Search Results for author: Jiali Xu

Found 4 papers, 0 papers with code

Two-dimensional Multi-fiber Spectrum Image Correction Based on Machine Learning Techniques

no code implementations16 Feb 2020 Jiali Xu, Qian Yin, Ping Guo, Xin Zheng

At the same time, the spectrum extraction results before and after calibration are compared, results show the characteristics of the extracted one-dimensional waveform are more close to an ideal optics system, and the PSF of the corrected object spectrum image estimated by the blind deconvolution method is nearly central symmetry, which indicates that our proposed method can significantly reduce the complexity of spectrum extraction and improve extraction accuracy.

BIG-bench Machine Learning

A Note on Portfolio Optimization with Quadratic Transaction Costs

no code implementations6 Jan 2020 Pierre Chen, Edmond Lezmi, Thierry Roncalli, Jiali Xu

In this short note, we consider mean-variance optimized portfolios with transaction costs.

Portfolio Optimization

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