Meaning of terms in the headers of output

[Habit]

Hi,

I tried the AMIE3 and got some output, but I cannot understand the meaning of some terms in the headers of output. Could you please illustrate what the following terms mean?

• Std Confidence
• Positive Examples
• Body size
• PCA Body size
• Functional variable

Thank you very much.

[Jonathan Lajus]

Hi,

• Positive Examples: the support of the rule (number of correct predictions made by the rule).
• Body size: the total number of predictions made by the rule.
• Std Confidence: the confidence under Closed-World Assumption. By definition: std_conf = support / body_size.
• PCA Body Size: the number of correct+incorrect predictions made by the rule under the PCA.
• Functionnal variable: the most functional variable among the variables of the head atom (used for PCA Body Size computation).

If you don't know what I am talking about:

• Check the rule mining section of our tutorial paper.
• Check the slides from Fabian Suchanek's course on rule mining, more precisely the ones illustrating support and confidence and the ones on rule's confidence in KBs.
• For PCA, you can also read Luis' original paper introducing AMIE.

Cheers,
Jonathan

[Habit]

Got it. Thanks.