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import json
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import os
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from time import time
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import ConfigSpace
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import pandas as pd
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import torch
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from ConfigSpace import Configuration
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from ConfigSpace.read_and_write import json as csj
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from pyjedai.clustering import UniqueMappingClustering
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from tqdm import tqdm
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from md_discovery.md_discover import md_discover
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from settings import *
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from pyjedai.datamodel import Data
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from pyjedai.block_cleaning import BlockPurging
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from pyjedai.block_cleaning import BlockFiltering
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from pyjedai.matching import EntityMatching
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from pyjedai.block_building import (
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StandardBlocking,
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QGramsBlocking,
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ExtendedQGramsBlocking,
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SuffixArraysBlocking,
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ExtendedSuffixArraysBlocking,
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)
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from pyjedai.comparison_cleaning import (
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WeightedEdgePruning,
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WeightedNodePruning,
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CardinalityEdgePruning,
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CardinalityNodePruning,
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BLAST,
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ReciprocalCardinalityNodePruning,
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ReciprocalWeightedNodePruning,
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ComparisonPropagation
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)
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from pyjedai.clustering import *
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def prepare_file_for_md_discovery(train: pd.DataFrame, t_single_tuple_path=er_output_dir + r"\t_single_tuple.csv"):
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# 挑选出实际匹配的元组对
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df = train[train['gold'] == '1']
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# 将左表id赋值给右表
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for index, row in df.iterrows():
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df.loc[index, "rtable_" + rtable_id] = row["ltable_" + ltable_id]
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train_columns = train.columns.values.tolist()
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l_columns = []
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r_columns = []
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cols = []
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# 左表和右表字段名分别加入两个列表
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for _ in train_columns:
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if _.startswith('ltable'):
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l_columns.append(_)
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elif _.startswith('rtable'):
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r_columns.append(_)
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# 将左表中字段名去掉前缀，作为统一的字段名列表(前提是两张表内对应字段名调整一致)
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for _ in l_columns:
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cols.append(_.replace('ltable_', ''))
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ldf = df[l_columns]
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rdf = df[r_columns]
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ldf.columns = cols
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rdf.columns = cols
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t_single_tuple = pd.concat([ldf, rdf])
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t_single_tuple = t_single_tuple.reset_index(drop=True)
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t_single_tuple.to_csv(t_single_tuple_path, sep=',', index=False, header=True, quoting=1)
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# 形成一个字典，key为字段名称，value为一维张量，记录了预测表中这一字段每行的左右属性的相似度
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def build_col_pairs_sim_tensor_dict(predictions: pd.DataFrame):
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predictions_attrs = predictions.columns.values.tolist()
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col_tuple_list = []
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for _ in predictions_attrs:
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if _.startswith('ltable'):
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left_index = predictions_attrs.index(_)
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right_index = predictions_attrs.index(_.replace('ltable_', 'rtable_'))
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col_tuple_list.append((left_index, right_index))
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df = predictions.drop(columns=['gold', 'predicted', 'confidence'], inplace=False)
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length = df.shape[0]
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width = df.shape[1]
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sentences = []
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for col in range(0, width):
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for row in range(0, length):
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cell_value = df.values[row, col]
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sentences.append(cell_value)
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if len(sentences) == 0:
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return {}
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embedding = model.encode(sentences, convert_to_tensor=True, device="cuda")
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split_embedding = torch.split(embedding, length, dim=0)
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table_tensor = torch.stack(split_embedding, dim=0, out=None)
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# prediction的归一化嵌入张量
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norm_table_tensor = torch.nn.functional.normalize(table_tensor, dim=2)
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sim_tensor_dict = {}
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for col_tuple in col_tuple_list:
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lattr_tensor = norm_table_tensor[col_tuple[0]]
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rattr_tensor = norm_table_tensor[col_tuple[1]]
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mul_tensor = lattr_tensor * rattr_tensor
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sim_tensor = torch.sum(mul_tensor, 1)
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sim_tensor = torch.round(sim_tensor, decimals=4)
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sim_tensor_dict[predictions_attrs[col_tuple[0]].replace('ltable_', '')] = sim_tensor
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return sim_tensor_dict
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def load_mds(paths: list) -> list:
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if len(paths) == 0:
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return []
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all_mds = []
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# 传入md路径列表
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for md_path in paths:
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if not os.path.exists(md_path):
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continue
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mds = []
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# 打开每一个md文件
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with open(md_path, 'r') as f_:
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# 读取每一行的md，加入该文件的md列表
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for line in f_.readlines():
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md_metadata = line.strip().split('\t')
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# todo 如果MD文件的形式改了 这里也要改
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md = eval(md_metadata[1])
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mds.append(md)
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all_mds.extend(mds)
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return all_mds
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def is_explicable(row, all_mds: list, st_dict):
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attrs = all_mds[0][0].keys() # 从第一条md_tuple中的md字典中读取所有字段
