---
license: apache-2.0
language:
  - en
tags:
  - web-agent
  - process-reward-model
  - preference-data
  - SFT
size_categories:
  - 1K<n<10K
---

# surfPRM-data

SFT training data for **surfPRM**, a process reward model (PRM) for web agents.

- 9,821 pairwise step-preference samples stored as a single JSON array
- Each sample has one field `conversation` with `system` / `user` / `assistant` turns:
  the user turn contains the task intent, the current page's accessibility tree
  (AXTree), the previous action trajectory, the start/current URLs, and two candidate
  next actions; the assistant turn contains structured
  `<State>/<Criteria>/<Analysis>/<Answer>` reasoning ending in the preferred action
- The exact prompt template is documented in the model cards of the models trained
  on this data: [surfPRM-qwen3.5-4b](https://huggingface.co/polowitty/surfPRM-qwen3.5-4b)
  and [surfPRM-qwen3.5-9b](https://huggingface.co/polowitty/surfPRM-qwen3.5-9b)

## License

Released under Apache 2.0.