Wrong value in the first grade graph
Sent: Oct 20, 2009, 06:50:00
Subject: SuperMemo error: Wrong value in the first grade graph: 5.098
 Question 1
Wrong value in the first grade graph: 5.098
 Question 2
It also happens after grading: http://wiki.supermemo.org/index.php?title=File:Wrong_value_in_the_first_grade.jpg
SuperMemo discovered an illegal value in the graph that shows the correlation between the first grade and the A-Factor. Upon discovering an illegal value, SuperMemo corrects it (here to 5.000).
This error has most likely been caused by a bug in the first release of SuperMemo 2008 (Build 14.00). The bug has since been fixed. You may see this message as many times as there are corrupted entries in the graph (i.e. from 1 to 20 times in total).
There is no need to update SuperMemo. This message appears only in the version that has the bug fixed.
You can see the graph in Tools : Statistics : Analysis : Graphs : First Grade vs. A-Factor.
 Question 3
I've upgraded to Supermemo 15 last week and since then every question I answer has the 'Wrong value in the first grade graph'. I've seen your explanation of what the error means. My collection is around 11000 elements and if I can get the error up to 20 times for each one then I'm still going to be 'entering' past the error message for years.... Is there anyway to correct this error for my entire collection?
This data error is in the graph, not in your elements. First grade graph has 20 entries and this is the maximum number of times you should be able to see that message (unless you stop SuperMemo and disallow saving the corrected data).
 Question 3
Are you telling me that in the future I will have to click on it 20x 4000 entries?
 Answer 3
If you have 4000 items, you do not need to worry about 4000 errors. The graphs has 20 entries. If they are all corrupted, you will see the message 20 times.