Fig. 2: Microbial abundance patterns and metabolic-interaction landscape.
From: SIMBA-GNN: mechanistic graph learning for microbiome prediction
a Presence/absence heatmap of microbes across samples, showing distinct distribution patterns. b Histogram of cosine similarities between pathway score profiles, indicating varying degrees of similarity across samples. c Fraction of zero entries (63.8%) in the microbial abundance matrix, illustrating data sparsity. d Distribution of nonzero relative abundances on a log scale, showing a heavy-tailed distribution with a shape parameter of 3.7. e Comparison of total simulated production versus consumption for each metabolite, which highlights potential metabolic sources and sinks in the microbial community.
