Guillaume 🦗 @guillaume@aleph.land

On a 60000×60000 sparse matrix, my code went from about 4.5 to 1.5 seconds to build it like that.

A trick to form large sparse matrices quickly in #python / #numpy. It should maybe have been obvious, but it took me a while to find it.

You could do
>>> m = scipy.sparse.lil_matrix(n, n)
and then assign values one by one like
>>> m[i, j] = v
but this is still kinda slow.

It's better to do:
>>> rows = [...] # list/array of row indices
>>> cols = [...] # list/array of column indices
>>> vals = [...] # list/array of values
>>> m = scipy.sparse.coo_matrix((vals, (rows, cols)), shape=(n, n))

It's kind of working now but not as well as I was hoping for.

I'm making Python segfault now. Maybe it's time to go to bed.

Oh I found out why. I'm dumb. Anyway I always wondered if I should try to sell those pictures of bugs. Maybe someone would like them on their living room wall.

I'm confused with this one: somehow I get a discontinuous function as a sum of continuous ones.

#debugging is fun

Oh interesting, apparently #chitosan can be made from #fungi: https://www.sciencedirect.com/science/article/pii/B9780128179703000146

(but it's not widely available yet).

It's interesting to see all the conspiracies and pseudoscience bullshit listed on his wikipedia page: illuminati, reptilians, 9/11, global warming, chemtrails, holocaust denialism, JFK assassination, "everything is vibration", reincarnation, etc.

The fact that this is the kind of person being influent in the world today makes me very pessimistic about the chances of converging towards better value systems. How can we talk about what really matters if we can't agree on very basic facts about reality?

Wait, David Icke, the guy whose conspiracy video about COVID and 5G Youtube really want me to watch a few months ago, wrote books about reptilians? That video had like 10 million views, no?!

>(36.9% and 20.9%, respectively, P < 0.000)

Wow, a negative p-value

It's very crumbly but it looks and tastes like a cake!

Yeah I'm going to just improvise this cake

Except most of the results are on Pinterest

googling recipes with "-cup -oz -tsp -tbsp" seems to work slightly better than insulting the search engine