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Model: kakashi3lite/soulbox-cbt-therapy-0.5b Source: Original Platform
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README.md
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---
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license: apache-2.0
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language:
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- hi
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- mr
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- te
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library_name: transformers
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tags:
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- pytorch
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- transformers
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- mlx
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- qwen
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- qwen2.5
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- cbt
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- cognitive-behavioral-therapy
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- therapy
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- mental-health
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- multilingual
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- hindi
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- marathi
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- telugu
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- low-resource
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- edge-deployment
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- llama.cpp
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- gguf
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- dora
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- self-consistency
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- guardrail
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- text-generation
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pipeline_tag: text-generation
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base_model: Qwen/Qwen2.5-0.5B-Instruct
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datasets:
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- kakashi3lite/soulbox-cbt-therapy-dataset
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model-index:
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- name: SoulBox CBT Therapy Assistant 0.5B (ultra-light tier)
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results:
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- task:
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type: text-generation
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name: Text Generation
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metrics:
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- type: perplexity
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name: Test-set Perplexity
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value: 1.4129
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---
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# SoulBox CBT Therapy Assistant 0.5B (ultra-light tier)
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Fine-tuned Qwen2.5-0.5B-Instruct with DoRA on multilingual CBT synthetic data (Hindi/Marathi/Telugu). Optimized for the tightest memory edge targets (Q4_K_M GGUF ~400MB). Quality is below the 1.5B flagship.
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## Intended use
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Multilingual (Hindi / Marathi / Telugu) CBT-style conversational support for
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**low-resource edge deployment** (e.g. Orange Pi Zero 3, ~400 MB Q4_K_M GGUF,
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or in-browser via WebLLM). Designed as a warm, practical, non-judgmental CBT
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companion using structured techniques (thought records, cognitive distortions,
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behavioral activation, Socratic questioning, coping skills). **NOT a medical
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device** — it does not diagnose, treat, or replace professional care.
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## Safety (IMPORTANT)
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This model MUST be deployed behind the SoulBox guardrail layer
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(`guardrails/` + `scripts/inference.py`): crisis / medical / harmful inputs are
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blocked **before** the model (recall 1.0 / FPR 0.0 in the shipped e2e test), and
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outputs are validated **after** (script purity incl. U+FFFD / foreign-script
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glyphs, English leak, repetition, prescriptive-output filter). Production
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inference runs a **self-correcting loop** — regenerate on failure, reject
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cross-turn echoes. See kakashi3lite/SoulBoxFT/docs/GUARDRAIL.md for the threat model. The model
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itself is a language model, not a safety system — never expose it without the
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guardrail.
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## Training
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| Stage | Method | Data | Notes |
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|-------|--------|------|-------|
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| 1 (SFT) | DoRA (weight-decomposed LoRA) | 270 gated rows + 30 3-turn conversations | 400 steps, bf16 MPS, chunked fp32 CE |
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- **Base**: Qwen/Qwen2.5-0.5B-Instruct (Apache 2.0)
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- **Teacher** (data only): mlx-community/Qwen2.5-7B-Instruct-4bit
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- **Hardware**: Apple Silicon (MPS), 24 GB unified memory
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- DPO was evaluated and **dropped** (did not learn from near-identical
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self-consistency pairs) — this is an SFT-only release, honestly documented.
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## Data
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Synthetic CBT conversations distilled from a 7B MLX teacher with **best-of-K
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self-consistency selection** (K=3) and a 6-gate validator: script purity
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(U+FFFD / foreign-script hard-reject), language identity, trigram loops,
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echolalia, English leak, length. Every prompt is generated in English, native,
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and romanized input variants. Final dataset: **0 contamination / 0 loops /
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0 leak** across 270 single-turn + 30 multi-turn rows. See kakashi3lite/soulbox-cbt-therapy-dataset.
