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Parsing related to computer science
processing, deterministic parsing refers to parsing algorithms that do not backtrack. LR-parsers are an example. (This meaning of the words "deterministic" and
Deterministic_parsing
Parser algorithm for languages
A GLR parser (generalized left-to-right rightmost derivation parser) is an extension of an LR parser algorithm to handle non-deterministic and ambiguous
GLR_parser
Formal grammar derived from a deterministic pushdown automaton
the parsing part of the compiler simplified the task. Deterministic context-free grammars were particularly useful because they could be parsed sequentially
Deterministic context-free grammar
Deterministic_context-free_grammar
Type of a context-free grammar
is about the formal properties of LL grammars; for parsing, see LL parser or recursive descent parser. Given a natural number k ≥ 0 {\displaystyle k\geq
LL_grammar
Analysing a string of symbols, according to the rules of a formal grammar
analysis Parsing expression grammar Pratt parser Program transformation Shallow parsing Semantic parsing Sentence processing Syntactic parsing (computational
Parsing
Top-down parser that parses input from left to right
Comparison of parser generators Parse tree Top-down parsing Bottom-up parsing Rosenkrantz, D. J.; Stearns, R. E. (1970). "Properties of Deterministic Top Down
LL_parser
Type of parser in computer science
LR parsers are a type of bottom-up parser that analyse deterministic context-free languages in linear time. There are several variants of LR parsers: SLR
LR_parser
Automatic analysis of syntactic structure of natural language
for or a subproblem of syntactic parsing. Syntactic parses can be used for information extraction (e.g. event parsing, semantic role labelling, entity
Syntactic parsing (computational linguistics)
Syntactic_parsing_(computational_linguistics)
Mathematical model of computation
machines are of two types—deterministic finite-state machines and non-deterministic finite-state machines. For any non-deterministic finite-state machine,
Finite-state_machine
This table compares parser generators with parsing expression grammars, deterministic Boolean grammars. This table compares parser generator languages
Comparison of parser generators
Comparison_of_parser_generators
Type of grammar for describing formal languages
but are less likely to be useful for parsing natural languages where disambiguation may have to be global. A parsing expression is a kind of pattern that
Parsing_expression_grammar
Parsing beginning from lowest-level structures
grammars than deterministic top-down parsers do. Bottom-up parsing is sometimes done by backtracking. But much more commonly, bottom-up parsing is done by
Bottom-up_parsing
Subset of languages in formal theory
In formal language theory, deterministic context-free languages (DCFL) are a proper subset of context-free languages. They are context-free languages
Deterministic context-free language
Deterministic_context-free_language
Type of parser in computer science
(Oct)): 1007–1022. doi:10.1145/322344.322350. Parsing Simulator This simulator is used to generate parsing tables LALR and resolve the exercises of the
LALR_parser
Algorithm used to analyze and process programming languages
typically called "parsing tables". The parsing tables of the LR(1) parser are parameterized with a lookahead terminal. Simple parsing tables, like those
Canonical_LR_parser
Software programming optimization technique
of parsing in 1995 by Mark Johnson and Jochen Dörre. In 2002, it was examined in considerable depth by Bryan Ford in the form called packrat parsing. In
Memoization
Rule system for formal languages
expressions. LR parsing extends LL parsing to support a larger range of grammars; in turn, generalized LR parsing extends LR parsing to support arbitrary
Context-free_grammar
Class of bottom-up parsing methods
parsing methods most commonly used for parsing programming languages, LR parsing and its variations, are shift-reduce methods. The precedence parsers
Shift-reduce_parser
Type of parser
it takes parsing expression grammars (PEGs) as input rather than LL grammars. In 1970, Alexander Birman laid the groundwork for packrat parsing by introducing
Packrat_parser
Natural language processing task
meaning. Semantic parsing can thus be understood as extracting the precise meaning of an utterance. Applications of semantic parsing include machine translation
Semantic_parsing
Parsing algorithm for context-free languages
behind "generalising" deterministic parsers had already been developed by Bernard Lang in 1974, it wasn't until 1999 that a GLL parser was implemented, although
GLL_parser
Study of abstract machines and automata
Schmeiser; David T. Barnard (1995). Producing a top-down parse order with bottom-up parsing. Elsevier North-Holland. Igor Aleksander; F. Keith Hanna (1975)
Automata_theory
packrat parsing to handle these grammars in linear time by employing memoization, at the cost of heap space. It is possible to support linear-time parsing of
Syntactic_predicate
Type of context-free grammar
context-sensitive parsing rules, so the overall phrase grammar is unambiguous.[citation needed] Some parsing algorithms (such as Earley or GLR parsers) can generate
Ambiguous_grammar
Hierarchy of classes of formal grammars
and scope. Often a subset of grammars is used to make parsing easier, such as by an LL parser. For example, the context-free language L = { a n b n ∣
