduce computational cost in many Deep Neural Networks (DNNs).

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