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"Kegiatan belanja online sudah menjadi tren belakangan ini. Pandemi Covid-19 yang membatasi kegiatan di luar rumah menjadikan belanja online sebagai alternatif untuk belanja. Kemudahan belanja online memberikan manfaat bagi penggunanya. Namun, jika konsumen memiliki online buying habits yang tidak terencana akan berdampak pada masalah ekonomi, menyebabkan gaya hidup konsumtif dan materialistis, serta menimbulkan sifat individualis. Penelitian ini bertujuan untuk mengetahui variabel-variabel yang menjelaskan online buying habits selama pandemi Covid-19 dan mencari profil mahasiswa dengan online buying habits yang tidak terencana. Variabel yang diduga berhubungan dengan online buying habits adalah kecemasan sosial, kecemasan finansial, wellbeing kesehatan, wellbeing emosi, wellbeing sosial, mood, dan penilaian terhadap online marketplace yang paling sering dikunjungi. Penelitian ini menggunakan metode Partial Least Square dan Classification and Regression Tree. Data yang digunakan adalah data primer yaitu sebanyak 350 mahasiswa S1 FMIPA UI. Pengambilan sampel dilakukan menggunakan teknik quota sampling. Hasil dari penelitian ini adalah variabel kecemasan sosial, wellbeing emosi, wellbeing kesehatan, mood, dan penilaian terhadap online marketplace yang paling sering dikunjungi memiliki hubungan dengan online buying habits secara signifikan. Profil mahasiswa dengan online buying habits tidak terencana adalah mahasiswa dengan wellbeing kesehatan yang buruk dan mahasiswa dengan wellbeing kesehatan yang buruk serta kecemasan sosial yang tinggi.

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Online shopping has become a trend these days. Covid-19 pandemic conditions that limit outdoor activity make online shopping as an alternative to shopping. The ease offered by online shopping benefits the consumers. However, if consumers had unplanned buying habits, it would impact economic problems, lead to a consumptive and materialistic lifestyle, and lead to individualism The purpose of this study is to find out variables that explain the online buying habits during the covid-19 pandemic and to know the profile of students with unplanned online buying habits. Variables suspected corresponded to online buying habits are social anxiety, financial anxiety, health wellbeing, emotions wellbeing, social wellbeing, mood, and assessment of the most frequent visited online marketplace. The study uses the Partial Least Square Method and Classification and Regression Tree. The data used are the primary data: 350 S1 FMIPA UI active students from 2017, 2018, 2019, and 2020 in the academic year 2020/2021 taken by quota sampling. The results of this study are variable social anxiety, emotions wellbeing, health wellbeing, mood, and assessments of the most frequently visited online marketplace have significant relationships with online buying habits. Profile students with unplanned buying habits are students with poor health wellbeing and students with poor health wellbeing and high social anxiety."

