Tue 25 Aug 2020 03:45 - 04:00 at ICFP Asia 2 - Asia 2 Chair(s): Alan Jeffrey
Focusing is a technique from proof theory that exploits type information to prune inessential nondeterminism from proof search procedures. Viewed through the lens of the Curry-Howard correspondence, a focused typing derivation yields terms in normal form. This paper explores how to exploit focusing for reasoning about contextual equivalences and full abstraction. We present a focused polymorphic call-by-push-value calculus and prove a computational completeness result: for every well-typed term, there exists a focused term that is βη-equivalent to it. This completeness result yields a powerful way to refine the context lemmas for establishing contextual equivalences, cutting down the set that must be considered to just focused contexts. The paper demonstrates the application of focusing to establish program equivalences, including free theorems. It also uses focusing to prove full abstraction of a translation of the pure, total call-by-push-value language into a language with divergence and simple effect types, yielding a novel solution to a simple-to-state, but hitherto difficult to solve problem.
Mon 24 Aug Times are displayed in time zone: Eastern Time (US & Canada) change
14:30 - 14:45 Talk | Achieving High-Performance the Functional Way - A Functional Pearl on Expressing High-Performance Optimizations as Rewrite Strategies ICFP Program Bastian HagedornUniversity of Münster, Germany, Johannes LenfersUniversity of Münster, Thomas KoehlerUniversity of Glasgow, United Kingdom, Xueying QinUniversity of Glasgow, United Kingdom, Sergei GorlatchUniversity of Münster, Germany, Michel SteuwerThe University of Edinburgh DOI Media Attached | ||
14:45 - 15:00 Talk | Staged Selective Parser Combinators ICFP Program Jamie WillisImperial College London, Nicolas WuImperial College London, UK, Matthew PickeringUniversity of Bristol, UK DOI Media Attached | ||
15:00 - 15:15 Talk | Kindly Bent to Free Us ICFP Program Gabriel RadanneInria, Hannes SaffrichUniversity of Freiburg, Peter ThiemannUniversity of Freiburg, Germany DOI Pre-print Media Attached File Attached | ||
15:15 - 15:30 Talk | Sealing Pointer-Based Optimizations Behind Pure Functions ICFP Program Daniel SelsamMicrosoft Research, Simon HudonCarnegie Mellon University, Leonardo De MouraMicrosoft Research, n.n. DOI Media Attached | ||
15:30 - 15:45 Talk | Effects for Efficiency: Asymptotic Speedup with First-Class Control ICFP Program Daniel HillerströmThe University of Edinburgh, Sam LindleyHeriot-Watt University, UK / The University of Edinburgh, UK, John LongleyThe University of Edinburgh DOI Media Attached | ||
15:45 - 16:00 Talk | Computation Focusing ICFP Program DOI Media Attached | ||
16:00 - 16:15 Talk | Retrofitting Parallelism onto OCamlDistinguished Paper ICFP Program KC SivaramakrishnanIIT Madras, Stephen DolanUniversity of Cambridge, UK, Leo WhiteJane Street, Sadiq JafferOpsian and OCaml Labs, Tom KellyOCaml Labs, Anmol SahooIIT Madras, Sudha ParimalaIIT Madras, Atul DhimanIIT Madras, Anil MadhavapeddyOCaml Labs DOI Media Attached | ||
16:15 - 16:30 Talk | Liquid Information Flow ControlDistinguished Paper ICFP Program Nadia PolikarpovaUniversity of California, San Diego, Deian StefanUniversity of California at San Diego, USA, Jean YangCarnegie Mellon University, Shachar ItzhakyTechnion, Israel, Travis HanceCarnegie Mellon University, Armando Solar-LezamaMassachusetts Institute of Technology, USA DOI Media Attached |
Tue 25 Aug Times are displayed in time zone: Eastern Time (US & Canada) change
02:30 - 02:45 Talk | Achieving High-Performance the Functional Way - A Functional Pearl on Expressing High-Performance Optimizations as Rewrite Strategies ICFP Program Bastian HagedornUniversity of Münster, Germany, Johannes LenfersUniversity of Münster, Thomas KoehlerUniversity of Glasgow, United Kingdom, Xueying QinUniversity of Glasgow, United Kingdom, Sergei GorlatchUniversity of Münster, Germany, Michel SteuwerThe University of Edinburgh DOI Media Attached | ||
02:45 - 03:00 Talk | Staged Selective Parser Combinators ICFP Program Jamie WillisImperial College London, Nicolas WuImperial College London, UK, Matthew PickeringUniversity of Bristol, UK DOI Media Attached | ||
03:00 - 03:15 Talk | Kindly Bent to Free Us ICFP Program Gabriel RadanneInria, Hannes SaffrichUniversity of Freiburg, Peter ThiemannUniversity of Freiburg, Germany DOI Pre-print Media Attached File Attached | ||
03:15 - 03:30 Talk | Sealing Pointer-Based Optimizations Behind Pure Functions ICFP Program Daniel SelsamMicrosoft Research, Simon HudonCarnegie Mellon University, Leonardo De MouraMicrosoft Research, n.n. DOI Media Attached | ||
03:30 - 03:45 Talk | Effects for Efficiency: Asymptotic Speedup with First-Class Control ICFP Program Daniel HillerströmThe University of Edinburgh, Sam LindleyHeriot-Watt University, UK / The University of Edinburgh, UK, John LongleyThe University of Edinburgh DOI Media Attached | ||
03:45 - 04:00 Talk | Computation Focusing ICFP Program DOI Media Attached | ||
04:00 - 04:15 Talk | Retrofitting Parallelism onto OCamlDistinguished Paper ICFP Program KC SivaramakrishnanIIT Madras, Stephen DolanUniversity of Cambridge, UK, Leo WhiteJane Street, Sadiq JafferOpsian and OCaml Labs, Tom KellyOCaml Labs, Anmol SahooIIT Madras, Sudha ParimalaIIT Madras, Atul DhimanIIT Madras, Anil MadhavapeddyOCaml Labs DOI Media Attached | ||
04:15 - 04:30 Talk | Liquid Information Flow ControlDistinguished Paper ICFP Program Nadia PolikarpovaUniversity of California, San Diego, Deian StefanUniversity of California at San Diego, USA, Jean YangCarnegie Mellon University, Shachar ItzhakyTechnion, Israel, Travis HanceCarnegie Mellon University, Armando Solar-LezamaMassachusetts Institute of Technology, USA DOI Media Attached |