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from transformers import AutoTokenizer
import re
import torch
def model_fn(model_dir):
# Load Tokenizer, Model and Default template
tokenizer = AutoTokenizer.from_pretrained(model_dir)
model = torch.load(f"{model_dir}/torch_model.pt")
template = open(f"{model_dir}/default_template.txt","r").read()
return model, tokenizer, template
def predict_fn(data, load_list):
# Get model, tokenzier and template from the model_fn
model, tokenizer, template = load_list
# Parse the input request into correct format to generate model input
request_inputs = data.pop("inputs", data)
messages = request_inputs["messages"]
char_name = request_inputs["char_name"]
user_name = request_inputs["user_name"]
chats_curled = request_inputs["chats_curled"]
user_input = [
"{name}: {message}".format(
name = char_name if (id["role"] == "AI") else user_name,
message = id["message"].strip()
) for id in messages
]
# Tokenize the model input
while True:
prompt = template.format(char_name = char_name, user_name = user_name, user_input = "\n".join([user_input]))
input_ids = tokenizer(prompt + f"\n{char_name}:", return_tensors = "pt").to("cuda")
if input_ids.input_ids.size(1) > 2048:
chats_curled += 1
user_input = user_input[chats_curled*2:]
else: break
encoded_output = model.generate(
input_ids["input_ids"],
max_new_tokens = 50,
temperature = 0.5,
top_p = 0.9,
top_k = 0,
repetition_penalty = 1.1,
pad_token_id = 50256,
num_return_sequences = 1
)
decoded_output = tokenizer.decode(encoded_output[0], skip_special_tokens=True).replace(prompt,"")
# Parse the decoded output to the expected response
decoded_output = decoded_output.split(f"{char_name}:", 1)[1].split(f"{user_name}:",1)[0].strip()
parsed_result = re.sub('\*.*?\*', '', decoded_output).strip()
if len(parsed_result) != 0: decoded_output = parsed_result
decoded_output = " ".join(decoded_output.replace("*","").split())
try:
parsed_result = decoded_output[:[m.start() for m in re.finditer(r'[.!?]', decoded_output)][-1]+1]
if len(parsed_result) != 0: decoded_output = parsed_result
except Exception: pass
return {
"role": "AI",
"message": decoded_output,
"chats_curled": chats_curled
} |