Ivy Xueqing Yang

Looking forward to attend the 2025
Omaha Macroeconomic Forum. This event is highlighted with some frontier methods.
Dr.Zhigang Feng will host this event, and he makes it online for free sites.google.com/site/zfeng20...
Please come to join us!

YouTube video by Bain Capital Ventures History of Diffusion - Sander Dieleman

Here's the third and final part of Slater Stich's "History of diffusion" interview series!

The other two interviewees' research played a pivotal role in the rise of diffusion models, whereas I just like to yap about them 😬 this was a wonderful opportunity to do exactly that!

YouTube video by Bain Capital Ventures History of Diffusion - Jascha Sohl-Dickstein

Great interview with @jascha.sohldickstein.com about diffusion models! This is the first in a series: similar interviews with Yang Song and yours truly will follow soon.

(One of these is not like the others -- both of them basically invented the field, and I occasionally write a blog post 🥲)

YouTube video by Bain Capital Ventures History of Diffusion - Yang Song

Amazing interview with Yang Song, one of the key researchers we have to thank for diffusion models.

The most important lesson: be fearless! The community's view on score matching was quite pessimistic at the time, he went against the grain and made it work at scale!

www.youtube.com/watch?v=ud6z...

A flash visit of the new place 👀

We are pleased to announce that the Call for Papers for the 2025 CEMLA Conference in Miami on November 6-7 is now open. Submission deadline: August 8, 2025, to conference@cemla.org.  See the full call for papers: www.cemla.org/actividades/...

Underway in Mexico City for the CEMLA 2025 Latin American Journal of Central Banking Conference. My colleague Manuel Santos gives a keynote today, I give one tomorrow
www.cemla.org/actividades/...

Love this opening in Shengbo Eben Li’s book. It embeds the acient Chinese wisdom into the understanding of RL.
道生一，一生二，二生三，三生万物。

I would not achieve this without the help of my advisor @bellmanequation.bsky.social and all other faculties from the Econ department in MHBS.
I will attend the Midwest Macro Meeting 2025 to present our paper (with my advisor) as an incoming assistant professor in SIUE.

Chinese Students on U.S. Campuses Are Ensnared in Political Standoff Some say their visas were revoked this week; Beijing warns other nationals to reconsider study plans in America.

Mounting U.S.-China tensions are forcing a rupture in the long love affair between Chinese students and American colleges.

NoahWilliams.xyz - Research ACCEPTED OR FORTHCOMING PAPERS Optimal Contracts with Hidden Risk with Rui Li. Accepted subject to minor revision, Review of Economic Dynamics Latest Version: June 2024. Full Paper: PDF A Learning Mo...

This blowing up, so... check out my SoundCloud
www.noahwilliams.xyz/research

Bitter Lesson¹ maximalists seem to ignore the distinction between AI capability improvement and AI-based product development. When it comes to the latter, the Bitter Lesson has never been true, and it would be silly to suggest that it is.

¹ www.incompleteideas.net/IncIdeas/Bit...

Turing Award Goes to A.I. Pioneers Andrew Barto and Richard Sutton Andrew Barto and Richard Sutton developed reinforcement learning, a technique vital to chatbots like ChatGPT.

It’s about time! 🎉🎉🎉🎉🎉🎉🎉 www.nytimes.com/2025/03/05/t...

TaxAI: A Dynamic Economic Simulator and Benchmark for Multi-Agent Reinforcement Learning Taxation and government spending are crucial tools for governments to promote economic growth and maintain social equity. However, the difficulty in accurately predicting the dynamic strategies of div...

arxiv.org/abs/2309.16307

Public financing under balanced budget rules This paper analyzes the impact of a balanced budget rule (BBR) on government financing costs and its implications for the government balance sheet. Ex…

Always great to see former students getting published.
www.sciencedirect.com/science/arti...
Public financing under balanced budget rules” by Minjie Deng and Chang Liu out now in Review of Economic Dynamics.

A whopping 26 study sections are not meeting today: AI, BDE, BTEN, CMAD, CMBG, CPSS, DHMI, EDIT, GVE, HBPP, IHD, ISD, MAI, MCTC, MFSR, NMBH, NPAS, ODCS, ODHS, PN, SMN, SSPB, THI, VID, ZRG1 F02A D 20, ZRG1 MCST U 55*

Happy to host my former students Zehao Li (now at CHUHK-Shenzhen) and Hsuan-Chih Lin (now at National Taiwan University) for a workshop at Miami Herbert yesterday, along with my current student @yangivyxq.bsky.social

Looking forward to our conference New Challenges for Fiscal & Monetary Policy next week at Miami Herbert Business School. Full program below, papers and more details here: www.noahwilliams.xyz/research/mfp...

Journal of Economic Perspectives Vol. 39 No. 1 Winter 2025

Our practical guide to shift-share IV is now out in the JEP!

www.aeaweb.org/issues/793

(Ungated version: www.dropbox.com/scl/fi/el9yn...)

📢 Call for papers!

We are organizing the 5th Early Career Workshop in Quantitative Political Economy on 19-21 May 2025 at King’s College London!

Keynotes: Sonia Bhalotra (Warwick) and Peter van der Windt (NYU-Abu Dhabi).

No fee, travel grants available!

Submit at: tinyurl.com/qpeearly

Adding fixed effects is supposed to reduce bias — but under realistic parameter heterogeneity, it can make bias worse

I wrote a post explaining how and why this can happen, with simulations and what you can do about it

(Video: results summary)

Links to post and Python code in replies

#EconSky

Last year's workshops were some of the most unique, weird, exciting ones I've ever attending from "Finding the Frame" to "RL Beyond Rewards" to "Deployable RL". I'm so excited for this year's unexpected entrants.

Instrumental Variables with Time-Varying Exposure: New Estimates of Revascularization Effects on Quality of Life The ISCHEMIA Trial randomly assigned patients with ischemic heart disease to an invasive treatment strategy centered on revascularization with a control group assigned non-invasive medical therapy. As...

arxiv.org/abs/2501.01623

Some tips for preparing for preliminary job market interviews!

New paper: benjaminmoll.com/challenge/

Thank you for inviting me Michael! Your topic seems not my field, I was using RL tool to research the wealth inequality question. There are lots of scholars research on the impact of AI rather than using it.

Thank you Kit！

Identifying a macroeconomic shock on households is hard when there is no explicit treated group, discontinuity of the shock on any dimension, and if the shock is time-varying along with too many confounding variables.

I cope with these issues in my JMP, showing: