Qwen1.5-MoE-2x7B

Description

This model is created using MoE (Mixture of Experts) through mergekit based on Qwen/Qwen1.5-7B-Chat and abacusai/Liberated-Qwen1.5-7B without further FT.

It utilizes a customized script for MoE via mergekit, which is available here.

Due to the structural modifications introduced by MoE, the use of this model requires custom modeling file and custom configuration file. When using the model, please place these files in the same folder as the model.

This model inherits the the tongyi-qianwen license.

Benchmark

The benchmark score of the mt-bench for this model and the two base models are as follows:

1-turn

Model	Size	Coding	Extraction	Humanities	Math	Reasoning	Roleplay	STEM	Writing	avg_score
Liberated-Qwen1.5-7B	7B	4.4	7.8	6.95	5.0	6.4	7.6	7.65	8.85	6.83125
Qwen1.5-7B-Chat	7B	4.4	7.7	9.6	6.9	7.0	8.7	9.65	9.7	7.95625
This model	2x7B	5.1	7.4	9.45	6.4	7.2	8.65	9.75	9.8	7.96875

2-turn

Model	Size	Coding	Extraction	Humanities	Math	Reasoning	Roleplay	STEM	Writing	avg_score
Liberated-Qwen1.5-7B	7B	4.4	6.2	7.1	3.0	5.7	7.4	6.3	3.5	5.450
Qwen1.5-7B-Chat	7B	4.5	8.0	9.9	4.9	5.0	8.9	9.4	8.4	7.375
This model	2x7B	4.7	7.0	10.0	4.8	4.3	8.6	9.5	7.3	7.025

Although the benchmark scores have slightly deteriorated, it seems that this is due to the poor performance of the Liberated-Qwen1.5-7B model used in the merge on mt-bench. I think that doing MoE with models that have better performance or are fine-tuned for specific tasks can yield better results.

Merge config

mergekit_config.yml

base_model: ./Qwen1.5-7B-Chat
gate_mode: random
dtype: bfloat16
experts:
  - source_model: ./Qwen1.5-7B-Chat
    positive_prompts: []
  - source_model: ./Liberated-Qwen1.5-7B
    positive_prompts: []
tokenizer_source: model:./Qwen1.5-7B-Chat

Gratitude

• Huge thanks to Alibaba Cloud Qwen for training and publishing the weights of Qwen model
• Thank you to abacusai for publishing fine-tuned model from Qwen
• And huge thanks to mlabonne, as I customized modeling file using phixtral as a reference