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Register a new userStrong Equivalence of TAG and CCG
معادلة قوية للعلامة و ccg
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القواعد النجمية المجاورة للأشجار (TAG) و Compitary التصنيف قواعد النتيجة (CCG) هي نموذجين راسخين من القواعد القواعد الحساسة بشكل جيد من المعروف أن نفس القوة التعبيرية على الأوتار (أي، وتولد نفس فئة لغات السلسلة).ويتضح أن سلطتها المعبرة على الأشجار تتزامن أيضا أساسا.في الواقع، CCG بدون إدخالات المعجم للحصول على السلسلة الفارغة وقواعد الدرجة الأولى فقط من الدرجة 2 كافية لقوتها التعبيرية الكاملة.
Tree-adjoining grammar (TAG) and combinatory categorial grammar (CCG) are two well-established mildly context-sensitive grammar formalisms that are known to have the same expressive power on strings (i.e., generate the same class of string languages). It is demonstrated that their expressive power on trees also essentially coincides. In fact, CCG without lexicon entries for the empty string and only first-order rules of degree at most 2 are sufficient for its full expressive power.
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