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| | Formal grammar - Wikipedia, the free encyclopedia |
 | | An analytic grammar, in contrast, is a set of rules that assume an arbitrary string to be given as input, and which successively reduce or analyze that input string yielding a final boolean, "yes/no" result indicating whether or not the input string is a member of the language described by the grammar. | | | For example, for context-free grammars there are well-known algorithms to generate efficient LL parsers and LR parsers. | | | Affix grammars and attribute grammars allow rewrite rules to be augmented with semantic attributes and operations, useful both for increasing grammar expressiveness and for constructing practical language translation tools. |
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http://en.wikipedia.org/wiki/Formal_grammar
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| | Attribute grammar - Wikipedia, the free encyclopedia |
| | In a practical way, an attribute grammar defines the information that will need to be in the abstract syntax tree in order to successfully perform semantic analysis. | | | When constructing a language translation tool, such as a compiler, an attribute grammar is the formal expression of the syntax-derived semantic checks associated with a grammar. | | | The strength of attribute grammars is that they can transport information from anywhere in the abstract syntax tree to anywhere else, in a controlled way. |
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http://en.wikipedia.org/wiki/Attribute_grammar
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| | Bibliography on Attribute Grammars |
| | Attribute grammars for the heuristic translation of query languages. | | | Attribute grammars are a useful formalism for the specification of computations on structured terms. | | | The transformation engine of SIMON is an amalgamation of syntax-directed computation and content-oriented computation: the former is through higher-order (and related) extensions of attribute grammars, whereas the latter is done by externally defined programs and it is for computation not naturally amenable to the syntax-directed paradigm. |
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http://www-rocq.inria.fr/oscar/www/fnc2/AGabstract.html
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| | Program Transformation Wiki / Attribute Grammar |
| | Attribute grammars were introduced by DonaldKnuth in 1968 for the definition of the semantics of (programming) languages. | | | An attribute grammar is a specification that defines attributions of values to (abstract syntax) tree nodes. | | | Attribute grammars are mainly useful for program analysis |
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http://www.program-transformation.org/view/Transform/AttributeGrammar?rev=1.2
(82 words)
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| | [No title] |
| | This attribute is computed from the attributes of sub-expressions. | | | Evaluating Attributes - S attributed definitions are a very special case of attribute grammars - The most general method is to construct an ordering from the parse tree itself: Define a graph as follows. | | | For each attribute E.a to be computed add a node in the graph. |
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http://www.cs.berkeley.edu/~aiken/cs264/lectures/attribute-grammars
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| | Speech Recognition Grammar Specification Version 1.0 |
| | Grammar authors should consider the possibility that a grammar will be used to interpret input in a non-speech recognition device. | | | A user agent is a grammar processor that accepts user input and matches that input against a grammar to produce a recognition result that represents the detected input. | | | The grammars are intended for use by speech recognizers and other grammar processors so that developers can specify the words and patterns of words to be listened for by a speech recognizer. |
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http://www.w3.org/TR/speech-grammar
(11104 words)
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| | Attribute grammar notes |
| | Attribute grammars allow computation of attributes in the local sense. | | | Attribute grammars allow implicitly defined attributes to be associated with any rule (or non-leaf node in a parse tree). | | | Attribute grammars are slow w/o on-demand lazy eval / caching. |
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http://www.antlr.org/blog/attribute.grammar.notes.tml
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| | Domain Specific Meta Langauges |
| | Attribute coupled grammars of Ganzinger and Geirech [8] increase the modularity of attribute grammars by recognizing that the translation process is often broken into distinct phases mapping the source program through a series of intermediate representations until its final target language representation is generated. | | | Meta languages we give its solution in the form of an attribute grammar which uses three meta languages for defining attributes: a general purpose language similar to those in most attribute grammar systems, a macro language for defining the textual target code, and a simple language designed to specify an environment. | | | Attribute grammars [2,14] provide a convenient specification mechanism for defining language processing tools. |
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http://www-users.cs.umn.edu/~evw/Papers/como.html
(3763 words)
