![Nominal Data Maps of the Property Sales dataset][1]
[1]: https://mfr.osf.io/export?url=https://osf.io/download/hgx4e/?direct=%26mode=render&format=2400x2400.jpeg
Figure 1: *Categorical Data Map* visualizations of the *Mushroom dataset* using the *MDS* and *Overlap coefficient*. (1) Two **poisonous** mushrooms very similar to **edible** mushrooms. (2) Comparing **class** and **odor** reveals that the poisonous outlier has a **pungent** odor. Continued analysis reveals that mushrooms with an unpleasant smell are **poisonous**. (3) After the selection of a cluster, the **ring-type** is identified as a defining characteristic for the cohesion of visible clusters and is used as a property for the classification of mushrooms. (4) Selecting two **poisonous** cluster, reveals that the vast amount of **poisonous** mushrooms are **silky** at the **stalk-surface-below-ring**, while there exist very few **silky** mushrooms that are edible.
