期刊名称：Journal of Theoretical and Applied Information Technology
印刷版ISSN：1992-8645
电子版ISSN：1817-3195
出版年度：2018
卷号：96
期号：6
出版社：Journal of Theoretical and Applied
摘要：Natural language processing (NLP) has been considered as one of the important area in Artificial Intelligence. However, the progress made in natural language processing is quite slow, compared to other areas. The aim of this study is to conduct a systematic literature review for identifying the most prominent applications, techniques and challenging issues in NLP applications. To conduct this review, I had screened 587 retrieved papers from major databases such as SCOPUS and IEEE Explore, and also from Google search engine. In searching relevant papers search keywords such as "natural language processing, NLP applications, and complexity of NLP applications" had been used. However, to focus to the scope of the study 503 papers were excluded. Only the most prominent NLP applications namely information extraction, question answering system and automated text summarization were chosen to be reviewed. It is obvious that the challenging issue in NLP is the complexity of the natural language itself, which is the ambiguity problems that occur in various level of the language. This paper also aims at addressing ambiguity problems which occur at lexical and structural levels and significance techniques or approaches for solving the problems. Finally, the paper briefly discuss the future of NLP.
关键词：Natural language processing; NLP applications; Ambiguity in NLP
