Department of Computer Science
University of Hong Kong
Email: xnning at hku.hk
About
I am a final-year Ph.D. student in the Programming Language Group at HKU, working with Bruno Oliveira.
Before that,
I obtained my B.S. (with Honors) from Zhejiang Unversity.
I had the pleasure to work with
Tom Schrijvers over Spring 2018,
and
Richard Eisenberg over Summer 2018.
I spent my Summer 2019 with the Google Search Team in New York City.
I greatly enjoyed my 2020 working with Daan Leijen at Microsoft Research.
I am a steering committee member of the Haskell Symposium.
News
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2021 Mar Haskell Implementors' Workshop Call for talks is up! Please consider submitting your coolest ideas about Haskell implementations/libraries/etc!
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2020 Nov Excited to serve as a mentor at PLMW @ SPLASH.
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2020 Oct Selected for Rising Stars in EECS.
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2020 Aug Will serve as the PC chair of Haskell Implementor's Workshop 2021.
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2020 July Will serve on the PC of PADL 2021.
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2020 June New paper accepted at Haskell 2020.
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2020 May New paper accepted at ICFP 2020.
Publications
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Perceus: Garbage Free Reference Counting with Reuse
Alex Reinking*,Ningning Xie *, Leonardo de Moura, Daan Leijen
(*Equal contributions)
PLDI 2021 [preprint] -
Effect Handlers in Haskell, Evidently.
Ningning Xie , Daan Leijen
Haskell 2020 [doi] [paper] [slides] [Haskell implementation] [Haskell library on Hackage] -
Row and Bounded Polymorphism via Disjoint Polymorphism.
Ningning Xie , Bruno C. d. S. Oliveira, Xuan Bi, Tom Schrijvers
ECOOP 2020 [doi] [paper] [appendix] [Coq proof] [poster] -
Effect Handlers, Evidently.
Ningning Xie , Jonathan Brachthäuser, Daniel Hillerström, Philipp Schuster, Daan Leijen
ICFP 2020 [doi] [paper] [slides] [technical report] -
Kind Inference for Datatypes.
Ningning Xie , Richard A. Eisenberg, Bruno C. d. S. Oliveira
POPL 2020 [doi] [paper] [slides] [appendix]
ACM SIGPLAN Distinguished Paper Award -
Distributive Disjoint Polymorphism for Compositional Programming.
Xuan Bi,Ningning Xie , Bruno C. d. S. Oliveira, Tom Schrijvers
ESOP 2019 [doi] [paper] [slides] [Coq proof, Haskell implementation] [poster] -
Coherence of Type Class Resolution.
Gert-Jan Bottu,Ningning Xie , Koar Marntirosian, Tom Schrijvers
ICFP 2019 [doi] [paper] [appendix] -
Consistent Subtyping for All.
Ningning Xie , Xuan Bi, Bruno C. d. S. Oliveira, Tom Schrijvers
TOPLAS [doi] [paper] [Coq proof, Haskell implementation] -
Consistent Subtyping for All.
Ningning Xie , Xuan Bi, Bruno C. d. S. Oliveira
ESOP 2018 [doi] [paper] [Coq proof, Haskell implementation]
Selected for TOPLAS Special Issue
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Let Arguments Go First.
Ningning Xie , Bruno C. d. S. Oliveira
ESOP 2018 [doi] [paper] [appendix] [slides] [Coq proof]
Dissertation
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Higher-rank Polymorphism: Type Inference and Extensions.
Ph.D. Dissertation. The University of Hong Kong. [draft]
Committee: Bruno Oliveira (advisor), Sergio Lourenco (chair), Zhiyi Huang, Giulio Chiribella, Simon Peyton Jones (external)
Workshops
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Coercion Quantification.
Ningning Xie , Richard A. Eisenberg
Haskell Implementors' Workshop 2018 [extended abstract] [slides] [Haskell implementation] -
Towards Unification for Dependent Types.
Ningning Xie , Bruno C. d. S. Oliveira
Trends in Functional Programming 2017 [extended abstract] [slides]
Talks
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Perceus: Garbage Free Reference Counting with Reuse
Invited talk. LFCS. The University of Edinburgh. Mar 2021.
(slides and videos will be released after PLDI) -
Type-based Language Design.
Invited talk. Peking University. Dec 2020.
Invited talk. JHC. Shanghai Jiao Tong University. Dec 2020. -
Inferring Datatypes.
Lightning talk. Haskell Implementors' Workshop 2019. Aug 2019. [slides] -
Dependent Types in Haskell.
Invited talk. Hong Kong Functional Programming Meetup. Dec 2018. [code] [slides] -
Consistent Subtyping for All.
Invited talk. Penn PLClub. University of Pennsylvania. May 2018. [slides]
Service
- Steering Committee. Haskell Symposium.
- Program Chair. Haskell Implementor's Workshop 2021.
- Mentor. PLMW@POPL 2021.
- Program Committee. PADL 2021.
- Mentor. PLMW@SPLASH 2020.
- Program Committee. Haskell Implementors' Workshop 2019.
- Program Committee. Haskell 2019.
- Artifact Evaluation Committee. ICFP 2019. PLDI 2020.
- Sub-Reviewer. APLAS 2016, 2017. ESOP 2017. FLOPS 2018. ECOOP 2019. ICFP 2019.
- Student Volunteer. APSys 2016. PLDI 2018. ICFP 2018. ETAPS 2019.
Teaching
- Instructor. Haskell 101. Google, New York City. November 2019.
- Teaching Assistant. Principles of Programming Languages. The University of Hong Kong. Spring 2019.
- Teaching Assistant. Functional Programming. The University of Hong Kong. Fall 2017.