Sloleks is a lexicon of Slovene word forms. This means that it contains, in an XML database, basic information on the Slovene words, especially their word class and related features. For each word, all its word forms are provided. Since Slovene is morphologically very rich language, each word has many word forms. Declension is typical of nouns, adjectives, pronouns, numerals, verbs and adverbs. Word classes and their features are specified according to the specifications of the Linguistic Annotation of Slovene project (JOS), as explained next.

The Sloleks lexicon is conceptualized with two aims in mind: the use of the lexicon for (a) language technology applications and b) applications used by the Orthography Guide portal. By following these two aims, the contents of the lexicon have two contrasting tendencies: for language technology applications, the lexicon has to provide as exact information as possible on morphological characteristics of all the lexicon entries (words), found in authentic texts, including speech, and enable machine-readability of data. For the Manual of Style, it must contain the information on the norm, compared with contemporary reality of Slovene language use.

The ISO standard format Lexical Markup Framework was selected for structuring the information in the lexicon. The format is the latest result of a long series of standardization projects for recording European and other language data. The lexicon as part of language technology applications needs to be compatible with two other closely-related parts of the project: a training corpus and a tagger. Word classes (or categories) and their morphosyntactic features for these two resources are based on the JOS project specifications and are found in both the training corpus and the lexicon. Similarly, the same tagset is used by the tagger, making it possible to directly link the tags in the lexicon and the tags in the Gigafida and Kres corpora. Consequently, the information on the frequency of each word form in the corpus could be included in the lexicon database. In an online search engine of Sloleks both databases are connected, so we can see the concordances of any word form by clicking on the link in the “frequency” column.