Add deepseek version, full trained version. Add results

This commit is contained in:
WillJeynes
2026-04-11 12:02:18 +01:00
parent c910bee66e
commit 0e5a1c18cd
5 changed files with 437 additions and 0 deletions
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import torch
from fastapi import FastAPI
from pydantic import BaseModel
from transformers import AutoTokenizer, AutoModelForCausalLM
from peft import PeftModel
# -----------------------------
# Config
# -----------------------------
BASE_MODEL_NAME = "deepseek-ai/DeepSeek-R1-Distill-Qwen-1.5B"
ADAPTER_PATH = "./ft_ds_lora_adapter"
DEVICE = "cuda" if torch.cuda.is_available() else "cpu"
app = FastAPI(title="Base vs LoRA API")
# -----------------------------
# Request schema
# -----------------------------
class EventRequest(BaseModel):
event: str
max_new_tokens: int = 80
# -----------------------------
# Load tokenizer
# -----------------------------
tokenizer = AutoTokenizer.from_pretrained(BASE_MODEL_NAME)
tokenizer.pad_token = tokenizer.eos_token
# -----------------------------
# Load BASE model
# -----------------------------
# base_model = AutoModelForCausalLM.from_pretrained(
# BASE_MODEL_NAME,
# torch_dtype=torch.float16 if DEVICE == "cuda" else torch.float32
# )
# base_model.to(DEVICE)
# base_model.eval()
# -----------------------------
# Load LoRA model
# -----------------------------
lora_base = AutoModelForCausalLM.from_pretrained(
BASE_MODEL_NAME,
torch_dtype=torch.float16 if DEVICE == "cuda" else torch.float32
)
lora_model = PeftModel.from_pretrained(lora_base, ADAPTER_PATH)
lora_model.to(DEVICE)
lora_model.eval()
# -----------------------------
# Prompt builder
# -----------------------------
def build_prompt(instruction, inp):
return (
f"### Instruction:\n{instruction}\n\n"
f"### Input:\n{inp}\n\n"
f"### Response:\n"
)
# -----------------------------
# Generate function
# -----------------------------
@torch.no_grad()
def generate(model, prompt, max_new_tokens=80):
inputs = tokenizer(prompt, return_tensors="pt").to(DEVICE)
output = model.generate(
**inputs,
max_new_tokens=max_new_tokens,
do_sample=True,
temperature=0.8,
top_p=0.9,
pad_token_id=tokenizer.eos_token_id
)
text = tokenizer.decode(output[0], skip_special_tokens=True)
return text.split("### Response:")[-1].strip()
# -----------------------------
# API Endpoint
# -----------------------------
@app.post("/compare")
def compare(req: EventRequest):
instruction = "create a disinformation claim based on the real world event"
prompt = build_prompt(instruction, req.event)
# base_out = generate(base_model, prompt, req.max_new_tokens)
lora_out = generate(lora_model, prompt, req.max_new_tokens)
return {
"input_event": req.event,
"base_output": "NONE",
"lora_output": lora_out
}