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# -*- coding: utf-8 -*-
"""
@Author : Bao
@Date : 2020/8/12
@Desc :
@Last modified by : Bao
@Last modified date : 2020/8/20
"""
import os
import sys
import logging
import torch
import numpy as np
from tqdm import tqdm
import tensorflow as tf
import ujson as json
import argparse
import cjjpy as cjj
from itertools import repeat
from torch.utils.data import DataLoader, SequentialSampler
from transformers import (
BertConfig, BertTokenizer, AutoTokenizer,
RobertaConfig, RobertaTokenizer,
)
try:
from .modules.data_processor import DataProcessor
from .plm_checkers import BertChecker, RobertaChecker
from .utils import read_json_lines, compute_metrics
from .train import do_evaluate, set_seed
from ..eval_client.fever_scorer import FeverScorer
except:
sys.path.append(cjj.AbsParentDir(__file__, '.'))
sys.path.append(cjj.AbsParentDir(__file__, '..'))
from eval_client.fever_scorer import FeverScorer
from modules.data_processor import DataProcessor
from plm_checkers import BertChecker, RobertaChecker
from utils import read_json_lines, compute_metrics
from train import do_evaluate, set_seed
MODEL_MAPPING = {
'bert': (BertConfig, BertTokenizer, BertChecker),
'roberta': (RobertaConfig, RobertaTokenizer, RobertaChecker),
}
logger = logging.getLogger(__name__)
label2id = {"SUPPORTS": 2, "REFUTES": 0, 'NOT ENOUGH INFO': 1}
id2label = {v: k for k, v in label2id.items()}
class FactChecker:
def __init__(self, args, fc_ckpt_dir=None, mask_rate=0.):
self.data_processor = None
self.tokenizer = None
self.model = None
self.args = args
self.ckpt = args.fc_dir if fc_ckpt_dir is None else fc_ckpt_dir
self.mask_rate = mask_rate
logger.info('Initializing fact checker.')
self._prepare_ckpt(self.args.model_name_or_path, self.ckpt)
self.load_model()
def _prepare_ckpt(self, model_name_or_path, ckpt_dir):
tokenizer = AutoTokenizer.from_pretrained(model_name_or_path)
tokenizer.save_pretrained(ckpt_dir)
def load_model(self):
if self.model is None:
self.data_processor = DataProcessor(
self.args.model_name_or_path,
self.args.max_seq1_length,
self.args.max_seq2_length,
self.args.max_num_questions,
self.args.cand_k,
mask_rate=self.mask_rate
)
_, tokenizer_class, model_class = MODEL_MAPPING[self.args.model_type]
self.tokenizer = tokenizer_class.from_pretrained(
self.ckpt,
do_lower_case=self.args.do_lower_case
)
self.model = model_class.from_pretrained(
self.ckpt,
from_tf=bool(".ckpt" in self.ckpt),
logic_lambda=self.args.logic_lambda,
prior=self.args.prior,
)
self.model = torch.nn.DataParallel(self.model)
def _check(self, inputs: list, batch_size=32, verbose=True):
dataset = self.data_processor.convert_inputs_to_dataset(inputs, self.tokenizer, verbose=verbose)
sampler = SequentialSampler(dataset)
dataloader = DataLoader(dataset, sampler=sampler, batch_size=batch_size)
with torch.no_grad():
self.model.to(self.args.device)
self.model.eval()
iter = tqdm(dataloader, desc="Fact Checking") if verbose else dataloader
_, y_predicted, z_predicted, m_attn, mask = \
do_evaluate(iter, self.model, self.args, during_training=False, with_label=False)
return y_predicted, z_predicted, m_attn, mask
def check_from_file(self, in_filename, out_filename, batch_size, verbose=False):
if 'test' in in_filename:
raw_inp = f'{os.environ["PJ_HOME"]}/data/fever/shared_task_test.jsonl'
else:
raw_inp = None
tf.io.gfile.makedirs(os.path.dirname(out_filename))
inputs = list(read_json_lines(in_filename))
y_predicted, z_predicted, m_attn, mask = self._check(inputs, batch_size)
z_predicted = repeat(None) if z_predicted is None else z_predicted
m_attn = repeat(None) if m_attn is None else m_attn
