no code implementations • 10 Jun 2019 • Longfei Chen, Yuichi Nakamura, Kazuaki Kondo
With respect to machine operation tasks, the experiences from different skill level operators, especially novices, can provide worthy understanding about the manner in which they perceive the operational environment and formulate knowledge to deal with various operation situations.
no code implementations • 19 Sep 2020 • Shengdong Zhang, Shihui You, Longfei Chen, Xiaofei Liu
The geometric, physical and interunit characteristics of the tunnel subjected to explosive loading are extracted, and the nonlinear mapping relationship between the topological quantity of persistent homology, and the failure characteristics of the surrounding rock is established, and the results of the intelligent description of the failure characteristics of the tunnel are obtained.
no code implementations • 29 Sep 2020 • Shengdong Zhang, Shihui You, Longfei Chen, Xiaofei Liu
Using software UDEC to simulate the instability failure process of slope under seismic load, studing the dynamic response of slope failure, obtaining the deformation characteristics and displacement cloud map of slope, then analyzing the instability state of slope by using the theory of persistent homology, generates bar code map and extracts the topological characteristics of slope from bar code map.
Geophysics Computational Engineering, Finance, and Science
no code implementations • 18 Sep 2023 • Laixin Xie, Yang Ouyang, Longfei Chen, Ziming Wu, Quan Li
These approaches rely on the observed data to estimate the missing values and therefore encounter three main shortcomings in imputation, including the need for different imputation methods for various missing data mechanisms, heavy dependence on the assumption of data distribution, and potential introduction of bias.
no code implementations • 3 Nov 2023 • Longfei Chen, Robert B. Fisher
A new application for real-time monitoring of the lack of movement in older adults' own homes is proposed, aiming to support people's lives and independence in their later years.