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Model: flavianv/deepoutfit-qwen17b-sft-dpo
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---
license: apache-2.0
base_model: Qwen/Qwen3-1.7B
library_name: transformers
pipeline_tag: text-generation
tags:
- qwen3
- text-generation
- tool-use
- recommendation
- fashion
- sft
- dpo
language:
- en
---
# DeepOutfit Qwen1.7B SFT+DPO
This is an experimental full-weight fine-tune of
[`Qwen/Qwen3-1.7B`](https://huggingface.co/Qwen/Qwen3-1.7B) for JSON-action
outfit recommendation traces. It is intended for research on catalog-grounded
fashion/outfit agents that search a product catalog, select five products, and
produce a structured final outfit report.
The model is not a general-purpose shopping assistant by itself. The expected
deployment path is an external tool loop with product-search results and a
validator/scorer around the final JSON report.
## Training
Base model:
- `Qwen/Qwen3-1.7B`
Supervised fine-tuning stage:
- Data: filtered JSON-action outfit rollouts.
- Selection rule used by the local pipeline: score four rollouts per outfit
query, select the top rollout per query when its score is greater than 60,
then export selected raw traces for SFT.
- Max length: 16,384.
- Epochs: 3.
- Learning rate: `2e-5`.
- Per-device train batch size: 1.
- Gradient accumulation steps: 16.
- Assistant-only loss: enabled.
- Full fine-tune, not LoRA.
DPO stage:
- Starting checkpoint: the outfit SFT model.
- Data: `100` outfit preference-query training rows and `50` validation rows
in the local DeepOutfit pipeline.
- Max length: 8,192.
- Epochs: 1.
- Learning rate: `5e-7`.
- DPO beta: `0.1`.
- Per-device train batch size: 1.
- Gradient accumulation steps: 8.
- Full fine-tune, not LoRA.
Uploaded source directory:
`outputs/models/qwen3-1.7b-json-action-outfit-sft-dpo-100q-cont1_20260527_230029`
## Evaluation
Evaluation was run with the local `batch_eval_outfit_models.py` harness on
50 OUTFIT500 queries, one low-temperature rollout per query. Outfit quality was
scored by GPT-4.1 judge. The comparison included Qwen zero-shot, this SFT+DPO
checkpoint, and a later GRPO/RL checkpoint.
| Model | Rows | Overall | Generalization | Entropy | Efficiency | Correctness | Quality | >=70 Quality | Missing Report | Broken Report | Tokens Median | Calls Median | Rollouts/min |
|---|---:|---:|---:|---:|---:|---:|---:|---:|---:|---:|---:|---:|---:|
| Qwen3-1.7B zero-shot | 50 | 57.03 | 100 | 0.0416 | 69.38 | 84.8 | 29.93 | 0% | 2% | 22% | 3,632 | 1 | 10.72 |
| DeepOutfit SFT+DPO | 50 | 55.36 | 90 | 0.0650 | 39.71 | 82.0 | 41.58 | 8% | 0% | 30% | 11,240 | 5 | 8.21 |
| DeepOutfit GRPO/RL checkpoint | 50 | 56.69 | 90 | 0.0641 | 40.79 | 88.4 | 39.10 | 6% | 2% | 16% | 11,280 | 5 | 7.05 |
Judge breakdown for this SFT+DPO checkpoint:
| Metric | Value |
|---|---:|
| Judged rows | 50 |
| Judge score > 70 | 4 / 50 |
| Mean judge score | 41.58 |
| Max judge score | 94.27 |
| Min judge score | 21.60 |
| Best average judge submetric | validity gate, 94.0 / 100 |
| Worst average judge submetric | explanation average, 40.8 / 100 |
| Highest failure flag | impractical to wear, 88% |
Generalization probes:
| Probe | Result |
|---|---:|
| Easy math | 8 / 10 |
| JSON formatting | 2 / 2 |
| Factual QA | 2 / 2 |
| Exact string following | 2 / 2 |
| Simple code-output QA | 2 / 2 |
Interpretation: compared with zero-shot Qwen3-1.7B, this checkpoint improves
GPT-4.1 judged outfit quality, but uses more search/tool calls and more tokens.
The dominant remaining failure mode is outfit practicality.
## Usage
```python
from transformers import AutoModelForCausalLM, AutoTokenizer
repo_id = "flavianv/deepoutfit-qwen17b-sft-dpo"
tokenizer = AutoTokenizer.from_pretrained(repo_id)
model = AutoModelForCausalLM.from_pretrained(
repo_id,
torch_dtype="auto",
device_map="auto",
)
messages = [
{
"role": "user",
"content": "Find a men's backyard BBQ host outfit that is casual, practical, and intentional.",
}
]
text = tokenizer.apply_chat_template(
messages,
tokenize=False,
add_generation_prompt=True,
)
inputs = tokenizer(text, return_tensors="pt").to(model.device)
outputs = model.generate(**inputs, max_new_tokens=1024, temperature=0.2, top_p=0.9)
print(tokenizer.decode(outputs[0], skip_special_tokens=True))
```
For the intended JSON-action setting, use the same tool schema and validation
loop as the training/evaluation harness. Standalone generations may reference
products or tool actions that are only meaningful when connected to the product
search tool.
