Abstract:Abstract: The purpose of this social service is to provide learning media training based on the presentation application, Sparcol and Powtoon. This activity was given to teachers in Elementary School 9 Purwodadi. The social…
ial service session consists of installing an application, creating an account, adding images and text, changing the background, and saving the results that have been made. The model used is a workshop model with lectures, demonstrations, question and answer and direct practice methods. Evaluation is done by distributing information and motivation questionnaires to participants and product checklists. In general, participants claimed that the training schedule was right, the time sharing (lectures, demonstrations, question-answer and direct practice) was also felt positively by the participants. Participants are satisfied with the topic presented and feel that most of the expectations and objectives of the social service are fulfilled. Evaluation results indicate that the material delivered can be followed well.
Keyword: Powtoon Training, Sparcol Training, Elementary School
Abstrak: Tujuan dari pengabdian ini adalah memberikan pelatihan media pembelajaran berbasis aplikasi presentasi Sparcol dan Powtoon. Kegiatan pengabdian ini diberikan kepada guru-guru SD Negeri 9 Purwodadi. Sesi pengabdian terdiri dari instal aplikasi, membuat akun, menambah gambar dan teks, merubah background, dan menyimpan hasil yang telah dibuat. Model yang digunakan adalah model lokakarya dengan ceramah, demonstrasi, tanya jawab dan metode praktik langsung. Evaluasi dilakukan dengan menyebarkan angket informasi dan motivasi kepada peserta dan daftar periksa produk. Secara umum, peserta mengklaim bahwa jadwal pelatihan sudah tepat, pembagian waktu (ceramah, demonstrasi, tanya jawab dan praktik langsung) juga dirasakan positif oleh peserta. Peserta puas dengan topik yang disajikan dan merasa bahwa sebagian besar harapan dan tujuan pengabdian terpenuhi. Hasil evaluasi menunjukkan bahwa materi yang disampaikan dapat diikuti dengan baik.
Kata Kunci: Pelatihan Powtoon, Pelatihan Sparcol, Sekolah Dasar
Abstract:Abstract: The increasing use of the Maxim ride-hailing application in Manokwari highlights the need to understand the factors influencing user acceptance and satisfaction. However, the growing number of users does not necessarily…
cessarily reflect a high level of technology acceptance and user satisfaction. This study aims to examine the effects of performance expectancy, effort expectancy, facilitating conditions, and habit on behavioral intention, as well as the effect of behavioral intention on user satisfaction among Maxim users in Manokwari. A quantitative approach based on the Unified Theory of Acceptance and Use of Technology 2 (UTAUT2) was employed. Data were collected through questionnaires using a purposive sampling technique from 156 valid respondents and analyzed using Partial Least Squares Structural Equation Modeling (PLS-SEM) with SmartPLS 4.0. The results show that performance expectancy (β = 0.343, p < 0.001), effort expectancy (β = 0.191, p = 0.002), facilitating conditions (β = 0.142, p = 0.029), and habit (β = 0.359, p < 0.001) positively and significantly influence behavioral intention. Furthermore, behavioral intention positively and significantly affects user satisfaction (β = 0.771, p < 0.001). These findings confirm the applicability of the UTAUT2 model and provide practical insights for Maxim management and application developers to improve service quality and user satisfaction.
Keywords: behavioral intention; effort expectancy; facilitating conditions; habit; performance expectancy; user satisfaction.
Abstrak: Meningkatnya penggunaan aplikasi transportasi daring Maxim di Manokwari mendorong perlunya memahami faktor-faktor yang memengaruhi penerimaan teknologi dan kepuasan pengguna. Namun, peningkatan jumlah pengguna belum tentu mencerminkan tingginya tingkat penerimaan teknologi dan kepuasan pengguna. Penelitian ini bertujuan menganalisis pengaruh performance expectancy, effort expectancy, facilitating conditions, dan habit terhadap behavioral intention, serta pengaruh behavioral intention terhadap user satisfaction pada pengguna aplikasi Maxim di Manokwari. Penelitian ini menggunakan pendekatan kuantitatif berdasarkan model Unified Theory of Acceptance and Use of Technology 2 (UTAUT2). Data dikumpulkan melalui kuesioner menggunakan teknik purposive sampling terhadap 156 responden dan dianalisis menggunakan Partial Least Squares Structural Equation Modeling (PLS-SEM) dengan SmartPLS 4.0. Hasil penelitian menunjukkan bahwa performance expectancy (β = 0,343; p < 0,001), effort expectancy (β = 0,191; p = 0,002), facilitating conditions (β = 0,142; p = 0,029), dan habit (β = 0,359; p < 0,001) berpengaruh positif dan signifikan terhadap behavioral intention. Selanjutnya, behavioral intention berpengaruh positif dan signifikan terhadap user satisfaction (β = 0,771; p < 0,001). Temuan ini menegaskan penerapan model UTAUT2 serta memberikan masukan bagi manajemen Maxim dan pengembang aplikasi untuk meningkatkan kualitas layanan dan kepuasan pengguna.
