michael 📈 👨💻
@mikedecr.computer
Low-latency quant finance R&D.
Former political scientist, sometimes bike rider.
Long form mikedecr.computer
Former political scientist, sometimes bike rider.
Long form mikedecr.computer
"Gini is not inequality" was right there!
September 4, 2026 at 12:43 AM
"Gini is not inequality" was right there!
crazy how the fence turned green in the specific area behind your safety goggle lenses
September 3, 2026 at 4:45 AM
crazy how the fence turned green in the specific area behind your safety goggle lenses
I have no idea whether this DNA -> RNA transcription detail is retained in people's heads enough for this to land
August 28, 2026 at 12:41 PM
I have no idea whether this DNA -> RNA transcription detail is retained in people's heads enough for this to land
you can do:
thing.method_name(
x=y
).method_name_2(
is_z
)
thing.method_name(
x=y
).method_name_2(
is_z
)
August 25, 2026 at 12:07 AM
you can do:
thing.method_name(
x=y
).method_name_2(
is_z
)
thing.method_name(
x=y
).method_name_2(
is_z
)
tbf I am goofing around about c[.]name. I know it's inconvenient compared to R but there's some structural clarity at least in saying "this is a field of some struct" rather than hand wavey "this will be interpreted in some way, trust me". I like Julia's use of :symbols which kinda splits the diff
August 21, 2026 at 8:38 PM
tbf I am goofing around about c[.]name. I know it's inconvenient compared to R but there's some structural clarity at least in saying "this is a field of some struct" rather than hand wavey "this will be interpreted in some way, trust me". I like Julia's use of :symbols which kinda splits the diff
every inconvenience is an opportunity for evil
![Python code:
import polars as pl
class Columns:
def __getattr__(self, name) -> pl.Expr:
if name.startswith("_"):
raise AttributeError(name)
return pl.col(name)
def __getitem__(self, name) -> pl.Expr:
return pl.col(name)
c = Columns()
df = pl.DataFrame({"foo": [1, 2, 3], "bar": [4, 5, 6]})
df.with_columns(baz=c.foo + c.bar)
# shape: (3, 3)
# ┌─────┬─────┬─────┐
# │ foo ┆ bar ┆ baz │
# │ --- ┆ --- ┆ --- │
# │ i64 ┆ i64 ┆ i64 │
# ╞═════╪═════╪═════╡
# │ 1 ┆ 4 ┆ 5 │
# │ 2 ┆ 5 ┆ 7 │
# │ 3 ┆ 6 ┆ 9 │
# └─────┴─────┴─────┘](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:qjxju2w5sdit42sjb4qpnatk/bafkreiceozkeqxmhzvxd7ljkmv35t3zns43nbpk26xcox3llbmaxcx2wam)
August 21, 2026 at 2:12 PM
every inconvenience is an opportunity for evil
this skeet is the first (to our knowledge) to
August 20, 2026 at 4:32 AM
this skeet is the first (to our knowledge) to
It's just tedious. I learned this stuff once so I could be wise forever. The deal was I become a freak about some things so I could then make good choices automatically because the payoff of caring is that your philosophies and perspectives just ooze out of you whenever you work
August 10, 2026 at 11:05 PM
It's just tedious. I learned this stuff once so I could be wise forever. The deal was I become a freak about some things so I could then make good choices automatically because the payoff of caring is that your philosophies and perspectives just ooze out of you whenever you work
Anyway, my irk is that I'm not sure how to prompt around stuff like this. This is clearly just like a Stance you can have about your view of math x data or not. Am I really going to prompt about every possible thing I might encounter w/ this? Do I really need to tell models to "remember" this
August 10, 2026 at 11:05 PM
Anyway, my irk is that I'm not sure how to prompt around stuff like this. This is clearly just like a Stance you can have about your view of math x data or not. Am I really going to prompt about every possible thing I might encounter w/ this? Do I really need to tell models to "remember" this
that the pkg we're using to generate the basis fns won't set knots outside the range of X, because there are no data out there to fit.
You... foolish... insolent... swine!
Basis fns as an abstraction should not be concerned w/ model fitting. Just give me the fns & we'll penalize like adults. Bah!
You... foolish... insolent... swine!
Basis fns as an abstraction should not be concerned w/ model fitting. Just give me the fns & we'll penalize like adults. Bah!
August 10, 2026 at 11:05 PM
that the pkg we're using to generate the basis fns won't set knots outside the range of X, because there are no data out there to fit.
You... foolish... insolent... swine!
Basis fns as an abstraction should not be concerned w/ model fitting. Just give me the fns & we'll penalize like adults. Bah!
You... foolish... insolent... swine!
Basis fns as an abstraction should not be concerned w/ model fitting. Just give me the fns & we'll penalize like adults. Bah!
it looks cool but red flags to me: anonymous author, no posts except to promote the software. worth an inspection before yolo install
August 9, 2026 at 12:59 PM
it looks cool but red flags to me: anonymous author, no posts except to promote the software. worth an inspection before yolo install
how much value is there in the answer to this question for you
August 7, 2026 at 4:54 AM
how much value is there in the answer to this question for you
This is very Intuitive in the academic high praise sense
July 24, 2026 at 2:45 PM
This is very Intuitive in the academic high praise sense