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for md_tuple in all_mds:
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explicable = True # 假设这条md能解释当前元组
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for a in attrs:
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if a != target_attr:
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if st_dict[a][row[0]].item() < md_tuple[0][a]:
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explicable = False # 任意一个字段的相似度达不到阈值，这条md就不能解释当前元组
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break # 不再与当前md的其他相似度阈值比较，跳转到下一条md
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if explicable:
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return md_tuple[2] # 任意一条md能解释，直接返回
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return -1.0 # 遍历结束，不能解释
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def er_process(config: Configuration):
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print(f'\033[33mConfig: {config}\033[0m')
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start = time()
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ltable = pd.read_csv(ltable_path, sep='|', engine='python', na_filter=False)
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rtable = pd.read_csv(rtable_path, sep='|', engine='python', na_filter=False)
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mapping = pd.read_csv(mapping_path, sep='|', engine='python')
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data = Data(dataset_1=ltable,
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id_column_name_1=ltable_id,
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dataset_2=rtable,
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id_column_name_2=rtable_id,
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ground_truth=mapping)
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# clean data(optional)
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data.clean_dataset(remove_stopwords=False,
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remove_punctuation=False,
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remove_numbers=False,
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remove_unicodes=False)
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# block building
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blocker_name = config["jed_blocker"]
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block_attribute = config["block_attr"]
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match blocker_name:
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case "Standard":
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blocker = StandardBlocking()
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case "QGrams":
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blocker = QGramsBlocking()
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case "ExtendedQG":
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blocker = ExtendedQGramsBlocking()
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case "SuffixArrays":
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blocker = SuffixArraysBlocking()
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case "ExtendedSA":
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blocker = ExtendedSuffixArraysBlocking()
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blocks = blocker.build_blocks(data, attributes_1=[block_attribute], attributes_2=[block_attribute])
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# block purging(optional)
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bp = BlockPurging()
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cleaned_blocks = bp.process(blocks, data, tqdm_disable=False)
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# block cleaning(optional)
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bf = BlockFiltering(ratio=0.8) # todo what is ratio for?
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filtered_blocks = bf.process(cleaned_blocks, data, tqdm_disable=False)
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# Comparison Cleaning - Meta Blocking(optional)
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pruning_method = config["meta_blocker"]
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weighting_scheme_name = config["weighting_scheme"]
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match pruning_method:
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case "WEP":
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meta_blocker = WeightedEdgePruning(weighting_scheme=weighting_scheme_name)
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case "WNP":
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meta_blocker = WeightedNodePruning(weighting_scheme=weighting_scheme_name)
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case "CEP":
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meta_blocker = CardinalityEdgePruning(weighting_scheme=weighting_scheme_name)
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case "CNP":
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meta_blocker = CardinalityNodePruning(weighting_scheme=weighting_scheme_name)
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case "BLAST":
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meta_blocker = BLAST(weighting_scheme=weighting_scheme_name)
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case "RCNP":
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meta_blocker = ReciprocalCardinalityNodePruning(weighting_scheme=weighting_scheme_name)
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case "RWNP":
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meta_blocker = ReciprocalWeightedNodePruning(weighting_scheme=weighting_scheme_name)
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case "CP":
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meta_blocker = ComparisonPropagation()
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candidate_pairs_blocks = meta_blocker.process(blocks=filtered_blocks, data=data, tqdm_disable=True)
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# entity matching
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em = EntityMatching(
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metric=config["matching_metric"],
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tokenizer=config["matching_tokenizer"],
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vectorizer=config["matching_vectorizer"],
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qgram=3,
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similarity_threshold=0.0
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)
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pairs_graph = em.predict(candidate_pairs_blocks, data, tqdm_disable=True)
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# draw(pairs_graph)
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# entity clustering
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clusteror_name = config["clusteror_name"]
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match clusteror_name:
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case "CCC":
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clusteror = ConnectedComponentsClustering()
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case "UMC":
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clusteror = UniqueMappingClustering()
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case "EC":
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clusteror = ExactClustering()
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case "CenterC":
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clusteror = CenterClustering()
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case "BMC":
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clusteror = BestMatchClustering()
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case "MCC":
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clusteror = MergeCenterClustering()
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case "CC":
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clusteror = CorrelationClustering()
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case "CTC":
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clusteror = CutClustering()
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case "MCL":
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clusteror = MarkovClustering()
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case "KMAC":
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clusteror = KiralyMSMApproximateClustering()
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case "RSRC":
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clusteror = RicochetSRClustering()
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# 得到预测结果与评估指标
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clusters = clusteror.process(pairs_graph, data, similarity_threshold=0.17)
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matches_dataframe = clusteror.export_to_df(clusters)
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matches_dataframe_path = er_output_dir + r'\matches_dataframe.csv'
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matches_dataframe.to_csv(matches_dataframe_path, sep=',', index=False, header=True, quoting=1)
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evaluation = clusteror.evaluate(clusters)
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# evaluation.pop('True Positives')
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# evaluation.pop('False Positives')