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Mahasiswa diharapkan mampu menjadi sumber daya manusia berkualitas dalam bidang pendidikan. Demi terwujudnya harapan tersebut, mahasiswa dituntut untuk berpartisipasi dalam berbagai kegiatan akademis maupun non-akademis. Dalam hal ini banyak mahasiswa merasa stres. Stres akademik yang dialami juga bervariasi, mulai dari stres akademik rendah, sedang, maupun tinggi. Dalam upaya menurunkan stres akademik pada mahasiswa, perlu diketahui variabel-variabel yang signifikan menjelaskan stres akademik pada mahasiswa. Terdapat variabel-variabel demografi,  internal maupun eksternal seperti gender, self-efficacy, hardiness, prokrastinasi akademik, kecemasan terhadap Covid-19, dukungan sosial teman sebaya, dan dukungan sosial orangtua yang diduga dapat menjelaskan stres akademik pada mahasiswa. Selain itu akan dilihat pola hubungan antara stres akademik dan variabel-variabel yang signifikan. Penelitian ini dilakukan pada masa Covid-19 sehingga terdapat variabel seperti kecemasan terhadap Covid-19. Metode yang digunakan pada penelitian ini adalah metode regresi linear berganda dan analisis korespondensi berganda.  Sampel pada penelitian ini adalah mahasiswa S1 FMIPA Universitas Indonesia dengan jumlah 610 mahasiswa. Sampel diambil menggunakan teknik quota sampling. Hasil penelitian menujukkan bahwa variabel-variabel yang signifikan menjelaskan stres akademik adalah gender, self-efficacy, prokrastinasi akademik, kecemasan terhadap Covid-19, dan dukungan sosial orangtua. Penelitian ini juga menujukkan bahwa mahasiswa dengan stres akademik tinggi diketahui memiliki kebiasaan menunda waktu pengerjaan tugas akademik yang tinggi, tingkat kecemasan terhadap Covid-19 yang tinggi , dan tingkat kepercayaan diri (self-efficacy) yang rendah. Selain itu mahasiswa yang memiliki stres akademik rendah memiliki kebiasaan menunda waktu pengerjaan tugas akademik yang rendah, tingkat kecemasan terhadap Covid-19 yang rendah, tingkat kepercayaan diri (self-efficacy) yang tinggi, dukungan sosial orangtua yang tinggi, dan cenderung dialami oleh gender laki-laki.

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Students are expected to be able to become quality human resources in the field of education. In order to realize these hopes, students are required to participate in various academic and non-academic activities. In this case, many students feel stressed. The academic stress experienced also varies, ranging from low, medium, or high academic stress. In an effort to reduce academic stress in students, it is necessary to know the variables that significantly explain academic stress in students. There are demographic variables, internal and external such as gender, self-efficacy, hardiness, academic procrastination, anxiety about Covid-19, peer social support, and parental social support which are thought to explain academic stress in students. Apart from that, we will see the pattern of relationship between academic stress and significant variables. This research was conducted during the Covid-19 era so there were variables such as anxiety about Covid-19. The method used in this research is the multiple linear regression method and multiple correspondence analysis. The sample in this research was undergraduate students from the FMIPA University of Indonesia with a total of 610 students. Samples were taken using quota sampling technique. The research results show that the variables that significantly explain academic stress are gender, self-efficacy, academic procrastination, anxiety about Covid-19, and parental social support. This research also shows that students with high academic stress are known to have a habit of delaying work on academic assignments, high levels of anxiety about Covid-19, and low levels of self-confidence. In addition, students who have low levels of academic stress have a habit of delaying the time for doing academic assignments, low levels of anxiety about Covid-19, high levels of self-efficacy, high parental social support, and tend to be experienced by gender man.

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"Penelitian ini bertujuan untuk mengetahui pengaruh hadirnya fitur belanja pada media sosial populer seperti Instagram Shopping dan TikTok Shop di Indonesia selama masa pandemi Covid-19 sebagai alternatif baru social commerce terhadap perilaku belanja impulsif dan kompulsif produk apparel. Dalam penelitian ini, peneliti mengkaji pengaruh media sosial, motivasi hedonis, kondisi berbelanja online selama pandemi Covid-19 serta peran iklim sosial komunitas pengikut social media influencer terhadap perilaku belanja impulsif dan kompulsif. Penelitian dilaksanakan menggunakan metode variance based Partial Least Square - Structural Equation Modelling (PLS-SEM) secara cross-sectional kepada 475 responden untuk menguji keterkaitan variabel Social Media Influence, Social Commerce, EWOM of Social Commerce, Hedonic (Happiness), Hedonic (Fun), Shopping in the Times of Covid-19, dan variabel moderasi Social Climate terhadap variabel dependen Impulsive Buying dan Compulsive Buying. Hasilnya, didapatkan bahwa Hedonic (Happiness) dan Shopping in the Times of Covid-19 memiliki hubungan signifikan positif terhadap perilaku Impulsive dan Compulsive buying. Hedonic (Fun) serta peran moderasi Social Climate berhubungan signifikan positif dengan Impulsive Buying. Sedangkan variabel lainnya tidak memiliki hubungan signifikan yang positif terhadap variabel Impulsive Buying dan Compulsive Buying.

