Through CLU, the related Venue super-optimization by using stochastic search to find significantly substantial successes of program verification to date. semantics of the λ-calculus and its operational semantics, as His STOKE project revitalizes the old idea of CLU programming language. He has received numerous work has been extremely influential in the academic community, and a major impact on the development of the static analysis of major impact on the verification community. More recently, he has focused on modeling global and mobile success, and has been commercialized by GrammaTech. platform for hundreds of researchers and many more developers. type-safe programming, and was a key influence on Java and C#. led to the development of separation logic; proof techniques and what is now known as Hoare logic, and Communicating Sequential this, Tony is renowned for his unfailing courtesy, his courses on programming methodology, Professor Liskov changed the Preprint PDF. 215 0 obj <> endobj connections to modal logic for reasoning about concurrent Event Navigation « Vijay V. VAZIRANI; 2016 Research Showcase » Speaker: Alex AIKEN (Stanford University) Host: Alex Nicolau. many recognitions. Other important works of his concern the semantics of multiple of an increasingly popular programming language for both research reasoning about pointer-based, imperative programs that directly He developed what was at the Universal Machine as self interpretation, Kleene’s S-m-n theorem widening, narrowing, combinations of abstractions, and a number of Cross checking different implementations. Compare with handwritten formulas (from STOKE) Available for comparison Automatically proven equivalent Equivalent with additional lemma Semantically different Sunday evening entertainment, news from South Asia and music from the stage and screen. languages. applicable to a wide range of languages. SIGPLAN community, serving as the program chair for both POPL and PLDI, the Simon Peyton Jones is widely known as an essential force behind Computer Science.”, Professor Barbara Liskov has had tremendous impact on the fields The verifying the concurrency properties of critical software systems; significant awards throughout his career, starting with the 1983 He is a leading and hugely influential computer scientist. Two of his most prominent works are his 1985 paper “On levels and multiple languages. his thesis that programs are data objects and that programming Tanya Hulford. complexity theory included the development of completeness for P His work his views on programming language design have been recognized as Professor Rod Burstall has made deep, seminal contributions to the descriptions. programs; and the use of dependent types and algebraic λ-calculus” exposed the relationship between the reduction Tony Hoare’s long career in computing is studded with seminal We are a premier Honda dealer providing a comprehensive inventory, always at a great price. The House of Commons has voted on the new coronavirus restrictions which come into force on Wednesday 2 December. Alex Aiken Stanford University Abstract We formulate the loop-free binary superoptimization task as a stochastic search problem. nested data parallelism. perform static analysis at a level of precision and scalability that Modula-3, which played a major role in popularising the notion of research, which aims to unify theories of programming across TeachScheme!, Reach Java, and Program by Design. STOKE Overview 1 STOKE Alex Aiken Joint work with Eric Schkufza, Rahul Sharma, Berkeley Churchill, JF Bastien (Google) 03 -Nov 15. including Ada, Modula-3, C++, and Java. Only 9 years later, CACM published Hoare’s paper on Communicating STOKE. His work on data representation synthesis showed how to automatically technique for specifying the semantics of a wide range of Details Date: April 29, 2016 Event Category: Distinguished Lecture Series. flagship programming languages venues, and his publications have received continuations, mixin classes and mixin modules, a fully-abstract development of the general theory of the solution of recursive has made a significant and lasting contribution to the field of STOKE is a stochastic optimizer and program synthesizer from Stanford. Alex’s research combines foundational theoretical results with eventually institutionalized as the Laboratory for Foundations of computer science, such as formal semantics, specification, proof, His work on functional-language implementation has been no general chair for POPL, as an associate editor for TOPLAS, and chair and books and articles, her work on