Liu Ren

147 papers A* 30A 7B 1C 2Misc 1Journal 93Unranked 13
YearRankTypeTitle / Venue / Authors
2026 J jnl
CoRR
Cho-Ying Wu, Zixun Huang, Xinyu Huang, Liu Ren
2026 J jnl
CoRR
Yiren Lu, Xin Ye, Burhaneddin Yaman, Jingru Luo, Zhexiao Xiong, Liu Ren, Yu Yin
2026 J jnl
CoRR
Girish Chandar Ganesan, Yuliang Guo, Liu Ren, Xiaoming Liu
2026 J jnl
CoRR
Zhexiao Xiong, Xin Ye, Burhaneddin Yaman, Sheng Cheng, Yiren Lu, Jingru Luo, Nathan Jacobs, Liu Ren
2026 J jnl
Inf. Syst.
Jie Jeff Xu, Saahir Dhanani, Jorge Piazentin Ono, Wenbin He, Liu Ren, Kexin Rong
2025 J jnl
CoRR
Zixun Huang, Cho-Ying Wu, Yuliang Guo, Xinyu Huang, Liu Ren
2025 J jnl
CoRR
Yunsheng Ma, Burhaneddin Yaman, Xin Ye, Mahmut Yurt, Jingru Luo, Abhirup Mallik, Ziran Wang, Liu Ren
2025 A* conf
ICLR
Hang Wang, Xin Ye, Feng Tao, Chenbin Pan, Abhirup Mallik, Burhaneddin Yaman, Liu Ren, Junshan Zhang
2025 J jnl
CoRR
Hang Wang, Xin Ye, Feng Tao, Chenbin Pan, Abhirup Mallik, Burhaneddin Yaman, Liu Ren, Junshan Zhang
2025 J jnl
IEEE Trans. Vis. Comput. Graph.
Xiwei Xuan, Jorge Piazentin Ono, Liang Gou, Kwan-Liu Ma, Liu Ren
2025 A* conf
CVPR
Xin Ye, Burhaneddin Yaman, Sheng Cheng, Feng Tao, Abhirup Mallik, Liu Ren
2025 J jnl
CoRR
Xin Ye, Burhaneddin Yaman, Sheng Cheng, Feng Tao, Abhirup Mallik, Liu Ren
2025 J jnl
CoRR
Abhinav Kumar, Yuliang Guo, Zhihao Zhang, Xinyu Huang, Liu Ren, Xiaoming Liu
2025 J jnl
CoRR
Chenbin Pan, Wenbin He, Zhengzhong Tu, Liu Ren
2025 A* conf
CVPR
Yuliang Guo, Sparsh Garg, S. Mahdi H. Miangoleh, Xinyu Huang, Liu Ren
2025 J jnl
CoRR
Yuliang Guo, Sparsh Garg, S. Mahdi H. Miangoleh, Xinyu Huang, Liu Ren
2025 J jnl
CoRR
Zixuan Wu, Hengyuan Zhang, Ting-Hsuan Chen, Yuliang Guo, David Paz, Xinyu Huang, Liu Ren
2025 A* conf
ICRA
Kaiyuan Chen, Nan Tian, Christian Juette, Tianshuang Qiu, Liu Ren, John Kubiatowicz, Ken Goldberg
2025 J jnl
CoRR
Yuping Wang, Shuo Xing, Cui Can, Renjie Li, Hongyuan Hua, Kexin Tian, Zhaobin Mo, Xiangbo Gao, Keshu Wu, Sulong Zhou, Hengxu You, Juntong Peng, Junge Zhang, Zehao Wang, Rui Song, Mingxuan Yan, Walter Zimmer, Xingcheng Zhou, Peiran Li, Zhaohan Lu, Chia-Ju Chen, Yue Huang, Ryan A. Rossi, Lichao Sun, Hongkai Yu, Zhiwen Fan, Hao (Frank) Yang, Yuhao Kang, Ross Greer, Chenxi Liu, Eun Hak Lee, Xuan Di, Xinyue Ye, Liu Ren, Alois Knoll, Xiaopeng Li, Shuiwang Ji, Masayoshi Tomizuka, Marco Pavone, Laurence Tianruo Yang, Jing Du, Ming-Hsuan Yang, Hua Wei, Ziran Wang, Yang Zhou, Jiachen Li, Zhengzhong Tu
2025 J jnl
Comput. Graph. Forum
Juntong Chen, Jiang Wu, Jiajing Guo, Vikram Mohanty, Xueming Li, Jorge Piazentin Ono, Wenbin He, Liu Ren, Dongyu Liu
2025 J jnl
CoRR
