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Andrew Neil
Super User
Jun 10, 2026 2:31 PM UTC
Question

How are "Related Topics" chosen ?

This list, which appears in the right-hand sidebar of every thread:

 

This is that highlighted one:

It is 7 years old, has no replies, and is locked.

It doesn’t seem at all useful/valuable to link to that post ?

7 replies

Lina_DABASINSKAITE
ST Community Manager
Jun 11, 2026 1:07 PM UTC

Hi ​@Andrew Neil , 

Can you share what topic you were one when seeing those results?

The information about this component states that: 

The related topics widget performs an automatic search on content on community.

  • It takes the title of the topic, and compares it (by query similarity and matching words) to the title and the first post of all existing topics.
  • The best matches are the topics which have the most words in common.
  • The higher the order is of a certain related topic the more relevant it is to the Topic (order of relevance is from top to bottom).

Feel free to share any examples where you feel it does not match these criteria.


Thanks,
Lina 

​In order to give better visibility on the answered topics, please click on 'Best answer' on the reply which solved your issue or answered your question.
Andrew Neil
Super User
Jun 11, 2026 2:28 PM UTC

Sorry, I can’t remember which topic it it was.

 

It definitely needs some more criteria for its “best match”

  • Not topics with no replies (with the possible exception of very recent ones)
  • Favour topics with an accepted solution
  • For topics without solution, favour more recent ones
A complex system that works is invariably found to have evolved from a simple system that worked.A complex system designed from scratch never works and cannot be patched up to make it work.
Andrew Neil
Super User
Jun 11, 2026 2:35 PM UTC

I can’t remember which topic it it was.

Looks like it might have been this:

 

But the ‘Related Topics’ list is now different:

 

A complex system that works is invariably found to have evolved from a simple system that worked.A complex system designed from scratch never works and cannot be patched up to make it work.
Andrew Neil
Super User
Jun 11, 2026 3:10 PM UTC

Feel free to share any examples where you feel it does not match these criteria

 

Here’s an example where those criteria fall down:

So it’s matched the phrase “Has anyone successfully used the” - but the actual subject of the questions is completely unrelated. Looks like this is also how it thinks the NetX Duo one is “related”.

It seems to also be matching anything with “tool” - even though the tools are completely different.

 

A complex system that works is invariably found to have evolved from a simple system that worked.A complex system designed from scratch never works and cannot be patched up to make it work.
Lina_DABASINSKAITE
ST Community Manager
Jun 16, 2026 1:51 PM UTC

Thanks for sharing ​@Andrew Neil. I will check if this is expected or an error.  

​In order to give better visibility on the answered topics, please click on 'Best answer' on the reply which solved your issue or answered your question.
Andrew Neil
Super User
Jun 17, 2026 12:00 PM UTC

Related:

 

I think such threads should be excluded as potential ‘Related topics’

A complex system that works is invariably found to have evolved from a simple system that worked.A complex system designed from scratch never works and cannot be patched up to make it work.
Andrew Neil
Super User
Jun 17, 2026 2:42 PM UTC

More examples of not related topics:

 

The question is about an MCU, but those suggested topics are about MPUs 

A complex system that works is invariably found to have evolved from a simple system that worked.A complex system designed from scratch never works and cannot be patched up to make it work.