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Engineered languages (often abbreviated to engelangs, or, less commonly, engilangs) are constructed languages devised to test or prove some hypotheses about how languages work or might work. There are at least three subcategories, philosophical languages (or ideal languages), logical languages (sometimes abbreviated as ''loglangs''), and experimental languages. Raymond Brown describes engineered languages as "languages that are designed to specified ''objective'' criteria, and modeled to meet those criteria".〔http://www.carolandray.plus.com/Glosso/Glossopoeia.html〕 Some engineered languages have been considered candidate global auxiliary languages, and some languages intended as international auxiliary languages have certain "engineered" aspects (in which they are more regular and systematic than their natural language sources). == Logical languages == Logical languages are meant to allow (or enforce) unambiguous statements. They are typically based on predicate logic but can also be based on any system of formal logic. The two best-known logical languages are the predicate languages Loglan and its successor Lojban. They both aim to eliminate syntactical ambiguity and reduce semantic ambiguity to a minimum. In particular, the grammar of Lojban is carefully engineered to express such predicate logic in an unambiguous manner. Ceqli is a derivative of Loglan which aims to retain the power of unambiguous expression but allow the speaker to trade concision for unambiguity.〔http://ceqli.pbworks.com/w/page/5455970/FrontPage〕 == Philosophical languages == (詳細はJohn Wilkins' Real Character and Edward Powell Foster's Ro constructed their words using a taxonomic tree. Vocabularies of oligosynthetic languages, for example (Ygyde ), are made of compound words, which are coined from a small (theoretically minimal) set of morphemes. Suzette Haden Elgin's Láadan is designed to lexicalize and grammaticalize the concepts and distinctions important to women, based on muted group theory. Sonja Elen Kisa's Toki Pona is based on minimalistic simplicity, incorporating elements of Taoism. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Engineered language」の詳細全文を読む スポンサード リンク
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