Introduction

摘要

It is our great pleasure to welcome you to the Fourth Workshop on e-Commerce and NLP (ECNLP). This workshop focuses on intersection of Natural Language Processing (NLP) and e-Commerce. NLP and information retrieval (IR) have been powering e-Commerce applications since the early days of the fields. Today, NLP and IR already play a significant role in e-Commerce tasks, including product search, recommender systems, product question answering, machine translation, sentiment analysis, product description and review summarization, and customer review processing. With the exploding popularity of chatbots and shopping assistants - both text- and voice-based - NLP, IR, question answering, and dialogue systems research is poised to transform e-Commcrce once again. The ECNLP workshop series was designed to provide a venue for the dissemination of late-breaking research results and ideas related to e-commerce and online shopping, as well as a forum where new and unfinished ideas could be discussed. After three successful editions since 2019, we are happy to host ECNLP 4 at ACL 2021 and once again bring together researchers from both academia and industry.