This heatmap shows the similarity between poems based on shared source appearances. Each cell represents the percentage of sources that two poems have in common. Darker blue indicates higher source overlap, revealing clusters of poems that frequently appear together in the same sources.
The diagonal shows each poem compared to itself (100% similarity). Off-diagonal patterns reveal poem relationships - dense blue regions indicate groups of poems that share many sources, suggesting thematic, authorial, or temporal connections. This view helps identify which poems have similar transmission patterns through the source tradition.