Vasilis Syrgkanis

204 papers A* 57A 3B 2C 1Journal 124Unranked 17
YearRankTypeTitle / Venue / Authors
2026 J jnl
CoRR
Jiyuan Tan, Vasilis Syrgkanis
2026 J jnl
CoRR
Ayush Sawarni, Jiyuan Tan, Vasilis Syrgkanis
2026 J jnl
Trans. Mach. Learn. Res.
Dung Daniel T. Ngo, Keegan Harris, Anish Agarwal, Vasilis Syrgkanis, Zhiwei Steven Wu
2026 J jnl
Oper. Res.
Vasilis Syrgkanis, Ruohan Zhan
2026 J jnl
CoRR
Hanlin Zhang, Jikai Jin, Vasilis Syrgkanis, Sham M. Kakade
2026 J jnl
CoRR
Justin Whitehouse, Ayush Sawarni, Vasilis Syrgkanis
2025 A* conf
ICML
Hui Lan, Haoge Chang, Eleanor Wiske Dillon, Vasilis Syrgkanis
2025 J jnl
CoRR
Hui Lan, Haoge Chang, Eleanor Dillon, Vasilis Syrgkanis
2025 J jnl
CoRR
Kara Liu, Russ Altman, Vasilis Syrgkanis
2025 J jnl
CoRR
Keertana Chidambaram, Karthik Vinary Seetharaman, Vasilis Syrgkanis
2025 J jnl
CoRR
Jikai Jin, Vasilis Syrgkanis, Sham M. Kakade, Hanlin Zhang
2025 J jnl
CoRR
Jiyuan Tan, Jose H. Blanchet, Vasilis Syrgkanis
2025 J jnl
CoRR
Justin Whitehouse, Morgane Austern, Vasilis Syrgkanis
2025 J jnl
CoRR
Jikai Jin, Lester Mackey, Vasilis Syrgkanis
2025 J jnl
CoRR
Shiangyi Lin, Hui Lan, Vasilis Syrgkanis
2025 A* conf
COLT
Justin Whitehouse, Christopher Jung, Vasilis Syrgkanis, Bryan Wilder, Zhiwei Steven Wu
2025 J jnl
CoRR
Ayush Sawarni, Jikai Jin, Justin Whitehouse, Vasilis Syrgkanis
2025 J jnl
CoRR
Ayush Sawarni, Sahasrajit Sarmasarkar, Vasilis Syrgkanis
2025 J jnl
CoRR
Jikai Jin, Vasilis Syrgkanis
2025 A* conf
COLT
Jikai Jin, Vasilis Syrgkanis
2024 A* conf
ICLR
Yash Chandak, Shiv Shankar, Vasilis Syrgkanis, Emma Brunskill
2024 J jnl
CoRR
Victor Chernozhukov, Christian Hansen, Nathan Kallus, Martin Spindler, Vasilis Syrgkanis
2024 J jnl
CoRR
Zhaomeng Chen, Junting Duan, Victor Chernozhukov, Vasilis Syrgkanis
2024 J jnl
SIGecom Exch.
