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README.md

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 # NDC-classes
 
+NDC-classes is an undirected hypergraph built from the U.S. FDA’s National Drug Code (NDC) Directory, designed for higher-order network / hypergraph machine learning in the drug domain. Each hyperedge corresponds to a drug and connects the set of pharmacologic/therapeutic class labels assigned to that drug, while nodes represent the class labels themselves (e.g., “serotonin reuptake inhibitor”), capturing co-classification patterns as higher-order interactions rather than pairwise links.
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