Juntong Chen, Jiang Wu, Jiajing Guo, Vikram Mohanty, Xueming Li, Jorge Piazentin Ono, Wenbin He, Liu Ren, Dongyu Liu
2025 J jnl
CoRR
Shuangyu Xie, Kaiyuan Chen, Wenjing Chen, Chengyuan Qian, Christian Juette, Liu Ren, Dezhen Song, Ken Goldberg
2025 A conf
WACV
Xin Ye, Feng Tao, Abhirup Mallik, Burhaneddin Yaman, Liu Ren
2025 J jnl
CoRR
Mahmut Yurt, Xin Ye, Yunsheng Ma, Jingru Luo, Abhirup Mallik, John Pauly, Burhaneddin Yaman, Liu Ren
2025 J jnl
CoRR
Qinghua Liu, Sam Heshmati, Zheda Mai, Zubin Abraham, John Paparrizos, Liu Ren
2025 J jnl
CoRR
Hengyuan Zhang, David Paz, Yuliang Guo, Xinyu Huang, Henrik I. Christensen, Liu Ren
2025 J jnl
CoRR
Fangzhou Lin, Yuping Wang, Yuliang Guo, Zixun Huang, Xinyu Huang, Haichong Zhang, Kazunori D. Yamada, Zhengzhong Tu, Liu Ren, Ziming Zhang
2025 J jnl
CoRR
Saimouli Katragadda, Cho-Ying Wu, Yuliang Guo, Xinyu Huang, Guoquan Huang, Liu Ren
2025 A* conf
CVPR
Zilin Wang, Sangwoo Mo, Stella X. Yu, Sima Behpour, Liu Ren
2025 J jnl
CoRR
Zilin Wang, Sangwoo Mo, Stella X. Yu, Sima Behpour, Liu Ren
2025 J jnl
CoRR
Xiaoqi Wang, Clint Sebastian, Wenbin He, Liu Ren
2025 J jnl
CoRR
Jiajing Guo, Kenil Patel, Jorge Piazentin Ono, Wenbin He, Liu Ren
2025 A* conf
ICRA
Junjie Ye, David Paz, Hengyuan Zhang, Yuliang Guo, Xinyu Huang, Henrik I. Christensen, Yue Wang, Liu Ren
2025 J jnl
CoRR
Junjie Ye, David Paz, Hengyuan Zhang, Yuliang Guo, Xinyu Huang, Henrik I. Christensen, Yue Wang, Liu Ren
2025 J jnl
CoRR
Xinyuan Yan, Xiwei Xuan, Jorge Piazentin Ono, Jiajing Guo, Vikram Mohanty, Arvind Kumar Shekar, Liang Gou, Bei Wang, Liu Ren
2025 J jnl
CoRR
Xiwei Xuan, Xiaoqi Wang, Wenbin He, Jorge Piazentin Ono, Liang Gou, Kwan-Liu Ma, Liu Ren
2025 J jnl
IEEE Trans. Vis. Comput. Graph.
Xiwei Xuan, Xiaoqi Wang, Wenbin He, Jorge Piazentin Ono, Liang Gou, Kwan-Liu Ma, Liu Ren
2025 J jnl
CoRR
Yifan Li, Xin Li, Tianqin Li, Wenbin He, Yu Kong, Liu Ren
2024 J jnl
CoRR
Thang Doan, Sima Behpour, Xin Li, Wenbin He, Liang Gou, Liu Ren
2024 J jnl
CoRR
Chao Chen, Ruoyu Wang, Yuliang Guo, Cheng Zhao, Xinyu Huang, Chen Feng, Liu Ren
2024 J jnl
CoRR
Xiwei Xuan, Jorge Piazentin Ono, Liang Gou, Kwan-Liu Ma, Liu Ren
2024 A* conf
CVPR
Su Sun, Cheng Zhao, Yuliang Guo, Ruoyu Wang, Xinyu Huang, Yingjie Victor Chen, Liu Ren
2024 J jnl
CoRR
Su Sun, Cheng Zhao, Yuliang Guo, Ruoyu Wang, Xinyu Huang, Yingjie Victor Chen, Liu Ren
2024 A* conf
CVPR
Chenbin Pan, Burhaneddin Yaman, Senem Velipasalar, Liu Ren
2024 J jnl
CoRR
Chenbin Pan, Burhaneddin Yaman, Senem Velipasalar, Liu Ren
2024 conf
IUI Companion
Jiajing Guo, Vikram Mohanty, Hongtao Hao, Liang Gou, Liu Ren
2024 J jnl
Proc. VLDB Endow.
