Jinkai Zhang

活動8年です。 これからも、ずっと真夜中でいいのに。

8周年おめでとうございます！ 2020年にずとまよの曲を聴いて以来、ずっと大好きで、気づけばもうこんなに長い時間が経っていました。 深夜に不安で押しつぶされそうな時も、いつもACAねさんの歌声に救われてきました。 いつも本当にありがとうございます😭 これからもずっと応援しています！ ずっと大好きです！

わっずとまよ８才、日々ありがとよ まだまだ夜は明けないなあ。。 やれんの…？

Thanks to everyone who shared advice and perspectives. Your comments helped me think more clearly about the risks and potential returns of the path.

Seeking advice on a career / grad school decision. Background: I’m a CS undergraduate from China. I applied to CS/ML PhD programs for Fall 2026, but did not receive a PhD offer. I currently have a co-first-author ICML paper and two industry internships. My research interests are mainly in LLM reasoning and alignment, RL, optimization, test-time scaling methods, self-evolving methods, and agentic systems. When I applied for PhD programs, my ICML paper was not finished yet, so it was not included in my application materials. After being rejected from the NYU PhD program, my application was automatically considered for the MS program, and I unexpectedly received an offer from NYU Tandon MSCS. The difficult part is the cost. The total two-year cost would likely be around $110k, and I would need to finance almost all of it through loans. This means the decision only seems financially reasonable if I can either: 1. find a job in the US after graduation, or 2. use the MS as a bridge to a PhD program. If the loan repayment period is short, I may need to prioritize finding a job first to avoid serious debt pressure, even though my long-term interest is still research. And I hope to enhance my research capability to a greater extent to better cope with possible changes in the future. The upside of accepting the offer is that NYU could give me access to the US job market, possible on-site RA opportunities, in-person interaction with faculty, and maybe a better platform for applying to PhD programs or ML/SWE/Applied Scientist roles. The risks are also obvious: high financial cost, visa uncertainty, and the possibility that I may not be able to convert the MS into either a good US job or a PhD opportunity. I’d really appreciate advice from people who have gone through similar decisions. In particular: 1. How helpful is NYU Tandon MSCS for US job search and/or PhD applications? 2. Is taking a large loan for this program worth it? Any honest thoughts or experiences would be appreciated.

@xiamaz Thanks for pointing this out! This is actually a completely new direction for me to consider.

@atomcatt_02 If you are interested in alignment, maybe MATS or other fellowships might also be interesting: matsprogram.org Nice thing is they are mostly free/funded.

I did my undergrad at RUC. It is a good school in China, but it is not THU/PKU-level in terms of international CS reputation, so I am not sure how much of a disadvantage that creates. My main concern is indeed recommendation letters. My current letters are from supervisors in mainland China who supervised my previous papers. They can write strong letters, but I think that their letters may carry less weight than a strong letter from a US professor, especially for U.S. PhD admissions. That is one of the main reasons I am considering an MS program like NYU. But indeed, the financial cost of pursuing a master's degree is too high for me. It's not a sum of money that I can casually come up with Thank you for your comment. It allows me to weigh this issue from more perspectives

Hi, CMU PhD student here. Some important questions: 1. What undergrad did you go to in China? If you went to a reputable school, the NYU MS name itself will not help. 2. Do you have good recommendation letters? How many? From who? 3. Who do you see yourself working with at NYU? If you have good recs and come from a reputable school, I might reapply next semester. But a good rec letter would have likely indicated that the ICML paper was high quality and conference level work in the first place. So my guess is you might not have enough recommendations and may want to do research with someone else who can write you a strong rec letter. Tldr; evaluate how strong your profile is as a whole. If you go to NYU, do it because you'll work with a professor or student who will do impactful research with you.

Yeah, that makes a lot of sense. If I choose to do an MSCS at NYU, the main purpose would be to find RA opportunities, build connections, get stronger recommendation letters, and do some research to make a future PhD application more competitive. If money were not a major constraint, that might still be a reasonable strategy. But if I have to finance it through loans, the repayment pressure could easily disrupt my later plans. Thanks for the comment, it’s genuinely helpful.

