Giant $c$-axis nonlinear anomalous Hall effect in T$_d$-MoTe$_2$ and WTe$_2$

no code implementations • 12 Mar 2021 • Archana Tiwari, Fangchu Chen, Shazhou Zhong, Elizabeth Drueke, Jahyun Koo, Austin Kaczmarek, Cong Xiao, Jingjing Gao, Xuan Luo, Qian Niu, Yuping Sun, Binghai Yan, Liuyan Zhao, Adam W. Tsen

While the anomalous Hall effect can manifest even without an external magnetic field, time reversal symmetry is nonetheless still broken by the internal magnetization of the sample.

Mesoscale and Nanoscale Physics

Sparse Coding for Classification via Discrimination Ensemble

no code implementations • CVPR 2016 • Yuhui Quan, Yong Xu, Yuping Sun, Yan Huang, Hui Ji

Discriminative sparse coding has emerged as a promising technique in image analysis and recognition, which couples the process of classifier training and the process of dictionary learning for improving the discriminability of sparse codes.

Classification Dictionary Learning +1

Lacunarity Analysis on Image Patterns for Texture Classification

no code implementations • CVPR 2014 • Yuhui Quan, Yong Xu, Yuping Sun, Yu Luo

Based on the concept of lacunarity in fractal geometry, we developed a statistical approach to texture description, which yields highly discriminative feature with strong robustness to a wide range of transformations, including photometric changes and geometric changes.

Classification General Classification +1