no code implementations • 2 Sep 2023 • Jiaxi Ying, Xi Han, Rui Zhou, Xiwen Wang, Hing Cheung So
We tackle the network topology inference problem by utilizing Laplacian constrained Gaussian graphical models, which recast the task as estimating a precision matrix in the form of a graph Laplacian.
no code implementations • 14 Dec 2022 • Shengjie Xiu, Xiwen Wang, Daniel P. Palomar
The mean and variance of portfolio returns are the standard quantities to measure the expected return and risk of a portfolio.
1 code implementation • 6 Jun 2022 • Xiwen Wang, Rui Zhou, Jiaxi Ying, Daniel P. Palomar
Initially, profit and risk were measured by the first two moments of the portfolio's return, a. k. a.