Kata kunci: behavioral intention; effort expectancy; facilitating conditions; habit; performance expectancy; user satisfaction.
Abstract:Abstract: Digital technology has expanded the usage of mobile apps like M-Tix for movie ticket booking. The success of an app depends on its features, user experience, and technical acceptability. The User Experience Questionnaire…
stionnaire (UEQ) and Technology acceptability Model (TAM) will be used to examine how user experience affects technology acceptability and M-Tix application usage in Manokwari Regency. Quantitative methods were used with 149 respondents. SmartPLS 4 was used to analyse data using PLS-SEM. Researchers found that Hedonic Quality positively impacts Perceived Usefulness (β=0.288; p=0.005). Pragmatic Quality significantly impacts Perceived Ease of Use (β=0.651; p<0.001) and Usefulness (β=0.372; p=0.002). Additionally, Perceived Ease of Use (β=0.180; p=0.043) and Usefulness (β=0.453; p<0.001) favourably impact Behavioural Intention. However, Perceived Ease of Use does not substantially impact Perceived Usefulness (β=0.105; p=0.265). These data show that user experience is crucial to technological adoption and M-Tix application usage.
Keywords: m-tix; PLS-SEM; technology acceptance model (TAM); user experience; user experience questionnaire (UEQ).
Abstrak: Teknologi digital telah memperluas penggunaan aplikasi seluler seperti M-Tix untuk pemesanan tiket film. Keberhasilan suatu aplikasi bergantung pada fitur-fiturnya, pengalaman pengguna, dan penerimaan teknis. Kuesioner Pengalaman Pengguna (UEQ) dan Model Penerimaan Teknologi (TAM) akan digunakan untuk meneliti bagaimana pengalaman pengguna memengaruhi penerimaan teknologi dan penggunaan aplikasi M-Tix di Kabupaten Manokwari. Metode kuantitatif digunakan dengan 149 responden. SmartPLS 4 digunakan untuk menganalisis data menggunakan PLS-SEM. Peneliti menemukan bahwa Kualitas Hedonik berdampak positif pada Kegunaan yang Dirasakan (β=0,288; p=0,005). Kualitas Pragmatis berdampak signifikan pada Kemudahan Penggunaan yang Dirasakan (β=0,651; p<0,001) dan Kegunaan (β=0,372; p=0,002). Selain itu, Kemudahan Penggunaan yang Dirasakan (β=0,180; p=0,043) dan Kegunaan (β=0,453; p<0,001) berdampak positif terhadap Niat Perilaku. Namun, Kemudahan Penggunaan yang Dirasakan tidak berdampak signifikan terhadap Kegunaan yang Dirasakan (β=0,105; p=0,265). Data ini menunjukkan bahwa pengalaman pengguna sangat penting untuk adopsi teknologi dan penggunaan aplikasi M-Tix.
Kata kunci: m-tix; PLS-SEM; technology acceptance model (TAM); user experience; user experience questionnaire (UEQ).
Abstract:Abstract: The rapid expansion of digital learning environments has increased students’ reliance on Learning Management Systems (LMS), including SPOT UPI. However, limited studies have examined the platform’s overall user…
user experience across all User Experience Questionnaire (UEQ) dimensions. This study aims to evaluate the user experience (UX) of SPOT UPI, identify its strengths and weaknesses, and provide recommendations for system improvement. A quantitative-dominant mixed-method design was applied, involving 81 student respondents for the UEQ survey and two participants for follow-up semi-structured interviews selected through purposive sampling. The UEQ data were analyzed to generate mean scores for six UX dimensions, while interview data were thematically analyzed to support the interpretation of quantitative findings. The results indicate that Perspicuity (1.05) and Efficiency (0.78) achieved the highest scores, reflecting adequate clarity and functionality. In Contrast, Stimulation (0.50) and Novelty (-0.15) were the lowest, indicating limited engagement and innovation. Overall, pragmatic quality (0.84) outperformed hedonic quality (0.17), suggesting that users value functionality more than enjoyment. In conclusion, SPOT UPI is generally usable but lacks aesthetic appeal, emotional engagement, and innovative features, highlighting the need for interface redesign and performance optimization to enhance the overall learning experience.