Jie Jeff Xu, Saahir Dhanani, Jorge Henrique Piazentin Ono, Wenbin He, Liu Ren, Kexin Rong
2024 A conf
IROS
Hengyuan Zhang, David Paz, Yuliang Guo, Arun Das, Xinyu Huang, Karsten Haug, Henrik I. Christensen, Liu Ren
2024 J jnl
CoRR
Hengyuan Zhang, David Paz, Yuliang Guo, Arun Das, Xinyu Huang, Karsten Haug, Henrik I. Christensen, Liu Ren
2024 A conf
IROS
Kaiyuan Chen, Kush Hari, Trinity Chung, Michael Wang, Nan Tian, Christian Juette, Jeffrey Ichnowski, Liu Ren, John Kubiatowicz, Ion Stoica, Ken Goldberg
2024 J jnl
CoRR
Kaiyuan Chen, Kush Hari, Trinity Chung, Michael Wang, Nan Tian, Christian Juette, Jeffrey Ichnowski, Liu Ren, John Kubiatowicz, Ion Stoica, Ken Goldberg
2024 A* conf
ICRA
Kaiyuan Chen, Michael Wang, Marcus Gualtieri, Nan Tian, Christian Juette, Liu Ren, Jeffrey Ichnowski, John Kubiatowicz, Ken Goldberg
2024 J jnl
CoRR
Kaiyuan Chen, Nan Tian, Christian Juette, Tianshuang Qiu, Liu Ren, John Kubiatowicz, Ken Goldberg
2024 A* conf
AAAI
Thang Doan, Xin Li, Sima Behpour, Wenbin He, Liang Gou, Liu Ren
2024 J jnl
CoRR
Jinbin Huang, Wenbin He, Liang Gou, Liu Ren, Chris Bryan
2024 conf
CHI Extended Abstracts
Jiajing Guo, Vikram Mohanty, Jorge Henrique Piazentin Ono, Hongtao Hao, Liang Gou, Liu Ren
2024 J jnl
CoRR
Jiajing Guo, Vikram Mohanty, Jorge Piazentin Ono, Hongtao Hao, Liang Gou, Liu Ren
2024 J jnl
CoRR
Xin Ye, Feng Tao, Abhirup Mallik, Burhaneddin Yaman, Liu Ren
2024 A* conf
ICRA
Adam Rashid, Chung Min Kim, Justin Kerr, Letian Fu, Kush Hari, Ayah Ahmad, Kaiyuan Chen, Huang Huang, Marcus Gualtieri, Michael Wang, Christian Juette, Nan Tian, Liu Ren, Ken Goldberg
2024 J jnl
CoRR
Adam Rashid, Chung Min Kim, Justin Kerr, Letian Fu, Kush Hari, Ayah Ahmad, Kaiyuan Chen, Huang Huang, Marcus Gualtieri, Michael Wang, Christian Juette, Nan Tian, Liu Ren, Ken Goldberg
2024 J jnl
CoRR
Yunsheng Ma, Burhaneddin Yaman, Xin Ye, Feng Tao, Abhirup Mallik, Ziran Wang, Liu Ren
2024 conf
ECCV (78)
Sanbao Su, Xin Li, Thang Long Doan, Sima Behpour, Wenbin He, Liang Gou, Fei Miao, Liu Ren
2024 J jnl
IEEE Trans. Vis. Comput. Graph.
