---
base_model:
- Lambent/Qwen3-4B-Base-Continued-GRPO-B
- Lambent/Qwen3-4B-Base-Continued-GRPO
library_name: transformers
tags:
- mergekit
- merge
license: apache-2.0
---
Credit to [virtuous7373](https://huggingface.co/virtuous7373) for posting the CABS implementation used here.

CABS sparsified version of the original GRPO training Lambent/Qwen3-4B-Base-Continued-GRPO, merged with TIES to the Lambent/Qwen3-4B-Base-Continued-GRPO-B model.


  | Task           | Metric     | Base   | Trained | Delta   |
  |----------------|------------|--------|---------|---------|
  | arc_easy       | acc        | 0.7891 | 0.7870  | -0.27%  |
  | arc_easy       | acc_norm   | 0.7609 | 0.7605  | -0.05%  |
  | lambada_openai | acc        | 0.6912 | 0.6984  | +1.04%  |
  | lambada_openai | perplexity | 4.2433 | 4.0490  | -4.6% ↓ |
  | openbookqa     | acc        | 0.3160 | 0.3180  | +0.63%  |
  | openbookqa     | acc_norm   | 0.4100 | 0.4120  | +0.49%  |
  | piqa           | acc        | 0.7797 | 0.7807  | +0.13%  |
  | piqa           | acc_norm   | 0.7807 | 0.7807  | +0.00%  |


This is a merge of pre-trained language models created using [mergekit](https://github.com/cg123/mergekit).

## Merge Details
### Merge Method

This model was merged using the [TIES](https://arxiv.org/abs/2306.01708) merge method using ./merged_models/llm-judge-merged-fixed as a base.

### Models Merged

The following models were included in the merge:
* ./merged_models/grpo-cabs

### Configuration

The following YAML configuration was used to produce this model:

```yaml
# TIES merge: Judge as base, inject sparse GRPO knowledge
merge_method: ties
base_model: ./merged_models/llm-judge-merged-fixed
models:
  - model: ./merged_models/grpo-cabs
    parameters:
      density: 0.5
      weight: 0.4
dtype: bfloat16

```