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import argparse
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from transformers import AutoTokenizer, AutoModelForCausalLM, StoppingCriteria
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import torch
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import os
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import json
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from tqdm import tqdm
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import shortuuid
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from llava.conversation import default_conversation
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from llava.utils import disable_torch_init
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class KeywordsStoppingCriteria(StoppingCriteria):
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def __init__(self, keywords, tokenizer, input_ids):
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self.keywords = keywords
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self.tokenizer = tokenizer
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self.start_len = None
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self.input_ids = input_ids
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def __call__(self, output_ids: torch.LongTensor, scores: torch.FloatTensor, **kwargs) -> bool:
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if self.start_len is None:
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self.start_len = self.input_ids.shape[1]
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else:
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outputs = self.tokenizer.batch_decode(output_ids[:, self.start_len:], skip_special_tokens=True)[0]
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for keyword in self.keywords:
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if keyword in outputs:
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return True
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return False
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@torch.inference_mode()
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def eval_model(model_name, questions_file, answers_file):
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disable_torch_init()
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model_name = os.path.expanduser(model_name)
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tokenizer = AutoTokenizer.from_pretrained(model_name, use_fast=False)
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model = AutoModelForCausalLM.from_pretrained(model_name,
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torch_dtype=torch.float16).cuda()
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ques_file = open(os.path.expanduser(questions_file), "r")
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ans_file = open(os.path.expanduser(answers_file), "w")
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for i, line in enumerate(tqdm(ques_file)):
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idx = json.loads(line)["question_id"]
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qs = json.loads(line)["text"]
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cat = json.loads(line)["category"]
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conv = default_conversation.copy()
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conv.append_message(conv.roles[0], qs)
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prompt = conv.get_prompt()
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inputs = tokenizer([prompt])
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input_ids = torch.as_tensor(inputs.input_ids).cuda()
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stopping_criteria = KeywordsStoppingCriteria([conv.sep], tokenizer, input_ids)
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output_ids = model.generate(
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input_ids,
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do_sample=True,
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use_cache=True,
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temperature=0.7,
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max_new_tokens=1024,
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stopping_criteria=[stopping_criteria])
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outputs = tokenizer.batch_decode(output_ids, skip_special_tokens=True)[0]
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try:
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index = outputs.index(conv.sep, len(prompt))
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except ValueError:
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outputs += conv.sep
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index = outputs.index(conv.sep, len(prompt))
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outputs = outputs[len(prompt) + len(conv.roles[1]) + 2:index].strip()
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ans_id = shortuuid.uuid()
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ans_file.write(json.dumps({"question_id": idx,
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"text": outputs,
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"answer_id": ans_id,
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"model_id": model_name,
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"metadata": {}}) + "\n")
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ans_file.flush()
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ans_file.close()
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if __name__ == "__main__":
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parser = argparse.ArgumentParser()
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parser.add_argument("--model-name", type=str, default="facebook/opt-350m")
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parser.add_argument("--question-file", type=str, default="tables/question.jsonl")
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parser.add_argument("--answers-file", type=str, default="answer.jsonl")
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args = parser.parse_args()
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eval_model(args.model_name, args.question_file, args.answers_file)
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