This heatmap shows the similarity between sources based on shared poem content. Each cell represents the percentage of poems that two sources have in common. Darker blue indicates higher poem overlap, revealing sources that contain similar collections of poems.
The diagonal shows each source compared to itself (100% similarity). Off-diagonal patterns reveal source relationships - dense blue regions indicate groups of sources that share many poems, suggesting common sources, scribal traditions, or thematic collections. This view helps identify source families and transmission patterns in the archive.