Formal languages

Growing context-sensitive grammar

In formal language theory, a growing context-sensitive grammar is a context-sensitive grammar in which the productions increase the length of the sentences being generated. These grammars are thus noncontracting and context-sensitive. A growing context-sensitive language is a context-sensitive language generated by these grammars. In these grammars the "start symbol" S does not appear on the right hand side of any production rule and the length of the right hand side of each production exceeds the length of the left side, unless the left side is S. These grammars were introduced by Dahlhaus and Warmuth. They were later shown to be equivalent to the . Membership in any growing context-sensitive language is polynomial time computable; however, the uniform problem of deciding whether a given string belongs to the language generated by a given growing or acyclic context-sensitive grammar is NP-complete. (Wikipedia).

Video thumbnail

7.1: Intro to Session 7: Context-Free Grammar - Programming with Text

This video introduces Session 7: Context-Free Grammar from the ITP course "Programming from A to Z". A Context-Free Grammar is a set of recursive "replacement" rules to generate text. In this session, I discuss two JavaScript libraries: Tracery and RiTa.js for working with context-free gr

From playlist Programming with Text - All Videos

Video thumbnail

Javascript Context Tutorial - What makes Javascript Weird...and Awesome Pt5

View whole series here: https://www.youtube.com/playlist?list=PLoYCgNOIyGABI011EYc-avPOsk1YsMUe_ Call, Apply & Bind are avoided by many JS developers, but it doesn't have to be that way. Context is a simple concept that creates complicated realities for developers. In this javascript tu

From playlist Javascript Tutorial For Beginners

Video thumbnail

How to Improve Your Vocabulary - Study Tips - Build Vocab

Are you always searching for the right word? Today, we offer our best tips on how to improve your vocabulary. When you grow your vocabulary, it has a positive effect on ALL areas of communication - whether you are speaking or writing formally or informally. Being able to accurately descri

From playlist It Starts With Literacy

Video thumbnail

ADVERBS of TIME, FREQUENCY, LOCATION, and MANNER - ENGLISH GRAMMAR

We talk about adverbs of location, adverbs of time, adverbs of manner, and adverbs of frequency. Adverbs modify verbs or add background information for an entire sentence. #EnglishGrammar #Grammar #English If you want to support the channel, hit the "JOIN" button above and pick a channel

From playlist English Grammar

Video thumbnail

Compilation – Why learn about compilers?

As you will see when you watch this series, compilation involves a diverse range of themes in the field of computer science including high and low level programming paradigms, the definition of context free grammars, the application of dynamic data structures such as stacks, linked lists,

From playlist Compilation

Video thumbnail

RubyConf 2015 - Botany with Bytes by Lito Nicolai

Botany with Bytes by Lito Nicolai Plants are tiny computers. As they grow, the sprouts are computing from first principles how to be a plant. We’ll see how they do it! This talk uses Ruby and the ‘graphics’ gem to build models of all kinds of plants, from algae blooms to juniper branches

From playlist RubyConf 2015

Video thumbnail

LA Rubyconf 2015- Botany with Bytes by Lito Nicolai

Botany with Bytes Plants are tiny computers. As they grow, the sprouts are computing from first principles how to be a plant. We’ll see how they do it! This talk uses Ruby and the ‘graphics’ gem to build models of all kinds of plants, from algae blooms to juniper branches. We’ll touch on

From playlist LA Rubyconf 2015

Video thumbnail

Context Free Languages

Theory of Computation 5. Context Free Languages ADUni

From playlist [Shai Simonson]Theory of Computation

Video thumbnail

SOC104 - The Spread of English

In this brief E-Lecture, Prof. Handke discusses the development of English towards a global language incorporating the three-circles model by Kachru.

From playlist VLC205 - Varieties of English

Video thumbnail

Language Change

In this module, Prof. Simon Horobin (University of Oxford) introduces the concept of semantic change, focusing in particular on the word 'literally'. As we move through the module, we consider: (i) the etymology of the word from the Latin 'littera' (letter), and the original meaning of the

From playlist English Language

Video thumbnail

Psych9B. Psychology Fundamentals. Lecture 12

UCI Psych 9B: Psych Fundamentals (Fall 2015) Lec 12. Psych Fundamentals View the complete course: http://ocw.uci.edu/courses/psych_9bpsy_beh_11b_psychology_fundamentals.html Instructor: Mark Steyvers, Ph.D. License: Creative Commons CC-BY-SA Terms of Use: http://ocw.uci.edu/info. More cou

From playlist Psych 9B: Psych Fundamentals

Video thumbnail

Psych9B. Psychology Fundamentals. Lecture 12

UCI Psych 9B: Psych Fundamentals (Fall 2015) Lec 12. Psych Fundamentals View the complete course: http://ocw.uci.edu/courses/psych_9bpsy_beh_11b_psychology_fundamentals.html Instructor: Mark Steyvers, Ph.D. License: Creative Commons CC-BY-SA Terms of Use: http://ocw.uci.edu/info. More cou

From playlist Psych 9B: Psych Fundamentals

Video thumbnail

Monadic Parsers at the Input Boundary

When reading a byte stream over the process I/O boundary, the first thing which everyone should do is to parse the byte stream with a monadic parser. The talk will discuss Processes and input byte streams. Monadic parsers. What they are and why they matter. The design and use of the pure

From playlist Functional Programming

Video thumbnail

Morpheme Based Model and Word Based Model | Morphology Linguistics

We introduce the word-based model and morpheme-based model with lexical entries, selectional restrictions, and meanings. We talk about affixation, compounding, backformation, internal change, vowel lengthening, suprafixes, duplifixes, partial reduplication, and reduplication. 0:00 Introdu

From playlist Morphology - Linguistics

Video thumbnail

Black Hat USA 2010: Exploiting the Forest with Trees 2/5

Speakers: Meredith L. Patterson, Len Sassaman One of the most difficult aspects of securing a protocol implementation is simply bounding the scope of the attack surface: how do you tell where attacks are likely to crop up? Historically, variations between implementations have led to some

From playlist Black Hat USA 2010

Video thumbnail

More lemmas, CYK

Theory of Computation 9. More lemmas, CYK ADUni

From playlist [Shai Simonson]Theory of Computation

Video thumbnail

How a Computer know a Sentence is Grammatical: Context Free Grammars [Lecture]

This is a single lecture from a course. If you you like the material and want more context (e.g., the lectures that came before), check out the whole course: https://boydgraber.org/teaching/CMSC_723/ (Including homeworks and reading.) Music: https://soundcloud.com/alvin-grissom-ii/review

From playlist Computational Linguistics I

Related pages

Context-sensitive grammar | Context-sensitive language | Noncontracting grammar | Complexity of constraint satisfaction