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Documents authored by Huang, Jing

Found 2 Possible Name Variants:

Huang, Jing

Document
DOI: 10.4230/LIPIcs.MFCS.2018.68
Interval-Like Graphs and Digraphs

Authors: Pavol Hell, Jing Huang, Ross M. McConnell, and Arash Rafiey

Published in: LIPIcs, Volume 117, 43rd International Symposium on Mathematical Foundations of Computer Science (MFCS 2018)

Abstract
We unify several seemingly different graph and digraph classes under one umbrella. These classes are all, broadly speaking, different generalizations of interval graphs, and include, in addition to interval graphs, adjusted interval digraphs, threshold graphs, complements of threshold tolerance graphs (known as `co-TT' graphs), bipartite interval containment graphs, bipartite co-circular arc graphs, and two-directional orthogonal ray graphs. (The last three classes coincide, but have been investigated in different contexts.) This common view is made possible by introducing reflexive relationships (loops) into the analysis. We also show that all the above classes are united by a common ordering characterization, the existence of a min ordering. We propose a common generalization of all these graph and digraph classes, namely signed-interval digraphs, and show that they are precisely the digraphs that are characterized by the existence of a min ordering. We also offer an alternative geometric characterization of these digraphs. For most of the above graph and digraph classes, we show that they are exactly those signed-interval digraphs that satisfy a suitable natural restriction on the digraph, like having a loop on every vertex, or having a symmetric edge-set, or being bipartite. For instance, co-TT graphs are precisely those signed-interval digraphs that have each edge symmetric. We also offer some discussion of future work on recognition algorithms and characterizations.
Cite as

Pavol Hell, Jing Huang, Ross M. McConnell, and Arash Rafiey. Interval-Like Graphs and Digraphs. In 43rd International Symposium on Mathematical Foundations of Computer Science (MFCS 2018). Leibniz International Proceedings in Informatics (LIPIcs), Volume 117, pp. 68:1-68:13, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2018)

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@InProceedings{hell_et_al:LIPIcs.MFCS.2018.68,
  author =	{Hell, Pavol and Huang, Jing and McConnell, Ross M. and Rafiey, Arash},
  title =	{{Interval-Like Graphs and Digraphs}},
  booktitle =	{43rd International Symposium on Mathematical Foundations of Computer Science (MFCS 2018)},
  pages =	{68:1--68:13},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-086-6},
  ISSN =	{1868-8969},
  year =	{2018},
  volume =	{117},
  editor =	{Potapov, Igor and Spirakis, Paul and Worrell, James},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.MFCS.2018.68},
  URN =		{urn:nbn:de:0030-drops-96503},
  doi =		{10.4230/LIPIcs.MFCS.2018.68},
  annote =	{Keywords: graph theory, interval graphs, interval bigraphs, min ordering, co-TT graph}
}

Huang, Xuejing

Document
Artifact
DOI: 10.4230/DARTS.8.2.4
Direct Foundations for Compositional Programming (Artifact)

Authors: Andong Fan, Xuejing Huang, Han Xu, Yaozhu Sun, and Bruno C. d. S. Oliveira

Published in: DARTS, Volume 8, Issue 2, Special Issue of the 36th European Conference on Object-Oriented Programming (ECOOP 2022)

Abstract
Our companion paper proposes a new formulation of the 𝖥_{i}^{+} calculus with disjoint polymorphism and a merge operator based on Type-Directed Operational Semantics. The artifact contains Coq formalization of the 𝖥_{i}^{+} calculus and our new implementation of the CP language, which demonstrates the new 𝖥_{i}^{+} can serve as the direct foundation for Compositional Programming.
Cite as

Andong Fan, Xuejing Huang, Han Xu, Yaozhu Sun, and Bruno C. d. S. Oliveira. Direct Foundations for Compositional Programming (Artifact). In Special Issue of the 36th European Conference on Object-Oriented Programming (ECOOP 2022). Dagstuhl Artifacts Series (DARTS), Volume 8, Issue 2, pp. 4:1-4:3, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2022)

