Incorrect Example Result for apoc.math.sigmoid document

Feedback & Requests Documentation
1

Hi,

I’d like to point out a possible typo in the documentation for apoc.math.sigmoid.

In the example provided:

RETURN 1 / (1 + exp(-1)) AS result;

The document states the result is:

0.2689414213699951

However, the correct result of this calculation is actually:

0.7310585786300049

It seems the documented result is for exp(1) instead of exp(-1).

Additionally, I believe the example would be clearer and more intuitive if it directly used the APOC function like this:

RETURN apoc.math.sigmoid(1) AS result;

Which would return:

0.7310585786300049

This makes it easier for readers to understand the function behavior.
Thank you :smiley:

2

@p.s3xyy
thank you for reporting. let me forward this discrepancy to our documentation and engineering groups

3

The example result in the apoc.math.sigmoid documentation is incorrect—it doesn’t match the actual output of the sigmoid formula. The correct result for apoc.math.sigmoid(0) should be 0.5.

4

@jackswills004
is there doc which includes apoc.math.sigmoid(0) ?

Per the initial problem description and apoc.math.sigmoid - APOC Core Documentation the example per the doc is

RETURN apoc.math.sigmoid(-1) AS result;
5

The apoc.math.sigmoid example shows incorrect output—verify the formula or report the doc issue.

Youcine iOS

6

@jackswills004

my initial reply indicated

let me forward this discrepancy to our documentation and engineering groups

but as you reported

The correct result for apoc.math.sigmoid(0) should be 0.5 .

and if there is doc which describes apoc.math.sigmoid(0) then I'll make sure that gets fixed as well. Do you have a doc url which describes the usage of apoc.math.sigmoid(0) ?