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This study aims to determine the effect of the presence of shopping features on popular social media namely Instagram Shopping and TikTok Shop in Indonesia during the Covid-19 pandemic as a new social commerce alternative which could affecting impulsive and compulsive shopping behavior for apparel products. In this study, the impact of social media, hedonic motivation, shopping in the times of Covid-19, and social climate of social media influencers community are observed towards impulsive and compulsive shopping behavior. The study used variance-based partial least squares structural equational modelling (PLS-SEM) on a cross-sectional study conducted on 475 respondents observing the association of several variables: Social Media Influence, Social Commerce, EWOM of Social Commerce, Hedonic (Happiness), Hedonic (Fun) variables, Shopping in the Times of Covid-19 and Social Climate as a moderating variable towards the Impulsive Buying and Compulsive Buying as the dependent variables. The study result show that Hedonic (Happiness) and Shopping in the Times of Covid-19 had a significant positive relationship to Impulsive and Compulsive buying behavior. Hedonic (Fun) and the moderating role of Social Climate had a significant positive relationship with Impulsive Buying. Whilst the other variables do not have a positive significant relationship to the Impulsive Buying and Compulsive Buying variables."

"Tujuan utama dari penelitian ini adalah untuk meneliti perbedaan perceived risk antara online shoppers dan non-online shoppers pada jual beli online. Non online shoppers adalah responden yang belum memiliki pengalaman sama sekali dalam berbelanja online. Sedangkan online shoppers adalah responden yang sudah memiliki pengalaman dalam berbelanja secara online.Dalam penelitian ini penulis mengkhususkan objek penelitiannya yaitu jual beli melalui media internet dalam bentuk forum jual beli. Dimensi-dimensi perceived risk yang digunakan dalam penelitian ini adalah financial risk, psychological, time risk, privacy risk, fraud risk, product risk, information risk, dan delivery risk. Dari hasil penelitian ini, diketahui bahwa terdapat perbedaan perceived risk antara online shoppers (pada forum jual beli kaskus.us) dan nononline shoppers pada jual beli online di internet. Responden non-online shoppers mempunyai nilai rata-rata perceived risk yang lebih tinggi dari online shoppers yang artinya responden non-online shoppers merasakan risiko lebih tinggi daripada responden online shoppers.

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The main purpose of this study was to examine the perceived risks diferent between online shoppers and non-online shoppers at e-commerce. Non-online shoppers is respondent's cattegory who had no experience at all in online shopping. While online shoppers is the respondents who already had experience in in online shopping. This study specialize the form of buy and sell forum as research object. In this study also elaborated the dimentions of perceived risk in online shopping at pervious research. Those the dimensions of perceived risk used in this study is financial risk, psychological, time risk, privacy risk, fraud rsik, product risk, information risk, and delivery risk. The results of this study, it is known that there are differences between online shopper's perceived risk (in the buy and sell forum kaskus.us) and non-online shopper's perceived risk in online shopping. As expected, non-online shoppers viewed online shopping riskier than did online shoppers."

