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| en:pojmy:lemma [2016/12/09 21:50] – [The lemmatization process] veronikapojarova | en:pojmy:lemma [2022/04/13 14:51] – jankrivan |
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| The lemma as a unit originates from an abstraction of a [[en:pojmy:word|word form's]] morphological characteristics, and represents a set of forms which have the same root and differ only on their respective morphological affixes or orthographic form. In some approaches, the selected morphological variants are also associated with the lemma. | The lemma as a unit originates from an abstraction of a [[en:pojmy:word|word form's]] morphological characteristics, and represents a set of forms which have the same root and differ only on their respective morphological affixes or orthographic form. In some approaches, the selected morphological variants are also associated with the lemma. |
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| | ====== Sublemma ====== |
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| | Starting with the SYN2020 corpus, lemmatization in Czech corpora is two-tiered: each form is given a sublemma attribute in addition to the lemma attribute. While a lemma can associate multiple variants of a single word (e.g. the lemma //filozof// represents all forms with both //filozof// and //filosof// stems), sublemmata delimit subgroups of forms according to this alternation (the sublemma //filozof// represents only forms with the stem //filozof//, the sublemma //filosof// represents only forms with the stem //filosof//). If the word is non-variant, the sublemma is identical to the lemma (e.g. a lemma //kniha// represents the same set of forms as a sublemma //kniha//). |
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| | Different types of variants are handled as sublemmata (e.g. //mýdlo/mejdlo//, //okno/vokno//, //citron/citrón//, //email/e-mail//, //myslet/myslit//, //mýt/mejt//, //péci/péct/píct//, //kuchyně/kuchyň//, //antivirus/antivir//, //sedm/sedum//, //tenhle/tendle/tenle//, //ačkoli/ačkoliv//, proper names //Robert/Róbert/Roberto//, //Atény/Athény//) and they are used to differentiate some specific groups of forms that are included under one lemma (e.g. negated forms of adjectives and adverbs //černý/nečerný//, //hezky/nehezky//, nominal forms of adjectives //mladý/mlád//, suppletion //dobře/lépe/líp//, //člověk/lidé//). |
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| ===== The link between a lemma and lexeme ===== | ===== The link between a lemma and lexeme ===== |
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| <WRAP round box 49%> | <WRAP round box 49%> |
| [[en:pojmy:anotace|Annotation]] • [[en:pojmy:desambiguace|Disambiguation]] • [[en:pojmy:tag|Tags and tagging]] • [[en:pojmy:word|Word form | [[en:pojmy:anotace|Annotation]] • [[en:pojmy:desambiguace|Disambiguation]] • [[en:pojmy:tag|Tags and tagging]] • [[en:pojmy:word|Word form]] |
| </WRAP> | </WRAP> |
