Models and languages

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What is a model?

model

model

framework

theoretical account

poser

simulation

exampleexemplar

good example

role model

fashion model

manakin

manikin

mannequin

mannikin

modelingmodelling

form

kind

sort

variety

NOUNS

framework, model, theoretical account

a simplified description of a complex entity or process

"the computer program was based on a model of the circulatory and respiratory systems"

Bezivin, Gerbe

A model is a simplification of the subject,and its purpose is to answersome particular questionsaimed towards the subject.

Aristotle384 BC - 322 BC

μετά = after, beyond

Ed Siedewitz

A meta-model is a modelthat makes statementsabout what can be expressedin valid models.

model

subject

meta-model

meta-meta-model

model

subject

meta-model

meta-meta-model

representedBy

instanceOf

instanceOf

computerinformation information

computation

Please, stand up!

Please, stand up!Congratulations, you just executed a program!

Va rog sa va ridicati in picioare!

Va rog sa va ridicati in picioare!If you do not know the language,

you cannot interpret it

Who’s on first?

Who’s on first?

-12.34

-12.34Ceci n’est pas un nombre

part = {digit}decimal_part = “.” partnumber = [-] part [decimal_part]

digit digit- .

x Nonterminal"x" Terminalx y Sequencex | y Alternative{ x } Iteration( x ) Binding[ x ] Optiony = x. Definition

Please, stand up by sitting down!

Please, stand up by sitting down!Syntactically correct sentences

do not necessarily have a meaning

Tudor Gîrbawww.tudorgirba.com

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