Metrics
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.. toctree::
    :maxdepth: 1
    :hidden:

    metrics.coverage
    metrics.statistics
    metrics.associations
    metrics.bradford
    metrics.co_occurrence_matrix
    metrics.collaboration
    metrics.correlation
    metrics.emergence
    metrics.general
    metrics.lotka
    metrics.records
    metrics.records_by_year
    metrics.rpys
    metrics.terms_by_year
    metrics.trending_terms
    metrics.trending_terms_by_year