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| | [No title] |
| | X.a is how attributes are written, a is an attribute (value) of the grammar symbol X. Table 6.1 gives an attribute grammar for simple numbers, where the attribute being represented is the value of the number. | | | The difference is that 6.6 is referring to the parse tree or a derivation sequence associated with the grammar whereas 6.7 is referring to the grammar rules. | | | Note that + in the grammar is playing a dual role, one of grammar symbol and one of addition of values. |
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http://www.unf.edu/public/cop4620/ree/Notes/ch6.txt
(881 words)
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| | A brief introduction to definite clause grammars and definite clause translation grammars |
| | Informally, attribute grammars are sometimes described as context-free grammars with parameters on the non-terminals. | | | An attribute grammar is a context-free grammar in which the nodes of the parse tree carry attributes (annotations in the form of name-value pairs). | | | DCTGs closely resemble attribute grammars as described by [Knuth 1968] and later writers and it is a bit easier to handle complex or voluminous attribute value functions in DCTGs than in DCGs. |
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http://www.w3.org/People/cmsmcq/2004/lgintro.html
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| | RAGS - Survey of Grammar Models |
| | The only significance of the initial Christiansen grammar is that it becomes the language attribute of the root node of the parse tree. | | | Observe that each language attribute value, and therefore each grammar adaptation, in a Christiansen grammar is localized to a particular branch of the parse tree. | | | There is a remarkably close analogy between Chomsky grammars and Turing machines, if the latter are considered, not as a computational model per se, but as a grammar model. |
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http://web.cs.wpi.edu/~jshutt/thesis/survey.html
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| | WhyAttributeGrammarsMatter - TmrWiki |
| | Attribute grammars specify a language's semantics by 'decorating' a context free grammar with those attributes you are interested in. | | | Synthesized attributes are tupled and returned as the result of the computation. | | | The attribute grammar determines a computation over some data structure; the semantic functions correspond to the actual Haskell functions that perform the computation. |
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http://www.haskell.org/tmrwiki/WhyAttributeGrammarsMatter
(2817 words)
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| | Green Hat Journal: Attribute Grammar |
| | The last problem is computing attributes that depend on both inherited and synthesized attributes. | | | The attributes are not stored in the tree, they are recomputed every time you need them. | | | But by adding "hash consing" and memoization, an inefficient pure functional attribute grammar becomes an efficient, incremental implementation. |
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http://rover.cs.northwestern.edu/~surana/blog/past/000224.html
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| | Attribute Grammars |
| | An attribute grammar uses the context free grammar of a program as the framework on which to build the grammar. | | | An attribute grammar is a formal structure for recognizing the context sensitive part of a programming language. | | | A value in an attribute cannot be referenced before it is computed. |
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http://www.mcs.drexel.edu/~rweaver/COURSES/MCS360/TOPICS/ag.html
(210 words)
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| | [No title] |
| | Prepare a context-free grammar suitable for input to "slr". | | | In this directory are various programs that make up a Modular Attribute Grammar generator and evaluator as described in "Modular Attribute Grammars", by Gery Dueck and Gordon Cormack, to appear in Computer Journal (hopefully April 90). | | | slr - a program to read a grammar and produce parse tables, as described in "slr.doc". |
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http://plg.uwaterloo.ca/~ftp/mag/README
(302 words)
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| | Network Generating Attribute Grammar Encoding |
| | Extending this approach, we have devised an encoding system that uses an attribute grammar in which the evaluation of both synthesized and inherited attributes within a generated parse tree provides the details of the connectivity of the network. | | | The development and theoretical analysis of neural network architectures may be improved with the availability of techniques which allow the systematic representation and generation of classes of architectures. | | | Recent work on the genetic optimization of neural networks has led to new ideas on how to encode neural network architectures abstractly as grammars. |
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http://www.qucis.queensu.ca/home/browse/Publications/webstuff/1998_ijcnn1.htm
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| | Attribute Grammar Assignment |
| | That is, for each example, you should provide a small grammar, similar to the one at the top of the page, give its parse tree, and show how the values of the attributes are computed by walking the tree. | | | The remainder of the assignment asks you to attribute your grammar in order to check for certain properties of the syntaxes it is used to parse. | | | Be sure to describe the notation that you are using to specify the grammar (e.g. |
