Digital Twin Brain: a simulation and assimilation platform for whole human brain

no code implementations • 2 Aug 2023 • Wenlian Lu, Longbin Zeng, Xin Du, Wenyong Zhang, Shitong Xiang, Huarui Wang, Jiexiang Wang, Mingda Ji, Yubo Hou, Minglong Wang, Yuhao Liu, Zhongyu Chen, Qibao Zheng, Ningsheng Xu, Jianfeng Feng

In comparison to most brain simulations with a homogeneous global structure, we highlight that the sparseness, couplingness and heterogeneity in the sMRI, DTI and PET data of the brain has an essential impact on the efficiency of brain simulation, which is proved from the scaling experiments that the DTB of human brain simulation is communication-intensive and memory-access intensive computing systems rather than computation-intensive.

A Two-Step Framework for Arbitrage-Free Prediction of the Implied Volatility Surface

no code implementations • 14 Jun 2021 • Wenyong Zhang, Lingfei Li, Gongqiu Zhang

We propose a two-step framework for predicting the implied volatility surface over time without static arbitrage.

Time Series Time Series Analysis