no code implementations • 15 May 2023 • Yushan Liu, Bailan He, Marcel Hildebrandt, Maximilian Buchner, Daniela Inzko, Roger Wernert, Emanuel Weigel, Dagmar Beyer, Martin Berbalk, Volker Tresp
Global crises and regulatory developments require increased supply chain transparency and resilience.
1 code implementation • 3 Jun 2022 • Tong Liu, Yushan Liu, Marcel Hildebrandt, Mitchell Joblin, Hang Li, Volker Tresp
We investigate the calibration of graph neural networks for node classification, study the effect of existing post-processing calibration methods, and analyze the influence of model capacity, graph density, and a new loss function on calibration.
1 code implementation • 15 Dec 2021 • Yushan Liu, Yunpu Ma, Marcel Hildebrandt, Mitchell Joblin, Volker Tresp
Conventional static knowledge graphs model entities in relational data as nodes, connected by edges of specific relation types.
no code implementations • 19 Jun 2021 • Yushan Liu, Shun Zhang, Feifei Gao, Jie Tang, Octavia A. Dobre
Channel estimation is challenging for the reconfigurable intelligence surface (RIS) assisted millimeter wave (mmWave) communications.
1 code implementation • 18 Mar 2021 • Yushan Liu, Marcel Hildebrandt, Mitchell Joblin, Martin Ringsquandl, Rime Raissouni, Volker Tresp
Biomedical knowledge graphs permit an integrative computational approach to reasoning about biological systems.
no code implementations • 25 Feb 2021 • Shun Zhang, Yushan Liu, Feifei Gao, Chengwen Xing, Jianping An, Octavia A. Dobre
With the depletion of spectrum, wireless communication systems turn to exploit large antenna arrays to achieve the degree of freedom in space domain, such as millimeter wave massive multi-input multioutput (MIMO), reconfigurable intelligent surface assisted communications and cell-free massive MIMO.
Information Theory Signal Processing Information Theory
1 code implementation • 10 Jul 2020 • Yushan Liu, Markus M. Geipel, Christoph Tietz, Florian Buettner
Diagnosing diseases such as leukemia or anemia requires reliable counts of blood cells.
no code implementations • 10 Jul 2020 • Yushan Liu, Marcel Hildebrandt, Mitchell Joblin, Martin Ringsquandl, Volker Tresp
The graph structure of biomedical data differs from those in typical knowledge graph benchmark tasks.
1 code implementation • 2 Jul 2020 • Zhiliang Wu, Yinchong Yang, Yunpu Ma, Yushan Liu, Rui Zhao, Michael Moor, Volker Tresp
Randomized controlled trials typically analyze the effectiveness of treatments with the goal of making treatment recommendations for patient subgroups.
no code implementations • 4 Jan 2019 • Xurong Li, Shouling Ji, Meng Han, Juntao Ji, Zhenyu Ren, Yushan Liu, Chunming Wu
Through the comprehensive evaluations on five major cloud platforms: AWS, Azure, Google Cloud, Baidu Cloud, and Alibaba Cloud, we demonstrate that our image processing based attacks can reach a success rate of approximately 100%, and the semantic segmentation based attacks have a success rate over 90% among different detection services, such as violence, politician, and pornography detection.