~/talks

Klaus Ostermann

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  • OOPSLA4 editions2020–2025
  • ICFP2 editions2020–2022

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titleconferencedate
Compiling Classical Sequent Calculus to Stock Hardware: The Duality of CompilationOOPSLA 20252025-10-16
An intermediate representation called Xcut intermediate representation encodes classical sequent calculus as a normalized term language with formal typing and…
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Deriving Dependently-Typed OOP from First PrinciplesOOPSLA 20242024-10-20
Derives a dependently typed object-oriented fragment by duality and gives a concrete calculus with two symmetric language fragments plus type- and…
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From Capabilities to Regions: Enabling Efficient Compilation of Lexical Effect ...OOPSLA 20232023-10-23
A typed, semantics- and typability-preserving lift-inference translation converts a source language with second-class capabilities into a region calculus that…
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Back to Direct Style: Typed and TightOOPSLA 20232023-10-23
Two typed languages are presented: a direct-style language and a CPS language, each with an abstract-machine semantics, plus translations both ways that are…
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Lift Inference for Lexical Effect Handlers with Second-Class FunctionsHOPE 20222022-09-11
Presents an algorithm that infers lifting information for lexical effect handlers by translating System Xi (with second-class functions) into Lambda_cap with…
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Structural Refinement TypesTyDe 20222022-09-11
A lightweight refinement-type system and inference algorithm extends algebraic subtyping with rules from polymorphic variants to infer precise refinements…
Talk
Lift Inference for Lexical Effect Handlers with Second-Class FunctionsHOPE 20222022-09-11
Claims a concrete compiler pass that infers lifting information for a core language with second‑class functions and emits explicit region evidence so lexical…
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Introduction and Elimination, Left and RightICFP 20222022-09-11
Claims that four rule choices—right/left introduction and elimination—yield four distinct program structures but are equally expressive through mechanical…
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A Typed Continuation-Passing Translation for Lexical Effect HandlersPLDI 20222022-06-13
Claims a sound translation of lexical effect handlers to pure System F via a continuation-passing translation that needs no runtime support. Handlers, regions…
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Choosing Mathematical Function Implementations for Speed and AccuracyPLDI 20222022-06-13
A tool named optuner selects among 45 cosine and 49 sine implementations (about 4.8 million configurations) by building a linear error model from Taylor…
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Effects as Capabilities: Effect Handlers and Lightweight Effect PolymorphismOOPSLA 20202020-11-15
A new language called Effekt implements contextual effect polymorphism by making function-like blocks second class so they cannot escape, providing a…
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Compiling Effect Handlers in Capability-Passing StyleICFP 20202020-08-23
A compilation technique translates effect handlers written in capability-passing style into simply-typed lambda calculus using iterated continuation-passing…
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