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Generalized Lr Parsing
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Book Synopsis Generalized LR Parsing by : Masaru Tomita
Download or read book Generalized LR Parsing written by Masaru Tomita and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Generalized LR parsing algorithm (some call it "Tomita's algorithm") was originally developed in 1985 as a part of my Ph.D thesis at Carnegie Mellon University. When I was a graduate student at CMU, I tried to build a couple of natural language systems based on existing parsing methods. Their parsing speed, however, always bothered me. I sometimes wondered whether it was ever possible to build a natural language parser that could parse reasonably long sentences in a reasonable time without help from large mainframe machines. At the same time, I was always amazed by the speed of programming language compilers, because they can parse very long sentences (i.e., programs) very quickly even on workstations. There are two reasons. First, programming languages are considerably simpler than natural languages. And secondly, they have very efficient parsing methods, most notably LR. The LR parsing algorithm first precompiles a grammar into an LR parsing table, and at the actual parsing time, it performs shift-reduce parsing guided deterministically by the parsing table. So, the key to the LR efficiency is the grammar precompilation; something that had never been tried for natural languages in 1985. Of course, there was a good reason why LR had never been applied for natural languages; it was simply impossible. If your context-free grammar is sufficiently more complex than programming languages, its LR parsing table will have multiple actions, and deterministic parsing will be no longer possible.
Book Synopsis Generalized LR Parsing for General Context-free Grammars by : J. Rekers
Download or read book Generalized LR Parsing for General Context-free Grammars written by J. Rekers and published by . This book was released on 1991 with total page 31 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: "Which methods for parser generation and parsing are best suited for an interactive development system of syntax definitions? In this chapter we argue that a Generalized LR parsing algorithm is the best choice. We present an enhanced version of Tomita's GLR algorithm, and compare its efficiency with two competitors, YACC and Earley's algorithm."
Download or read book LR Parsing written by Nigel P. Chapman and published by CUP Archive. This book was released on 1987-12-17 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Parsing Techniques written by Dick Grune and published by Springer Science & Business Media. This book was released on 2007-10-29 with total page 677 pages. Available in PDF, EPUB and Kindle. Book excerpt: This second edition of Grune and Jacobs’ brilliant work presents new developments and discoveries that have been made in the field. Parsing, also referred to as syntax analysis, has been and continues to be an essential part of computer science and linguistics. Parsing techniques have grown considerably in importance, both in computer science, ie. advanced compilers often use general CF parsers, and computational linguistics where such parsers are the only option. They are used in a variety of software products including Web browsers, interpreters in computer devices, and data compression programs; and they are used extensively in linguistics.
Book Synopsis Drit Parser: a Generalized LR Parsing Algorithm Using Dot Reverse Item by : Shin Sedai Konpyūta Gijutsu Kaihatsu Kikō (Japan)
Download or read book Drit Parser: a Generalized LR Parsing Algorithm Using Dot Reverse Item written by Shin Sedai Konpyūta Gijutsu Kaihatsu Kikō (Japan) and published by . This book was released on 1992 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Drit parser, a generalized LR parsing algorithm using dot reverse system by : Hozumi Tanaka
Download or read book Drit parser, a generalized LR parsing algorithm using dot reverse system written by Hozumi Tanaka and published by . This book was released on 1992 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Generalised Probabilistic LR Parsing of Natural Language (corpora) with Unification-based Grammars by : E. J. Briscoe
Download or read book Generalised Probabilistic LR Parsing of Natural Language (corpora) with Unification-based Grammars written by E. J. Briscoe and published by . This book was released on 1991 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Implementation and Evaluation of Yet Another Generalized LR Parsing Algorithm by : K. G. Suresh
Download or read book Implementation and Evaluation of Yet Another Generalized LR Parsing Algorithm written by K. G. Suresh and published by . This book was released on 1992 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: "This paper presents an implementation and evaluation of our new generalized LR parsing algorithm called Yet Another Generalized LR parsing algorithm (YAGLR). In its original version, YAGLR uses graph- structured stack (GSS) whereas in the preliminary implementation we use tree-structured stack (trss). The merge operation of stack in our algorithm is deeper than top nodes and is effective. Hence the parsing time and the reduction in memory space are remarkable. Due to effective merge operations, even when using trss, we retain packed nature of GSS and thus not causing heavy loss of memory space. Through reduce actions, YAGLR creates items called drit which are symmetrically different from Earley's item. The advantages in creating drit are realized. Through our implementation, we practically prove that for a context-free grammar with reasonable size and complexity, YAGLR's parsing time is in the order of n3, where n is the length of an imput sentence. We conclude that YAGLR has the advantages of both Earley's and Tomita's algorithm."