"Pada tahun 2012, pengguna internet di Indonesia diperkirakan akan mencapai angka 50 juta pengguna. Seiring dengan peningkatan jumlah pengguna internet, jumlah pebisnis yang menggunakan sistem online juga semakin meningkat. Peningkatan jumlah bisnis online terutama dalam bidang fashion tentu meningkatkan persaingan di pasar. Para pemilik bisnis berlomba untuk memenangkan pasar sehingga produk mereka dapat diterima oleh konsumen. Heterogenitas pasar, yang di dalamnya termasuk perilaku konsumen menjadi kendala utama dalam memenangkan pasar. Oleh karena itu, perlu dilakukan analisis terhadap perilaku konsumen. Tujuan analisis perilaku konsumen ini adalah mengetahui faktor-faktor yang mempengaruhi konsumen dalam mengambil keputusan. Penelitian ini menggunakan analisis faktor untuk mengetahui faktor-faktor apa saja yang mempengaruhi konsumen dalam membuat keputusan, khususnya keputusan untuk membeli produk fashion secara online. Dalam analisis ini, dapat terlihat pengaruh dari karakteristik konsumen, yang meliputi usia, jenis kelamin, tingkat ekonomi, pendidikan, dan pendapatan, pengaruh dari bauran pemasaran yang meliputi harga, produk, distribusi, dan promosi, serta pengaruh dari web experience terhadap keputusan yang akan dibuat oleh konsumen. Dalam analisis faktor, variabel-variabel asli yang jumlahnya banyak direduksi menjadi beberapa faktor, sehingga didapatkan faktor yang lebih sedikit dibandingkan dengan variabel asli tanpa mengurangi infomasi yang terkandung dalam variabel asli. Hasil penelitian ini menunjukkan bahwa faktor-faktor yang mempengaruhi konsumen dalam membuat keputusan untuk membeli produk fashion secara online adalah faktor Web, faktor produk, faktor promosi, dan faktor pelayanan (service). Hasil analisis ini pada akhirnya dapat digunakan sebagai dasar dalam pemilihan atau penetapan strategi pemasaran yang akan dilakukan terutama untuk mengetahui segmentasi pasar yang ada.

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In 2012, Internet users in Indonesia is expected to reach 50 million users. Along with the increasing number of Internet users, the number of businesses that use online system also increased. An increasing number of online businesses, especially in the field of fashion would increase competition in the market. The business owners are competing to win the market so their products can be accepted by consumers. Heterogeneity market, which includes consumer behavior becomes a major obstacle in winning the market. Therefore, there should be an analysis of consumer behavior.

Objective analysis of consumer behavior is to know the factors that influence consumer decisions. This study uses factor analysis to determine the factors that influence consumers in making decisions, particularly the decision to buy the fashion products online. In this analysis, it can be seen the influence of consumer characteristics, which include age, gender, economic level, education, and income, the effect of the marketing mix including price, product, distribution, and promotion, as well as the influence of the web experience to the decision to be made by consumers. In a factor analysis, the original variables of the polynomial reduced to a few factors, so we get a factor of less than the original variables without reducing the information that is contained in the original variables.

The results of this study indicate that the factors that influence consumers in making the decision to buy the fashion products by online is the factor of web, factor of product, factor of promotion, and factors of service. The results of this analysis could eventually be used as a basis in the selection or determination of a marketing strategy that will be conducted primarily to determine the existing market segmentation."

"Tesis ini meganalisa faktor-faktor yang dihipotesiskan dapat mempengaruhi niat konsumen untuk membeli secara online. Ada lima variabel yang dihipotesiskan mempengaruhi niat untuk membeli secara online langsung yaitu Attitude, Product Knowledge, Online Information Search, Perceived Risk, and Trust. Model penelitian ini diambil dari berbagai peneliti seperti jurnal dan juga studi orang. Menggunakan beberapa jurnal seperti, 'Online Purchase Determianants: Is Their Efect Moderated By Direct Experience?' by Broekhuizen and Huizingh 2009; 'The impact of online store environment cues on purchase intention: Trust and perceived risk as a mediator' by Chang and Chen, 2008; ?A Research Modeling to Understand Online Shopping Intention. Australian Journal of Basic & Applied Sciences? by Delafrooz, Paim, Khatibi, 2011; 'Consumer Behavior Research of Factors Influencing Online Purchase Intention' a thesis by Febriyanti, Institut Teknolgi Bandung, 2011. Ada 13 hipotesis yang disimpulkan dari model yang dibangun. Berdasarkan 341 responden konsumer online di wilayah JABODETABEK yang mengetahui secara khusus tentang Bukalapak.com, ditemukan bahwa dari 5 variabel yang dihipotesiskan mempengaruhi niat beli online secara langsung, ditemukan bahwa sebenarnya dalam kenyataan hanya 2 variabel yang secara signifikan mempengaruhi niat untuk membeli secara online. Kedua variabel itu adalah Online Information Search dan Percieved Risk.