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@Article{fan_et_al:DARTS.8.2.4,
  author =	{Fan, Andong and Huang, Xuejing and Xu, Han and Sun, Yaozhu and Oliveira, Bruno C. d. S.},
  title =	{{Direct Foundations for Compositional Programming (Artifact)}},
  pages =	{4:1--4:3},
  journal =	{Dagstuhl Artifacts Series},
  ISSN =	{2509-8195},
  year =	{2022},
  volume =	{8},
  number =	{2},
  editor =	{Fan, Andong and Huang, Xuejing and Xu, Han and Sun, Yaozhu and Oliveira, Bruno C. d. S.},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DARTS.8.2.4},
  URN =		{urn:nbn:de:0030-drops-162020},
  doi =		{10.4230/DARTS.8.2.4},
  annote =	{Keywords: Intersection types, disjoint polymorphism, operational semantics}
}
Document
Artifact
DOI: 10.4230/DARTS.8.2.17
Union Types with Disjoint Switches (Artifact)

Authors: Baber Rehman, Xuejing Huang, Ningning Xie, and Bruno C. d. S. Oliveira

Published in: DARTS, Volume 8, Issue 2, Special Issue of the 36th European Conference on Object-Oriented Programming (ECOOP 2022)

Abstract
This artifact contains the mechanical formalization of the calculi associated with the paper Union Types with Disjoint Switches. All of the metatheory has been formalized in Coq theorem prover. We provide a docker image as well the code archive. The paper studies a union calculus ({λ_{u}}). Primary idea of {λ_{u}} calculus is a type based disjoint switch construct for the elimination of union types. We also study several extensions of the {λ_{u}} calculus including intersection types, distributive subtyping, nominal types, parametric polymorphism and an extension for the empty types.
Cite as

Baber Rehman, Xuejing Huang, Ningning Xie, and Bruno C. d. S. Oliveira. Union Types with Disjoint Switches (Artifact). In Special Issue of the 36th European Conference on Object-Oriented Programming (ECOOP 2022). Dagstuhl Artifacts Series (DARTS), Volume 8, Issue 2, pp. 17:1-17:6, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2022)

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@Article{rehman_et_al:DARTS.8.2.17,
  author =	{Rehman, Baber and Huang, Xuejing and Xie, Ningning and Oliveira, Bruno C. d. S.},
  title =	{{Union Types with Disjoint Switches (Artifact)}},
  pages =	{17:1--17:6},
  journal =	{Dagstuhl Artifacts Series},
  ISSN =	{2509-8195},
  year =	{2022},
  volume =	{8},
  number =	{2},
  editor =	{Rehman, Baber and Huang, Xuejing and Xie, Ningning and Oliveira, Bruno C. d. S.},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DARTS.8.2.17},
  URN =		{urn:nbn:de:0030-drops-162150},
  doi =		{10.4230/DARTS.8.2.17},
  annote =	{Keywords: Union types, switch expression, disjointness, intersection types}
}
Document
DOI: 10.4230/LIPIcs.ECOOP.2022.18
Direct Foundations for Compositional Programming

Authors: Andong Fan, Xuejing Huang, Han Xu, Yaozhu Sun, and Bruno C. d. S. Oliveira

Published in: LIPIcs, Volume 222, 36th European Conference on Object-Oriented Programming (ECOOP 2022)

