Bobby (@bobbycxy) header
Bobby (@bobbycxy) profile picture

continual learning @adaption_ai

Singapore
Joined February 2020
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Iโ€™m joining the Weizmann Institute as an Assistant Professor (known[?] as โ€œSenior Scientistโ€ ๐Ÿง‘โ€๐Ÿ”ฌ) and starting CoLab๐Ÿถ! We do pretraining, agents and evaluation the way science should be done: in a community, together. Come research with us ๐Ÿ‘‡ discord.gg/gVeGEjWTtv
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The biggest hurdle in frontier AI is curating high-quality, diverse data. What happens if you need to post-train a model for a new capability, but have zero data? Today, we release the technical report for Invent a Dataset.
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Can your AI agent tell when another agent is lying? Our MindGames report is accepted at NeurIPS! ๐ŸŽ‰ 944 agent submissions. 76 teams. ~30K games. Built on TextArena, with game data + top competition agents to test against. Paper and code link below โ†“
๐Ÿš€ Happening tomorrow! Join us at the MindGames Competition Workshop if you're interested in LLMs in games, interactive environments, or multi-agent systems. โฐ Sunday, Dec 7, 8:00โ€“10:45 AM ๐Ÿ“ San Diego Convention Center Ballroom 6C-F Come chat with us and hear the winning teams and the keynote speaker share how they designed adaptive agents!
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"Skill Issue Are Skills Language-Invariant in LLMs?" Multilingual LLMs can actually become better or worse at the same skill depending on the language theyโ€™re using. This paper tests that cleanly by making the same model play against itself in different languages while keeping the game, rules, and actions fixed. The result is surprisingly large gaps in reasoning and strategy across languages, and in some cases switching only the reasoning language to English recovers most of the lost performance. So the skill may already be inside the model, but the language can determine whether it can actually access and use it. alphaxiv.org/pdf/2608.skill-โ€ฆ
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Nim was one game where differences were so clear. The game has an optimal strategy with called "Nim-Sum". We went through game logs and found some languages knew it and others just had it missing from their knowledge (verified it quantitatively)
Replying to @bobbycxy
We had models play 518,400 games against themselves, changing only the language interface. If skills were language-invariant, every matchup would look like the diagonals (~0.0). But they don't. Winโ€“loss margins shift, spatial reasoning fails along different axes, bluffing rates in poker vary >2x, and in Nim, the optimal strategy that shows up reliably in English often doesn't surface in Arabic or Hebrew at all.
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for quite a while I was trying to find a way to measure x-ling consistency without resorting to knowledge, @bobbycxy and @LChoshen came with this games approch. It is honestly brilliant!
Will the same model become a different player depending on the interface language? We report our findings in our paper "Skill Issue: Are Skills Language-Invariant in LLMs?". And with it, TextArena is now multilingual ๐ŸŒ with 65 games in 193 languages. ๐Ÿงต
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I surely thought this was all down to the amount of training data, but some languages will over- or under-perform. I think this is really worth digging into in the future! xitter.cf/bobbycxy/status/209338โ€ฆ
Replying to @bobbycxy
Is this just "more training data = stronger language"? Partly. Web-text availability predicts language strength at r โ‰ˆ 0.79. But the deviations are what's interesting. Malay has the smallest corpus, yet beats Hebrew for every model; likely riding script-based transfer (consistent with ECLeKTic). Chinese reaches near-English margins with ~20x less web text, but only for 2 of 3 models. Data quantity and script each explain part of the language hierarchy. The rest is model-specific.
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Bobby retweeted
Will the same model become a different player depending on the interface language? We report our findings in our paper "Skill Issue: Are Skills Language-Invariant in LLMs?". And with it, TextArena is now multilingual ๐ŸŒ with 65 games in 193 languages. ๐Ÿงต
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Will the same model become a different player depending on the interface language? We report our findings in our paper "Skill Issue: Are Skills Language-Invariant in LLMs?". And with it, TextArena is now multilingual ๐ŸŒ with 65 games in 193 languages. ๐Ÿงต
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All of this runs on Multilingual TextArena: 65 games (>60% of the collection) in 193 languages, MIT licensed. 8 languages verified by native speakers, the rest via tiered pipelines with per-language fidelity scores. Each player can get its own language (e.g. player 0 in English, player 1 in German). The same model plays itself across two interfaces, letting you compare skills, behavior, and strategy directly. Multilingual eval shouldn't just ask "does the model understand X?" It should ask "does it behave the same in X?"