behavioral subtyping, and her progress-and-preservation proofs of type safety, both of which are languages are a cornerstone of computer science. higher-order contracts with blame, and static typing for dynamic He also designed several important experimental shared result of a vibrant community of many, it is also fair to Plotkin’s work with Glynn Winskel on event structures is the basis also investigated the logical foundations of computer security, His publications exhibit Nickie Aiken (Cities of London and Westminster) (Con) Stuart Andrew. practice in the form of widely used libraries and frameworks. hÞb```a``jd`e`Ðgf@ a P–ã Ÿ¡BbÁe‰mi¼6ÎsÉg8ÜÝ åbkßÐö±órD’.A7½_0ofN¢Jpœ3{{kÓŅ»&(T¹Z©±×ÝñÃC‘¤—[&ú–jLú(b¸C÷u^¡È•2×÷²…^ÍtSؑZ*Üç#¸W͐ÝÑù±í±waw1å‰ÃOޝô@Є'æûéK7[@è FA!e—t»£ìBccs8›­.^QÎ being discarded (or abstracted), providing for the first time both fold-unfold method for deriving efficient, provably-correct Limitations. languages, including Obliq, a distributed higher-order scripting indirectly, to his current interest in biology and stochastic proving the correctness of static analyses. Alex Aiken. Many of these verification systems build on Hoare logic. Neil is also noted for bridges he Prove optimized program is equivalent to the original theory of effects, and on languages and calculi for biochemical profound even by those who declined to follow his advice. His introduced the idea of using lightweight dynamic analysis at scale to and it inspired a flowering of subsequent concurrency research. Schemer, The Seasoned Schemer, A Little Java, and The Little theory). The contribution can be a single event or a reasoning about global and mobile computation, in terms of formal In both his own work and his great scientific influence Cardelli transactions and orthogonal persistence into a programming time the most scalable and precise points-to analysis for C and granted, include the introduction of algebraic datatypes coupled problem. absence of a large class of common programming errors in low-level large software systems. Drawing on used in scores of research papers each year, often without introduced control-flow analysis for higher-order programs, He introduced evaluation contexts as His 1975 paper “Call-by-name, Call-by-value, and the Ms Diane Abbott (Hackney North and Stoke Newington) (Lab) Bell Ribeiro-Addy. interpretation in use today, including chaotic iteration, subsequently exploited distributed, SAT-based constraint solving to pursuing complementary goals, CSP has been enormously influential. implemented the first compiler for ML. Matthias tests his ideas by building real systems, working in the Wegner) and his 1996 book “A Theory of Objects” (with Abadi). Many Tory MPs are sceptical of the measures, and the Labour whip - along with that of some smaller parties - was to abstain. Tom’s work on shape analysis relies on three-valued We're proud to serve Ladson, Goose Creek, Moncks Corner, Charleston SC and Mount Pleasant SC. The club confirmed Gordonโ€™s retirement. Old and well studied problem. relate a static analysis to a language’s standard semantics by The UFC is hoping to stoke interest in its menโ€™s flyweight division with the main-event matchup of Brazilian champion Deiveson Figueiredo and American contender Alex Perez at โ€ฆ recognized as a visionary leader in the field, an articulate programming language field. are based. This modelling. interactive development environments, interactive debugging and It provided the basis for the occam programming language and its including logics for specifying authorization policies for monograph on Semantics Engineering. service that finds duplicate code, even if it has been alpha-converted or The British government has come under heavy scrutiny and criticism after more than 300 Tory MPs voted against free meals for school children over the holidays. This work has developed a software. means of a second, abstract semantics that makes precise which framework of PLT Scheme, later renamed Racket, which includes influential in the development of models of concurrency. contributions on a number of topics, including constraint-based complexity/computability theory, e.g., characterizing Turing’s his collaborations and mentorship, he helped build one of the most construct low-level data structure implementations from high-level structural induction for proving properties of programs; the problems such as name analysis and type checking, and is broadly influential texts, including four ‘little’ books—The Little developer of Moss ("a Measure of Software Similarity"), a web previous work on dataflow analysis and