Predictions puts "?" regression error values on output while a regular numeric value is shown in its own visualization/dialog box

[wvdvegte]

What's wrong?
How can we reproduce the problem?
In the attached workflow using user reviews from Kaggle (included), open Select Columns, and drag 3 out of 4 features to 'Ignored' so that 'compound' is left as the only feature. Now for several rows, Predictions will produce a "?" on its output for 'Linear Regression (error)' while a regular numeric value is shown in its own visualization/dialog box. For instance, for row 347, the error is shown as 2 in the Predictions visualization/dialog box, but instead Data Table (1) shows a "?"

Review Mining.zip

What's your environment?

• Operating system: Mac OS Sequoia
• Orange version: 3.37.0
• How you installed Orange: from dmg; updates through add-ons menu

[processo]

I can confirm this. When the Absolute difference output of Predictions would be exactly 2 it is turned into missing (?), no matter the model or data.

[janezd]

I cannot reproduce the error. I also tried with a simpler workflow, in which I just create the data, but still no luck.

To make sure we're trying this on the same data: could you upload the data the comes from Select Columns?

[processo]

@janezd I used the following data and workflow to replicate.

attribute,target
0,1
1,3
2,5