A two-level grammar is a formal grammar that is used to generate another formal grammar [1], such as one with an infinite rule set [2]. This is how a Van Wijngaarden grammar was used to specify Algol 68 [3]. A context free grammar that defines the rules for a second grammar can yield an effectively infinite set of rules for the derived grammar. This makes such two-level grammars more powerful than a single layer of context free grammar, because generative two-level grammars have actually been shown to be Turing complete. Two-level grammar can also refer to a formal grammar for a two-level formal language, which is a formal language specified at two levels, for example, the levels of words and sentences. (Wikipedia).
4 Types of Sentences | English Grammar for Beginners | Basic English | ESL
There are 4 types of sentences to express all the things you want to say. They are Declarative Sentences Interrogative Sentences Imperative Sentences and Exclamatory Sentences. In this video, we give examples of each kind of sentence, as well as the types of punctuation marks you need t
From playlist It Starts With Literacy
There is a great deal of confusion about the term 'grammar'. Most people associate with it a book written about a language. In fact, there are various manifestations of this traditional term: presecriptive, descriptive and reference grammar. In theoretical linguistics, grammars are theory
From playlist VLC107 - Syntax: Part II
It is usually assumed that the sentence is the highest-ranking unit of syntax. However, not all sentences are structurally complete. For this reason, a distinction is drawn between two sentence types: minor and major sentences. This clip discusses the central properties of these two senten
From playlist VLC201 - The Structure of English
What are Nouns? English Grammar for Beginners | Basic English | ESL
You've all heard that a noun is a "person, place, or thing." But sometimes it gets a little harder to tell. Here's a simple trick to try: the "it" test. You have great ideas. But no one will know about them if you can't communicate effectively! Our series of English Grammar Basics will
From playlist It Starts With Literacy
A10 Example problem of multiplicity three
An example problem of multiplicity three.
From playlist A Second Course in Differential Equations
Introduction to the C programming language. Part of a larger series teaching programming. See http://codeschool.org
From playlist The C language
English Grammar Basics: Its vs It's
It's easy to confuse the words "its" and "it's." Which word should you use? Think about if you can expand the word to say "it is" or "it has." If your sentence still makes sense, then you need that apostrophe! You may also like There, their, and they're http://bit.ly/21I6MaN Me, Myse
From playlist It Starts With Literacy
ADVERBS OF DEGREE - ENGLISH GRAMMAR
Adverbs of degree are words that describe or modify adjectives or adverbs. They are a special type of adverb, so I don't really like to think of them as adverbs. They are best on their own category. These are also called intensifiers or qualifiers. If you want to support the channel, hit
From playlist English Grammar
DEFINITE AND INDEFINITE ARTICLES - ENGLISH GRAMMAR
We discuss the indefinite articles a, an, and definite article the. 'the' is used when a noun exists and is unique. 'a' or 'an' is used for non-specific nouns. 'a' is used before words that start with a consonant sound. 'an' is used before words that start with a vowel sound. If you want
From playlist English Grammar
CS105: Introduction to Computers | 2021 | Lecture 7.4 Intro to HTML: Grammar & Vocabulary Rules
Patrick Young Computer Science, PhD This course is a survey of Internet technology and the basics of computer hardware. You will learn what computers are and how they work and gain practical experience in the development of websites and an introduction to programming. To follow along wi
From playlist Stanford CS105 - Introduction to Computers Full Course
MAE915_Assessing Speaking (Practice)_14Oct2021
To support the channel, I would like to invite you to join this channel to get access to perks: https://www.youtube.com/channel/UCfu2GCdjq50W-kL-cv3rcLw/join
From playlist Language Assessment & Technology
Python - Building Feature Grammars Part 1
Lecturer: Dr. Erin M. Buchanan Summer 2019 https://www.patreon.com/statisticsofdoom This chapter covers how to write your own feature grammar using Python and nltk. You will learn what a feature grammar is, the ins and outs of how to define features and their components, and how to write
From playlist Natural Language Processing
Ruby on Ales 2015 - Time flies like an arrow, fruit flies like a banana by Hsing-Hui Hsu
How do we make sense of a regular sentence, especially when they take us down the "garden path"? For example, when we see a sentence that starts with "The old man," most of us would expect the next word to be a verb. So when we read, "The old man the boat," we have to backtrack to re-evalu
From playlist Ruby on Ales 2015
Theory of Computation 8. CFGs and NPDMs ADUni
From playlist [Shai Simonson]Theory of Computation
Compiler Design | L - 9 | Operator grammar & Operator precedence parser | CS/IT #RavindrababuRaula
Click for free access to Educator's best classes: : https://www.unacademy.com/a/Best-Classes-of-all-time-by-Vishvadeep-Gothi-CS.html For regular updates follow : https://unacademy.com/community/Q3ZGJY/ To purchase please click : https://unacademy.onelink.me/081J/zv9co3u1
From playlist Compiler Design
Theory of Computation 6. CFLs and compilers ADUni
From playlist [Shai Simonson]Theory of Computation
Computation Ep25, Stacks and CFGs (Apr 5, 2022)
This is a recording of a live class for Math 3342, Theory of Computation, an undergraduate course for math and computer science majors at Fairfield University, Spring 2022. The course is about finite automata, Turing machines, and related topics. Homework and handouts at the class websi
From playlist Math 3342 (Theory of Computation) Spring 2022
ElixirConf 2015 - The road to intellij-elixir 1.0.0 By Luke Imhoff
Learn how naively copying a grammar file from one parser generator to another won't work. Go back to the beginning and learn about lexers vs parsers, but discover that the power of interpolation changes the computational complexity and forces the lexer to be a push-down automata instead of
From playlist ElixirConf 2015
RubyConf 2015 - Time flies like an arrow; Fruit flies like a banana... by Hsing-Hui Hsu
Time flies like an arrow; Fruit flies like a banana: Parsers for Great Good by Hsing-Hui Hsu When you type print "Hello, world!", how does your computer know what to do? Humans are able to naturally parse spoken language by analyzing the role and meaning of each word in context of its sen
From playlist RubyConf 2015
What are Adjectives? English Grammar for Beginners | Basic English | ESL
An adjective tells you something about a noun: which one, what kind, or how many. We also say an adjective "modifies" a noun. If you're looking for our video about Adverbs, click here: http://bit.ly/2mCFedV You have great ideas. But no one will know about them if you can't communicat
From playlist It Starts With Literacy