Keegan Harris, Vasilis Syrgkanis
2024 A conf
AISTATS
Hui Lan, Vasilis Syrgkanis
2024 A* conf
NeurIPS
Jiyuan Tan, Jose H. Blanchet, Vasilis Syrgkanis
2024 J jnl
CoRR
Jiyuan Tan, Jose H. Blanchet, Vasilis Syrgkanis
2024 J jnl
CoRR
Keertana Chidambaram, Karthik Vinay Seetharaman, Vasilis Syrgkanis
2024 J jnl
CoRR
Ravi B. Sojitra, Vasilis Syrgkanis
2024 A* conf
ICLR
Divyat Mahajan, Ioannis Mitliagkas, Brady Neal, Vasilis Syrgkanis
2024 A* conf
NeurIPS
Jikai Jin, Vasilis Syrgkanis
2024 J jnl
CoRR
Justin Whitehouse, Christopher Jung, Vasilis Syrgkanis, Bryan Wilder, Zhiwei Steven Wu
2024 J jnl
CoRR
Allison Lau, Younwoo Choi, Vahid Balazadeh Meresht, Keertana Chidambaram, Vasilis Syrgkanis, Rahul G. Krishnan
2024 J jnl
CoRR
Hyunji Nam, Allen Nie, Ge Gao, Vasilis Syrgkanis, Emma Brunskill
2024 J jnl
CoRR
Zihao Li, Hui Lan, Vasilis Syrgkanis, Mengdi Wang, Masatoshi Uehara
2024 A* conf
NeurIPS
Vahid Balazadeh Meresht, Keertana Chidambaram, Viet Nguyen, Rahul G. Krishnan, Vasilis Syrgkanis
2024 J jnl
CoRR
Vahid Balazadeh Meresht, Keertana Chidambaram, Viet Nguyen, Rahul G. Krishnan, Vasilis Syrgkanis
2024 J jnl
CoRR
Jikai Jin, Vasilis Syrgkanis
2024 J jnl
CoRR
Yifan Wu, Ramesh Johari, Vasilis Syrgkanis, Gabriel Y. Weintraub
2024 J jnl
CoRR
Jabari Hastings, Christopher Jung, Charlotte Peale, Vasilis Syrgkanis
2023 J jnl
CoRR
Yash Chandak, Shiv Shankar, Vasilis Syrgkanis, Emma Brunskill
2023 J jnl
CoRR
Hui Lan, Vasilis Syrgkanis
2023 J jnl
CoRR
Dung Daniel T. Ngo, Keegan Harris, Anish Agarwal, Vasilis Syrgkanis, Zhiwei Steven Wu
2023 J jnl
CoRR
Qizhao Chen, Morgane Austern, Vasilis Syrgkanis
2023 A* conf
COLT
Andrew Bennett, Nathan Kallus, Xiaojie Mao, Whitney Newey, Vasilis Syrgkanis, Masatoshi Uehara
2023 J jnl
CoRR
Jikai Jin, Vasilis Syrgkanis
2023 J jnl
CoRR
Andrew Bennett, Nathan Kallus, Xiaojie Mao, Whitney Newey, Vasilis Syrgkanis, Masatoshi Uehara
2023 A* conf
COLT
Andrew Bennett, Nathan Kallus, Xiaojie Mao, Whitney Newey, Vasilis Syrgkanis, Masatoshi Uehara
2023 J jnl
CoRR
Vasilis Syrgkanis, Ruohan Zhan
2023 J jnl
CoRR
Andrew Bennett, Nathan Kallus, Xiaojie Mao, Whitney Newey, Vasilis Syrgkanis, Masatoshi Uehara
2022 J jnl
CoRR
Rahul Singh, Vasilis Syrgkanis
2022 J jnl
Oper. Res.
Yishay Mansour, Alex Slivkins, Vasilis Syrgkanis, Zhiwei Steven Wu
2022 A* conf
NeurIPS
Qizhao Chen, Vasilis Syrgkanis, Morgane Austern
2022 J jnl
CoRR
Qizhao Chen, Vasilis Syrgkanis, Morgane Austern
2022 J jnl
CoRR
Divyat Mahajan, Ioannis Mitliagkas, Brady Neal, Vasilis Syrgkanis
2022 J jnl
Games Econ. Behav.
Constantinos Daskalakis, Vasilis Syrgkanis
2022 J jnl
SIAM J. Comput.
Constantinos Daskalakis, Maxwell Fishelson, Brendan Lucier, Vasilis Syrgkanis, Santhoshini Velusamy
2022 conf
CLeaR
Khashayar Khosravi, Greg Lewis, Vasilis Syrgkanis
2022 A* conf
NeurIPS
Vahid Balazadeh Meresht, Vasilis Syrgkanis, Rahul G. Krishnan
2022 J jnl
CoRR
Vahid Balazadeh Meresht, Vasilis Syrgkanis, Rahul G. Krishnan
2022 A* conf
ICML
Victor Chernozhukov, Whitney Newey, Victor Quintas-Martinez, Vasilis Syrgkanis
2022 A* conf
NeurIPS
Dhruv Rohatgi, Vasilis Syrgkanis
2022 J jnl
CoRR
Anish Agarwal, Vasilis Syrgkanis
2022 conf
CLeaR
Kartik Ahuja, Divyat Mahajan, Vasilis Syrgkanis, Ioannis Mitliagkas
2022 J jnl
CoRR
Kartik Ahuja, Divyat Mahajan, Vasilis Syrgkanis, Ioannis Mitliagkas
2021 J jnl
CoRR
Victor Chernozhukov, Whitney Newey, Rahul Singh, Vasilis Syrgkanis
2021 A* conf
NeurIPS
Morgane Austern, Vasilis Syrgkanis
2021 A* conf
WWW
Gali Noti, Vasilis Syrgkanis
2021 A* conf
KDD
Vasilis Syrgkanis, Greg Lewis, Miruna Oprescu, Maggie Hei, Keith Battocchi, Eleanor Dillon, Jing Pan, Yifeng Wu, Paul Lo, Huigang Chen, Totte Harinen, Jeong-Yoon Lee
2021 J jnl
ACM Trans. Economics and Comput.
