Hangliang Ding — Homepage

I am a Research Scientist at ByteDance Seed, graduated from Tsinghua University. I was fortunate to be advised by Hao Zhang (UCSD), Minjia Zhang (UIUC), and Jie Tang (THU) in the past.

I previously worked on efficient model architectures and video training infrastructure — including KV cache compression for long-context LLMs and sparse attention kernels and distillation pipelines for video diffusion models. I am now focused on self-evolving agents for long-horizon, real-world tasks.

I'm always excited to exchange ideas and collaborate on research. Feel free to reach out at email.

News

Dec 2025: Sliding Tile Attention deployed in production by Hunyuan Video 1.5 and Meituan LongCat Video.
May 2025: Paper MiniKV accepted at ACL 2025 Findings.
Apr 2025: Papers Sliding Tile Attention and Efficient-vDiT accepted at ICML 2025.

Projects

FastVideo

Accelerate video diffusion model generation

First open distillation recipes for video DiT, with support for distilling and finetuning state-of-the-art open video DiTs (including Sliding Tile Attention).
Scalable training with FSDP, sequence parallelism, and selective activation checkpointing — near-linear scaling to 64 GPUs.
Memory-efficient finetuning with LoRA, precomputed latents, and precomputed text embeddings.

Sliding Tile Attention

Fast tile-level sparse attention for video diffusion · ICML 2025

The first hardware-efficient 2D/3D sliding-window attention implementation, achieving 58.79% MFU.
Up to 17× attention speedup over FlashAttention-2 on video generation.
Deployed in production by Hunyuan Video 1.5 and Meituan LongCat Video.

Efficient-vDiT

Block-sparse video diffusion with Attention Tile · ICML 2025 @ Es-FoMo

Discovered the Attention Tile pattern in 3D-DiT and built an efficient video diffusion pipeline.
Achieves 7.8× speedup on a single GPU through block-sparse kernels and consistency distillation.

AgentBench

Evaluating LLMs as agents · ICLR 2024

Classifies real-world browsing options and designs an auto-collected browsing-traces data framework, building a more efficient language-model-driven automated web navigation agent.

Miscellaneous

Guitar. Lead guitarist of Prime (素数), a math-rock band active in Beijing. Recent live performance at Prime Lab.
Pingpong. Member and referee of our department's ping-pong team.