Industrial research intern (with a paper or tech report) ≥ academic RA that actually gets you papers > doing an MSCS just to land an NYU RA spot and squeeze some papers out of it > any RA/intern with zero papers. I’d recommend doing an independent study, publishing papers yourself, and just looping in a prof for advising + co-authorship (CC is already insanely strong anyway). Don’t waste your time and money on random grunt-work gigs where you’re basically free labor for someone else’s projects.

MesaNet is interesting because it reframes sequence representation as a solved local regression problem rather than a softmax attention lookup. That makes the architecture less a simple Transformer replacement and more an adaptive memory mechanism, where compute is spent to fit the state to the observed context.

@OpenAI I’ve been waiting all day for the GPT-5.5 release, and it’s finally here. As one of the most powerful models, I’m really looking forward to seeing how it performs in research and coding, as well as the overall user experience compared with GPT-5.4.

Introducing GPT-5.5 A new class of intelligence for real work and powering agents, built to understand complex goals, use tools, check its work, and carry more tasks through to completion. It marks a new way of getting computer work done. Now available in ChatGPT and Codex.

@feijianghan Thank you for your advices, this is very helpful.

@atomcatt_02 1. If you contacted the supervisor before, ask them if you can collaborate online on a manuscript or a project (like RA). 2. Discuss your application with an existing graduate student in the dept.

I am trying to make peace with the fact that I failed this year’s PhD application cycle. Only my own hesitation, exhaustion, fear, or whatever it was that kept me from finishing what I meant to do. I just let this application season pass, and now I am sitting with the weight of that. It is a strange kind of failure, grieving something that never fully took shape. I keep thinking maybe I should have pushed harder, been more disciplined, been less afraid, been better. And now the cycle is over, and I am left with this quiet, stupid ache of knowing I wanted something and still could not bring myself to reach for it in time. Still, I think part of me knows this is not the end of the story, even if it feels like one. Missing this year does not erase the reasons I wanted a PhD in the first place. It does not mean I am incapable of doing serious work or that I was foolish to imagine a different future for myself. It just means I am here, and maybe the only thing to do now is be honest about that, without turning it into a final verdict on my life. I can accept the result and admit that I was not fully prepared for this year’s PhD applications. I decided to apply too late, and in a competition that has become more intense each year, my record was not enough. I do not want to hide that behind excuses. I did put in a great deal of effort, and that is what makes the outcome harder to accept. In the end, I received only one interview, from a famous university. For this round of applications, this university was undoubtedly my dream school, which made that interview especially important to me. That interview felt like a meaningful chance, but I could not turn it into the result I hoped for. In the end, I was considered on the waitlist, and was not the top candidate among those the professor interviewed. When I received the news that the professor could not offer me a position, I was extremely disappointed. Even though I knew the possibility was small, I still could not stop myself from hoping. I was in Tokyo then, trying to release some of the pressure, and I had already told myself that I probably would not get an offer. But knowing something is likely and actually hearing it are still two different things.

