Starting a new language with lttoolbox

For information on how to install lttoolbox, see lttoolbox and minimal installation from SVN

This page is going to describe how to start a new language with lttoolbox. As lttoolbox is not really suited to agglutinative languages, or languages with complex and regular morphophonology (see starting a new language with HFST), we're going to work on one with simpler and less regular morphology.

Preliminaries

A morphological transducer in lttoolbox has typically one file, a .dix file. This defines both how morphemes in the language are joined together, morphotactics, and how changes happen when these morphemes are joined together, morphographemics (or morphophonology). For example,

• Morphotactics: wolf<n><pl> → wolf + s
• Morphographemics: wolf + s → wolves

These two phenomena are treated in the same file.

The language

The language we will be modelling is Upper Sorbian, a Slavic language spoken in Germany. There is a limited grammar available in English here and that is what we will be basing our analysis on. The part of speech we're going to look at for this small tutorial is nouns. Nouns in Upper Sorbian have seven cases (nominative, genitive, dative, accusative, locative, instrumental, vocative), three numbers (singular, dual, plural) and three genders (masculine, feminine, neuter). Like other Slavic languages, the category of animacy is distinguished in the masculine.

Paradigms

Here we give four example paradigms.

Masculine animate (nan "father")

	Singular	Dual	Plural
Nominative	nan	nanaj	nanojo
Genitive	nana	nanow	nanow
Dative	nanej	nanomaj	nanam
Accusative	nana	nanow	nanow
Instrumental	nanom	nanomaj	nanami
Locative	nanje	nanomaj	nanach
Vocative	nano!	nanaj!	nanojo!

Masculine inanimate (hrěch "sin")

The differences from the masculine animate paradigm are indicated in blue.

	Singular	Dual	Plural
Nominative	hrěch	hrěchaj	hrěchi
Genitive	hrěcha	hrěchow	hrěchow
Dative	hrěchej	hrěchomaj	hrěcham
Accusative	hrěch	hrěchaj	hrěchi
Instrumental	hrěchom	hrěchomaj	hrěchami
Locative	hrěchu	hrěchomaj	hrěchach
Vocative	hrěcho!	hrěchaj!	hrěchi!

Feminine

The parts in common with the masculine paradigms are highlighted in green.

	Singular	Dual	Plural
Nominative	wróna	wrónaje	wrónay
Genitive	wrónu	wrónaow	wrónaow
Dative	wrónje	wrónaomaj	wrónaam
Accusative	wrónu	wrónaje	wrónay
Instrumental	wrónu	wrónaomaj	wrónaami
Locative	wrónje	wrónaomaj	wrónaach
Vocative	wróna!	wrónaje!	wrónau!

Neuter

See also

• Starting a new language with HFST