#metabrainz

hiya! I like that you're thinking in terms of UI, but currently I am much more interested in the technical details behind the semantic recommender -- that sounds like a lot of work, really. hence my question as to what tools you plan to use to make all this happen.

Hey! So most likely I feel that Python or JS with a web scraper and interaction with music brainz RDMS would allow for these connections to be identified. I say a web scraper due to the fact that sentiments can be analyzed with information that is taken off of publicly available information about albums, and then put into bins/categories

This would require a NLP approach combined with content-based recommendation

So an example could be extracting information about an album's themes/moods, analyzing mlp, and then quantifying that in the context of both musical genres, but also moods

what sites would you scrape?

"content-based recommendation" what does that mean? acoustic qualities of the music?

ah yes.

so, we have the AcousticBrainz project that has this info. but the underlying algorithms suck, so the data is... well.. shit.

that is why the project is on life support now. and spotify shut down access to their acoustic API.

so, content based recommendation is outside of our reach for the time being.

mayhem[m]: Well mainly I was looking at wikipedia due to how it contains aggregate info from different review sites. RYM is protected by cloudflare + it's against their TOS so that's not really viable lol

WP is perfect. anything else without clear usage rights would be a much harder sell.

and MB has a ton of WP links so we can download that stuff right quick.

<mayhem[m]> ""content-based recommendation..." <- Acoustic Qualities could definitely be an aspect of it, but there are also things like subgenres that better explain a particular type of music (once again, wikipedia has in depth explanations of various subgenres), as well as general descriptors that describe themes within an album, or tags that describe emotions an album evokes.

AOTY for example has detailed descriptions of genres. I know that musicbrainz does too with tags, but I feel that there could be a finer level of granularity

defining a subset of tags that express moods and using those: cake.

not sure if that data is statistically significant, however.

mayhem[m]: Which data?

tags that express moods in MB.

Ah

Yes

I'd assume the sample size is under 30 😭

however, we could encourage users to tag tracks with moods in order to improve how this works.

yeah, scraping the bottom of the barrel.

what else could be used?

have similarity data, popularity data

we have a neighborhood where users are compared to other users based on their listening history.

so you get a user's musical neighbors

mayhem[m]: I did see that which I thought was interesting

I'm just throwing out what we have, hoping something adds to the pile.

I did not understand how anything was being calculated though 😭😭😭😭😭

I have to go to bed rn because i have a long day tmrw but I'll definitely sleep on it and talk it out with a few friends!

pearson coefficient. https://en.wikipedia.org/wiki/Pearson_correlati...

yep, here too. past 1am

but lets keep chatting, this sounds super interesting

mayhem[m]: will be looking at this!!!!

Hi, can anyone tell me where I can find the files like mb_metadata.xml and index.json for the project Implement a daemon that corrects out-of-sync cover art and event art metadata on archive.org? Also, do I have to resolve only this ticket [IMG-129](https://tickets.metabrainz.org/browse/IMG-129) for this project?

IMG-129: CAA state on archive.org out-of-sync with site

akshaaatt, jasje: Dunno if MOBILE-221 is the same person I forwarded to you (the content seems familiar) but in any case, it was added to AREQ instead of MOBILE at first so letting you know in case you depend on some sort of automatic assignation for these things :)

MOBILE-221: Can't login on android https://tickets.metabrainz.org/browse/MOBILE-221

reosarevok: did you forward my mail to the user that i sent you?

Eh. No :D I never realized you only sent it to me!

Why wouldn't you just send it to the user :D

Ok, will send it now I guess

Unless you want to just reply to them directly, which honestly would be best since you'll want to get the answer as well - just answer them, and cc support@, jasje

And if for some reason you want me to send stuff, please let me know next time! :D

bitmap: let's put a second beta out with some new improvements (https://github.com/metabrainz/musicbrainz-serve... will make people happy) and then release prod next Monday? :)

[00:04] JuliaHusar[m] The general ideas in these wireframes are that recommendation should be a user-centred process where users work with algorithms to find new music to listen to based on existing material they are familiar with. Essentially we are taking a user's taste, and allowing them to explore it further and make further connections.

hey that sounds good! it's what *i'd* expect from recommendation thing tbh, this thing where I'm the one in controll and things based on what *I* think are specifically made the centrepiece of it. if that's what I'm getting from this message.

jasje: let me know if I really should forward that email myself, anyway - but I'd still recommend you send it unless there's a reason I'm missing why that's a bad idea :)

reosarevok[m]: maybe it feels intimidating to directly email other users ?