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# evaluation.pop('True Negatives')
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# evaluation.pop('False Negatives')
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ltable = ltable.astype(str)
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rtable = rtable.astype(str)
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mapping = mapping.astype(str)
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result_df = matches_dataframe.astype(str)
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lcolumns_dict = {}
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rcolumns_dict = {}
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ltable_attrs = ltable.columns.values.tolist()
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rtable_attrs = rtable.columns.values.tolist()
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for _ in ltable_attrs:
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lcolumns_dict[_] = 'ltable_' + _
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for _ in rtable_attrs:
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rcolumns_dict[_] = 'rtable_' + _
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result_lid_list = result_df['id1'].tolist()
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selected_ltable = ltable[ltable[ltable_id].isin(result_lid_list)]
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selected_ltable = selected_ltable.rename(columns=lcolumns_dict)
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selected_ltable['key'] = 1
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result_rid_list = result_df['id2'].tolist()
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selected_rtable = rtable[rtable[rtable_id].isin(result_rid_list)]
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selected_rtable = selected_rtable.rename(columns=rcolumns_dict)
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selected_rtable['key'] = 1
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predictions = pd.merge(selected_ltable, selected_rtable, on='key')
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predictions.drop(columns='key', inplace=True)
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predictions = predictions.reset_index(drop=True)
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predictions['gold'] = '0'
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predictions['predicted'] = '0'
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gold_match_rows = []
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predicted_match_rows = []
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for tuple_ in tqdm(predictions.itertuples()):
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lid = getattr(tuple_, 'ltable_' + ltable_id)
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map_row = mapping[mapping[mapping_lid] == lid]
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result_row = result_df[result_df['id1'] == lid]
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if map_row is not None:
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rid = map_row[mapping_rid]
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for value in rid:
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if value == getattr(tuple_, 'rtable_' + rtable_id):
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gold_match_rows.append(tuple_[0])
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if result_row is not None:
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rid = result_row['id2']
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for value in rid:
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if value == getattr(tuple_, 'rtable_' + rtable_id):
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predicted_match_rows.append(tuple_[0])
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for _ in gold_match_rows:
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predictions.loc[_, 'gold'] = '1'
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for _ in predicted_match_rows:
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predictions.loc[_, 'predicted'] = '1'
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# 挖MD 计算可解释性
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prepare_file_for_md_discovery(predictions)
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predictions['confidence'] = 0
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predicted_match = predictions[predictions['predicted'] == '1']
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predicted_match = predicted_match.reset_index(drop=True)
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sim_tensor_dict = build_col_pairs_sim_tensor_dict(predicted_match)
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md_discover(config, er_output_dir + r"\t_single_tuple.csv", md_output_dir + r"\mds.txt")
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md_paths = [md_output_dir + r'\mds.txt']
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md_list = load_mds(md_paths) # 从全局变量中读取所有的md
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epl_match = 0 # 可解释，预测match
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if sim_tensor_dict:
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if len(md_list) > 0:
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for row in tqdm(predicted_match.itertuples()):
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x = is_explicable(row, md_list, sim_tensor_dict)
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if x > 0:
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predicted_match.loc[row[0], 'confidence'] = x
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epl_match += 1
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interpretability = epl_match / len(predicted_match) # 可解释性
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evaluation['interpretability'] = interpretability
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else:
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interpretability = 0
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evaluation['interpretability'] = interpretability
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f1 = evaluation['F1 %'] / 100
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performance = interpre_weight * interpretability + (1 - interpre_weight) * f1
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evaluation['performance'] = performance
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print(f'\033[33mEvaluation: {evaluation}\033[0m')
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predicted_match.to_csv(er_output_dir + r'\predicted_match.csv', sep=',', index=False, header=True)
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################################################################################################################
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print(f'\033[33mTime consumed by ML-ER in seconds: {time() - start}\033[0m')
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return evaluation
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def ml_er(config: Configuration = None):
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indicators = er_process(config)
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output_path = er_output_dir + r"\eval_result.txt"
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with open(output_path, 'w') as f_:
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for key, value in indicators:
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f_.write(key + " : " + value)
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f_.write('\n')
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# if __name__ == '__main__':
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# if os.path.isfile(hpo_output_dir + r"\incumbent.json"):
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# with open(hpo_output_dir + r"\configspace.json", 'r') as f:
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# dict_configspace = json.load(f)
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# str_configspace = json.dumps(dict_configspace)
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# configspace = csj.read(str_configspace)
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# with open(hpo_output_dir + r"\incumbent.json", 'r') as f:
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# dic = json.load(f)
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# configuration = ConfigSpace.Configuration(configspace, values=dic)
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# ml_er(configuration)
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if __name__ == '__main__':
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with open(hpo_output_dir + r"\configspace.json", 'r') as f:
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dict_configspace = json.load(f)
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str_configspace = json.dumps(dict_configspace)
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configspace = csj.read(str_configspace)
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with open(hpo_output_dir + r"\fuck.json", 'r') as f:
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dic = json.load(f)
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configuration = ConfigSpace.Configuration(configspace, values=dic)
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ml_er(configuration)
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