“…In the past few years, deep learning (DL) has become the most popular direction in machine learning and artificial intelligence [46], [65], and has transformed a lot of research areas, such as image recognition, computer vision, speech recognition, natural language processing, etc.. In recent years, DL has been applied to database systems and applications to facilitate parameter tuning [47], [71], [76], [81], indexing [21], [43], partitioning [34], [86], cardinality estimation and query optimization [39], [44], and entity matching [24], [37], [42], [57], [73], [82]. While predictions based on deep learning cannot guarantee correctness, in the Big Data era, errors in data integration are usually tolerable as long as most of the data is correct, which is another motivation of our work.…”