Type-Token Ratio
The type-token ratio (TTR) is the oldest and most widely used measure of lexical diversity: the number of distinct word types in a text divided by the total number of word tokens. A text in which few words repeat yields a TTR near 1, while a text that recycles a small vocabulary yields a TTR near 0. Despite its intuitive appeal and trivial computation, the raw ratio is severely confounded by text length, which has motivated a long line of length-correcting transformations and, ultimately, the more robust indices that have largely superseded it for serious comparison.
اقرأ الطريقة كاملة
سجّل الدخول بحساب مجاني لقراءة هذا القسم.
خريطة المناهج
محيط المناهج ذات الصلة — اختر عقدةً للاستكشاف.
المصادر
- Johnson, W. (1944). Studies in language behavior: A program of research. Psychological Monographs, 56(2), 1–15. DOI: 10.1037/h0093508 ↗
- Malvern, D., Richards, B., Chipere, N., & Durán, P. (2004). Lexical Diversity and Language Development: Quantification and Assessment. Palgrave Macmillan. ISBN: 9781403902313
- McCarthy, P. M., & Jarvis, S. (2010). MTLD, vocd-D, and HD-D: A validation study of sophisticated approaches to lexical diversity assessment. Behavior Research Methods, 42(2), 381–392. DOI: 10.3758/BRM.42.2.381 ↗
كيف تستشهد بهذه الصفحة
ScholarGate. (2026, June 22). Type-Token Ratio (TTR) for Lexical Diversity. ScholarGate. https://scholargate.app/ar/linguistics/type-token-ratio
أيُّ منهج؟
ضع هذا المنهج إلى جانب أقرب نظائره واقرأهما جنباً إلى جنب — المكتبة تضع الكتب على الطاولة، والاختيار لك.
- التنوع المعجميتنقيب النصوص↔ قارن
- Measure of Textual Lexical Diversity (MTLD)علم اللغة↔ قارن
- N-gram Analysisعلم اللغة↔ قارن
- vocd-D (D Measure)علم اللغة↔ قارن