Chomsky_hierarchy
Type of automaton
capable than Turing machines (see below). Deterministic pushdown automata can recognize all deterministic context-free languages while nondeterministic
Pushdown_automaton
Compiler-generation system
used to generate lexical and syntactic analyzers (parsers) (both deterministic and non-deterministic) for all kinds of context-free grammars (CFGs) as
SYNTAX
lookahead LR parser (LALR) generator is a software tool that reads a context-free grammar (CFG) and creates an LALR parser which is capable of parsing files
LALR_parser_generator
Type of finite-state machine in automata theory
In automata theory, a finite-state machine is called a deterministic finite automaton (DFA), if each of its transitions is uniquely determined by its
Nondeterministic finite automaton
Nondeterministic_finite_automaton
teach compiler construction in the 1970s. LR parsing can handle a larger range of languages than LL parsing, and is also better at error reporting,[citation
History of compiler construction
History_of_compiler_construction
Formal language models
grammar formalism is said to have polynomial parsing if its membership problem can be solved in deterministic polynomial time. This is the problem to decide
Mildly context-sensitive grammar formalism
Mildly_context-sensitive_grammar_formalism
Complexity class
after Stephen Cook) is the complexity class of problems solvable by a deterministic Turing machine in polynomial time (class P) and polylogarithmic space
SC_(complexity)
and Zig. It compiles declarative regular expression specifications to deterministic finite automata. Originally written by Peter Bumbulis and described
Re2c
Structure of a formal language
Sleator, Daniel D. & Temperly, Davy, "Parsing English with a Link Grammar," Third International Workshop on Parsing Technologies, 1993. (Revised version
Formal_grammar
Form of source code, without regard to meaning
distinction between parsing and execution, and makes syntax analysis an undecidable problem in these languages, meaning that the parsing phase may not finish
Syntax (programming languages)
Syntax_(programming_languages)
for parsing context-free grammars in Chomsky normal form Earley parser: another O(n3) algorithm for parsing any context-free grammar GLR parser: an algorithm
List_of_algorithms
longer deterministic. The parser cannot decide whether to shift or reduce next, or cannot decide between two candidate reductions. SLR parsers use a Follow(A)
SLR_grammar
In the automata theory, a tagged deterministic finite automaton (TDFA) is an extension of deterministic finite automaton (DFA). In addition to solving
Tagged Deterministic Finite Automaton
Tagged_Deterministic_Finite_Automaton
Sequence of characters that forms a search pattern
and to increase their scope and capabilities to allow the definition of parsing expression grammars. The result is a mini-language called Raku rules, which
Regular_expression
Formal language generated by context-free grammar
producing this tree is called parsing. Known parsers have a time complexity that is cubic in the size of the string that is parsed. Formally, the set of all
Context-free_language
of operator-precedence languages is their local parsability, that enables efficient parallel parsing. There are also characterizations based on an equivalent
Operator-precedence_grammar
UNIX program for lexical analysis
yywrap(void){return 1;} These programs perform character parsing and tokenizing via the use of a deterministic finite automaton (DFA). A DFA is a theoretical machine
Flex (lexical analyzer generator)
Flex_(lexical_analyzer_generator)
Collection's 4.3 release, GCJ (its Java compiler) is using the ECJ parser front-end for parsing Java. Examples of free runtime environments include Kaffe, SableVM
Free_Java_implementations
128-bit number used to identify information in computer systems
many computing platforms providing support for generating them and for parsing their textual representation. Apollo Computer used UUIDs in the Network
Universally_unique_identifier
Ordering of strings in alphabetical order with numeric value consideration
enforce an ordering where "01" follows "1" (or vice versa) to ensure a deterministic sort. Whitespace: Most implementations ignore leading or trailing whitespace
Natural_sort_order
Regular expression denial-of-service attack
automaton, several possibilities exist: the engine may convert it to a deterministic finite-state automaton (DFA) and run the input through the result; the
ReDoS
Class of problems solvable in polynomial time
Complexity of Some Extensions of RCG Parsing" (PDF). Proceedings of the Seventh International Workshop on Parsing Technologies (IWPT 2001). Beijing, China
P_(complexity)
under Apache License 2.0. SableCC includes the following features: Deterministic finite automaton (DFA)-based lexers with full Unicode support and lexical
SableCC
Compiler generator
source language and generates a scanner and a parser for that language. The scanner works as a deterministic finite automaton. It supports Unicode characters
Coco/R
Rewriting system and type of formal grammar
production for each symbol, then the L-system is said to be deterministic (a deterministic context-free L-system is popularly called a D0L system). If
L-system
Automated generation of a computer program
front-end for the programming language of interest, including source code parsing, building internal program representations of code structures, the meaning