Nicole Immorlica, Brendan Lucier, Jieming Mao, Vasilis Syrgkanis, Christos Tzamos
2021 J jnl
CoRR
Amit Sharma, Vasilis Syrgkanis, Cheng Zhang, Emre Kiciman
2021 A* conf
NeurIPS
Greg Lewis, Vasilis Syrgkanis
2021 A* conf
EC
Annie Liang, Xiaosheng Mu, Vasilis Syrgkanis
2021 A* conf
NeurIPS
Keith Battocchi, Eleanor Dillon, Maggie Hei, Greg Lewis, Miruna Oprescu, Vasilis Syrgkanis
2021 J jnl
CoRR
Jann Spiess, Vasilis Syrgkanis
2021 A* conf
ICML
Dung Daniel T. Ngo, Logan Stapleton, Vasilis Syrgkanis, Steven Wu
2021 J jnl
CoRR
Dung Daniel T. Ngo, Logan Stapleton, Vasilis Syrgkanis, Zhiwei Steven Wu
2021 A* conf
ICLR
Tri Dao, Govinda M. Kamath, Vasilis Syrgkanis, Lester Mackey
2021 J jnl
CoRR
Tri Dao, Govinda M. Kamath, Vasilis Syrgkanis, Lester Mackey
2021 J jnl
CoRR
Victor Chernozhukov, Carlos Cinelli, Whitney Newey, Amit Sharma, Vasilis Syrgkanis
2021 J jnl
CoRR
Victor Chernozhukov, Whitney K. Newey, Victor Quintas-Martinez, Vasilis Syrgkanis
2021 J jnl
CoRR
Dhruv Rohatgi, Vasilis Syrgkanis
2020 J jnl
CoRR
Morgane Austern, Vasilis Syrgkanis
2020 J jnl
Oper. Res.
Yishay Mansour, Aleksandrs Slivkins, Vasilis Syrgkanis
2020 J jnl
CoRR
Gali Noti, Vasilis Syrgkanis
2020 J jnl
CoRR
Greg Lewis, Vasilis Syrgkanis
2020 A* conf
COLT
Vasilis Syrgkanis, Manolis Zampetakis
2020 J jnl
CoRR
Vasilis Syrgkanis, Manolis Zampetakis
2020 A* conf
NeurIPS
Nishanth Dikkala, Greg Lewis, Lester Mackey, Vasilis Syrgkanis
2020 J jnl
CoRR
Nishanth Dikkala, Greg Lewis, Lester Mackey, Vasilis Syrgkanis
2020 J jnl
J. ACM
Miroslav Dudík, Nika Haghtalab, Haipeng Luo, Robert E. Schapire, Vasilis Syrgkanis, Jennifer Wortman Vaughan
2020 A* conf
EC
Constantinos Daskalakis, Maxwell Fishelson, Brendan Lucier, Vasilis Syrgkanis, Santhoshini Velusamy
2020 J jnl
CoRR
Constantinos Daskalakis, Maxwell Fishelson, Brendan Lucier, Vasilis Syrgkanis, Santhoshini Velusamy
2020 A* conf
IJCAI
Dylan J. Foster, Vasilis Syrgkanis
2019 J jnl
CoRR
Annie Liang, Xiaosheng Mu, Vasilis Syrgkanis
2019 J jnl
Math. Oper. Res.
