A Context-Aware and User Behavior-Based Recommender System with Regarding Social Network Analysis

Author(s):  
Mina Razghandi ◽  
Seyyed Alireza Hashemi Golpaygani
Compiler ◽  
2021 ◽  
Vol 10 (2) ◽  
pp. 99
Author(s):  
Muhammad Habibi ◽  
Puji Winar Cahyo

Social media analytics, especially Twitter, has experienced significant growth over the last few years. The data generated by Twitter provides valuable information to many stakeholders regarding user behavior, preferences, tastes, and characteristics. The presence of influencers on social media can invite interaction with other users. An influencer can affect the speed of spreading information on social media. This study looks at the influence of influencers and information dissemination channels on Twitter data related to COVID-19 vaccination in Indonesia as one of the hot Twitter discussion trends. This study applies Social Network Analysis (SNA) as a theoretical and methodological framework to show that interactions between users have differences on the network when the analyzed tweets are divided into mention and retweet networks. This study found that the key accounts in disseminating information related to Covid-19 vaccination were dominated by official accounts of government organizations and online news portals. The official Twitter account of government organizations turns out to have an essential role in disseminating information related to COVID-19 vaccination, namely the @KemenkesRI account belonging to the Ministry of Health of the Republic of Indonesia and the @Puspen_TNI account belonging to the TNI Information Center.


2021 ◽  
Vol 8 (6) ◽  
pp. 1309
Author(s):  
Diana Purwitasari ◽  
Apriantoni Apriantoni ◽  
Agus Budi Raharjo

<p class="Abstrak">Pandemi COVID-19 yang berlangsung lama telah berdampak masif pada berbagai aktivitas publik, misalnya perilaku pengguna di media sosial. <em>Twitter</em>, media sosial yang fleksibel untuk berdiskusi dan bertukar pendapat, menjadi salah satu media populer dalam menyebarluaskan informasi COVID-19 secara dinamis dan <em>up-to-date</em>. Hal ini menjadikan <em>twitter</em> relevan sebagai media ekstraksi pengetahuan dalam mengidentifikasi perubahan perilaku pengguna. Kontribusi penelitian ini adalah menemukan perubahan perilaku pengguna <em>twitter</em> melalui analisis profil pengguna pada periode sebelum dan setelah COVID-19. Data yang digunakan adalah data <em>tweet</em> berbahasa Indonesia. Penelitian ini menggunakan pendekatan <em>Social Network Analysis</em> (SNA) sebagai ekstraksi informasi dalam menentukan aktor utama dan aktor populer. Kemudian, profil pengguna aktif dianalisis untuk mengidentifikasi perubahan perilaku melalui intensitas <em>tweet</em>, popularitas pengguna, dan representasi topik pembahasan. Popularitas pengguna dianalisis dengan pendekatan <em>follower rank</em>, sedangkan representasi topik pembahasan diekstraksi dengan metode <em>Latent Dirichlet Allocation</em> untuk mendapatkan dominan topik yang dibahas oleh setiap pengguna aktif. Tujuannya adalah untuk mempermudah  identifikasi pengaruh pandemi COVID-19 terhadap perubahan perilaku pengguna <em>twitter</em>. Berdasarkan hasil SNA, penelitian ini menemukan tiga aktor  kunci yang aktif pada periode sebelum dan setelah COVID-19. Selanjutnya, hasil analisis dari ketiga aktor tersebut menunjukkan adanya pengaruh pandemi COVID-19 terhadap perubahan perilaku pengguna <em>twitter</em>, yaitu kenaikan intensitas <em>tweet</em> sebesar 58% pada jam kerja, aktor utama yang didominasi oleh 60% pengguna dengan <em>follower</em> rendah, dan topik pembicaraan pengguna twitter yang dominan membahas COVID-19, hobi dan aktivitas di dalam rumah.</p><p class="Abstrak"> </p><p class="Abstrak"><em><strong>Abstract</strong></em></p><p class="Abstrak"><em><strong><br /></strong>The long-lasting COVID-19 pandemic had a massive impact on public activities, such as user behavior on social media. Twitter, a flexible social media for discussing and exchanging opinions, has become popular in disseminating COVID-19  dynamic and up-to-date information. It makes twitter relevant as a medium of knowledge extraction in identifying user behavior changes. The contribution of this research is to find behavior changes of Twitter users through user profiles analysis in the before and after COVID-19 period. This data used is Indonesian-language tweets. This research used a Social Network Analysis (SNA) to determine the main actors and famous actors. Then, active user profiles were analyzed to identify behavior changes through tweet intensity, user popularity, and representation of the topic of discussion. User popularity was analyzed using a follower rank approach. At the same time, the representation of discussion topics was extracted using the Latent Dirichlet Allocation method to obtain dominant topics which each active user discusses. It aims to make it easier to identify the impact of the COVID-19 pandemic on Twitter user behavior changes. Based on the results of the SNA, this research found three key actors who were active in the before and after COVID-19 period. Then, the results of the analysis of these three user profiles shows that an influence of the COVID-19 pandemic on Twitter user behavior changes: an increase in tweet intensity by 58% during working hours, the leading actor was dominated by 60% of users with low followers, and the topic of Twitter users' conversation that it dominantly discuss COVID-19 issues, hobbies, and activities at home.</em></p><p class="Abstrak"><em><strong><br /></strong></em></p>


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