Graph View

The Graph View and the Rules View display the same data in different ways.

  • The Rules View shows the association rules and the item sets with various attribute values such as support or confidence.
  • The Graph View displays a graph of the association rules and the item sets.
The following figure shows the Graph View of the Associations Visualizer:
Figure 1. The Graph View of the Associations Visualizer

In the Graph View, the item sets are displayed as nodes and the association rules as arrows. The arrows lead from item sets in the rule body to the item set in the rule head.

An association rule is represented by two nodes that are connected with an arrow. The nodes represent the item sets. The arrows represent the association between these item sets. The arrow leads from the node that represents the item set of one transaction, the rule body, to the node that represents the items that are derived by the Associations mining function, the rule head.

Selecting an arrow means selecting a rule. Selecting a node means selecting an item set.

To select a subgraph, select an item set or a rule and click Edit => Select Subgraph.

Tip:
If there are many rules, the Graph view might be confusing. To get a better overview of the relationships between the items of your interest in the Graph view of the Associations visualizer, you can hide unnecessary rules from the Graph view by following these steps:
  1. In the Associations Visualizer, display the Item Sets view.
  2. In the Item Sets view, click on the header of the Item Set column in the Visible Item Sets table to sort the table rows by the names of the item sets.
  3. Hold the CTRL key and select the items of your interest, for example, Lemonade, Mineral water, and Milk.
  4. Right-click the mouse button on one of the selected rows and select Show Rules for Selected from the popup window.
  5. In the Assoications Visualizer, display the Graph view.

    The graph in the Graph view now includes only the rules that contain Lemonade, Mineral water, and Milk in the rule head or in the rule body.