A Unified Model Using Distantly Supervised Data and Cross-Domain Data in NER

Figure 1

An example of the improved label strategy in partial learning method. The NER system tries to recognize brands and products in e-commerce data. The brown blocks are impossible tags. “B-Brand” means beginning of a brand, “I-Brand” means inside of a brand, “B-Product” means beginning of a product, “I-Product” means inside of a product, and “O” means outside of entity.