Co occurrence matrix
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.. toctree::
    :maxdepth: 1
    :hidden:

    metrics.co_occurrence_matrix.bubble_plot
    metrics.co_occurrence_matrix.data_frame
    metrics.co_occurrence_matrix.heatmap
    metrics.co_occurrence_matrix.matrix_data_frame
    metrics.co_occurrence_matrix.matrix_plot
    metrics.co_occurrence_matrix.sankey_plot