Program_transformation
Type of decision problem in computer science
showed that every (possibly non-deterministic) program computable in linear space could be converted into the parsing of a context-sensitive grammar,
PSPACE-complete
Converting computer code into a machine readable form
to generate code at runtime, a non-deterministic finite-state machine is often generated instead of a deterministic one because the former can usually
Code_generation_(compiler)
Function defined on formal languages in computer science
to strings of length less than dR. Furthermore, there is a complete deterministic finite automaton with dR states that recognises the regular language
Brzozowski_derivative
629 also known as Multi-transmitter Data Bus ARINC 664 also known as Deterministic Ethernet ARINC 825 Controller Area Network (CAN) Common Airborne Instrumentation
Bus_monitoring
that uses hand-designed type of finite-state machine (FSM) termed a deterministic finite automaton (DFA) grammar as a language model. It can be used to
Julius_(software)
Escape characters making an expression unreadable
characters to avoid delimiter collision (i.e., to avoid ambiguous, non-deterministic interpretations in the program). Escape characters are usually backslashes
Leaning_toothpick_syndrome
Academic journal
Description: LR parser, which does bottom up parsing for deterministic context-free languages. Later derived parsers, such as the LALR parser, have been and
Information_and_Computation
American computer scientist
working with Seymour Ginsburg and Michael A. Harrison in context-sensitive parsing using the stack automaton model. Besides establishing the normal form (Greibach
Sheila_Greibach
Controlled language
text is a coherent entity of anaphorically linked sentences. The Attempto Parsing Engine (APE) translates ACE texts unambiguously into discourse representation
Attempto_Controlled_English
Set of rules defining correctly structured Prolog programs
differences. A larger example will show the potential of using Prolog in parsing. Given the sentence expressed in Backus–Naur form: <sentence> ::= <stat_part>
Prolog_syntax_and_semantics
deterministic and continuous. GeoGebra can be deterministic or continuous (one can change it in preferences). All constructions in the deterministic programs
List of interactive geometry software
List_of_interactive_geometry_software
Study of programming languages via mathematical objects
semantics to non-deterministic sequential programs. Writing P for a power-domain constructor, the domain P(D) is the domain of non-deterministic computations
Denotational_semantics
Canadian linguist
Linguistics led to the formulation of the Asymmetry Recovering Parser, generating deterministic parses for linguistic expressions. She also developed a search
Anna_Maria_Di_Sciullo
Description of a type of XML document
conceptually separate operation from XML parsing. In practice, however, many schema validators are integrated with an XML parser. There are several different languages
XML_schema
Elementary cellular automaton
places. Based on this description, Krug & Spohn (1988) call Rule 184 a deterministic version of a "kinetic Ising model with asymmetric spin-exchange dynamics"
Rule_184
Algorithm to transform a regular expression into a finite automaton
same languages, that is, the regular languages. An NFA can be made deterministic by the powerset construction and then be minimized to get an optimal
Thompson's_construction
Language defined by context-sensitive grammar
Turing machine, also called a linear bounded automaton. That is a non-deterministic Turing machine with a tape of only k n {\displaystyle kn} cells, where
Context-sensitive_language
Machine-learning process
enable the parsing of phrases from some language. The fitness operator for the grammar is based upon some measure of how well it performed in parsing some group
Grammar_induction
Category of formal programming language semantics
program, because the program could be nondeterministic, and even for a deterministic program there can be many computation sequences since the semantics
Operational_semantics
American computer scientist (1936–2026)
Answers a basic question about deterministic pushdown automata: it is decidable whether a given deterministic pushdown automaton accepts a regular
Richard_E._Stearns
Computer science and linguistics concept relating to non-terminal production
finite or infinite language. Nederhof, Mark-Jan; Satta, Giorgio (2002), "Parsing Non-recursive Context-free Grammars", Proceedings of the 40th Annual Meeting
Recursive_grammar
British American computer scientist
earlier work in Automata Theory includes an algorithm for context-free parsing, which is still the asymptotically fastest known. He also works in Computational
Leslie_Valiant
Educational software
such as converting a nondeterministic finite automaton (NFA) to a deterministic finite automaton (DFA). JFLAP is developed and maintained at Duke University
JFLAP
Technique in machine learning
March 29, 2024. "Baby Steps: How "Less is More" in unsupervised dependency parsing" (PDF). Retrieved March 29, 2024. "Self-paced learning for latent variable
Curriculum_learning
Electronic communications protocol
computers can use. Aside from latency advantages, performance is more deterministic because SBE messages are constrained by templates and fixed-length data
Financial Information eXchange
Financial_Information_eXchange