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## Evaluation summary (honest, contamination-aware)
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{
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"test_perplexity": 1.4129,
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"gguf_generation": 21,
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"gguf_generation_n": 21,
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"stress": {
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"overall": {
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"n": 24,
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"n_pass": 13,
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"pass_rate": 0.5417
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},
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"categories": {
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"novel": {
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"n": 9,
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"pass": 8,
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"pass_rate": 0.8889
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},
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"code_switch": {
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"n": 4,
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"pass": 3,
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"pass_rate": 0.75
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},
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"crisis": {
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"n": 5,
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"pass": 0,
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"pass_rate": 0.0
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},
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"medical": {
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"n": 3,
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"pass": 1,
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"pass_rate": 0.3333
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},
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"harmful": {
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"n": 2,
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"pass": 0,
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"pass_rate": 0.0
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},
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"multiturn": {
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"n": 1,
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"pass": 1,
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"pass_rate": 1.0
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}
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}
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},
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"guardrail": {
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"hard_positive_recall": null,
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"false_positive_rate": null,
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"output_filter": null,
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"e2e_blocked": 10,
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"e2e_passed": 14
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},
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"session": {
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"pass_rate": 1.0,
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"guarded_rate": 1.0,
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"n_sessions": 3
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}
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}
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## Usage (transformers)
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```python
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from transformers import AutoModelForCausalLM, AutoTokenizer
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model = AutoModelForCausalLM.from_pretrained("kakashi3lite/soulbox-cbt-therapy-0.5b")
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tokenizer = AutoTokenizer.from_pretrained("kakashi3lite/soulbox-cbt-therapy-0.5b")
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messages = [
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{"role": "system", "content": "You are a CBT therapist assistant. Respond ONLY in Hindi. Be warm, practical, non-judgmental. Do not mention that you are an AI. Avoid medical claims. Keep it concise but helpful."},
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{"role": "user", "content": "मैं काम पर एक छोटी गलती के बाद खुद को असफल मान रहा हूँ।"},
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]
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inputs = tokenizer.apply_chat_template(messages, add_generation_prompt=True, return_tensors="pt")
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out = model.generate(**inputs, max_new_tokens=180, do_sample=True, temperature=0.4)
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print(tokenizer.decode(out[0][inputs.shape[1]:], skip_special_tokens=True))
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```
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> ⚠️ Deploy behind the guardrail (see Safety above).
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## Usage (llama.cpp / GGUF)
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```bash
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llama-cli -m soulbox_therapy_v2.q4_k_m.gguf -p "..." -n 180 -t 8 --temp 0.4 --top-p 0.9 --repeat-penalty 1.08 --repeat-last-n 64
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```
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## Files
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- `model.safetensors` — merged weights (SafeTensors)
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- `soulbox_therapy_v2.q4_k_m.gguf` — **deployable** quantized artifact (~400 MB)
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## Limitations
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- Synthetic data only; not clinically validated.
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- Telugu is the weakest language; mixed-script borrowings can appear.
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- Small-model capacity — best for narrow, structured CBT tasks; multi-turn
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quality is guarded (3/3 sessions) but not human-level.
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## License
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Apache 2.0 (base model and fine-tune weights).
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chat_template.jinja
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{%- if tools %}
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{{- '<|im_start|>system\n' }}
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{%- if messages[0]['role'] == 'system' %}
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{{- messages[0]['content'] }}
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{%- else %}
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{{- 'You are Qwen, created by Alibaba Cloud. You are a helpful assistant.' }}
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{%- endif %}
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{{- "\n\n# 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>" }}
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{%- for tool in tools %}
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{{- "\n" }}
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{{- tool | tojson }}
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{%- endfor %}
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{{- "\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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{%- else %}
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{%- if messages[0]['role'] == 'system' %}
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{{- '<|im_start|>system\n' + messages[0]['content'] + '<|im_end|>\n' }}
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{%- else %}
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{{- '<|im_start|>system\nYou are Qwen, created by Alibaba Cloud. You are a helpful assistant.<|im_end|>\n' }}
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{%- endif %}
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{%- endif %}
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{%- for message in messages %}
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{%- if (message.role == "user") or (message.role == "system" and not loop.first) or (message.role == "assistant" and not message.tool_calls) %}
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{{- '<|im_start|>' + message.role + '\n' + message.content + '<|im_end|>' + '\n' }}
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{%- elif message.role == "assistant" %}
