Isidore: A grammar utility for the internet

An experimental, potentially multilingual, highly configurable part-of-speech tagger.

This is still somewhat experimental.. Verb identification, in particular, is still limited. Please monitor the issuer tracker for progress on feature development.

API

PartsOfSpeech

There is a class per part of speech. All parts of speech inherit from the word class:

Word Class

Member	Type	Description
partOfSpeech	string	one of the eight parts of speech
word	string	the word (token)
type	string	a high-level classification for this partOfSpeech
types	array	all possible types for this partOfSpeech

Parts of Speech:

• Noun
• Pronoun
• Verb
• Adjective
• Adverb
• Conjunction
• Interjection
• Preposition

These may all have additional members.

Dictionaries

There is a dictionary class per part-of-speech. All dictionaries inherit from the Dictionary class. Any rules about how words can vary (inflections) are stored in the Dictionary for that part of speech (e.g. NounDictionary has rules about how to recognize plurals and possessives);

This is so that Isidore could have potential to scale into other languages without requiring massive rewrites.

Dictionary

Member	Type	Description
list	array	sorted list of words
language	string	Language for the dictionary
findWord()	method	finds a word in the dictionary
partOfSpeech	string	the part of speech that dictionary has
GrammarModel	class	The type that the dictionary contains

NounDictionary class:

Member	Type	Description
list	array	Nouns with types and wordCategories
language	string	two-letter abbreviation of language
inflections	object	inflections that can be applied to all nouns
findWord(word)	method	Searches for word in dictionary (returns Noun if successful)
getInflections(word)	method	word (string), returns all possible inflections for the word
guessInflection(word)	method	(string), returns a single inflection (object)
removeInflection(word, inflection)	method	word(string), inflection (object). returns string

Languages

All languages within the utility. Right now we just have En, which is a Language;

Language class

Member	Type	Description
grammarDictionaries	Object	NounDictionary, PronounDictionary, VerbDictionary, AdjectiveDictionary, AdverbDictionary, ConjunctionDictionary, InterjectionDictionary, PrepositionDictionary
language	string	two-letter description of language
findWord()	method	accepts a string, returns an array containing partOfSpeech or a word if no word is found

Sentence

The sentence is where the parsing magic starts.

Sentence Class

Member	Type	Description
text	string	raw text of the sentence
type	string	declarative, interrogative, imperative, exclamatory
language	string	Language (En) is default
rawWordList	array	only the words in the sentence
wordList	array	each word in the sentence classified as either a or word
types	array	the possible types that a sentence could have
getSentenceType()	method	returns string, the type of sentence. Guesses what the sentence type is based on punctuation

Example

const { Sentence } = isidore
const mySentence = new Sentence('He gives her a car.');
const { wordList } = mySentence;

console.log(mySentence);
/*
Sentence {
    text: 'He gives him a car.',
    language: 'En',
    rawWordList: [ 'he', 'gives', 'him', 'a', 'car' ],
    wordList:
    [
        Pronoun {
            partOfSpeech: 'pronoun',
            word: 'he',
            referent: 'animate',
            gender: 'masculine',
            type: 'subject',
            person: 3,
            quantity: 'singular'
        },
        Verb {
            partOfSpeech: 'verb',
            word: 'give',
            type: 'transitive',
            valence: 2
        },
        Pronoun {
            partOfSpeech: 'pronoun',
            word: 'him',
            referent: 'animate',
            gender: 'masculine',
            type: 'object',
            person: 3,
            quantity: 'singular',
        },
        Adjective {
            partOfSpeech: 'adjective',
            word: 'a',
            type: 'article',
            degree: undefined
        },
        Noun {
            partOfSpeech: 'noun',
            word: 'car',
            type: 'entityClass',
            subType: 'common',
            inflection: undefined
        }
    ],
    type: 'declarative'
}
    */