Suphanut Jamonnak, Jiajing Guo, Wenbin He, Liang Gou, Liu Ren
2024 conf
ECCV (69)
Yuliang Guo, Abhinav Kumar, Cheng Zhao, Ruoyu Wang, Xinyu Huang, Liu Ren
2024 A* conf
CVPR
Abhinav Kumar, Yuliang Guo, Xinyu Huang, Liu Ren, Xiaoming Liu
2024 J jnl
CoRR
Abhinav Kumar, Yuliang Guo, Xinyu Huang, Liu Ren, Xiaoming Liu
2024 A conf
IUI
Xiaoyu Zhang, Jorge Henrique Piazentin Ono, Wenbin He, Liang Gou, Mrinmaya Sachan, Kwan-Liu Ma, Liu Ren
2024 conf
ECCV (63)
Cheng Zhao, Su Sun, Ruoyu Wang, Yuliang Guo, Jun-Jun Wan, Zhou Huang, Xinyu Huang, Yingjie Victor Chen, Liu Ren
2024 J jnl
CoRR
Cheng Zhao, Su Sun, Ruoyu Wang, Yuliang Guo, Jun-Jun Wan, Zhou Huang, Xinyu Huang, Yingjie Victor Chen, Liu Ren
2024 J jnl
CoRR
Yuliang Guo, Abhinav Kumar, Cheng Zhao, Ruoyu Wang, Xinyu Huang, Liu Ren
2024 A* conf
CVPR
Xiaoqi Wang, Wenbin He, Xiwei Xuan, Clint Sebastian, Jorge Piazentin Ono, Xin Li, Sima Behpour, Thang Doan, Liang Gou, Han-Wei Shen, Liu Ren
2024 J jnl
CoRR
Xiaoqi Wang, Wenbin He, Xiwei Xuan, Clint Sebastian, Jorge Piazentin Ono, Xin Li, Sima Behpour, Thang Doan, Liang Gou, Han-Wei Shen, Liu Ren
2024 A* conf
CVPR
Chenbin Pan, Burhaneddin Yaman, Tommaso Nesti, Abhirup Mallik, Alessandro Gabriele Allievi, Senem Velipasalar, Liu Ren
2024 J jnl
CoRR
Chenbin Pan, Burhaneddin Yaman, Tommaso Nesti, Abhirup Mallik, Alessandro Gabriele Allievi, Senem Velipasalar, Liu Ren
2023 A* conf
NeurIPS
Yunhao Ge, Hong-Xing Yu, Cheng Zhao, Yuliang Guo, Xinyu Huang, Liu Ren, Laurent Itti, Jiajun Wu
2023 J jnl
CoRR
Yunhao Ge, Hong-Xing Yu, Cheng Zhao, Yuliang Guo, Xinyu Huang, Liu Ren, Laurent Itti, Jiajun Wu
2023 J jnl
CoRR
Wenbin He, Suphanut Jamonnak, Liang Gou, Liu Ren
2023 A* conf
CVPR
Wenbin He, Suphanut Jamonnak, Liang Gou, Liu Ren
2023 B conf
FG
Masa Hu, Garrick Brazil, Nanxiang Li, Liu Ren, Xiaoming Liu
2023 conf
ACL (Findings)
Rakesh R. Menon, Bingqing Wang, Jun Araki, Zhengyu Zhou, Zhe Feng, Liu Ren
2023 conf
UIST (Adjunct Volume)
Jiajing Guo, Andrew Benton, Nan Tian, William Ma, Nicholas Feffer, Zhengyu Zhou, Liu Ren
2023 A* conf
NeurIPS
Sima Behpour, Thang Long Doan, Xin Li, Wenbin He, Liang Gou, Liu Ren
2023 J jnl
CoRR
Sima Behpour, Thang Doan, Xin Li, Wenbin He, Liang Gou, Liu Ren
2023 J jnl
CoRR
Thang Doan, Xin Li, Sima Behpour, Wenbin He, Liang Gou, Liu Ren
2023 A conf
IROS
Shubhang Bhatnagar, Sharath Gopal, Narendra Ahuja, Liu Ren
2023 J jnl
CoRR
Shubhang Bhatnagar, Sharath Gopal, Narendra Ahuja, Liu Ren
2023 J jnl
IEEE Trans. Vis. Comput. Graph.
Xiaoyu Zhang, Jorge Piazentin Ono, Huan Song, Liang Gou, Kwan-Liu Ma, Liu Ren
2023 A* conf
NeurIPS
Xin Li, Sima Behpour, Thang Long Doan, Wenbin He, Liang Gou, Liu Ren
2023 J jnl
CoRR
Xin Li, Sima Behpour, Thang Doan, Wenbin He, Liang Gou, Liu Ren
2023 J jnl
IEEE Trans. Vis. Comput. Graph.