Abstract
The recently proposed CP language adopts Compositional Programming: a new modular programming style that solves challenging problems such as the Expression Problem. CP is implemented on top of a polymorphic core language with disjoint intersection types called 𝖥_{i}^{+}. The semantics of 𝖥_{i}^{+} employs an elaboration to a target language and relies on a sophisticated proof technique to prove the coherence of the elaboration. Unfortunately, the proof technique is technically challenging and hard to scale to many common features, including recursion or impredicative polymorphism. Thus, the original formulation of 𝖥_{i}^{+} does not support the two later features, which creates a gap between theory and practice, since CP fundamentally relies on them. This paper presents a new formulation of 𝖥_{i}^{+} based on a type-directed operational semantics (TDOS). The TDOS approach was recently proposed to model the semantics of languages with disjoint intersection types (but without polymorphism). Our work shows that the TDOS approach can be extended to languages with disjoint polymorphism and model the full 𝖥_{i}^{+} calculus. Unlike the elaboration semantics, which gives the semantics to 𝖥_{i}^{+} indirectly via a target language, the TDOS approach gives a semantics to 𝖥_{i}^{+} directly. With a TDOS, there is no need for a coherence proof. Instead, we can simply prove that the semantics is deterministic. The proof of determinism only uses simple reasoning techniques, such as straightforward induction, and is able to handle problematic features such as recursion and impredicative polymorphism. This removes the gap between theory and practice and validates the original proofs of correctness for CP. We formalized the TDOS variant of the 𝖥_{i}^{+} calculus and all its proofs in the Coq proof assistant.
Cite as

Andong Fan, Xuejing Huang, Han Xu, Yaozhu Sun, and Bruno C. d. S. Oliveira. Direct Foundations for Compositional Programming. In 36th European Conference on Object-Oriented Programming (ECOOP 2022). Leibniz International Proceedings in Informatics (LIPIcs), Volume 222, pp. 18:1-18:28, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2022)

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@InProceedings{fan_et_al:LIPIcs.ECOOP.2022.18,
  author =	{Fan, Andong and Huang, Xuejing and Xu, Han and Sun, Yaozhu and Oliveira, Bruno C. d. S.},
  title =	{{Direct Foundations for Compositional Programming}},
  booktitle =	{36th European Conference on Object-Oriented Programming (ECOOP 2022)},
  pages =	{18:1--18:28},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-225-9},
  ISSN =	{1868-8969},
  year =	{2022},
  volume =	{222},
  editor =	{Ali, Karim and Vitek, Jan},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.ECOOP.2022.18},
  URN =		{urn:nbn:de:0030-drops-162463},
  doi =		{10.4230/LIPIcs.ECOOP.2022.18},
  annote =	{Keywords: Intersection types, disjoint polymorphism, operational semantics}
}
Document
DOI: 10.4230/LIPIcs.ECOOP.2022.25
Union Types with Disjoint Switches

Authors: Baber Rehman, Xuejing Huang, Ningning Xie, and Bruno C. d. S. Oliveira

Published in: LIPIcs, Volume 222, 36th European Conference on Object-Oriented Programming (ECOOP 2022)

Abstract
Union types are nowadays a common feature in many modern programming languages. This paper investigates a formulation of union types with an elimination construct that enables case analysis (or switches) on types. The interesting aspect of this construct is that each clause must operate on disjoint types. By using disjoint switches, it is possible to ensure exhaustiveness (i.e. all possible cases are handled), and that none of the cases overlap. In turn, this means that the order of the cases does not matter and that reordering the cases has no impact on the semantics, helping with program understanding and refactoring. While implemented in the Ceylon language, disjoint switches have not been formally studied in the research literature, although a related notion of disjointness has been studied in the context of disjoint intersection types. We study union types with disjoint switches formally and in a language independent way. We first present a simplified calculus, called the union calculus (λ_u), which includes disjoint switches and prove several results, including type soundness and determinism. The notion of disjointness in λ_u is in essence the dual notion of disjointness for intersection types. We then present a more feature-rich formulation of λ_u, which includes intersection types, distributive subtyping and a simple form of nominal types. This extension reveals new challenges. Those challenges require us to depart from the dual notion of disjointness for intersection types, and use a more general formulation of disjointness instead. Among other applications, we show that disjoint switches provide an alternative to certain forms of overloading, and that they enable a simple approach to nullable (or optional) types. All the results about λ_u and its extensions have been formalized in the Coq theorem prover.
Cite as