Keywords: learning management system; user experience; user experience questionnaire
Abstrak: Perkembangan pembelajaran digital membuat mahasiswa semakin bergantung pada Learning Management System (LMS), termasuk SPOT UPI. Meski digunakan secara luas, evaluasi pengalaman pengguna secara komprehensif berdasarkan seluruh dimensi User Experience Questionnaire (UEQ) masih belum banyak dilakukan. Penelitian ini bertujuan untuk mengevaluasi user experience (UX) pada SPOT UPI, mengidentifikasi keunggulan dan kelemahannya, serta memberikan rekomendasi perbaikan sistem. Penelitian menggunakan desain penelitian mixed-method dominan kuantitatif, melibatkan 81 responden pada survei UEQ dan dua partisipan pada wawancara semi-terstruktur yang dipilih melalui purposive sampling. Data UEQ dianalisis untuk memperoleh nilai rata-rata pada enam dimensi UX, sedangkan data wawancara dianalisis secara tematik untuk memperkaya interpretasi temuan kuantitatif. Hasil menunjukkan bahwa Perspicuity (1,05) dan Efficiency (0,78) menjadi dimensi dengan skor tertinggi, mencerminkan bahwa SPOT UPI mudah dipahami dan cukup membantu dalam menyelesaikan tugas. Sebaliknya, Stimulation (0,50) dan Novelty (-0,15) memperoleh skor terendah, menandakan rendahnya tingkat keterlibatan dan inovasi yang dirasakan pengguna. Secara keseluruhan, pragmatic quality (0,84) lebih tinggi dibandingkan hedonic quality (0,17), menunjukkan bahwa pengguna lebih mengutamakan aspek fungsional daripada kenyamanan emosional. Temuan tersebut mengindikasikan bahwa SPOT UPI sudah layak digunakan secara fungsional, tetapi masih memerlukan peningkatan pada interface, pengalaman visual, dan fitur inovatif agar dapat memberikan pengalaman belajar digital yang lebih menarik dan optimal.
Kata kunci: learning management system; pengalaman pengguna; user experience questionnaire
Abstract:Abstract: Digital banking has brought various innovations in financial services, one of which is Blu Deposito by BCA Digital. However, the adoption rate of digital deposit services is still relatively low compared to digital…
ital payment services. This study aims to identify and analyze the factors that influence customers' intentions and actual behavior in using Blu Deposito with reference to the Technology Acceptance Model (TAM). This study aims to analyze the factors that influence customers' intentions and actual behavior in adopting Blu Deposito using the Technology Acceptance Model (TAM) framework. Data was collected through a Google Form questionnaire from 54 customers at one BCA branch and analyzed using SPSS through validity and reliability tests, descriptive analysis, and multiple regression. The results show that Behavioral Intention (BI)is significantly influenced by Perceived Ease of Use (PEOU), Perceived Usefulness (PU), and Attitude Toward Using (ATU), with PEOU as the most dominant factor. In addition, BI has a significant effect on Actual System Use (AU), which confirms the relevance of applying the TAM model in the context of digital deposit products. These findings indicate that ease of use plays a greater role than financial benefits in encouraging users to adopt Blu Deposits. This study contributes to the understanding of digital deposit adoption and provides managerial insights to improve the usability and user engagement of digital banking services.
Keywords: actual system use; attitude toward using; behavioral intention; perceived ease of use; perceived usefulness; technology acceptance model
Abstrak: Perbankan digital telah menghadirkan berbagai inovasi dalam layanan keuangan, salah satunya Blu Deposito oleh BCA Digital. Meskipun demikian, tingkat adopsi terhadap layanan deposito digital masih relatif rendah dibandingkan dengan layanan pembayaran digital. Penelitian ini bertujuan untuk mengidentifikasi dan menganalisis faktor-faktor yang memengaruhi niat serta perilaku aktual nasabah dalam menggunakan Blu Deposito dengan mengacu pada kerangka Technology Acceptance Model (TAM). Penelitian ini bertujuan untuk menganalisis faktor-faktor yang memengaruhi niat dan perilaku aktual nasabah dalam mengadopsi Blu Deposito dengan menggunakan kerangka Technology Acceptance Model (TAM). Data dikumpulkan melalui kuesioner Google Form dari 54 nasabah di satu cabang BCA dan dianalisis menggunakan SPSS melalui uji validitas, reliabilitas, analisis deskriptif, dan regresi berganda. Hasil penelitian menunjukkan bahwa Behavioral Intention (BI) dipengaruhi secara signifikan oleh Perceived Ease of Use (PEOU), Perceived Usefulness (PU), dan Attitude Toward Using (ATU), dengan PEOU sebagai faktor paling dominan. Selain itu, BI berpengaruh signifikan terhadap Actual System Use (AU), yang menegaskan relevansi penerapan model TAM pada konteks produk deposito digital. Temuan ini menunjukkan bahwa kemudahan penggunaan memiliki peran lebih besar dibandingkan manfaat finansial dalam mendorong pengguna untuk mengadopsi Blu Deposito. Penelitian ini berkontribusi terhadap pemahaman adopsi deposito digital serta memberikan wawasan manajerial untuk meningkatkan kegunaan dan keterlibatan pengguna pada layanan perbankan digital.
