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DOI: 10.14569/IJACSA.2018.091011
PDF

Normalization of Unstructured and Informal Text in Sentiment Analysis

Author 1: Muhammad Javed
Author 2: Shahid Kamal

International Journal of Advanced Computer Science and Applications(IJACSA), Volume 9 Issue 10, 2018.

  • Abstract and Keywords
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Abstract: Sentiment Analysis is problem of natural language processing which deals with the extraction and analysis of public sentiments shared about target entities over microbloging websites. This field has gained great attention due to the huge availability of decision making textual contents. Sentiment Analysis has enormous application areas such as; Market Analysis, Service Analysis, Showbiz analysis, Movies, sports and even the popularity and acceptance rate of political policies can also be predicted via sentiment analysis systems. Although tremendous volume of opinionative text is available but it is unstructured and noisy due to which sentiment classifiers can’t achieve good outcomes. Normalization is the process used to clean noise from unstructured text for sentiment analysis. In this study we have proposed a mechanism for the normalization of informal and unstructured text. Proposed mechanism is comprised of four essential phases; Noise Reduction, Part of Speech Tagging, Stop Word Removal stemming and Lemmatization. Numerous experiments are performed on twitter data set with unsupervised lexicons and dictionaries. Python and Natural language toolkit is used for performing all four essential steps. This study demonstrates that utilization and normalization of informal tokens in tweets improved the overall classification accuracy from 75.42 to 82.357.

Keywords: Informal; normalization; opinion mining; roman; sentiment analysis; text preprocessing

Muhammad Javed and Shahid Kamal, “Normalization of Unstructured and Informal Text in Sentiment Analysis” International Journal of Advanced Computer Science and Applications(IJACSA), 9(10), 2018. http://dx.doi.org/10.14569/IJACSA.2018.091011

@article{Javed2018,
title = {Normalization of Unstructured and Informal Text in Sentiment Analysis},
journal = {International Journal of Advanced Computer Science and Applications},
doi = {10.14569/IJACSA.2018.091011},
url = {http://dx.doi.org/10.14569/IJACSA.2018.091011},
year = {2018},
publisher = {The Science and Information Organization},
volume = {9},
number = {10},
author = {Muhammad Javed and Shahid Kamal}
}



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.

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