683726 - Require >1 tag in common for two articles to be "related"

Status: VERIFIED FIXED

(support.mozilla.org :: Knowledge Base Software, task, P1)

Description

[Scoobidiver (away)]

Since SUMO-2011-08-30, the Related Articles block is not empty when the article has no topic. The Relevant To section seems to be considered as a topic.
See:
https://support.mozilla.com/en-US/kb/Plugin%20crash%20reports
https://support.mozilla.com/en-US/kb/what-are-tab-groups
https://support.mozilla.com/en-US/kb/How%20to%20set%20the%20home%20page
...

Comment 1

[Verdi [:verdi] Best to slack me]

(In reply to Scoobidiver from comment #0)
> Since SUMO-2011-08-30, the Related Articles block is not empty when the
> article has no topic. The Relevant To section seems to be considered as a
> topic.


That's correct. It is a topic. We still need to come up with other topics and assign them to articles so that we have better related articles. I decided to wait on feedback from Crystal's UX research before implementing something.

It would help to know how the related articles are picked. Why a particular 5 articles out of the troubleshooting or how-to articles.

Comment 2

[James Socol [:jsocol, :james]]

(In reply to Verdi from comment #1)
> It would help to know how the related articles are picked. Why a particular
> 5 articles out of the troubleshooting or how-to articles.

We pick the five "most" in common, that is: order the list of articles by the number of tags in common with the current article, descending, so the most tags in common is at the top. Then pick the top 5 in that list.

Now, since basically all articles have one tag in common, we have a big list of "related" articles for every article. When we pick the "top 5" out of a group that's all 1, exactly, that list gets sorted is sort of up to and an artifact of MySQL and probably related the order in which things (articles, tags) were added to the database.

We might require that articles have > 1 tag in common to be considered related, or we might do nothing and just close out this bug.

Comment 3

[James Socol [:jsocol, :james]]

Pull req https://github.com/jsocol/kitsune/pull/261 but didn't get reviewed in time.

Comment 4

[James Socol [:jsocol, :james]]

https://github.com/jsocol/kitsune/compare/1be1edf...78636af

Comment 5

[Rebecca Billings [:rbillings]]

Verified related articles display with topics.