AuditFlow — LLaMA 3.1 8B DPO

Modèle fine-tuné par DPO (Direct Preference Optimization) sur un corpus de 3723 paires générées depuis une base RAG Qdrant (fragments ISA/IFRS/SYSCOHADA/NEP/juridique) et les feedbacks RLHF collectés par l'application AuditFlow.

Thèse DIC3 SSI — ESP UCAD Dakar — Khadidiatou GUEYE (2025-2026)

Architecture

  • Base : meta-llama/Llama-3.1-8B-Instruct
  • QLoRA 4-bit NF4 + double quantification
  • LoRA r=16, alpha=32, dropout=0.05
  • Couches : q_proj, v_proj, k_proj, o_proj, gate_proj, up_proj, down_proj
  • β DPO = 0.1 | LR = 5e-05 | Epochs = 2

Usage

from transformers import AutoTokenizer, AutoModelForCausalLM
from peft import PeftModel
import torch

base  = AutoModelForCausalLM.from_pretrained(
    'meta-llama/Llama-3.1-8B-Instruct', torch_dtype=torch.bfloat16, device_map='auto'
)
model = PeftModel.from_pretrained(base, 'khadimeli/auditflow-ohada-llama3-dpo')
tok   = AutoTokenizer.from_pretrained('khadimeli/auditflow-ohada-llama3-dpo')

messages = [
    {"role": "system", "content": "Tu es un expert en audit OHADA/Sénégal."},
    {"role": "user",   "content": "La loi de Benford est violée (chi²=7698). ISA 240 ??"},
]
ids = tok.apply_chat_template(messages, add_generation_prompt=True, return_tensors='pt')
out = model.generate(ids, max_new_tokens=300)
print(tok.decode(out[0][ids.shape[-1]:], skip_special_tokens=True))

Normes couvertes

ISA 200 · ISA 230 · ISA 240 · ISA 315 · ISA 320 · ISA 500 · ISA 570 · ISA 700/705/706 · IFRS 9 · IAS 36 · IFRS 16 · IAS 37 · SYSCOHADA Révisé 2018

Dataset

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