load_pkg_chemical_hierarchy

load_pkg_chemical_hierarchy(file_path: str | Path = 'scratch/wikidata_classes_taxonomy.tsv') → dict[str, list[str]]

Load chemical class hierarchy from a TSV file.

The file should have at least 3 columns, where: - Column 2 (index 1): Class URI - Column 3 (index 2): Parent URI

Parameters:

file_path – Path to the TSV file containing hierarchy data.

Returns:

Dictionary mapping parent class URIs to lists of child class URIs.

Raises:

DataLoadingError – If the file cannot be read or parsed.