初始化项目，由ModelHub XC社区提供模型

Model: kcherry497/dyno-blast-4b
Source: Original Platform

README.md

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+---
+license: apache-2.0
+base_model: Qwen/Qwen3-4B
+library_name: transformers
+pipeline_tag: text-generation
+tags:
+- qwen3
+- qlora
+- rag
+- grounded-generation
+- citations
+- mining
+- blasting
+- safety-data-sheets
+---
+
+# dyno-blast-4b
+
+A QLoRA fine-tune of **Qwen3-4B** that answers blasting / explosives technical and
+safety questions **strictly from retrieved context**, attaches `[N]` + page
+citations to every claim, and **refuses when the answer isn't in the provided
+sources**.
+
+This is the *generation* half of a grounded RAG system over Dyno Nobel Australia's
+public technical literature (product technical data sheets, Safety Data Sheets,
+application guides, case studies). **Facts live in the retriever; the model learns
+the behavior** — cite, ground, refuse. Companion vector DB:
+[`kcherry497/dyno-blast-4b-rag`](https://huggingface.co/datasets/kcherry497/dyno-blast-4b-rag).
+
+## Intended use & limitations
+Retrieval-augmented Q&A for mining / quarry / blasting professionals. **Not a
+standalone knowledge source** — use with the retriever (intfloat/e5-base-v2 + a
+Qdrant collection). For SDS / safety content, always verify against the cited
+source PDF; the model is trained to give page numbers for exactly this reason.
+Domain-specific to Dyno Nobel AU products.
+
+## Training
+- **Base:** Qwen/Qwen3-4B
+- **Method:** QLoRA (4-bit nf4), r=16, α=32, dropout=0.05, targets all attn + MLP projections
+- **Data:** **1,674 synthetic grounded examples** — 1,656 `[N]`-cited answers + 18 refusal / safe-decline examples — generated by a teacher over retrieved context, covering SDS sections, technical specs, application/case-study/brochure topics, Explosive Engineers Guide articles, industrial chemicals, and blast calculators
+- **Schedule:** 3 epochs, lr 1e-4 cosine, full-sequence SFT
+- **Result:** final `train_loss` **0.97**
+
+Retrieval corpus (companion dataset repo): **3,819 chunks across 682 documents** —
+dynonobel.com.au + dynonobel.com (126 products) + the Explosive Engineers Guide app
+(4 regions) + Industrial Chemicals + resource-centre case studies/guides/brochures +
+blast calculators.
+
+## Files
+- `*.safetensors` — merged fp16 weights (load with `transformers`)
+- `dyno-blast-4b-q8_0.gguf` — q8_0 GGUF for llama.cpp / Ollama
+
+## Prompt format
+Grounded system prompt (answer only from numbered SOURCEs, cite `[N]`, refuse if
+absent) + numbered `SOURCE [N]` blocks from the retriever, then the question. The
+exact system prompt and chunk schema are in the companion dataset repo.