Chao Xu

I'm interested in AI4MATH. Previously, I held interest in algorithms, combinatorial optimization, computational geometry and problem solving in general.

[Chao Xu @ChaoXuMath]

@jiahuiteddy I believe a lot of people, especially strong researchers, do research for learning purposes. However, the current system incentivize compete and getting results over actual learning, so there are people do research for other reasons.

[Boaz Barak @boazbaraktcs]

I am looking forward (though also more than a bit humbled) to welcoming Jacob to OAI and collaborating with him on AI safety.

[Dmitry Rybin @DmitryRybin1]

pre-training scaling laws => LLMs generalize on test data

I convinced myself that this implication can be derived without much cheating in math. I suspect this was known to many experts, but I never seen it written down explicitly.

[Ryan Williams @rrwilliams.bsky.social @rrwilliams]

I worry that Fable 5 may be getting too emotional to solve my problems 🧐

[Chao Xu @ChaoXuMath]

While attending Emléktábla Workshop, I realize most people are not using AI to it's full extent. So I wrote this so mathematicians can get started quickly https://t.co/na8QuFPdIb

[Chao Xu @ChaoXuMath]

@Air_Dolomiti I need a letter stating why a plane was delayed (for insurance purposes), where can I get it?

[Chao Xu @ChaoXuMath]

@JPRidgeway What tool did you use to find this character? and how to be sure that this character cannot be in the unicode?

[Chao Xu @ChaoXuMath]

#XSXFridgeSweeps

[XBOX @XBOX]

The one.

The only.

Xbox Series X Fridge giveaway.

Follow and retweet with #XSXFridgeSweeps for a chance to win the Xbox Series X Fridge.

Ends 11/04/20. Rules: https://t.co/4P5hCSBPcy

[Chao Xu @ChaoXuMath]

https://t.co/ixNZwNLjo3 #ShopNowPartyLater

[Chao Xu @ChaoXuMath]

at Changi Airport https://t.co/5kgoWhsvWj

[Chao Xu @ChaoXuMath]

in New York, NY https://t.co/avNmcEx0dz

[Chao Xu @ChaoXuMath]

I did some analysis and realize if I can save like 80% of my income, it is prob better to go Roth over Traditional. Of course, the actual situation is much more complicated, since investments are different and results are different depending on how... https://t.co/un5RFIy9Gx

[Chao Xu @ChaoXuMath]

so I tried this app today and it is pretty amazing... since I have accounts at different places, I still want to figure out what is the composition of my investments in one place. https://t.co/Eqp68UhtX6

[Chao Xu @ChaoXuMath]

Spent a few hours to obtain this particularly nice solution. https://t.co/qtMLvVupUx

[Chao Xu @ChaoXuMath]

Could there be a near-linear time algorithm for this? (the running time should only depend on n). I would like there to be literature on it, so people can refer to it in the future. https://t.co/jnW0KcU8a8

[Chao Xu @ChaoXuMath]

I'm really interested in this. https://t.co/NWBbiTEryr

[Chao Xu @ChaoXuMath]

The paper of mine and Qian Zhang was mentioned in this youtube video. The paper solves the following: Given the kin relation between you and X, can you find the shortest way of describing X, using only words from some allowed set? https://t.co/laxMxna2uC

[Chao Xu @ChaoXuMath]

What did the columns of the matrix get for Valentine’s day? Rose of the matrix.

[Chao Xu @ChaoXuMath]

Sometimes I need concrete bounds for the ellipsoid method. Given a separation oracle for a polytope P={x | Ax<=b}, find max_{x in P} cx, where A,b,c consists of integers with the absolute value no larger than M, and A... https://t.co/NSgGz3KXz5

[Chao Xu @ChaoXuMath]

The matroid theorist like to keep people in the loop, and coloop.