Analysis and Optimization of Service Delay for Multi-quality Videos in Multi-tier Heterogeneous Network with Random Caching

no code implementations • 21 Jul 2020 • Xuewei Zhang, Tiejun Lv, Yuan Ren, Wei Ni, Norman C. Beaulieu

Aiming to minimize service delay, we propose a new random caching scheme in device-to-device (D2D)-assisted heterogeneous network.

Higher-order topological semimetal in acoustic crystals

no code implementations • 8 Jul 2020 • Qiang Wei, Xuewei Zhang, Weiyin Deng, Jiuyang Lu, Xueqin Huang, Mou Yan, Gang Chen, Zhengyou Liu, Suotang Jia

Here we report the realization of a second-order topological Weyl semimetal in a 3D-printed acoustic crystal, which possesses Weyl points in 3D momentum space, 2D Fermi arc states on surfaces and 1D gapless states on hinges.

Mesoscale and Nanoscale Physics

Deep Speaker: an End-to-End Neural Speaker Embedding System

15 code implementations • 5 May 2017 • Chao Li, Xiaokong Ma, Bing Jiang, Xiangang Li, Xuewei Zhang, Xiao Liu, Ying Cao, Ajay Kannan, Zhenyao Zhu

We present Deep Speaker, a neural speaker embedding system that maps utterances to a hypersphere where speaker similarity is measured by cosine similarity.

Clustering Speaker Identification +1

THCHS-30 : A Free Chinese Speech Corpus

1 code implementation • 7 Dec 2015 • Dong Wang, Xuewei Zhang

Speech data is crucially important for speech recognition research.

speech-recognition Speech Recognition