This repository contains the Qwen3-4B material GRPO batch-size-32 run. The repository name uses the project GRPO-TR naming convention, but the actual training method for this checkpoint is GRPO.

The repository root contains the best validation checkpoint, selected by validation mean@16. checkpoints/last/ contains the final checkpoint.

Performance

Dataset	Method	Base model	Train batch size	Best val mean@16	Best checkpoint	Final val mean@16	Final checkpoint
Material / SciKnowEval material	GRPO	Qwen3-4B	32	76.60%	60	76.26%	100

Validation Mean@16

step	val_mean16	percent
10	0.668882978723	66.89%
20	0.695478723404	69.55%
30	0.716755319149	71.68%
40	0.739361702128	73.94%
50	0.754654255319	75.47%
60	0.765957446809	76.60%
70	0.750000000000	75.00%
80	0.750664893617	75.07%
90	0.756648936170	75.66%
100	0.762632978723	76.26%

Detailed Training Hyperparameters

Section	Parameter	Value	Source
Run identity	`Base model`	`Qwen/Qwen3-4B`	queue/script override
Run identity	`Dataset`	`Material / SciKnowEval material`	run_qwen3_generalization.sh
Run identity	`Method`	`GRPO`	run_qwen3_generalization.sh
Run identity	`Config`	`baseline_grpo`	run_qwen3_generalization.sh
Run identity	`Experiment`	`qwen3gen-material-GRPO-Qwen-Qwen3-4B-mbs8-train32-rollout8-lr1e-6-vllm0.8`	run_qwen3_generalization.sh
Run identity	`W&B run`	`run-20260702_125526-lnzvk3fv`	wandb
Data	`Train file`	`datasets/sciknoweval/material/train.parquet`	script override
Data	`Validation file`	`datasets/sciknoweval/material/test.parquet`	script override
Data	`Train batch size`	`32`	queue/script override
Data	`Train max samples`	`3200`	queue/script override
Schedule	`Total training steps`	`100`	queue/script override
Schedule	`Validation before train`	`False`	queue/script override
Schedule	`Save frequency`	`10`	queue/script override
Schedule	`Validation frequency`	`10`	queue/script override
Sequence	`Max prompt length`	`2048`	queue/script override
Sequence	`Max response length`	`8192`	queue/script override
Sequence	`Max model length`	`10240`	queue/script override
Rollout	`Train rollout n`	`8`	queue/script override
Rollout	`Validation rollout n`	`16`	queue/script override
Rollout	`vLLM GPU memory utilization`	`0.8`	queue/script override
Optimization	`Learning rate`	`1e-6`	GRPO method override
Optimization	`Weight decay`	`0.01`	script override
PPO/GRPO	`PPO mini batch size`	`8`	queue/script override
PPO/GRPO	`Normalize GRPO advantages by std`	`False`	baseline_grpo.yaml / script override
Rollout correction	`Importance sampling mode`	`token`	script override
Rollout correction	`IS threshold`	`2.0`	script override
Checkpoint/Logging	`Checkpoint root`	`checkpoints/datasets/sciknoweval/material/qwen3gen-material-GRPO-Qwen-Qwen3-4B-mbs8-train32-rollout8-lr1e-6-vllm0.8`	script override
Checkpoint/Logging	`Latest checkpointed iteration`	`100`	latest_checkpointed_iteration.txt
Checkpoint/Logging	`External actor archive`	`checkpoints/datasets/sciknoweval/material/qwen3gen-material-GRPO-Qwen-Qwen3-4B-mbs8-train32-rollout8-lr1e-6-vllm0.8/_actor_archive`	preserve_actor_checkpoints.py
Checkpoint/Logging	`Logger`	`console, wandb`	ppo_trainer.yaml
PPO/GRPO	`Policy loss mode`	`vanilla`	method override
PPO/GRPO	`Actor KL loss coef`	`0.0`	method override

Raw result and artifact files:

results/validation_mean16.csv
results/training_scores.csv
results/hyperparameters.csv
results/training_score.png
results/training_score.svg
artifacts/config.yaml
artifacts/wandb-summary.json
artifacts/wandb-metadata.json
artifacts/output.log
artifacts/queue.log

Usage

python

from transformers import AutoModelForCausalLM, AutoTokenizer

repo_id = "SeongryongJung/Qwen3-4B-Material-GRPO-TR"
tokenizer = AutoTokenizer.from_pretrained(repo_id, trust_remote_code=True)
model = AutoModelForCausalLM.from_pretrained(
    repo_id,
    torch_dtype="auto",
    device_map="auto",
    trust_remote_code=True,
)

Source

Checkpoint: checkpoints/datasets/sciknoweval/material/qwen3gen-material-GRPO-Qwen-Qwen3-4B-mbs8-train32-rollout8-lr1e-6-vllm0.8
Root actor checkpoint: checkpoints/datasets/sciknoweval/material/qwen3gen-material-GRPO-Qwen-Qwen3-4B-mbs8-train32-rollout8-lr1e-6-vllm0.8/_actor_archive/global_step_60/actor
Last actor checkpoint: checkpoints/datasets/sciknoweval/material/qwen3gen-material-GRPO-Qwen-Qwen3-4B-mbs8-train32-rollout8-lr1e-6-vllm0.8/global_step_100/actor
W&B run: run-20260702_125526-lnzvk3fv
Queue log: artifacts/queue.log