riki
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rikimatsumoto.bsky.social
riki
@rikimatsumoto.bsky.social
data & econ | analytics @ georgia tech | recovering bean counter 😌📉 | very normal and regular | opinions solely my own

https://linktr.ee/rikimatsumoto
August 2025 CPI “was released on September 11” at 2.9% yoy.

wow thanks google Gemini for predicting the future 😐

(I am gonna pass out if this is actually spot on)
September 9, 2025 at 6:55 PM
Point metrics don’t tell you whether the model outputs align with the observed data distribution.

I.e., if the model has a good (low) RMSE but predicts a noticeably different distribution, it might be overfitting the center and neglecting the tails. Distributional metrics help identify this.
September 5, 2025 at 5:47 PM
June 11, 2025 at 9:25 PM
From trade tracker
www.brookings.edu/articles/tra...

Massive yoy percent increases in duties for March 2025 among top trading partners.
June 10, 2025 at 9:50 PM
From trade tracker www.brookings.edu/articles/tra...

Advanced release Census data shows approx 50% yoy increase in U.S. consumer goods imports in March.
April 29, 2025 at 10:46 PM
cannot stress enough how much this room needs a chandelier
December 25, 2024 at 2:03 AM
From Japan’s Family Income & Expenditure Survey (FIES)

- largest increases in housing, durables, energy, and food
- expenditure on clothing hasn’t recovered since 2020
- culture/recreation almost back up to 2019 levels
December 12, 2024 at 1:39 AM
ok i listened to a lot of Laufey this year.

#AppleWrapped
December 4, 2024 at 7:07 PM
Overall interesting event at Brookings on AI + Climate.

Arguably, it was 80%:
1) mitigating the impact of AI driven energy consumption, and;
2) AI for mitigating climate risks (better seed varieties)

Sparse on solving climate change or hitting emissions goals, overall bearish on that.
December 2, 2024 at 8:07 PM
Experimenting with the parameters for similarity score thresholds for RAG!

I asked a general Llama3 to evaluate and grade its own output. As the K top matches and similarity score increases, quality of the output drops precipitously!
November 26, 2024 at 9:17 PM
tree in national portrait gallery stuns in new picture
November 20, 2024 at 9:43 PM
November 16, 2024 at 6:19 PM
as the next POTUS said himself
November 14, 2024 at 2:39 PM
It’s giving Kuzan from #OnePiece
November 14, 2024 at 2:37 PM