Book Synopsis Introduction to Compilers and Language Design by : Douglas Thain
Download or read book Introduction to Compilers and Language Design written by Douglas Thain and published by Lulu.com. This book was released on 2019-07-24 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: A compiler translates a program written in a high level language into a program written in a lower level language. For students of computer science, building a compiler from scratch is a rite of passage: a challenging and fun project that offers insight into many different aspects of computer science, some deeply theoretical, and others highly practical. This book offers a one semester introduction into compiler construction, enabling the reader to build a simple compiler that accepts a C-like language and translates it into working X86 or ARM assembly language. It is most suitable for undergraduate students who have some experience programming in C, and have taken courses in data structures and computer architecture.
Book Synopsis Generalized LR Parsing for Speech Understanding by : Hiroaki Saito
Download or read book Generalized LR Parsing for Speech Understanding written by Hiroaki Saito and published by . This book was released on 1992 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt: To recover these cases, the 'gap-filling' technique is introduced. The GLR parser with the gap-filling function puts a fake nonterminal symbol at the noisy portion. That nonterminal is resolved, for example, by re-utterance of that portion efficiently by using the previous parse record. This gap-filling technique enhances the robustness of the GLR parsing significantly. A Japanese-to-English speech translation system using the GLR phoneme parser was built as a practical speech understanding system. This system was the first speech-to-speech translator in the world."
Book Synopsis Scannerless Generalized-LR Parsing by : Eelco Visser
Download or read book Scannerless Generalized-LR Parsing written by Eelco Visser and published by . This book was released on 1997 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Generalized LR Parser/compiler Version 8.1 by : Masaru Tomita
Download or read book The Generalized LR Parser/compiler Version 8.1 written by Masaru Tomita and published by . This book was released on 1988 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Recent Advances in Parsing Technology by : H. Bunt
Download or read book Recent Advances in Parsing Technology written by H. Bunt and published by Springer Science & Business Media. This book was released on 1996-08-31 with total page 436 pages. Available in PDF, EPUB and Kindle. Book excerpt: In Marcus (1980), deterministic parsers were introduced. These are parsers which satisfy the conditions of Marcus's determinism hypothesis, i.e., they are strongly deterministic in the sense that they do not simulate non determinism in any way. In later work (Marcus et al. 1983) these parsers were modified to construct descriptions of trees rather than the trees them selves. The resulting D-theory parsers, by working with these descriptions, are capable of capturing a certain amount of ambiguity in the structures they build. In this context, it is not clear what it means for a parser to meet the conditions of the determinism hypothesis. The object of this work is to clarify this and other issues pertaining to D-theory parsers and to provide a framework within which these issues can be examined formally. Thus we have a very narrow scope. We make no ar guments about the linguistic issues D-theory parsers are meant to address, their relation to other parsing formalisms or the notion of determinism in general. Rather we focus on issues internal to D-theory parsers themselves.
Book Synopsis Generalised LR Parsing Algorithms by :
Download or read book Generalised LR Parsing Algorithms written by and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Generalized Left-Corner Parsing by : Mark-Jan Nederhof
Download or read book Generalized Left-Corner Parsing written by Mark-Jan Nederhof and published by . This book was released on 1992 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: "We show how techniques known from generalized LR parsing can be applied to left-corner parsing. The resulting parsing algorithm for context-free grammars has some advantages over generalized LR parsing: the sizes and generation times of the parsers are smaller, the produced output is more compact, and the basic parsing technique can more easily be adapted to arbitrary context-free grammars."
Book Synopsis The Oxford Handbook of Computational Linguistics by : Ruslan Mitkov
Download or read book The Oxford Handbook of Computational Linguistics written by Ruslan Mitkov and published by Oxford University Press. This book was released on 2004 with total page 808 pages. Available in PDF, EPUB and Kindle. Book excerpt: This handbook of computational linguistics, written for academics, graduate students and researchers, provides a state-of-the-art reference to one of the most active and productive fields in linguistics.
Download or read book Parsing Schemata written by Klaas Sikkel and published by Springer. This book was released on 2013-11-13 with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt: Parsing, the syntactic analysis of language, has been studied extensively in computer science and computational linguistics. Computer programs and natural languages share an underlying theory of formal languages and require efficient parsing algorithms. This introduction reviews the theory of parsing from a novel perspective. It provides a formalism to capture the essential traits of a parser that abstracts from the fine detail and allows a uniform description and comparison of a variety of parsers, including Earley, Tomita, LR, Left-Corner, and Head-Corner parsers. The emphasis is on context-free phrase structure grammar and how these parsers can be extended to unification formalisms. The book combines mathematical rigor with high readability and is suitable as a graduate course text.