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http://www.cc.gatech.edu/classes/AY2006/cs6390_fall/hw/attgrm.html
(492 words)
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| | [No title] |
| | The action rules for L-attributed grammars, in which the attribute flow is depth-first left-to-right, can be evaluated in the order of the parse tree prediction for LL grammars. | | | ¡$ • ó — ó ö — ¨ Attribute Grammars ¨q Context-Free Grammars (CFGs) are used to specify the syntax of programming languages E.g. |
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http://www.cs.unca.edu/~bruce/Fall03/csci431/slides/ch4.ppt
(864 words)
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| | [No title] |
| | From our Attribute Grammar, we can see that each AG rule is to break down one none-terminal into one or more other none-terminals or terminals, and the concatenation of the right-hand-side components forms the result of the left-hand-side none-terminal. | | | If the test result is syntactically correct Prolog program, and follows the Attribute Grammar pattern without error message in it, then the testing is success. | | | All the Alloy specs are translated into Prolog with the syntax agreed to the Attribute Grammar. |
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http://www.nd.edu/~yzheng1/7MSE/4AssessEval.doc
(355 words)
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| | Hexapedia - Computer science |
| | In its most general sense, computer science (CS or compsci) is the study of computation and information processing, both in hardware and in software. | | | In practice, computer science includes a variety of topics relating to computers, which range from the abstract analysis of algorithms, formal grammars, etc. to more concrete subjects like programming languages, software, and computer hardware. | | | As a scientific discipline, it is distinct from mathematics, programming, software engineering, informatics, and computer engineering, although there are significant overlaps and no clear demarcation. |
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http://computer_science.en.hexafind.com
(129 words)
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| | Chapter 5 |
| | Attribute evaluation functions cannot be collected together into empty productions in an attribute grammar. | | | For every parse tree, construct graph with node for every attribute of every node of parse tree. | | | one can assign attribute values to nonterminal nodes of parse tree so that all attribute assertions hold. |
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http://www.cs.ndsu.nodak.edu/~kvanhorn/cs722/chap5.html
(1828 words)
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| | Attribute Grammar Systems Compilers Programming Computers |
| | - The formalism for the to attribute grammars related Affix Grammar over Finite Lattices developed at the University of Nijmegen is being applied to natural-language processing. | | | - The system generates efficient incremental attribute evaluators and was written by one of the attribute-grammar formalizers. | | | - The implemented programming language is based on an attribute grammar. |
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http://www.iaswww.com/ODP/Computers/Programming/Compilers/Attribute_Grammar_Systems
(147 words)
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| | [No title] |
| | There are Environment and Store attributes * which model, respectively, the static and dynamic semantics of the language. | | | For example, in nearly all denotational and * attribute-grammar definitions of programming languages, arithmetic and * logical operators are considered primitive. | | | Since the meta notation in most programming language * definitions is something other than the language itself, the "on faith" * aspect of the definition may seem more acceptable than in this case, where * the meta notation for the semantics of FMSL is FMSL itself. |
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http://www.csc.calpoly.edu/~gfisher/projects/fmsl/specification/fmsl.fmsl
(881 words)
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| | Attribute Grammar Example: Declaration Semantics |
| | This informal description of the semantics is sufficient explanation for a programmer to be able to write sensible declarations, but for purposes of automating type-checking (such as a compiler would do), a more formal, computational description of the semantics is desirable. | | | We now extend the above BNF grammar to an attribute grammar by introducing a type attribute for the symbols and giving a set of semantic rules for calculating the values of the attributes. | | | Use the given attribute grammar to draw a decorated parse tree for the declaration list |
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http://www.emunix.emich.edu/~remmers/337/decl_semantics.html
(258 words)
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| | "Fun" With Attribute Grammars |
| | However, the optimizations are specified in the attribute grammar of the target langauge! | | | The aim of the work in this paper is to create retargetable comilers with attribute grammars. | | | Theory of attribute grammars was worked out in the 70's |
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http://www.ccs.neu.edu/home/matthias/369-s04/Transcripts/FunWAttributeGrammars-WithCommentsFromJeff.html