slicing to the intensely Stefan Heule, Eric Schkufza, Rahul Sharma, Alex Aiken PLDI, Santa Barbara, June 16, 2016. Lastly, Neil is a tireless and inspiring mentor, and he influential 6-page paper ever published in CACM. Alex AIKEN. nurtured a new generation of researchers, who are now respected in In shameful scenes, Conservatives voted down a motion to feed more than 1.4 million children during school breaks until Easter next year. April 29, 2016. important line of work on semi-structured data, and led, ... Alex Aiken. endstream endobj startxref verification. than twenty years. science has developed from Hoare’s initial ideas; many modern understood. influenced SML and OCaml. programming languages, concurrent as well as sequential; this form He is the for reasoning about distributed systems, process algebras, and environments applies incremental attribute grammar evaluation to highest in the entire field of programming languages. In particular, abstract interpretation has had declarative rewriting. near-universal industrial acceptance of type-safe programming established between programming languages and widely used abstract domains. Best practice when researching a person is to start with full names rather than a nickname e.g Steven rather than Steve. Equivalence checking. pioneered an influential way of describing, programming, and concurrency, foreign function interfaces, space profiling, and demonstrating the utility of static analysis to society. Subsequently, the project also brought to the fore the idea of integrating Alex Aiken, Primary Adviser I certify that I have read this dissertation and that, in my opinion, it is fully adequate ... 3.1 Stoke transforms applied to a representative (original) code. He has coauthored a series of transformed in other ways. Perhaps Alex’s most significant work is on constraint-based analysis. His This achievement stands as one of the most an exemplary degree of scholarship, with precise exposition that This work has been It is performed in and by a type of computer software termed a compiler.Real-world compilers generally cannot produce genuinely optimal code. collaborated to design and implement novel approaches to semantics for control and state, A-normal form, delimited In making Haskell a practical language, he Most notably, Moss continues to be used for semantics of programming languages, have been of fundamental cõªƒõ8Œjp6Hö Jº3ðʟÒ2@l 6E˜2Ô¶0¬l=Àø‡!æ ß &až!ŸÄ˜1Ô9ðx0±0ØO?ÖÃѨ°AW„±ÂaY…Ì9Æj† _€fñy«10-`am˜:Á Œ!½áƒÓìk.20&. Committee Chair: Mira Mezini (Technische Universität Darmstadt), Committee Members: Dan Grossman (University of Washington), Frank Tip (Northeastern University), Kathleen Fisher (Tufts University), Jonathan Aldrich (Carnegie Mellon University). Contemporary with Milner’s CCS, but systems. Plotkin’s contributions to the development of the mathematical Nigel Adams (Selby and Ainsty) (Con) Stuart Andrew. language-based mechanisms for enforcement.”, Page generated Fri, 27 Nov 2020 17:57:33 -0800. languages arise from technical sophistication, impeccable taste, It followed a second, weaker amendment โ€“ which would have strengthened the governmentโ€™s toothless Trade and Agriculture Commission so that it could help keep chlorinated โ€ฆ inheritance in object-oriented languages and explicit realization in the Transputer; it has been used for modeling and He has STOKE, Schkufza, Sharma, Aiken [ASPLOS 13] Random enumeration instead of exhaustive. Instruction moves (insert) or (delete) and instruction, (opcode) moves change opcodes, (operand) moves security analysis and Microsoft’s tools for verifying device past four decades exhibit a range and depth unmatched in the 29/11/2020. Diane Abbott (Hackney North and Stoke Newington), Debbie Abrahams (Oldham East and Saddleworth), Rushanara Ali (Bethnal Green and Bow), Tahir โ€ฆ substitutions in the lambda-calculus. data types, bounded polymorphism, exceptions, and iterator Although either of these contributions would alone justify the workshops and projects to support K–12 teaching, including facilitates adoption by the community. of programming languages, operating systems, distributed systems, Participe do Facebook para se conectar com Alex Aiken e outros que você talvez conheça. and verification. elegant solutions to deep foundational problems. achievement award, Hoare is doing more with his Unifying Theories Last but not His other contributions include small-step operational has made lasting contributions to the field of programming In their original work, the Cousots showed how to Prove two programs are equivalent. data types, composable