ordered_results = {}
with_label = inputs[0].get('label') is not None
if with_label:
label_truth = [label2id[x['label']] for x in inputs]
_, acc_results = compute_metrics(label_truth, y_predicted, z_predicted, mask)
else:
acc_results = {}
for i, (inp, y, z, attn, _mask) in \
enumerate(zip(inputs, y_predicted, z_predicted, m_attn, mask)):
result = {'id': inp['id'],
'predicted_label': id2label[y],
'predicted_evidence': inp.get('predicted_evidence', [])}
if verbose:
if i < 5:
print("{}\t{}\t{}".format(inp.get("id", i), inp["claim"], y))
if z is not None and attn is not None:
result.update({
'z_prob': z[:torch.tensor(_mask).sum()],
'm_attn': attn[:torch.tensor(_mask).sum()],
})
ordered_results[inp['id']] = result
with tf.io.gfile.GFile(out_filename, 'w') as fout:
if raw_inp:
with tf.io.gfile.GFile(raw_inp) as f:
for line in f:
raw_js = json.loads(line)
fout.write(json.dumps(ordered_results[raw_js['id']]) + '\n')
else:
for k in ordered_results:
fout.write(json.dumps(ordered_results[k]) + '\n')
if ('dev' in in_filename or 'val' in in_filename) and with_label:
scorer = FeverScorer()
fever_results = scorer.get_scores(out_filename)
fever_results.update(acc_results)
print(fever_results)
return fever_results
def check_from_batch(self, inputs: list, verbose=False):
y_predicted, z_predicted, m_attn, mask = self._check(inputs, len(inputs), verbose)
return y_predicted, z_predicted, m_attn
if __name__ == '__main__':
parser = argparse.ArgumentParser()
parser.add_argument('--input', '-i', required=True, type=str,
choices=['val', 'eval', 'test', 'demo'])
parser.add_argument('--output', '-o', default='none', type=str)
parser.add_argument('--ckpt', '-c', required=True, type=str)
parser.add_argument('--model_type', default='roberta', type=str,
choices=['roberta', 'bert'])
parser.add_argument('--model_name_or_path', default='roberta-large', type=str)
parser.add_argument('--verbose', '-v', action='store_true', default=False,
help='whether output phrasal veracity or not')
parser.add_argument('--logic_lambda', '-l', required=True, type=float)
parser.add_argument('--prior', default='random', type=str, choices=['nli', 'uniform', 'logic', 'random'],
help='type of prior distribution')
parser.add_argument('--mask_rate', '-m', default=0., type=float)
parser.add_argument('--cand_k', '-k', default=3, type=int)
parser.add_argument('--max_seq1_length', default=256, type=int)
parser.add_argument('--max_seq2_length', default=128, type=int)
parser.add_argument('--max_num_questions', default=8, type=int)
parser.add_argument('--do_lower_case', action='store_true', default=False)
parser.add_argument('--batch_size', '-b', default=64, type=int)
parser.add_argument('--seed', default=42)
parser.add_argument('--n_gpu', default=4)
args = parser.parse_args()
set_seed(args)
args.device = torch.device("cuda" if torch.cuda.is_available() else "cpu")
if args.output == 'none':
args.ckpt = args.ckpt[:-1] if args.ckpt.endswith('/') else args.ckpt
base_name = os.path.basename(args.ckpt)
args.output = f'{os.environ["PJ_HOME"]}/results/fact_checking/AAAI22/{args.input}.{args.model_name_or_path}_m{args.mask_rate}_l{args.logic_lambda}_{base_name}_{args.prior}.predictions.jsonl'
assert args.output.endswith('predictions.jsonl'), \
f"{args.output} must end with predictions.jsonl"
args.input = f'{os.environ["PJ_HOME"]}/data/fact_checking/v5/{args.input}.json'
checker = FactChecker(args, args.ckpt, args.mask_rate)
fever_results = checker.check_from_file(args.input, args.output, args.batch_size, args.verbose)
cjj.lark(f"{args.output}: {fever_results}")
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