I know I feel intimidated with it, I prefer it done by like "official email people guy" (ie you) or discussed publicly so that both I and the other person's opinions/reactions are vetted through

often a third person's input is vital to prevent misunderstandings 🤷‍♂️

not knowing any of the context to this btw

:D

<reosarevok[m]> "jasje: let me know if I really..." <- Nvm ill send it

jasje[m]: Can you send me users email again?

<Jigen> "hey that sounds good! it's what..." <- Essentially yeah, it's moreso a response to all of the AI models that seem to be taking autonomy from users

oh deff that.

I hate when computers try to do things *for* me, I hate that.

but if I *tell* it to do something. that's awesome

monkey: can you please advise on how I should fix https://tickets.metabrainz.org/browse/SEC-1390 ?

SEC-1390: [metabrainz.org] CVE-2025-27789: @babel/helpers < 7.26.10

all the babel deps have similar version numbers, but different.

bring everything babel to the latest?

mayhem: Looks like the dependabot alerts was auto-dismissed, so you can close the ticket.

It should probably happen automatically, but not sure that specific workflow is taken into account:

oh, easy. thanks!

This rule applied adn auto-dismissed the alert: https://github.com/metabrainz/metabrainz.org/se...

low-impact dev dependencies that can't be exploited live? Don't bother us

[metabrainz.org] 14mayhem opened pull request #502 (03master…CVEs): Fix jinja CVE https://github.com/metabrainz/metabrainz.org/pu...

[metabrainz.org] 14mayhem merged pull request #502 (03master…CVEs): Fix jinja CVE https://github.com/metabrainz/metabrainz.org/pu...

[metabrainz.org] release 03v-2025-03-17.0 has been published by 14mayhem: https://github.com/metabrainz/metabrainz.org/re...

<reosarevok[m]> "bitmap: let's put a second..." <- sure, sounds like a good plan to me

<NishantKumar[m]> "Hi, can anyone tell me where I..." <- given that I've received a pre-proposal from you already, I assume you've found examples of those?

This is my pre- proposal for gsoc

<bitmap[m]> "given that I've received a pre-..." <- Yeah , but I need to install it on my local environment

bitmap: could you please give feedback on my pre proposal like anything that I missed to mention or do I need another thing to solve this issue?

kellnerd: ping!

or, anyone who is good with regular expressions -- I could use your help!

I can try

ok, in python regex \w selects all word characters, a-zA-Z and all of the international versions as well. In C++ 11 \w selects a-zA-Z,but not the international versions.

if I removed all \w in python, I get:

"This @is an _ artist!!! (モーニング娘。)" > "This is an artist モーニング娘。"

in C++ I get:

"This @is an _ artist!!! (モーニング娘。)" > "This is an artist"

how can I make C++ do a python style \w ?

So you want to match all letters? I'm not familiar with regex flavors in C++, but you want to use Unicode character classes, \p{Letter} specifically.

yes

That's the exact conclusion I came too. Never used c++

rustynova[m]: yeah. its an emergency, lol.

It probably depends on the C++ library if/how they can be used, but usually you need the "u" flag to enable them.

text = regex_replace(text, regex("[_]|[^\\p(Letter)]+"), "")

This @is an _ artist!!! (モーニング娘。)

rtt()

uh??

u flag? where does that go?

The same place where you would pass "i" for case-insensitivity... Are you using https://en.cppreference.com/w/cpp/regex/regex_r... or something else?

using that, yes.

text = regex_replace(text, regex("[_]|[^\\p(Letter)]+"), "");

is the key line.

Try text = regex_replace(text, regex("[_]|[^\p(Letter)]+"), "", "u");

putting the /u at the end of the regex string seems to work.

Even better