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Is Gemma 4 multilingual? Not really๐Ÿค– A true multilingual LLM should share language-invariant skills like spatial understanding across languages. It doesnt๐Ÿ˜ฑ We had LLMs play 2D board games against themselves in different languages๐Ÿ•น๏ธ and found 2D performance is language dependent
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Bobby retweeted
superintelligence by the people for the people
Replying to @PrimeIntellect
We're excited to be joined by angels who are building the frontier themselves, many of whom we work closely with: @johnschulman2 (Thinking Machines), @dwarkesh_sp, @AravSrinivas (Perplexity), @karimatiyeh (Ramp), @levie (Box), @_milankovac_ (Tesla), @winstonweinberg (Harvey), @amspector100 (Flapping Airplanes), @jeffwang (Cognition), @_arohan_ (Core Automation), @marksaroufim (Core Automation), @mikeknoop (Zapier, Ndea), @eastdakota (Cloudflare), @BrendanFoody (Mercor), @devanshpandey (Standard Intelligence), @hwchase17 (Langchain), @nicoup (Fleet) and many more
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If youโ€™re at @icmlconf, come by my poster at Hall A 5pm #1801! Iโ€™ll be presenting our self-play framework that helps LLMs become stronger game-playing agents across negotiation, perfect-, and imperfect-information games, using exploration and retention. Co-first work with @xiynfi1520580 and @KevinWang_111!
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Full author team: Yunfei Xie @xiynfi1520580, Kevin Wang @KevinWang_111, Jianzhu Yao @alexbert135, Zhizhou Sha @ZhizhouSha, Alexander Duffy @alxai_, Yihan Xi, Hongyuan Mei @hongyuan_mei, Cheston Tan, Chen Wei @_Chen_Wei_, Pramod Viswanath @viswanathpramod, Atlas Wang!! Grateful to have worked with this group! And special thanks to Sentient @SentientAGI and Good Start Labs @goodstartlabs for supporting the experiment costs! Paper ๐Ÿ”—: openreview.net/challenge?redโ€ฆ
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Announcing our $130M Series A to build the Open Superintelligence Stack Led by Radical Ventures, with NVIDIA, Intel Capital, Dell Capital, and existing investors Train, deploy, and continuously improve your own models using our stack. Own your intelligence.
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#MachineUnlearning is notoriously difficult, but how hard is it to unlearn different data? In our #ICML2026 paper, we show that unlearning is harder when the forget and retain data are more similar. Introducing HAMU: a hardness-aware unlearning algorithm that 1. quantifies unlearning hardness, 2. updates the model based on per-iteration hardness, 3. stops when better forgetting would inevitably hurt retain utility, and 4. is scalable and practical for large, non-convex models such as LLMs. HAMU achieves stronger retainโ€“forget trade-offs than existing methods across image and text tasks. ๐Ÿ“ Join us (@chenjiangw @xinyuan3142 @RachaelSim2 Zhengyuan Liu, Nancy Chen @bryanklow) at our @icmlconf poster! ๐Ÿ“… Date: Wed July 8 โฐ Time: 2:30-4:15 PM ๐Ÿข Location: Hall A #3116 ๐Ÿ“„ Paper: openreview.net/forum?id=fr24โ€ฆ ๐Ÿ’ป Code: github.com/aoi3142/HAMU
๐ŸŽผ ๐ŸŽต ๐ŸŽถ... Time to party @icmlconf #ICML2026? Let's go! Wait, I'm the last to depart from ๐Ÿ‡ธ๐Ÿ‡ฌ ??? Don't miss out on the ๐๐”๐’ ๐ฑ ๐‰๐š๐ง๐ž ๐’๐ญ๐ซ๐ž๐ž๐ญ ๐’๐ฎ๐ฆ๐ฆ๐ข๐ญ ๐จ๐ง ๐’๐ž๐ฅ๐Ÿ-๐„๐ฏ๐จ๐ฅ๐ฎ๐ญ๐ข๐จ๐ง ๐จ๐Ÿ ๐€๐ˆ ๐€๐ ๐ž๐ง๐ญ๐ฌ ๐š๐ง๐ ๐Œ๐ฎ๐ฅ๐ญ๐ข๐š๐ ๐ž๐ง๐ญ ๐’๐ฒ๐ฌ๐ญ๐ž๐ฆ๐ฌ (9 Jul)! See link below: xitter.cf/bryanklow/status/20696โ€ฆ #LLMs #AgenticAI #AIAgents #AgenticMemory #DataSelection #ShapleyValue #MachineUnlearning #BayesianOptimization #SpeculativeDecoding
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