Vasilis Syrgkanis, David Kempe, Éva Tardos
2019 A* conf
NeurIPS
Jonas Mueller, Vasilis Syrgkanis, Matt Taddy
2019 A* conf
NeurIPS
Vasilis Syrgkanis, Victor Lei, Miruna Oprescu, Maggie Hei, Keith Battocchi, Greg Lewis
2019 J jnl
CoRR
Vasilis Syrgkanis, Victor Lei, Miruna Oprescu, Maggie Hei, Keith Battocchi, Greg Lewis
2019 J jnl
CoRR
Khashayar Khosravi, Greg Lewis, Vasilis Syrgkanis
2019 A* conf
ICML
Miruna Oprescu, Vasilis Syrgkanis, Zhiwei Steven Wu
2019 J jnl
CoRR
Dylan J. Foster, Vasilis Syrgkanis
2019 A* conf
NeurIPS
Victor Chernozhukov, Mert Demirer, Greg Lewis, Vasilis Syrgkanis
2019 J jnl
CoRR
Mert Demirer, Vasilis Syrgkanis, Greg Lewis, Victor Chernozhukov
2019 A* conf
COLT
Dylan J. Foster, Vasilis Syrgkanis
2018 A* conf
ICML
Yash Deshpande, Lester W. Mackey, Vasilis Syrgkanis, Matt Taddy
2018 J jnl
CoRR
Greg Lewis, Vasilis Syrgkanis
2018 conf
WINE
Nicole Immorlica, Brendan Lucier, Jieming Mao, Vasilis Syrgkanis, Christos Tzamos
2018 conf
Computer-Aided Diagnosis
Jimmy Wu, Diondra Peck, Scott Hsieh, Vandana Dialani, Constance D. Lehman, Bolei Zhou, Vasilis Syrgkanis, Lester W. Mackey, Genevieve Patterson
2018 J jnl
CoRR
Jimmy Wu, Diondra Peck, Scott Hsieh, Vandana Dialani, Constance D. Lehman, Bolei Zhou, Vasilis Syrgkanis, Lester W. Mackey, Genevieve Patterson
2018 A* conf
EC
Zhe Feng, Chara Podimata, Vasilis Syrgkanis
2018 J jnl
CoRR
Jonas Mueller, Vasilis Syrgkanis, Matt Taddy
2018 B conf
SAGT
Amy Greenwald, Takehiro Oyakawa, Vasilis Syrgkanis
2018 A* conf
EC
Yiling Chen, Nicole Immorlica, Brendan Lucier, Vasilis Syrgkanis, Juba Ziani
2018 A* conf
EC
Annie Liang, Xiaosheng Mu, Vasilis Syrgkanis
2018 A* conf
ICML
Ilias Zadik, Lester W. Mackey, Vasilis Syrgkanis
2018 J jnl
CoRR
Miruna Oprescu, Vasilis Syrgkanis, Zhiwei Steven Wu
2018 J jnl
CoRR
Victor Chernozhukov, Denis Nekipelov, Vira Semenova, Vasilis Syrgkanis
2018 A* conf
ICML
Akshay Krishnamurthy, Zhiwei Steven Wu, Vasilis Syrgkanis
2018 J jnl
CoRR
Akshay Krishnamurthy, Zhiwei Steven Wu, Vasilis Syrgkanis
2018 A* conf
WWW
Amy Greenwald, Takehiro Oyakawa, Vasilis Syrgkanis
2018 conf
ICLR (Poster)
Constantinos Daskalakis, Andrew Ilyas, Vasilis Syrgkanis, Haoyang Zeng
2018 A* conf
SODA
Nikhil R. Devanur, Balasubramanian Sivan, Vasilis Syrgkanis
2017 J jnl
CoRR
Vasilis Syrgkanis
2017 conf
NIPS
Vasilis Syrgkanis
2017 J jnl
CoRR
Vasilis Syrgkanis
2017 J jnl
CoRR
Yash Deshpande, Lester W. Mackey, Vasilis Syrgkanis, Matt Taddy
2017 J jnl
CoRR
Nicole Immorlica, Brendan Lucier, Jieming Mao, Vasilis Syrgkanis, Christos Tzamos
2017 A* conf
STOC
Vasilis Syrgkanis
2017 J jnl
CoRR
Vasilis Syrgkanis, Elie Tamer, Juba Ziani
2017 J jnl
CoRR
Zhe Feng, Chara Podimata, Vasilis Syrgkanis
2017 J jnl
CoRR
Yiling Chen, Nicole Immorlica, Brendan Lucier, Vasilis Syrgkanis, Juba Ziani
2017 J jnl
CoRR
Annie Liang, Xiaosheng Mu, Vasilis Syrgkanis
2017 A* conf
FOCS
Miroslav Dudík, Nika Haghtalab, Haipeng Luo, Robert E. Schapire, Vasilis Syrgkanis, Jennifer Wortman Vaughan