I feel quite lost. I do not know what the next step should be. I am not sure whether it would be better to find a job first or to try to join a lab in the US as an RA or intern. Financial considerations are also an important factor. Although my supervisor told me that doing RA work may not be the best option, because many professors recruit a large number of interns without being able to guarantee a return offer, and in many cases the position may not even be paid, choosing to work directly also comes with its own difficulties. With only a bachelor’s degree, it is hard to find a position that is truly research-oriented. It really feels like a dilemma. My long-term goal is actually quite clear: I still hope to go further on the path of research. Exploring the boundaries of a field is something that genuinely excites me, and I have never felt that research is dull or meaningless. Of course, salary is also an important consideration. From a practical perspective, if I complete a PhD before entering industry, my earning potential would likely be much higher than if I start working now with only an undergraduate degree. But the most important question is still: what should I do now? What is the right choice for the next stage of my life? During a class study trip, I had the chance to talk with a very impressive friend of mine, hoping to get some advice from him. Although we are the same age, he has much more experience than I do, and as someone who succeeded in this year’s application cycle, he understands the process far better than I do. I thought I might be able to gain some key insights from him, and that turned out to be true. In the context of PhD applications in the US, the phrase “connection is all you need” really does contain some truth. Under similar conditions, having one or two strong recommendation letters from US-based advisors can be a major advantage. In some cases, even if an applicant’s publication record is not as strong as that of someone with only recommendation letters from mainland China, they may still be in a more favorable position because of those stronger connections. Based on this, his advice to me was that if I still want to apply for a PhD, it would be best to join the lab of a well-regarded and kind advisor as an RA, do research that the advisor truly recognizes, and build a stronger academic connection. Even if I cannot get a return offer in the end, obtaining a strong recommendation letter would still give me a much better chance in the next application cycle. I'm very grateful to him. At least after that conversation, I was no longer as completely at a loss as before. Although the road ahead is still uncertain, it seems that I can finally see a clue to keep moving forward.

@0x__tom これはかなり大きい転換点だと思います。推論や画像理解まで含むモデルがスマホ上で実用速度に乗ると、研究対象だったローカルAIが一気に一般ユーザーの選択肢になります。

海外でGemma 4のスマホデモがバズってる。 ↓↓↓スペック↓↓↓ ・Gemma 4 E2B（MLX最適化） ・iPhone 17 Proで約40トークン/秒（個人デモの計測値） ・128Kコンテキスト ・コーディング、数学、画像理解、シンキングモード ・完全オフライン、APIキー不要 ・Google AI Edge Galleryアプリ（iOS/Android） ・Apache 2.0 ↓↓↓何がすごいか↓↓↓ ・クラウド接続なしで動く → プライバシー完全保護 ・アカウント不要 → 誰でも即使える ・商用利用自由 → アプリに組み込み放題 ↓↓↓インパクト↓↓↓ スマホ1台でAIエージェントがローカル完結。APIコストゼロ。57億人以上のスマホユーザーがAIホストになりうる世界。 ちなみに僕が先日紹介したGemma 4 Agent Skillsの続きなんだよね。あの時「AIエージェントを使える人口が桁違いに増える」って書いたけど、マジでもう現実になってる。スマホでこの性能が出るなら、「AIが使えない人」がいなくなる日はかなり近い。 みんなはどう思う？

@Google Excited to see stronger open source models reach the community! Bringing high quality reasoning and agentic workflows onto local hardware could materially expand both research and real world deployment. Looking forward to seeing the actual performance of Gemma4.

We just released Gemma 4 — our most intelligent open models to date. Built from the same world-class research as Gemini 3, Gemma 4 brings breakthrough intelligence directly to your own hardware for advanced reasoning and agentic workflows. Released under a commercially permissive Apache 2.0 license so anyone can build powerful AI tools. 🧵↓

@ddvd233 我们有个2分哥把标准参数表示和transformers库的参数作为weakness，ack完全没看rebuttal解释过的问题，然后提了更没水平的意见…真气笑了😅

ICML Review 真的有点离谱了。Rebuttal 结束，有个 Reviewer 提了几个「新问题」，但问题是，这些新问题完全就是原来 Review 一模一样的问题，只是稍微改了改词汇顺序… 就说，你用 LLM 审稿提问题我没意见，只是咱们能不能在让 AI 提问题的时候把我写的 Rebuttal 也一并贴上去呢...

Problem: RL alignment is costly, unstable & needs retraining for reward changes. How: Reformulate decoding as Monte Carlo energy estimation + importance sampling acceleration. Outperforms post-trained RL & TTS baselines on reasoning, coding, and science tasks. ETS: Energy-Guided Test-Time Scaling for Training-Free RL Alignment Paper: arxiv.org/abs/2601.21484 Code: github.com/sheriyuo/ETS #AI #LLM #RL #Inference #TTS #Sampling

@sheriyuo I’m the co-author of this paper. You can also ask me anything about this paper!