## Limitations
- Experimental research checkpoint, not production validated.
- Optimized for outfit/product-report behavior, not broad assistant quality.
- Can produce incomplete, impractical, or unsupported product combinations.
- Product IDs and search behavior depend on the external catalog/tool harness.
- Easy-math probing shows some drift versus the zero-shot base model.
## License
This checkpoint is released under Apache 2.0, matching the base
`Qwen/Qwen3-1.7B` license metadata.

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{# {% generation %} {% endgeneration %} #}
{%- if tools %}
{{- '<|im_start|>system\n' }}
{%- if messages[0].role == 'system' %}
{{- messages[0].content + '\n\n' }}
{%- endif %}
{{- "# Tools\n\nYou may call one or more functions to assist with the user query.\n\nYou are provided with function signatures within <tools></tools> XML tags:\n<tools>" }}
{%- for tool in tools %}
{{- "\n" }}
{{- tool | tojson }}
{%- endfor %}
{{- "\n</tools>\n\nFor each function call, return a json object with function name and arguments within <tool_call></tool_call> XML tags:\n<tool_call>\n{\"name\": <function-name>, \"arguments\": <args-json-object>}\n</tool_call><|im_end|>\n" }}
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{{- '<|im_start|>system\n' + messages[0].content + '<|im_end|>\n' }}
{%- endif %}
{%- endif %}
{%- set ns = namespace(multi_step_tool=true, last_query_index=messages|length - 1) %}
{%- for message in messages[::-1] %}
{%- set index = (messages|length - 1) - loop.index0 %}
{%- if ns.multi_step_tool and message.role == "user" and message.content is string and not(message.content.startswith('<tool_response>') and message.content.endswith('</tool_response>')) %}
{%- set ns.multi_step_tool = false %}
{%- set ns.last_query_index = index %}
{%- endif %}
{%- endfor %}
{%- for message in messages %}
{%- if message.content is string %}
{%- set content = message.content %}
{%- else %}
{%- set content = '' %}
{%- endif %}
{%- if (message.role == "user") or (message.role == "system" and not loop.first) %}
{{- '<|im_start|>' + message.role + '\n' + content + '<|im_end|>' + '\n' }}
{%- elif message.role == "assistant" %}
{%- set reasoning_content = '' %}
{%- if message.reasoning_content is string %}
{%- set reasoning_content = message.reasoning_content %}
{%- else %}
{%- if '</think>' in content %}
{%- set reasoning_content = content.split('</think>')[0].rstrip('\n').split('<think>')[-1].lstrip('\n') %}
{%- set content = content.split('</think>')[-1].lstrip('\n') %}
{%- endif %}
{%- endif %}
{{- '<|im_start|>' + message.role + '\n' }}
{%- generation %}
{%- if loop.index0 > ns.last_query_index %}
{%- if loop.last or (not loop.last and reasoning_content) %}
{{- '<think>\n' + reasoning_content.strip('\n') + '\n</think>\n\n' + content.lstrip('\n') }}
{%- else %}
{{- content }}
{%- endif %}
{%- else %}
{{- content }}
{%- endif %}
{%- if message.tool_calls %}
{%- for tool_call in message.tool_calls %}
{%- if (loop.first and content) or (not loop.first) %}
{{- '\n' }}
{%- endif %}
{%- if tool_call.function %}
{%- set tool_call = tool_call.function %}
{%- endif %}
{{- '<tool_call>\n{"name": "' }}
{{- tool_call.name }}
{{- '", "arguments": ' }}
{%- if tool_call.arguments is string %}
{{- tool_call.arguments }}
{%- else %}
{{- tool_call.arguments | tojson }}
{%- endif %}
{{- '}\n</tool_call>' }}
{%- endfor %}
{%- endif %}
{{- '<|im_end|>\n' }}
{%- endgeneration %}
{%- elif message.role == "tool" %}
{%- if loop.first or (messages[loop.index0 - 1].role != "tool") %}
{{- '<|im_start|>user' }}
{%- endif %}
{{- '\n<tool_response>\n' }}
{{- content }}
{{- '\n</tool_response>' }}
{%- if loop.last or (messages[loop.index0 + 1].role != "tool") %}
{{- '<|im_end|>\n' }}
{%- endif %}
{%- endif %}
{%- endfor %}
{%- if add_generation_prompt %}
{{- '<|im_start|>assistant\n' }}
{%- if enable_thinking is defined and enable_thinking is false %}
{{- '<think>\n\n</think>\n\n' }}
{%- endif %}
{%- endif %}

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