2017 J jnl
CoRR
Lester W. Mackey, Vasilis Syrgkanis, Ilias Zadik
2017 conf
NIPS
Robert S. Chen, Brendan Lucier, Yaron Singer, Vasilis Syrgkanis
2017 J jnl
CoRR
Robert S. Chen, Brendan Lucier, Yaron Singer, Vasilis Syrgkanis
2017 J jnl
CoRR
Amy Greenwald, Takehiro Oyakawa, Vasilis Syrgkanis
2017 J jnl
J. Artif. Intell. Res.
Tim Roughgarden, Vasilis Syrgkanis, Éva Tardos
2017 J jnl
CoRR
Constantinos Daskalakis, Andrew Ilyas, Vasilis Syrgkanis, Haoyang Zeng
2017 conf
NIPS
Darrell Hoy, Denis Nekipelov, Vasilis Syrgkanis
2016 A* conf
EC
Yishay Mansour, Aleksandrs Slivkins, Vasilis Syrgkanis, Zhiwei Steven Wu
2016 J jnl
CoRR
Yishay Mansour, Aleksandrs Slivkins, Vasilis Syrgkanis, Zhiwei Steven Wu
2016 A conf
UAI
David M. Pennock, Vasilis Syrgkanis, Jennifer Wortman Vaughan
2016 A* conf
ICML
Vasilis Syrgkanis, Akshay Krishnamurthy, Robert E. Schapire
2016 J jnl
CoRR
Vasilis Syrgkanis, Akshay Krishnamurthy, Robert E. Schapire
2016 conf
NIPS
Vasilis Syrgkanis, Haipeng Luo, Akshay Krishnamurthy, Robert E. Schapire
2016 J jnl
CoRR
Vasilis Syrgkanis, Haipeng Luo, Akshay Krishnamurthy, Robert E. Schapire
2016 A* conf
SODA
Thodoris Lykouris, Vasilis Syrgkanis, Éva Tardos
2016 A* conf
FOCS
Constantinos Daskalakis, Vasilis Syrgkanis
2016 J jnl
CoRR
Amy Greenwald, Takehiro Oyakawa, Vasilis Syrgkanis
2016 J jnl
CoRR
Miroslav Dudík, Nika Haghtalab, Haipeng Luo, Robert E. Schapire, Vasilis Syrgkanis, Jennifer Wortman Vaughan
2016 J jnl
CoRR
Tim Roughgarden, Vasilis Syrgkanis, Éva Tardos
2016 A* conf
STOC
Michal Feldman, Nicole Immorlica, Brendan Lucier, Tim Roughgarden, Vasilis Syrgkanis
2015 A* conf
AAAI
Uriel Feige, Michal Feldman, Nicole Immorlica, Rani Izsak, Brendan Lucier, Vasilis Syrgkanis
2015 J jnl
SIGecom Exch.