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{{- '<|im_start|>' + message.role }}
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{%- if message.content %}
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{{- '\n' + message.content }}
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{%- endif %}
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{%- for tool_call in message.tool_calls %}
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{%- if tool_call.function is defined %}
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{%- set tool_call = tool_call.function %}
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{%- endif %}
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{{- '\n<tool_call>\n{"name": "' }}
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{{- tool_call.name }}
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{{- '", "arguments": ' }}
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{{- tool_call.arguments | tojson }}
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{{- '}\n</tool_call>' }}
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{%- endfor %}
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{{- '<|im_end|>\n' }}
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{%- elif message.role == "tool" %}
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{%- if (loop.index0 == 0) or (messages[loop.index0 - 1].role != "tool") %}
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{{- '<|im_start|>user' }}
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{%- endif %}
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{{- '\n<tool_response>\n' }}
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{{- message.content }}
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{{- '\n</tool_response>' }}
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{%- if loop.last or (messages[loop.index0 + 1].role != "tool") %}
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{{- '<|im_end|>\n' }}
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{%- endif %}
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{%- endif %}
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{%- endfor %}
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{%- if add_generation_prompt %}
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{{- '<|im_start|>assistant\n' }}
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{%- endif %}
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config.json
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config.json
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{
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"architectures": [
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"Qwen2ForCausalLM"
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],
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"attention_dropout": 0.0,
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"bos_token_id": 151643,
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"dtype": "float16",
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"eos_token_id": 151645,
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"hidden_act": "silu",
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"hidden_size": 896,
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"initializer_range": 0.02,
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"intermediate_size": 4864,
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"layer_types": [
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"full_attention",
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"full_attention",
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"full_attention",
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"full_attention",
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"full_attention",
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"full_attention",
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"full_attention",
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"full_attention",
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"full_attention",
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"full_attention",
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"full_attention",
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"full_attention",
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"full_attention",
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"full_attention",
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"full_attention",
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"full_attention",
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"full_attention",
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"full_attention",
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"full_attention",
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"full_attention",
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"full_attention",
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"full_attention",
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"full_attention",
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"full_attention"
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],
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"max_position_embeddings": 32768,
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"max_window_layers": 21,
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"model_type": "qwen2",
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"num_attention_heads": 14,
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"num_hidden_layers": 24,
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"num_key_value_heads": 2,
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"pad_token_id": null,
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"rms_norm_eps": 1e-06,
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"rope_parameters": {
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"rope_theta": 1000000.0,
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"rope_type": "default"
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},
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"sliding_window": null,
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"tie_word_embeddings": true,
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"transformers_version": "5.9.0",
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"use_cache": true,
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"use_sliding_window": false,
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"vocab_size": 151936
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}
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14
generation_config.json
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{
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"bos_token_id": 151643,
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|
"do_sample": true,
|
||||||
|
"eos_token_id": [
|
||||||
|
151645,
|
||||||
|
151643
|
||||||
|
],
|
||||||
|
"pad_token_id": 151643,
|
||||||
|
"repetition_penalty": 1.1,
|
||||||
|
"temperature": 0.7,
|
||||||
|
"top_k": 20,
|
||||||
|
"top_p": 0.8,
|
||||||
|
"transformers_version": "5.9.0"
|
||||||
|
}
|
||||||
3
model.safetensors
Normal file
3
model.safetensors
Normal file
@@ -0,0 +1,3 @@
|
|||||||
|
version https://git-lfs.github.com/spec/v1
|
||||||
|
oid sha256:ad41ef521325ed689aee89e0f14d7428820afb764b26167c0ce8e692b4aec442
|
||||||
|
size 988097536
|
||||||
3
soulbox_therapy_v2.q4_k_m.gguf
Normal file
3
soulbox_therapy_v2.q4_k_m.gguf
Normal file
@@ -0,0 +1,3 @@
|
|||||||
|
version https://git-lfs.github.com/spec/v1
|
||||||
|
oid sha256:9f3b056ca28d1fb5cfb0f8cb2fd8c2413dd39304c9e772f4dc4c62414491ee7e
|
||||||
|
size 397807392
|
||||||
3
tokenizer.json
Normal file
3
tokenizer.json
Normal file
@@ -0,0 +1,3 @@
|
|||||||
|
version https://git-lfs.github.com/spec/v1
|
||||||
|
oid sha256:3fd169731d2cbde95e10bf356d66d5997fd885dd8dbb6fb4684da3f23b2585d8
|
||||||
|
size 11421892
|
||||||
30
tokenizer_config.json
Normal file
30
tokenizer_config.json
Normal file
@@ -0,0 +1,30 @@
|
|||||||
|
{
|
||||||
|
"add_prefix_space": false,
|
||||||
|
"backend": "tokenizers",
|
||||||
|
"bos_token": null,
|
||||||
|
"clean_up_tokenization_spaces": false,
|
||||||
|
"eos_token": "<|im_end|>",
|
||||||
|
"errors": "replace",
|
||||||
|
"extra_special_tokens": [
|
||||||
|
"<|im_start|>",
|
||||||
|
"<|im_end|>",
|
||||||
|
"<|object_ref_start|>",
|
||||||
|
"<|object_ref_end|>",
|
||||||
|
"<|box_start|>",
|
||||||
|
"<|box_end|>",
|
||||||
|
"<|quad_start|>",
|
||||||
|
"<|quad_end|>",
|
||||||
|
"<|vision_start|>",
|
||||||
|
"<|vision_end|>",
|
||||||
|
"<|vision_pad|>",
|
||||||
|
"<|image_pad|>",
|
||||||
|
"<|video_pad|>"
|
||||||
|
],
|
||||||
|
"is_local": false,
|
||||||
|
"local_files_only": true,
|
||||||
|
"model_max_length": 131072,
|
||||||
|
"pad_token": "<|endoftext|>",
|
||||||
|
"split_special_tokens": false,
|
||||||
|
"tokenizer_class": "Qwen2Tokenizer",
|
||||||
|
"unk_token": null
|
||||||
|
}
|
||||||
Reference in New Issue
Block a user