Search Results for author: Haining Li

Found 4 papers, 1 papers with code

Estimation of stellar atmospheric parameters from LAMOST DR8 low-resolution spectra with 20$\leq$SNR$<$30

no code implementations13 Apr 2022 Xiangru Li, Zhu Wang, Si Zeng, Caixiu Liao, Bing Du, X. Kong, Haining Li

Firstly, this scheme detected stellar atmospheric parameter-sensitive features from spectra by the Least Absolute Shrinkage and Selection Operator (LASSO), rejected ineffective data components and irrelevant data.

Trustworthy Long-Tailed Classification

2 code implementations CVPR 2022 Bolian Li, Zongbo Han, Haining Li, Huazhu Fu, Changqing Zhang

To address these issues, we propose a Trustworthy Long-tailed Classification (TLC) method to jointly conduct classification and uncertainty estimation to identify hard samples in a multi-expert framework.

Classification Long-tail Learning +1

An Efficient Algorithm for Deep Stochastic Contextual Bandits

no code implementations12 Apr 2021 Tan Zhu, Guannan Liang, Chunjiang Zhu, Haining Li, Jinbo Bi

In this work, we formulate the SCB that uses a DNN reward function as a non-convex stochastic optimization problem, and design a stage-wise stochastic gradient descent algorithm to optimize the problem and determine the action policy.

Multi-Armed Bandits Stochastic Optimization

High-α-Metal-Rich stars in the LAMOST-MRS survey and its connection with the galactic bulge

no code implementations11 Feb 2021 Haopeng Zhang, Yuqin Chen, Gang Zhao, Jingkun Zhao, Xilong Liang, Haining Li, Yaqian Wu, Ali Luo, Rui Wang

A tentative interpretation of this special group is that its stars were formed in the X-shaped bar/bulge region, close to its corotation radius, where radial migration is the most intense, and brings them to present locations at 9 kpc and beyond.

Astrophysics of Galaxies Solar and Stellar Astrophysics

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