Baber Rehman, Xuejing Huang, Ningning Xie, and Bruno C. d. S. Oliveira. Union Types with Disjoint Switches. In 36th European Conference on Object-Oriented Programming (ECOOP 2022). Leibniz International Proceedings in Informatics (LIPIcs), Volume 222, pp. 25:1-25:31, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2022)

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@InProceedings{rehman_et_al:LIPIcs.ECOOP.2022.25,
  author =	{Rehman, Baber and Huang, Xuejing and Xie, Ningning and Oliveira, Bruno C. d. S.},
  title =	{{Union Types with Disjoint Switches}},
  booktitle =	{36th European Conference on Object-Oriented Programming (ECOOP 2022)},
  pages =	{25:1--25:31},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-225-9},
  ISSN =	{1868-8969},
  year =	{2022},
  volume =	{222},
  editor =	{Ali, Karim and Vitek, Jan},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.ECOOP.2022.25},
  URN =		{urn:nbn:de:0030-drops-162531},
  doi =		{10.4230/LIPIcs.ECOOP.2022.25},
  annote =	{Keywords: Union types, switch expression, disjointness, intersection types}
}
Document
Artifact
DOI: 10.4230/DARTS.7.2.9
Type-Directed Operational Semantics for Gradual Typing (Artifact)

Authors: Wenjia Ye, Bruno C. d. S. Oliveira, and Xuejing Huang

Published in: DARTS, Volume 7, Issue 2, Special Issue of the 35th European Conference on Object-Oriented Programming (ECOOP 2021)

Abstract
This artifact includes the Coq formalization associated with the paper Type-Directed Operational Semantics for Gradual Typing submitted in ECOOP 2021. The paper illustrates how to employ TDOS on gradually typed languages using two calculi. The first calculus, called λB, is inspired by the semantics of the blame calculus(λB^g) and is sound with λB^g. The second calculus, called λB^r, explores a different design space in the semantics of gradually typed languages. This document explains how to run the Coq formalization. Artifact can either be compiled in the pre-built docker image with all the dependencies installed or it could be built from the scratch. Sections 1-7 explain the basic information about the artifact. Section 7 explains how to get the docker image for the artifact. Section 8 explains the prerequisites and the steps to run coq files from scratch. Section 9 explains coq files briefly. Section 10 shows the correspondence of important lemmas, definitions and pictures discussed in the paper with their respective Coq formalization.
Cite as

Wenjia Ye, Bruno C. d. S. Oliveira, and Xuejing Huang. Type-Directed Operational Semantics for Gradual Typing (Artifact). In Special Issue of the 35th European Conference on Object-Oriented Programming (ECOOP 2021). Dagstuhl Artifacts Series (DARTS), Volume 7, Issue 2, pp. 9:1-9:6, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2021)

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@Article{ye_et_al:DARTS.7.2.9,
  author =	{Ye, Wenjia and Oliveira, Bruno C. d. S. and Huang, Xuejing},
  title =	{{Type-Directed Operational Semantics for Gradual Typing (Artifact)}},
  pages =	{9:1--9:6},
  journal =	{Dagstuhl Artifacts Series},
  ISSN =	{2509-8195},
  year =	{2021},
  volume =	{7},
  number =	{2},
  editor =	{Ye, Wenjia and Oliveira, Bruno C. d. S. and Huang, Xuejing},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DARTS.7.2.9},
  URN =		{urn:nbn:de:0030-drops-140337},
  doi =		{10.4230/DARTS.7.2.9},
  annote =	{Keywords: Gradual Typing, Operational Semantics, Type Systems}
}
Document
DOI: 10.4230/LIPIcs.ECOOP.2021.12
Type-Directed Operational Semantics for Gradual Typing

Authors: Wenjia Ye, Bruno C. d. S. Oliveira, and Xuejing Huang

Published in: LIPIcs, Volume 194, 35th European Conference on Object-Oriented Programming (ECOOP 2021)