Md. Naimul Hoque, Wenbin He, Arvind Kumar Shekar, Liang Gou, Liu Ren
2022 A conf
BMVC
Yaojie Liu, Andrew Z. Hou, Xinyu Huang, Liu Ren, Xiaoming Liu
2022 J jnl
IEEE Trans. Vis. Comput. Graph.
Zhenge Zhao, Panpan Xu, Carlos Scheidegger, Liu Ren
2022 J jnl
CoRR
Huan Song, Zeng Dai, Panpan Xu, Liu Ren
2022 J jnl
IEEE Trans. Vis. Comput. Graph.
Huan Song, Zeng Dai, Panpan Xu, Liu Ren
2022 J jnl
CoRR
Arvind Kumar Shekar, Laureen Lake, Liang Gou, Liu Ren
2022 A* conf
CVPR
Yuyan Li, Yuliang Guo, Zhixin Yan, Xinyu Huang, Ye Duan, Liu Ren
2022 J jnl
CoRR
Yuyan Li, Yuliang Guo, Zhixin Yan, Xinyu Huang, Ye Duan, Liu Ren
2022 J jnl
CoRR
Yuyan Li, Zhixin Yan, Ye Duan, Liu Ren
2022 A* conf
IJCAI
Wenbin He, William Surmeier, Arvind Kumar Shekar, Liang Gou, Liu Ren
2022 J jnl
CoRR
Wenbin He, William Surmeier, Arvind Kumar Shekar, Liang Gou, Liu Ren
2022 A* conf
CVPR
Nathaniel Merrill, Yuliang Guo, Xingxing Zuo, Xinyu Huang, Stefan Leutenegger, Xi Peng, Liu Ren, Guoquan Huang
2022 J jnl
CoRR
Nathaniel Merrill, Yuliang Guo, Xingxing Zuo, Xinyu Huang, Stefan Leutenegger, Xi Peng, Liu Ren, Guoquan Huang
2022 J jnl
IEEE Trans. Vis. Comput. Graph.
Wenbin He, Lincan Zou, Arvind Kumar Shekar, Liang Gou, Liu Ren
2021 J jnl
CoRR
Zhenge Zhao, Panpan Xu, Carlos Scheidegger, Liu Ren
2021 J jnl
Int. J. Comput. Vis.
Arvind Kumar Shekar, Liang Gou, Liu Ren, Axel Wendt
2021 C conf
ICMLA
Arvind Kumar Shekar, Laureen Lake, Liang Gou, Liu Ren
2021 conf
3DV
Yuyan Li, Zhixin Yan, Ye Duan, Liu Ren
2021 Misc conf
ICASSP
Sascha Hornauer, Ke Li, Stella X. Yu, Shabnam Ghaffarzadegan, Liu Ren
2021 J jnl
CoRR
Sascha Hornauer, Ke Li, Stella X. Yu, Shabnam Ghaffarzadegan, Liu Ren
2021 J jnl
IEEE Trans. Vis. Comput. Graph.
Liang Gou, Lincan Zou, Nanxiang Li, Michael Hofmann, Arvind Kumar Shekar, Axel Wendt, Liu Ren
2020 J jnl
IEEE Trans. Vis. Comput. Graph.
Takanori Fujiwara, Jia-Kai Chou, Shilpika, Panpan Xu, Liu Ren, Kwan-Liu Ma
2020 A* conf
ICRA
Yulin Yang, Benzun Pious Wisely Babu, Chuchu Chen, Guoquan Huang, Liu Ren
2020 conf
CVPR Workshops
Yousef Atoum, Mao Ye, Liu Ren, Ying Tai, Xiaoming Liu
2020 J jnl
CoRR
Shen Yan, Huan Song, Nanxiang Li, Lincan Zou, Liu Ren
2020 conf
ICDM (Workshops)
Subhajit Das, Panpan Xu, Zeng Dai, Alex Endert, Liu Ren
2020 J jnl
IEEE Trans. Vis. Comput. Graph.
