COMPUTATIONAL LINGUISTICS, LEXICAL DENSITY & CORPUS TELEMETRY
Mathematical formulations for Type-Token Ratio (TTR), stopword distribution, readability rates, and zero-leakage privacy.
1. Lexical Density & Type-Token Ratio (TTR)
First codified in quantitative corpus linguistics by Jean Ure (1971) and expanded by M.A.K. Halliday (1985), lexical density quantifies the proportion of informative lexical items (nouns, verbs, adjectives, adverbs) relative to grammatical tokens (articles, prepositions, conjunctions):
Spoken English dialogue typically hovers around 35–45% lexical density, whereas dense scientific reports, cryptographic specifications, and legal treatises regularly exceed 60–75%.
2. Temporal Readout Velocity Standards
Reading duration algorithms assume standard cognitive ingestion rates:
- Silent Reading: Normalized at 200 to 250 words per minute (WPM) across general adult populations.
- Spoken Speech: Standard cadence for voiceover synthesis, presentation delivery, and telemetry briefing calibrated at 130 to 150 WPM.