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Article Details

Copyright Statement: This is an open access article licensed under a Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, even commercially as long as the original work is properly cited.

Question Answering Systems: A Systematic Literature Review

Author 1: Sarah Saad Alanazi
Author 2: Nazar Elfadil
Author 3: Mutsam Jarajreh
Author 4: Saad Algarni

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Digital Object Identifier (DOI) : 10.14569/IJACSA.2021.0120359

Article Published in International Journal of Advanced Computer Science and Applications(IJACSA), Volume 12 Issue 3, 2021.

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Abstract: Question answering systems (QAS) are developed to answer questions presented in natural language by extracting the answer. The development of QAS is aimed at making the Web more suited to human use by eliminating the need to sift through a lot of search results manually to determine the correct answer to a question. Accordingly, the aim of this study was to provide an overview of the current state of QAS research. It also aimed at highlighting the key limitations and gaps in the existing body of knowledge relating to QAS. Furthermore, it intended to identify the most effective methods utilized in the design of QAS. The systematic review of literature research method was selected as the most appropriate methodology for studying the research topic. This method differs from the conventional literature review as it is more comprehensive and objective. Based on the findings, QAS is a highly active area of research, with scholars taking diverse approaches in the development of their systems. Some of the limitations observed in these studies encompass the focused nature of current QAS, weaknesses associated with models that are used as building blocks for QAS, the need for standard datasets and question formats hence limiting the applicability of the QAS in practical settings, and the failure of researchers to examine their QAS solutions comprehensively. The most effective methods for designing QAS include focusing on syntax and context, utilizing word encoding and knowledge systems, leveraging deep learning, and using elements such as machine learning and artificial intelligence. Going forward, modular designs ought to be encouraged to foster collaboration in the creation of QAS.

Keywords: Question answering systems; syntax; knowledge systems; deep learning; machine learning; systematic literature review; artificial intelligence

Sarah Saad Alanazi, Nazar Elfadil, Mutsam Jarajreh and Saad Algarni, “Question Answering Systems: A Systematic Literature Review” International Journal of Advanced Computer Science and Applications(IJACSA), 12(3), 2021. http://dx.doi.org/10.14569/IJACSA.2021.0120359

@article{Alanazi2021,
title = {Question Answering Systems: A Systematic Literature Review},
journal = {International Journal of Advanced Computer Science and Applications},
doi = {10.14569/IJACSA.2021.0120359},
url = {http://dx.doi.org/10.14569/IJACSA.2021.0120359},
year = {2021},
publisher = {The Science and Information Organization},
volume = {12},
number = {3},
author = {Sarah Saad Alanazi and Nazar Elfadil and Mutsam Jarajreh and Saad Algarni}
}


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