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This thesis anlayzes the factors that are hypothesised to affect a consumer's intention to purchase online. There are five variables which are hypothesised to affect intention to purchase online directly which are Attitude, Product Knowledge, Online Information Search, Perceived Risk, and Trust. The model of this research is taken from various researchers such as journals and also past studies of people.

The journals used in some consists of 'Online Purchase Determianants: Is Their Efect Moderated By Direct Experience?' by Broekhuizen and Huizingh 2009; 'The impact of online store environment cues on purchase intention: Trust and perceived risk as a mediator' by Chang and Chen, 2008; 'A Research Modeling to Understand Online Shopping Intention. Australian Journal of Basic & Applied Sciences' by Delafrooz, Paim, Khatibi, 2011; 'Consumer Behavior Research of Factors Influencing Online Purchase Intention' a thesis by Febriyanti, Institut Teknolgi Bandung, 2011.

There are 13 hypotheses concluded from the model constructed. Based on 341 respondents in the JABODETABEK area who are online shoppers and know specifically about Bukalapak.com, it was found that from the 5 variable that are hypothesised to affect online purchase intention directly, it was found that there were actually in reality only 2 variables that significantly affects intention to purchase online. These two variables are online information search and perceived risk."

"Ulasan daring sebagai salah satu bentuk electronic word-of-mouth (EWOM) telah terbukti memotivasi konsumen untuk berbelanja melalui online marketplace di Indonesia. Namun, kebebasan konsumen dalam memberikan ulasan mengakibatkan terjadinya inkonsistensi kualitas informasi yang berpengaruh terhadap kepercayaan dan keputusan pembelian konsumen. Selain itu, masih banyak online marketplace yang belum menyediakan fitur untuk menyaring informasi yang relevan, terbaru, akurat, atau lengkap pada ulasan. Penelitian ini bertujuan untuk menganalisis bagaimana pengaruh dimensi kualitas informasi dari EWOM terhadap keputusan pembelian produk di online marketplace. Penelitian ini menggunakan pendekatan kuantitatif dengan melakukan survei terhadap 1.266 masyarakat Indonesia pengguna online marketplace yang pernah berbelanja dan membaca ulasan dalam kurun waktu tiga bulan terakhir. Data diolah dengan metode covariance-based structural equation modeling menggunakan AMOS 24. Hasil penelitian menunjukkan bahwa keempat dimensi kualitas informasi EWOM, yaitu relevance, timeliness, accuracy, dan comprehensiveness memengaruhi information quality secara signifikan. Selain itu, information quality memengaruhi social psychological distance dan trust secara signifikan. Lalu, social psychological distance memengaruhi trust secara signifikan dan memediasi hubungan antara information quality dengan trust. Selanjutnya, trust memengaruhi purchase intention secara signifikan. Terakhir, purchase intention memengaruhi purchase decision secara signifikan. Hasil penelitian ini dapat memberikan wawasan untuk membantu penyedia layanan online marketplace dalam mengembangkan fitur ulasan yang lebih baik.

