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Morphological derivation, in linguistics, is the process of forming a new word from an existing word, often by adding a prefix or suffix, such as un-or -ness. For example, unhappy and happiness derive from the root word happy.
An affix grammar is a two-level grammar formalism used to describe the syntax of languages, mainly computer languages, using an approach based on how natural language ...
An agent morpheme is an affix like -er that in English transforms a verb into a noun (e.g. teach → teacher). English also has another morpheme that is identical in pronunciation (and written form) but has an unrelated meaning and function: a comparative morpheme that changes an adjective into another degree of comparison (but remains the same ...
In linguistics, an affix is a morpheme that is attached to a word stem to form a new word or word form. The main two categories are derivational and inflectional affixes. Derivational affixes, such as un- , -ation , anti- , pre- etc., introduce a semantic change to the word they are attached to.
In linguistics, morphology is the study of words, including the principles by which they are formed, and how they relate to one another within a language. [1] [2] Most approaches to morphology investigate the structure of words in terms of morphemes, which are the smallest units in a language with some independent meaning.
Affixes are bound by definition. [5] English language affixes are almost exclusively prefixes or suffixes: pre-in "precaution" and -ment in "shipment". Affixes may be inflectional, indicating how a certain word relates to other words in a larger phrase, or derivational, changing either the part of speech or the actual meaning of a word.
Unlike derivational suffixes, English derivational prefixes typically do not change the lexical category of the base (and are so called class-maintaining prefixes). Thus, the word do, consisting of a single morpheme, is a verb, as is the word redo, which consists of the prefix re-and the base root do.
In linguistics, the affix grammars over a finite lattice (AGFL) formalism is a notation for context-free grammars with finite set-valued features, acceptable to linguists of many different schools. The AGFL-project aims at the development of a technology for Natural language processing available under the GNU GPL .