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Št. zadetkov: 7
Perception Preserving Projections
Chao Zhang
Video in druga učna gradiva
Oznake: computer science;computer vision;machine learning
Linear projection for reducing data dimensionality is a common practice in various data processing applications. Among the existing projection methods, Principal Component Analysis (PCA) is arguably the most popular one. Standard PCA used in image preprocessing pursues the projection directions b ...
Leto: 2013 Vir: videolectures.net
Improving the Modified Nyström Method Using Spectral Shifting
Chao Zhang
Video in druga učna gradiva
Oznake: computer science;data mining;knowledge extraction
The Nyström method is an efficient approach to enabling large-scale kernel methods. The Nyström method generates a fast approximation to any large-scale symmetric positive semidefinete (SPSD) matrix using only a few columns of the SPSD matrix. However, since the Nyström approximation is low-rank, wh ...
Leto: 2014 Vir: videolectures.net
GMove: Group-Level Mobility Modeling using Geo-Tagged Social Media
Chao Zhang
Video in druga učna gradiva
Oznake: computer science;data science
Understanding human mobility is of great importance to various applications, such as urban planning, traffic scheduling, and location prediction. While there has been fruitful research on modeling human mobility using tracking data (e.g., GPS traces), the recent growth of geo-tagged social media (Ge ...
Leto: 2016 Vir: videolectures.net
TrioVecEvent: Embedding-Based Online Local Event Detection in Geo-Tagged Tweet Streams
Chao Zhang
Video in druga učna gradiva
Oznake: computer science;data science
Detecting local events (e.g., protest, disaster) at their onsets is an important task for a wide spectrum of applications, ranging from disaster control to crime monitoring and place recommendation. Recent years have witnessed growing interest in leveraging geo-tagged tweet streams for online local ...
Leto: 2017 Vir: videolectures.net
Influence of voltage and current on the arc shape in cable-type wire TIG-MIG hybrid welding
Chao Zhang, Qingxian Hu, Xiaoli Wang, Zhuang Dong, Daozhong Du
Izvirni znanstveni članek
Oznake: tungsten inert gas welding;metal inert gas welding;cable-type wire;arc shape;voltage;current;
Influence of voltage and current on the arc shape in cable-type wire TIG-MIG hybrid welding
Leto: 2022 Vir: Inštitut za kovinske materiale in tehnologije (IMT)
Stable seawater oxidation with a self-healing oxygen-evolving catalyst
Xiaojian Zhang, Chao Feng, Zeyu Fan, Beibei Zhang, Yequan Xiao, Andraž Mavrič, N. Pastukhova, Matjaž Valant, Yi-Fan Han, Yanbo Li
Izvirni znanstveni članek
Oznake: chemistry;electrocatalysis;seawater oxidation;oxygen evolution reaction;
Direct seawater electrolysis is key to massive hydrogen fuel production without the depletion of precious freshwater resources and the need for high-purity electrolytes. However, the presence of high-concentration chloride ions (Cl−) and alkaline-earth metal ions (Mg2+, Ca2+) poses great challenges ...
Leto: 2023 Vir: Repozitorij Univerze v Novi Gorici (RUNG)
Designing atomic interface in Sb[sub]2S[sub]3/CdS heterojunction for efficient solar water splitting
Minji Yang, Zeyu Fan, Jinyan Du, Chao Feng, Ronghua Li, Beibei Zhang, N. Pastukhova, Matjaž Valant, Matjaž Finšgar, Andraž Mavrič, Yanbo Li
Izvirni znanstveni članek
Oznake: alumina;defect passivation;interface engineering;photoelectrochemical water splitting;
In the emerging Sb2S3‐based solar energy conversion devices, a CdS buffer layer prepared by chemical bath deposition is commonly used to improve the separation of photogenerated electron‐hole pairs. However, the cation diffusion at the Sb2S3/CdS interface induces detrimental defects but is often ove ...
Leto: 2024 Vir: Repozitorij Univerze v Novi Gorici (RUNG)
Št. zadetkov: 7
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