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Online review as a form of electronic word-of-mouth (EWOM) has been proven to motivate consumers to shop through online marketplaces in Indonesia. However, the freedom of consumers to provide reviews results in information quality inconsistency that affects consumer trust and purchasing decisions. In addition, some online marketplaces have not yet provided a feature to filter relevant, latest, accurate, or complete information in the review. This study aims to analyze the influence of the information quality dimensions of EWOM on consumer behavior in purchasing products in the online marketplace. This study uses quantitative approach by surveying 1,266 online marketplace users in Indonesia who have purchased products and read the reviews in the last three months. The data were processed in AMOS 24 by using the covariance-based structural equation modeling method. The results shows that the four dimensions of EWOM information quality, namely relevance, timeliness, accuracy, and comprehensiveness significantly influence information quality. After that, information quality significantly influences social psychological distance and trust. Then, social psychological distance significantly influences trust and mediates the relationship between information quality and trust. Furthermore, trust significantly influences purchase intention. Finally, purchase intention significantly influences purchase decision. The results of this study can provide insight to assist online marketplace service providers in developing better online review features."

"Penelitian ini menganalisa keberadaan House Of Korea yang menjadi jembatan dalam menyebarkan produk budaya pop Korea. Penyebaran budaya pop menjadi sarana untuk melanggengkan kapitalisme dan ideologi Korea. Menggunakan teori imperialisme struktural untuk menganalisis House Of Korea yang menjalankan peran sebagai jembatan yang menjalin kerjasama antara elite negara maju (Korea) dan negara berkembang (Indonesia). Menggunakan kajian politik ekonomi komunikasi untuk mengetahui terjadinya proses spasialisasi dalam distribusi produk budaya Korea ke Indonesia. Hasil penelitian ini membuktikan pemilik House Of Korea menjalankan peran penting dalam terjadinya keseluruhan struktur imperialisme.

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This study analyzes the existence of House Of Korea as a bridge to spread the Korean pop culture products. Korean wave becomes a tool to perpetuate the capitalism and ideology of Korea. Using structural imperialistic theory to analyze House Of Korea‟s role as a bridge which runs the established cooperation between elite of the developed countries (Korea) and developing countries (Indonesia). Using political economy communication aims to know the process of spacialization in distribution cultural products of Korea to Indonesia. The results of this study prove the owner of House of Korea an important role in the whole structure of imperialism."

"Dengan perdagangan daring di Indonesia yang mengalami puncak pertumbuhan yang sangat tinggi, Indonesia telah menjadi salah satu negara di Asia Tenggara dengan pasar besar di sektor perekonomian baru-baru ini. Hasil dari perkembangan inipun membawa peluang maupun tantangan baru bagi manajemen logistik e-commerce, terutama dengan sektor logistik yang telah menjadi tulang punggung aktivitas e-commerce. Kualitas layanan telah menjadi tema prioritas dalam penelitian pemasaran dan logistik, sejalan dengan kepentingan dalam kualitas, manajemen kualitas, dan kepuasan di perusahaan. Penelitian ini bertujuan untuk melihat penerapan manajemen kualitas pada layanan logistik (kualitas informasi, kualitas pemesanan, kualitas pengiriman, harga pengiriman, dan pelayanan pelanggan) dalam belanja daring di Indonesia untuk membangun hubungan jangka panjang dengan pelanggan lewat variabel repurchase intention dan loyalty dengan mediasi customer satisfaction, dimana penelitian difokuskan pada industri online fashion yang sedang meningkat secara global dan berkontribusi secara signifikan pada ekonomi kreatif nasional. Survei terhadap 202 responden dilakukan dan diuji dengan metode Partial Least Squares - Structural Equation Modeling (PLS-SEM). Hasil penelitian menunjukkan bahwa kualitas pemesanan, kualitas pengiriman, harga pengiriman, dan pelayanan pelanggan berpengaruh terhadap customer satisfaction kecuali pada hubungan dari kualitas informasi. Kemudian customer satisfaction juga memiliki hubungan yang signifikan dengan repurchase intention dan loyalty.