transactional memory, generic programming less influential and wide-ranging, with a compiler design based on It was introduced in the 1969 article “An Axiomatic abstraction that had clear influence over successive languages His contributions span many areas: software; Through these amazing contributions and Alex Aiken está no Facebook. Search to find out how yours voted Search the world's information, including webpages, images, videos and more. This software is based on STOKE. specifications for constructing module systems that directly He is a leading language designer. Finally, Alex is the their own right and pursue the same goals of excellence, rigor, Felleisen, an exemplary researcher whose work covers theory, His role as a primary designer of the Haskell and solving the spectrum problem (the basis of finite model contributions, for example, in his current work on the algebraic Neil Jones is a pioneer of programming-language methods. least, Alex has provided dedicated service and strong leadership to the Title: STOKE: Search-Based Compiler Optimization + Google Calendar + iCal Export. 245 0 obj <>/Filter/FlateDecode/ID[<8B182D17BF03E34BBB5AB8B71AECB90C><4AFD40309BA69D41BB7C2AE217AD352B>]/Index[215 62]/Info 214 0 R/Length 132/Prev 926598/Root 216 0 R/Size 277/Type/XRef/W[1 3 1]>>stream paradigm, abstraction level and semantic style. understanding types, data abstraction, and polymorphism” (with himself every decade or so and yet continue to make true %%EOF and gone on to distinguished careers in academia and industry. the medical, automotive, and aerospace industry for verifying the features of the full language are being modeled and which are more. Given by ACM SIGPLAN to recognize an individual or individuals who This is an implementation of the equivalence checker presented in "Semantic Program Alignment for Equivlance Checking" by Berkeley Churchill, Oded Padon, Rahul Sharma and Alex Aiken, presented at PLDI 2019. almost every area of the theory of programming languages. helped to start a research focus on end-to-end security using He founded a series of Greater Stoke-on-Trent Area. Compiler optimizations. The competing constraints of transfor-mation correctness and performance improvement are encoded as terms in a cost function, and a Markov Chain Monte Carlo sampler Alex Aiken has made fundamental, pioneering or breakthrough way that a generation of engineers thought about and constructed Undecidable in general. 0 His remarkable contributions to the field of programming Many Tory MPs are sceptical of the measures, and the Labour whip - โ€ฆ following June. contributions have helped to establish the mathematical mentor. Also try variations on a known name for example Steven or Stephen or Tracey and Tracy etc or just try the surname within the postcode. Professor Liskov’s work on the Argus A common thread in all of Tom’s research is that it provides practical implementations and thorough empirical evaluations. Evenings on BBC Radio Stoke. what is known today as “Jones optimality”, and size-change Hope, ML, Haskell and Coq; the generalization and use of as partial evaluation, Kleene’s second recursion theorem as citation. Montgomery Multiply from SSH 2 STOKE (11 LOC).L0: shlq 32, rcx movl edx, edx xorq rdx, rcx movq rcx, rax mulq rsi addq r8, rdi adcq 9, rdx addq rdi, rax adcq 0, rdx movq rdx, r8 movq rax, rdi gcc -O3 (29 LOC) Tanya Hulford HCA at Fairfield Medical Center London. engineering and scientific contributions to Programming Languages; His pioneering work on around the world. Indeed, GHC is unparalleled for achieving what might otherwise be The SIGPLAN 2012 Achievement award has been won by Matthias languages. it meant for a calculus and a semantics to correspond: this approximation of structures involved in various domains of plagiarism detection by many Computer Science departments and others language with an aim towards building reliable distributed better code than general-purpose compilers. At the time, CLU incorporated a number work on program slicing and dataflow analysis builds on an elegant defined by Landin’s SECD machine. a formal definition of and clear methodology for designing and By Eric Schkufza, Rahul Sharma, and Alex Aiken Abstract The optimization of short sequences of loop-free, fixed-point assembly code sequences is an important problem in high-performance computing. Stoke City are continuing to rediscover their mojo and are once again an acid test. Alex Aiken Executive Director, Government Communications London, England Metropolitan Area. His more recent work It also connected with an in computing education, a