What It Means
LDI tests lexical discipline. It shows whether a segment has broad vocabulary behavior that stays sustained over length while keeping repetition and lexical narrowness under control.
Scoring Context
Scores are standardized within the declared comparison pool, tokenizer, transform, and slice-size run before index calculation. Index values are therefore run-context-specific and should not be interpreted outside the stated configuration.
Evidence Boundary
The public LDI page describes aggregate metric behavior. It does not publish protected corpus text, third-party lyrics, artist names, album titles, song titles, or source-reconstructable mappings.
This page supports a metric-specific aggregate claim: LDI can show whether vocabulary range stays broad, sustained, and controlled without using entropy in the formula. It does not publish source text, identify protected reference material, or prove universal artistic ranking. The public result is strongest inside the tested comparison pool, and deeper source-level verification belongs in controlled review.
Reference Comparison Boundary
Reference comparisons are baseline coordinates for interpreting metric behavior. They are not presented as artistic rankings or claims of superiority over other writers.