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With e-commerce experiencing a very high growth peak in Indonesia, Indonesia has become one of the countries in Southeast Asia with a large market in the recent economic sector. The results of this development also bring new opportunities and challenges for e-commerce logistics management, especially with the logistics sector that has become the backbone of ecommerce activities. Service quality has become a priority theme in marketing and logistics research, in line with interests in quality, quality management, and satisfaction in companies. This study aims to examine the application of quality management in logistics services (information quality, order quality, delivery quality, shipping prices, and customer service) in online shopping in Indonesia to build long-term relationships with customers through repurchase intention and loyalty variables with customer satisfaction mediation, where research is focused on the online fashion industry which is now rising globally and contributes significantly to the national creative economy. A survey of 202 respondents was conducted and tested using the Partial Least Squares - Structural Equation Modeling (PLS-SEM) method. The results showed that the quality of orders, quality of delivery, price of delivery, and customer service affect customer satisfaction except for the relationship of information quality. Then customer satisfaction also has a significant relationship with repurchase intention and loyalty."

"Coronavirus Disease 2019 (COVID-19) merupakan penyakit yang telah menyebar secara meluas di berbagai negara, termasuk Indonesia. Berdasarkan Peraturan Pemerintah Nomor 99 Tahun 2020, salah satu bentuk penanganan kasus COVID-19 di Indonesia adalah pelaksanaan vaksinasi COVID-19 yang bertujuan untuk membentuk kekebalan kelompok pada masyarakat Indonesia. Kesediaan seseorang dalam melakukan vaksinasi COVID-19 menjadi hal yang penting dalam menyukseskan program vaksinasi COVID-19 dan membentuk kekebalan kelompok dalam masyarakat sehingga dapat menekan tersebarnya kasus COVID-19. Oleh karena itu, perlu dilakukan penggalakan vaksinasi COVID-19 dengan menganalisis faktor-faktor yang dapat menjelaskan kesediaan melakukan vaksinasi COVID-19 dan hal inilah yang menjadi tujuan dari penelitian ini. Metode statistika yang digunakan dalam penelitian ini adalah pohon klasifikasi dengan menggunakan cost matrix sebagai strategi menyeimbangkan data. Data yang digunakan merupakan data primer yang diperoleh melalui kuesioner dengan sampel berukuran 278 mahasiswa FMIPA UI dan teknik sampling yang digunakan dalam pengambilan sampel adalah purposive sampling. Hasil analisis dari penelitian ini menunjukkan bahwa faktor-faktor yang dapat menjelaskan kesediaan melakukan vaksinasi COVID-19 adalah keraguan terhadap dampak vaksinasi COVID-19, persepsi terhadap kebergunaan vaksinasi COVID-19, pengetahuan terhadap vaksin COVID-19, adanya riwayat komorbid, pengetahuan terhadap COVID-19, dan provinsi tempat tinggal.

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Coronavirus Disease 2019 (COVID-19) is a disease that has spread widely in various countries, including Indonesia. Based on Government Regulation Number 99 of 2020, one of the ways to handling COVID-19 cases in Indonesia is the COVID-19 vaccination program that aims to form herd immunity in society. Willingness to get vaccinated against COVID-19 is an important thing to succeed the COVID-19 vaccination program and forming herd immunity in society so that it can suppress the spread of COVID-19 cases. Therefore, it is necessary to urge the importance of COVID-19 vaccination by analysing the factors that explain the willingness to get vaccinated against COVID-19 and it becomes the purpose of this research. The statistical method used in this research is Classification Tree by using the Cost Matrix as a strategy to balance the imbalanced data. The data used in this research is primary data obtained through a questionnaire with a sample of 278 FMIPA UI students collected by using purposive sampling as the sampling method. The results obtained from this research indicate that the factors that can explain the willingness to do the COVID-19 vaccination are doubtfulness about the impact of COVID-19 vaccination, perceptions of the usefulness of COVID-19 vaccination, knowledge of the COVID-19 vaccine, history of comorbid disease, knowledge of COVID-19, and province of residence."