Facts Settings Dialog

This is an advanced topic

Sliders

Here you control the performance of the Fact Discovery Engine. Each fact is supported by a number of rows in your data table. For example, if the fact:
Most products where Product = Jacket have Profit = High
is supported by 100 rows. This means that there are 100 rows in the table where the Product = Jacket and at the same time, Profit = High. You can increase or decrease the support level that a fact must achieve to be reported. Increasing the level reduces the number of facts discovered. However, those facts are likely to be interesting and/or important. On the other hand, sometimes, you want to find all the patterns or facts. In this case you want to decrease the support level. The fact discovery process will take more time to process. As you increase the slider, you are increasing the number of facts and decreasing the support level required.

The blue sliders control the number of Facts found at different confidence levels. First Slider is for facts of type ALL i.e. confidence 100%. The next slider is for facts of type MOST and have confidence level in the range 80% to 99%.

The red sliders are for Exceptions. Each slider controls the number of exceptions found. Here we use Clustering levels instead of Support levels. For an exception to be reported in a column, this column must have some dominant values or clusters. As you increase the slider you are requesting more exceptions and you are decreasing the level of clustering required.

Fact Levels

A fact like
Most products where Product = Jacket have Profit = High
is considered Fact Level One because it has 1 condition in its condition side. On the other hand a fact like
Most products where Product = Jacket and Color = Black have Profit = High
is a Fact Level 2 since it has 2 conditions in its condition side.

You can specify the maximum fact level you are interested in. The default is 1 and usually 2 or 3 are enough. The higher the fact level, the longer the discovery process will take.

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