(472 words)
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| | A Practical Attribute Grammar Circularity Test |
| | Parallel attribute evaluation - structure of evaluators and detection of parallelism. | | | Efficient implementations for two optimisations to Knuth's attribute grammar circularity test are described. | | | In: Deransart P, Jourdan M (eds.), Attribute Grammars and their Applications (Lecture Notes in Computer Science 461), pp 61-75 (1990). |
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http://www.mattababy.org/~belmonte/Publications/Papers/88_TR
(85 words)
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| | Rob Relyea : Attribute grammar for xaml attributes |
| | It’s a mistake for Microsoft to keep XAML spec changes private no matter how badly they want to be the first to ship their design. | | | ComputedValues - go through 1 well defined extension mechanism to support scenarios that need to be handled in attributes that map to many different Types. | | | As part of this change, the flexibility that people have with compact syntax will be reduced. |
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http://www.longhornblogs.com/rrelyea/archive/2004/10/09/5955.aspx
(871 words)
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| | [No title] |
| | A set of generic, off-the-shelf attribute grammar components have been incorporated to the system. | | | Matthijs Kuiper started constructing Lrc during his research on parallel attribute evaluation and he is the main developer of the system. | | | After having introduced higher-order attribute grammars, Harald Vogt, Doaitse Swierstra and Matthijs Kuiper extended the Lrc system to process higher-order attribute grammars. |
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http://www.di.uminho.pt/~jas/Research/LRC/lrc.html
(1005 words)
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| | [No title] |
| | Attributes can either be inherited or synthesized. ó ¨ Attributes - Contd ª ¨w An attribute of a grammar symbol is synthesized if it is computed from the attributes of its children in the parse tree corresponding to the rightmost derivation. | | | An attribute of a grammar symbol is inherited, if it is computed from the attributes of its parents and siblings. ªt ¶ ó ¨ Attributes - Contd ª ¨² Example: Declarations--> Type varlist varlist --> varlist, var | | | Example attributes could be value, type, font-size, base line etc. For each separate instance of the grammar symbol, there will be separate instance of the attribute. |
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http://www.cs.rpi.edu/~moorthy/Courses/compiler98/Lectures/lecturesinppt/lecture9.ppt
(148 words)
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| | Energy Citations Database (ECD) - Energy and Energy-Related Bibliographic Citations |
| | Availability information may be found in the Availability, Publisher, Research Organization, Resource Relation and/or Author (affiliation information) fields and/or via the "Full-text Availability" link. | | | Energy Citations Database (ECD) Document #7106897 - Attribute grammar inversion and source-to-source translation |
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http://www.osti.gov/energycitations/product.biblio.jsp?osti_id=7106897
(65 words)
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| | Comp.compilers: Attribute Grammar Technology |
| | grammar, how does it differ structurally from other kinds of grammars, | | | Attribute Grammar Technology crocus.waterloo.edu!rmpinchback@RELAY.CS.NET (Reid M. Pinchback) (1988-08-09) | | | I've heard the buzz-phrase "attribute grammar" before, but I've never |
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http://compilers.iecc.com/comparch/article/88-08-012
(73 words)
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| | attribute_grammar - OneLook Dictionary Search |
| | General Web searches for dictionaries containing attribute grammar: | | | Other places to try your search for attribute grammar: |
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http://www.onelook.com/?w=attribute_grammar&other=1
(72 words)
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| | Attribute Translation System definition of Attribute Translation System in computing dictionary - by the Free Online ... |
| | Attribute Translation System - (ATS) A BNF-based parser generator from the University of Saskatchewan(?). | | | Attribute Translation System definition of Attribute Translation System in computing dictionary - by the Free Online Dictionary, Thesaurus and Encyclopedia. | | | This information should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional. |
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http://computing-dictionary.thefreedictionary.com/Attribute+Translation+System
(113 words)
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| | Hexapedia - Grammar |
| | Grammar is the study of the rules governing the use of a language. |
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http://grammar.en.hexafind.com
(42 words)
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| | No match for attribute grammar |
| | Sorry, the term attribute grammar is not in the dictionary. | | | Last modified: Sat Feb 17 16:22:35 GMT 2001 | | | Nearby terms: atom « atomism « attribute « Aufklaerung » Augustine » Austin John » Austin John Langshaw |
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http://lgxserver.uniba.it/lei/foldop/foldoc.cgi?attribute+grammar
(47 words)
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