Yao Ming, Panpan Xu, Furui Cheng, Huamin Qu, Liu Ren
2020 conf
IEEE VIS (Short Papers)
Junhan Zhao, Zeng Dai, Panpan Xu, Liu Ren
2020 C conf
IV
Eman T. Hassan, Nanxiang Li, Liu Ren
2020 J jnl
CoRR
Liang Gou, Lincan Zou, Nanxiang Li, Michael Hofmann, Arvind Kumar Shekar, Axel Wendt, Liu Ren
2020 J jnl
CoRR
Bilal Alsallakh, Zhixin Yan, Shabnam Ghaffarzadegan, Zeng Dai, Liu Ren
2019 J jnl
J. Vis.
Fangfang Zhou, Xiaoru Lin, Chang Liu, Ying Zhao, Panpan Xu, Liu Ren, Tingmin Xue, Lei Ren
2019 J jnl
CoRR
Takanori Fujiwara, Jia-Kai Chou, Shilpika, Panpan Xu, Liu Ren, Kwan-Liu Ma
2019 J jnl
CoRR
Kaiqiang Song, Bingqing Wang, Zhe Feng, Liu Ren, Fei Liu
2019 A* conf
KDD
Yao Ming, Panpan Xu, Huamin Qu, Liu Ren
2019 J jnl
CoRR
Yao Ming, Panpan Xu, Huamin Qu, Liu Ren
2019 J jnl
IEEE Trans. Vis. Comput. Graph.
Dongyu Liu, Panpan Xu, Liu Ren
2019 J jnl
IEEE Trans. Vis. Comput. Graph.
Gromit Yeuk-Yin Chan, Panpan Xu, Zeng Dai, Liu Ren
2018 J jnl
IEEE Trans. Vis. Comput. Graph.
Bilal Alsallakh, Amin Jourabloo, Mao Ye, Xiaoming Liu, Liu Ren
2018 A* conf
ISMAR
Benzun Pious Wisely Babu, Zhixin Yan, Mao Ye, Liu Ren
2018 J jnl
IEEE Trans. Vis. Comput. Graph.
Yuanzhe Chen, Panpan Xu, Liu Ren
2017 J jnl
IEEE Trans. Vis. Comput. Graph.
Zhixin Yan, Mao Ye, Liu Ren
2017 J jnl
CoRR
Bilal Alsallakh, Amin Jourabloo, Mao Ye, Xiaoming Liu, Liu Ren
2017 A* conf
ACM Multimedia
Yueting Zhuang, Ramesh C. Jain, Wen Gao, Liu Ren, Kiyoharu Aizawa
2017 A* conf
ICCV
Amin Jourabloo, Mao Ye, Xiaoming Liu, Liu Ren
2017 J jnl
CoRR
Amin Jourabloo, Mao Ye, Xiaoming Liu, Liu Ren
2017 J jnl
IEEE Trans. Vis. Comput. Graph.
Bilal Alsallakh, Liu Ren
2017 J jnl
IEEE Trans. Vis. Comput. Graph.
Panpan Xu, Honghui Mei, Liu Ren, Wei Chen
2016 A* conf
ISMAR
Chao Du, Yen-Lin Chen, Mao Ye, Liu Ren
2016 A* conf
ISMAR
Benzun P. Wisely Babu, Soohwan Kim, Zhixin Yan, Liu Ren
2015 conf
I3D
Jennifer Chandler, Lei Yang, Liu Ren
2011 A* conf
ICCV
Mao Ye, Xianwang Wang, Ruigang Yang, Liu Ren, Marc Pollefeys
2009 A* conf
CVPR
Xinyu Huang, Liu Ren, Ruigang Yang
2005 J jnl
ACM Trans. Graph.
Liu Ren, Alton Patrick, Alexei A. Efros, Jessica K. Hodgins, James M. Rehg
2005 J jnl
ACM Trans. Graph.
Liu Ren, Gregory Shakhnarovich, Jessica K. Hodgins, Hanspeter Pfister, Paul A. Viola
2004 A conf
IEEE Visualization
Wei Chen, Liu Ren, Matthias Zwicker, Hanspeter Pfister
2004 conf
SIGGRAPH Sketches
Liu Ren, Gregory Shakhnarovich, Jessica K. Hodgins, Hanspeter Pfister, Paul A. Viola
2002 J jnl
Comput. Graph. Forum
Liu Ren, Hanspeter Pfister, Matthias Zwicker