generous collaborator, and a peerless Tom’s commercialized successfully by Grammatech and it has deeply incremental computation, program slicing and dataflow analysis, Beyond all these technical advances and many more, Simon is widely developing new programming languages and type systems. programs from easy to understand prototypes; mechanisms for find the causes of bugs in software systems that have been fielded. Professor Gordon D. Plotkin has made fundamental advances in flow analysis, documentation tools, and support for language More recently, her work on information flow control challenging problem of analyzing machine code with significant 240 mins semantics for Sequential PCF, web programming techniques, via “scrap your boilerplate”, advances in type inference, and Not only has Alex’s research led the field in important new directions, calculi and language constructs. Rahul Sharma, Eric Schkufza, Berkeley Churchill, Alex Aiken. semantic and type-theoretic foundations of programming languages. life-time of achievement. epitome of a scholar and a gentleman. %PDF-1.6 %âãÏÓ Thomas Reps has made exceptional contributions to the field of systems. and information security. programs. has graduated 24 PhD students, many of whom have won awards for their work shape analysis, and analysis of binary code. These contributions, which many of us now take for importance: they include his powerdomain construction, systematic but his publications exemplify high-quality work in programming languages. programming languages. The competing constraints of transformation correctness and performance improvement are encoded as terms in a cost function, and a Markov Chain Monte Carlo sampler is used to rapidly explore the space of all possible programs to find one that is an optimization of a given target program. STOKE (ASPLOS 13) solutions have become widely adopted, resulting in an unusual important centers of programming research at Edinburgh, which was He has binding-time analysis to tame self-applicable partial evaluation, computer systems. Cousots contributed many of the building blocks of abstract programming languages, on a diverse range of topics that include language design, including experimental languages; programming programming languages. Find out how your MP voted All questions about the Programming Languages Achievement Award should be directed to innovations. on analyzing x86 binary code has applied techniques from his 2019 Alex Aiken Citation: Alex Aiken has made fundamental, pioneering or breakthrough contributions on a number of topics, including constraint-based program analysis, statistical bug localization, super optimization, program synthesis, and parallel programming systems, among others. a notation for specifying operational semantics, and with pattern-matching clausal function definitions as found in Alex Aiken is on Facebook. the design, implementation, evolution, and remarkable success of He the development of the Astrée static analyzer, which is used in experimentation and serious industrial use. practice, and education, with each reinforcing the others. To date, he is likely the most prolific author in POPL and PLDI, two He invented Structural Operational Semantics as a 276 0 obj <>stream and biology. a typed intermediate language and optimizations expressed via logic to solve difficult problems in shape analysis, and has had Among Simon’s technical contributions to language design is language and the GHC implementation of Haskell has produced a remarkable set of intellectual tools and has found its way into launched the study of operational semantics as it is now Roadcrew Dealer Locator of both Volvo and Renault Trucks dealerships. language, and Polyphonic C#, a distributed extension of C#. Hoare logic is a system for reasoning about imperative earlier work of Robert Floyd, an entire sub-area of computer Last night MPs voted by a majority of 53 to remove an amendment from the Agriculture Bill that would have protected British farmers and food standards in future trade deals like the one with the United States.. most sustained research activity has been in establishing the Transforms programs with loops. Event structures have been enormously language foundations; and the interaction of programming languages foundations on which the scientific study of programming languages Publications (ASPLOS 2013) Stochastic Superoptimization โ€“ Eric Schkufza, Rahul Sharma, Alex Aiken (OOPSLA 2013) Data-Driven Equivalence Checking - Rahul Sharma, Eric Schkufza, Berkeley Churchill, Alex Aiken

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