Abstract
The semantics of gradually typed languages is typically given indirectly via an elaboration into a cast calculus. This contrasts with more conventional formulations of programming language semantics, where the semantics of a language is given directly using, for instance, an operational semantics. This paper presents a new approach to give the semantics of gradually typed languages directly. We use a recently proposed variant of small-step operational semantics called type-directed operational semantics (TDOS). In TDOS type annotations become operationally relevant and can affect the result of a program. In the context of a gradually typed language, such type annotations are used to trigger type-based conversions on values. We illustrate how to employ TDOS on gradually typed languages using two calculi. The first calculus, called λ B^g, is inspired by the semantics of the blame calculus, but it has implicit type conversions, enabling it to be used as a gradually typed language. The second calculus, called λ B^r, explores a different design space in the semantics of gradually typed languages. It uses a so-called blame recovery semantics, which enables eliminating some false positives where blame is raised but normal computation could succeed. For both calculi, type safety is proved. Furthermore we show that the semantics of λ B^g is sound with respect to the semantics of the blame calculus, and that λ B^r comes with a gradual guarantee. All the results have been mechanically formalized in the Coq theorem prover.
Cite as

Wenjia Ye, Bruno C. d. S. Oliveira, and Xuejing Huang. Type-Directed Operational Semantics for Gradual Typing. In 35th European Conference on Object-Oriented Programming (ECOOP 2021). Leibniz International Proceedings in Informatics (LIPIcs), Volume 194, pp. 12:1-12:30, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2021)

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@InProceedings{ye_et_al:LIPIcs.ECOOP.2021.12,
  author =	{Ye, Wenjia and Oliveira, Bruno C. d. S. and Huang, Xuejing},
  title =	{{Type-Directed Operational Semantics for Gradual Typing}},
  booktitle =	{35th European Conference on Object-Oriented Programming (ECOOP 2021)},
  pages =	{12:1--12:30},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-190-0},
  ISSN =	{1868-8969},
  year =	{2021},
  volume =	{194},
  editor =	{M{\o}ller, Anders and Sridharan, Manu},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.ECOOP.2021.12},
  URN =		{urn:nbn:de:0030-drops-140551},
  doi =		{10.4230/LIPIcs.ECOOP.2021.12},
  annote =	{Keywords: Gradual Typing, Type Systems, Operational Semantics}
}
Document
Artifact
DOI: 10.4230/DARTS.6.2.9
A Type-Directed Operational Semantics For a Calculus with a Merge Operator (Artifact)

Authors: Xuejing Huang and Bruno C. d. S. Oliveira

Published in: DARTS, Volume 6, Issue 2, Special Issue of the 34th European Conference on Object-Oriented Programming (ECOOP 2020)

Abstract
Our companion paper proposes a type-directed operational semantics (TDOS) for λ_i^{:}: a calculus with intersection types and a merge operator. The artifact contains the specification of λ_i^{:} and its TDOS, and related Coq code. λ_i^{:} is formalized using the locally nameless representation with cofinite quantification. The Coq definition and some infrastructure code are generated by Ott and LNgen. λ_i^{:} is inspired by two closely related calculi by Dunfield (2014) and Oliveira et al. (2016), and a simple variant of it is designed to demonstrate the possibility to match with them without any modification. To relate the two calculi with λ_i^{:}, a sound theorem on semantics and a completeness theorem on typing are proved for each variant. In addition, we extended the bidirectional typing of Oliveira et al.’s λ_i calculus, and designed an elaboration from it to λ_i^{:}, to show that many of λ_i^{:}’s explicit annotations can be inferred automatically.
Cite as

Xuejing Huang and Bruno C. d. S. Oliveira. A Type-Directed Operational Semantics For a Calculus with a Merge Operator (Artifact). In Special Issue of the 34th European Conference on Object-Oriented Programming (ECOOP 2020). Dagstuhl Artifacts Series (DARTS), Volume 6, Issue 2, pp. 9:1-9:4, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2020)

