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All Journal Jurnal Nasional Teknologi Informasi dan Aplikasinya
Palguna, I Made Surya Adi
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Computer Science & IT

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Analisis Sentimen Twitter Pengaruh Tokoh Politik dengan Menggunakan Metode K-Nearest Neighbor Palguna, I Made Surya Adi; Sanjaya ER, Ngurah Agus
Jurnal Nasional Teknologi Informasi dan Aplikasnya Vol 2 No 2 (2024): JNATIA Vol. 2, No. 2, Februari 2024
Publisher : Informatics Study Program, Faculty of Mathematics and Natural Sciences, Udayana University

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Abstract

Understanding public sentiment towards political figures is crucial for gauging their influence and impact. This study employs sentiment analysis to analyze Twitter data and assess the influence of political figures. Sentiment analysis, a computational exploration of expressed opinions, emotions, and sentience, allows insights into public perception on a large scale. This work leverages the K-Nearest Neighbor (KNN) algorithm, which classifies data based on its similarity to existing data points. Tweets undergo preprocessing, followed by TF-IDF weighting for keyword importance and cosine similarity calculations for comparing tweets to a labeled training dataset. By analyzing the nearest neighbors, sentiment values are assigned. The KNN model achieved an accuracy of 89%, a precision of 85%, and a recall of 88%, demonstrating its effectiveness in assessing sentiment and influence through Twitter data. This research contributes to the field of political communication by offering a robust method for analyzing public opinion and gauging the influence of political figures on social media platforms. Keywords: Sentiment Analysis, K-Nearest Neighbor, TF-IDF, Cosine Similarity
Co-Authors Ngurah Agus Sanjaya ER