Vasilis Syrgkanis
2015 A* conf
EC
Yishay Mansour, Aleksandrs Slivkins, Vasilis Syrgkanis
2015 J jnl
CoRR
Yishay Mansour, Aleksandrs Slivkins, Vasilis Syrgkanis
2015 A* conf
EC
Denis Nekipelov, Vasilis Syrgkanis, Éva Tardos
2015 J jnl
CoRR
Denis Nekipelov, Vasilis Syrgkanis, Éva Tardos
2015 conf
NIPS
Vasilis Syrgkanis, Alekh Agarwal, Haipeng Luo, Robert E. Schapire
2015 J jnl
CoRR
Vasilis Syrgkanis, Alekh Agarwal, Haipeng Luo, Robert E. Schapire
2015 A* conf
EC
Brendan Lucier, Vasilis Syrgkanis
2015 J jnl
CoRR
Brendan Lucier, Vasilis Syrgkanis
2015 A* conf
EC
Vasilis Syrgkanis, David Kempe, Éva Tardos
2015 J jnl
CoRR
Thodoris Lykouris, Vasilis Syrgkanis, Éva Tardos
2015 J jnl
CoRR
Constantinos Daskalakis, Vasilis Syrgkanis
2015 J jnl
CoRR
Nikhil R. Devanur, Balasubramanian Sivan, Vasilis Syrgkanis
2015 conf
NIPS
Jason D. Hartline, Vasilis Syrgkanis, Éva Tardos
2015 J jnl
CoRR
Jason D. Hartline, Vasilis Syrgkanis, Éva Tardos
2015 J jnl
CoRR
Vasilis Syrgkanis
2015 J jnl
CoRR
Vasilis Syrgkanis, Johannes Gehrke
2015 J jnl
CoRR
Darrell Hoy, Denis Nekipelov, Vasilis Syrgkanis
2015 A* conf
EC
Nikhil R. Devanur, Jamie Morgenstern, Vasilis Syrgkanis, S. Matthew Weinberg
2015 A* conf
WWW
Nicole Immorlica, Gregory Stoddard, Vasilis Syrgkanis
2015 J jnl
CoRR
Michal Feldman, Nicole Immorlica, Brendan Lucier, Tim Roughgarden, Vasilis Syrgkanis
2014 J jnl
CoRR
Uriel Feige, Michal Feldman, Nicole Immorlica, Rani Izsak, Brendan Lucier, Vasilis Syrgkanis
2014 J jnl
Electron. Colloquium Comput. Complex.
Uriel Feige, Michal Feldman, Nicole Immorlica, Rani Izsak, Brendan Lucier, Vasilis Syrgkanis
2014 B conf
SAGT
Yoram Bachrach, Vasilis Syrgkanis, Éva Tardos, Milan Vojnovic
2013 J jnl
CoRR
Balasubramanian Sivan, Vasilis Syrgkanis
2013 A* conf
STOC
Vasilis Syrgkanis, Éva Tardos
2013 J jnl
CoRR
Hu Fu, Brendan Lucier, Balasubramanian Sivan, Vasilis Syrgkanis
2013 A* conf
EC
Hu Fu, Brendan Lucier, Balasubramanian Sivan, Vasilis Syrgkanis
2013 J jnl
CoRR
Nikhil R. Devanur, Jamie Morgenstern, Vasilis Syrgkanis
2013 conf
WINE
Brendan Lucier, Yaron Singer, Vasilis Syrgkanis, Éva Tardos
2013 conf
WINE
Yoram Bachrach, Vasilis Syrgkanis, Milan Vojnovic
2013 J jnl
CoRR
Yoram Bachrach, Vasilis Syrgkanis, Milan Vojnovic
2013 conf
WINE
Michal Feldman, Brendan Lucier, Vasilis Syrgkanis
2013 J jnl
CoRR
Michal Feldman, Brendan Lucier, Vasilis Syrgkanis
2013 C conf
CIAC
Evangelos Bampas, Aris Pagourtzis, George Pierrakos, Vasilis Syrgkanis
2013 J jnl
CoRR
Nicole Immorlica, Gregory Stoddard, Vasilis Syrgkanis
2013 J jnl
CoRR
Yoram Bachrach, Vasilis Syrgkanis, Éva Tardos, Milan Vojnovic
2013 conf
WINE
Balasubramanian Sivan, Vasilis Syrgkanis
2012 J jnl
CoRR
Vasilis Syrgkanis
2012 J jnl
CoRR
Vasilis Syrgkanis, Éva Tardos
2012 A* conf
EC
Vasilis Syrgkanis, Éva Tardos
2012 J jnl
CoRR
Vasilis Syrgkanis, Éva Tardos
2012 J jnl
CoRR
Balasubramanian Sivan, Vasilis Syrgkanis, Omer Tamuz
2012 conf
WINE
Balasubramanian Sivan, Vasilis Syrgkanis, Omer Tamuz
2012 A* conf
SODA
Renato Paes Leme, Vasilis Syrgkanis, Éva Tardos
2012 A conf
ITCS
Renato Paes Leme, Vasilis Syrgkanis, Éva Tardos
2012 J jnl
SIGecom Exch.
Renato Paes Leme, Vasilis Syrgkanis, Éva Tardos
2011 J jnl
CoRR
Renato Paes Leme, Vasilis Syrgkanis, Éva Tardos
2010 conf
WINE
Vasilis Syrgkanis