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@Article{huang_et_al:DARTS.6.2.9,
  author =	{Huang, Xuejing and Oliveira, Bruno C. d. S.},
  title =	{{A Type-Directed Operational Semantics For a Calculus with a Merge Operator (Artifact)}},
  pages =	{9:1--9:4},
  journal =	{Dagstuhl Artifacts Series},
  ISSN =	{2509-8195},
  year =	{2020},
  volume =	{6},
  number =	{2},
  editor =	{Huang, Xuejing and Oliveira, Bruno C. d. S.},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DARTS.6.2.9},
  URN =		{urn:nbn:de:0030-drops-132060},
  doi =		{10.4230/DARTS.6.2.9},
  annote =	{Keywords: operational semantics, type systems, intersection types}
}
Document
DOI: 10.4230/LIPIcs.ECOOP.2020.26
A Type-Directed Operational Semantics For a Calculus with a Merge Operator

Authors: Xuejing Huang and Bruno C. d. S. Oliveira

Published in: LIPIcs, Volume 166, 34th European Conference on Object-Oriented Programming (ECOOP 2020)

Abstract
Calculi with disjoint intersection types and a merge operator provide general mechanisms that can subsume various other features. Such calculi can also encode highly dynamic forms of object composition, which capture common programming patterns in dynamically typed languages (such as JavaScript) in a fully statically typed manner. Unfortunately, unlike many other foundational calculi (such as System F, System F_{< :} or Featherweight Java), recent calculi with the merge operator lack a (direct) operational semantics with standard and expected properties such as determinism and subject-reduction. Furthermore the metatheory for such calculi can only account for terminating programs, which is a significant restriction in practice. This paper proposes a type-directed operational semantics (TDOS) for λ_i^{:}: a calculus with intersection types and a merge operator. The calculus is inspired by two closely related calculi by Dunfield (2014) and Oliveira et al. (2016). Although Dunfield proposes a direct small-step semantics for her calculus, her semantics lacks both determinism and subject-reduction. Using our TDOS we obtain a direct semantics for λ_i^{:} that has both properties. To fully obtain determinism, the λ_i^{:} calculus employs a disjointness restriction proposed in Oliveira et al.’s λ_i calculus. As an added benefit the TDOS approach deals with recursion in a straightforward way, unlike λ_i and subsequent calculi where recursion is problematic. To further relate λ_i^{:} to the calculi by Dunfield and Oliveira et al. we show two results. Firstly, the semantics of λ_i^{:} is sound with respect to Dunfield’s small-step semantics. Secondly, we show that the type system of λ_i^{:} is complete with respect to the λ_i type system. All results have been fully formalized in the Coq theorem prover.
Cite as

Xuejing Huang and Bruno C. d. S. Oliveira. A Type-Directed Operational Semantics For a Calculus with a Merge Operator. In 34th European Conference on Object-Oriented Programming (ECOOP 2020). Leibniz International Proceedings in Informatics (LIPIcs), Volume 166, pp. 26:1-26:32, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2020)

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@InProceedings{huang_et_al:LIPIcs.ECOOP.2020.26,
  author =	{Huang, Xuejing and Oliveira, Bruno C. d. S.},
  title =	{{A Type-Directed Operational Semantics For a Calculus with a Merge Operator}},
  booktitle =	{34th European Conference on Object-Oriented Programming (ECOOP 2020)},
  pages =	{26:1--26:32},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-154-2},
  ISSN =	{1868-8969},
  year =	{2020},
  volume =	{166},
  editor =	{Hirschfeld, Robert and Pape, Tobias},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.ECOOP.2020.26},
  URN =		{urn:nbn:de:0030-drops-131832},
  doi =		{10.4230/LIPIcs.ECOOP.2020.26},
  annote =	{Keywords: operational semantics, type systems, intersection types}
}
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