Zhangchen Xu's picture

Zhangchen Xu PRO

zhangchenxu

·

https://zhangchenxu.com/

AI & ML interests

LLM Data, Alignment, Post-Training, Safety

Recent Activity

authored a paper 4 days ago

VisualSphinx: Large-Scale Synthetic Vision Logic Puzzles for RL

updated a collection 4 days ago

VisualSphinx-V1

upvoted a paper 4 days ago

VisualSphinx: Large-Scale Synthetic Vision Logic Puzzles for RL

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zhangchenxu's activity

upvoted a paper 4 days ago

VisualSphinx: Large-Scale Synthetic Vision Logic Puzzles for RL

Paper • 2505.23977 • Published 8 days ago • 9

upvoted a paper 8 days ago

Personalized Safety in LLMs: A Benchmark and A Planning-Based Agent Approach

Paper • 2505.18882 • Published 13 days ago • 14

upvoted a paper 15 days ago

TinyV: Reducing False Negatives in Verification Improves RL for LLM Reasoning

Paper • 2505.14625 • Published 18 days ago • 13

upvoted an article 3 months ago

Article

Open R1: Update #3

By

and 9 others •

Mar 11

• 292

upvoted a paper 3 months ago

KodCode: A Diverse, Challenging, and Verifiable Synthetic Dataset for Coding

Paper • 2503.02951 • Published Mar 4 • 31

upvoted a collection 3 months ago

KodCode-V1

KodCode-V1 is the largest fully-synthetic open-source dataset providing verifiable solutions and tests for coding tasks. • 6 items • Updated Apr 2 • 2

upvoted 2 collections 4 months ago

Small Model Learnability Gap: Models

24 items • Updated Feb 24 • 2

Small Model Learnability Gap: Dataset

6 items • Updated Feb 21 • 3

upvoted a paper 4 months ago

Small Models Struggle to Learn from Strong Reasoners

Paper • 2502.12143 • Published Feb 17 • 38

upvoted a collection 5 months ago

Magpie Reasoning Datasets

Reasoning datasets built by Magpie and its friends! • 8 items • Updated Jan 27 • 10

upvoted an article 5 months ago

Article

Fine-tune a SmolLM on domain-specific synthetic data from a LLM

By

•

Jan 3

• 37

upvoted a collection 5 months ago

Magpie-Llama3.3 Datasets

Dataset built with Meta Llama 3.3 70B. • 3 items • Updated Jan 13 • 1

upvoted a paper 6 months ago

GRAPE: Generalizing Robot Policy via Preference Alignment

Paper • 2411.19309 • Published Nov 28, 2024 • 48

upvoted a paper 7 months ago

Stronger Models are NOT Stronger Teachers for Instruction Tuning

Paper • 2411.07133 • Published Nov 11, 2024 • 39

upvoted an article 8 months ago

Article

🇮🇹🇯🇵🇧🇷 Generating multilingual instruction datasets with Magpie 🐦‍⬛

By

•

Oct 21, 2024

• 19

upvoted a paper 9 months ago

Training Language Models to Self-Correct via Reinforcement Learning

Paper • 2409.12917 • Published Sep 19, 2024 • 139

upvoted a collection 9 months ago

MagpieLM

Aligning LMs with Fully Open Recipe + Synthetic Data Generated from Open-Source LMs. • 9 items • Updated Jan 13 • 16

upvoted 2 collections 10 months ago

Magpie Open Recipes

Open-aligned models using Magpie datasets. • 11 items • Updated Jan 13 • 1

Magpie-Llama3.1 Datasets

Dataset built with Meta Llama 3.1 70B. • 6 items • Updated Jan 13 • 3

upvoted a collection 11 months ago

Zebra Logic Bench

ZebraLogic Bench: Testing the Limits of LLMs in Logical Reasoning • 4 items • Updated Apr 30 • 5