Advanced lexical analyzer generator
generators used in practice, including Flex, Ragel, and RE/flex are based on deterministic finite automata (DFA) for efficient pattern matching, despite the theoretical
RE/flex
Server for the Domain Name System
DNSSEC validation, kzonesign and kxdpgun utilities, DoH support in kdig, deterministic ECDSA support, on-line backup of persistent data. New in 3.1.0: basic
Knot_DNS
Overview of and topical guide to computer programming
Comparison of Visual Basic and Visual Basic .NET Programmer Source code Parsing Compilation Preprocessing Translation Assembly Linking Compiler optimization
Outline of computer programming
Outline_of_computer_programming
Remembered information in a computer system
computer programs, and computers. The output of a digital circuit or deterministic computer program at any time is completely determined by its current
State_(computer_science)
Type of formal grammar
introduced the concept of deterministic LBA in 1960. Peter S. Landweber published in 1963 that the language accepted by a deterministic LBA is context sensitive
Context-sensitive_grammar
Form for context-free grammars
that every context-free language can be accepted by a real-time (non-deterministic) pushdown automaton, i.e., the automaton reads a letter from its input
Greibach_normal_form
Software engineering concept
examples of context models occur under other domains. In the situation of parsing a grammar, a context model defines the surrounding text of a lexical element
Context_model
Deterministic finite automaton accepting set of all suffixes of particular string
terms of automata theory, a suffix automaton is the minimal partial deterministic finite automaton that recognizes the set of suffixes of a given string
Suffix_automaton
Categories of symbols in formal grammars
languages. These are exactly the languages that can be recognized by a non-deterministic push down automaton. Context-free languages are the theoretical basis
Terminal and nonterminal symbols
Terminal_and_nonterminal_symbols
the iterative philosophy of prototyping. information space analysis A deterministic method, enhanced by machine intelligence, for locating and assessing
Glossary_of_computer_science
Programming language that uses first order logic
languages. In particular, Prolog's non-deterministic evaluation strategy can be problematic when programming deterministic computations, or when even using
Prolog
Fixing defects in an engineered system
easier to debug. For example, a bug in a compiler can make it crash when parsing a large source file. However, after simplification of the test case, only
Debugging
Finite state machine with two tapes (input, output)
as a translator or relater between strings in a set. In morphological parsing, an example would be inputting a string of letters into the FST, the FST
Finite-state_transducer
Prolog is particularly useful for symbolic reasoning, database and language parsing applications. Artificial Intelligence Markup Language (AIML) is an XML
List of programming languages for artificial intelligence
List_of_programming_languages_for_artificial_intelligence
Encryption method
not use convergent encryption in the first place. Salt (cryptography) Deterministic encryption Secure Data Deduplication, Mark W. Storer Kevin Greenan Darrell
Convergent_encryption
Programming language
is deterministically based on success/failure, i.e., no other alternatives are tried when the current one succeeds. This idea is also used in parsing expression
Compiler_Description_Language
notion of a region in. However, the developed parsing algorithm is non-deterministic, i.e., the parse tree is not unique for a given diagram. Jussi Vanhatalo
Program_structure_tree
Diagram of behavior of finite state systems
the accept state(s) function as "Final" (halt, trapped) states. For a deterministic finite automaton (DFA), nondeterministic finite automaton (NFA), generalized
State_diagram
its bare form is equivalent to a deterministic finite automaton in computational power, and therefore can only parse a regular language. We define a standard
Read-only_Turing_machine
Reformulation of Floyd-Hoare logic
given until here with non-deterministic statements. Indeed, GCL aims to be a formal notation to define algorithms. Non-deterministic statements represent choices
Predicate transformer semantics
Predicate_transformer_semantics
Type of formal grammar
Most importantly, there are generalizations of the main context-free parsing algorithms, including the linear-time recursive descent, the cubic-time
Conjunctive_grammar
Implementation of SSL and TLS protocols
send an incorrectly formatted ClientHello message, leading to OpenSSL parsing more than the end of the message. Assigned the identifier CVE-2011-0014
OpenSSL
Measure of dependence between two variables
extreme, if X {\displaystyle X} is a deterministic function of Y {\displaystyle Y} and Y {\displaystyle Y} is a deterministic function of X {\displaystyle X}
Mutual_information
XML schema language
the extension ".rnc" is used. Relax NG schemas are not necessarily "deterministic" or "unambiguous". Relax NG schemas can be converted to DTDs by applying
RELAX_NG
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DETERMINISTIC PARSING
DETERMINISTIC PARSING
DETERMINISTIC PARSING
DETERMINISTIC PARSING
DETERMINISTIC PARSING
DETERMINISTIC PARSING
DETERMINISTIC PARSING
DETERMINISTIC PARSING
DETERMINISTIC PARSING
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