Kata kunci: actual system use; attitude toward using; behavioral intention; perceived ease of use; perceived usefulness; technology acceptance model
Abstract:Abstract: Posyandu cadres play an important role in supporting community health services at the village and sub-district levels. However, the selection process for the best cadres is often carried out subjectively without…
t clear and standardized criteria. This condition can lead to a decline in service quality and reduced cadre motivation. Therefore, a decision support system is needed to provide assessments that are objective, measurable, and accountable. This study aims to optimize the Posyandu cadre selection process in Lubuk Kilangan District through the development of a decision support system based on a hybrid method: Analytical Hierarchy Process (AHP) and Technique for Order Preference by Similarity to Ideal Solution (TOPSIS). The AHP method is applied to determine the weight of each selection criterion based on its level of importance through pairwise comparisons. Subsequently, TOPSIS is used to rank candidates according to their proximity to the ideal solution. The methodology includes a literature review, primary data collection through interviews and questionnaires with stakeholders (community health centers, cadres, and village officials), as well as the implementation and testing of the AHP–TOPSIS–based system.
Keywords: Posyandu, Cadre, AHP, TOPSIS, Decision Support System
Abstrak: Kader Posyandu memiliki peran penting dalam mendukung layanan kesehatan masyarakat di tingkat desa dan kelurahan. Namun, proses pemilihan kader terbaik masih sering dilakukan secara subjektif tanpa acuan kriteria yang jelas dan terstandarisasi. Kondisi ini dapat mengakibatkan penurunan kualitas pelayanan serta rendahnya motivasi kader. Oleh karena itu, dibutuhkan suatu sistem penunjang keputusan yang mampu memberikan hasil penilaian yang objektif, terukur, dan dapat dipertanggungjawabkan. Penelitian ini bertujuan untuk mengoptimalkan proses pemilihan kader Posyandu di Kecamatan Lubuk Kilangan melalui pengembangan sistem penunjang keputusan berbasis metode hybrid Analytical Hierarchy Process (AHP) dan Technique for Order Preference by Similarity to Ideal Solution (TOPSIS). Metode AHP digunakan untuk menetapkan bobot masing-masing kriteria pemilihan kader berdasarkan tingkat kepentingan melalui perbandingan berpasangan. Selanjutnya, metode TOPSIS digunakan untuk melakukan pemeringkatan calon kader berdasarkan kedekatannya terhadap solusi ideal. Metode yang digunakan dalam penelitian ini mencakup studi literatur, pengumpulan data primer melalui wawancara dan kuesioner kepada stakeholder terkait (puskesmas, kader, dan perangkat desa), serta implementasi dan pengujian sistem berbasis AHP-TOPSIS.
Kata kunci: Posyandu, Kader, AHP, TOPSIS, Sistem Pendukung Keputusan
Abstract:Giving awards is essential to motivate students; however, selecting outstanding students at the junior high school level is often conducted manually and subjectively, which can lead to unfairness and prolonged processing…
time. This study develops a Decision Support System (DSS) that integrates the Analytical Hierarchy Process (AHP) and the Technique for Order Preference by Similarity to Ideal Solution (TOPSIS) to support objective and transparent student selection. A quantitative descriptive approach was employed, with data collected through questionnaires, interviews, and documentation at two state junior high schools in Banjarmasin City. Seven assessment criteria were applied: attendance, behavior, uniform neatness, extracurricular participation, academic grades, competition achievements, and disciplinary records. AHP was used to determine the weight of each criterion, while TOPSIS ranked students based on these weights. The web-based system was developed using PHP and MySQL and evaluated using the Technology Acceptance Model (TAM). Results show that academic grades had the highest weight (28.5%), followed by attendance (22.3%) and competition performance (15.2%). The TAM evaluation yielded average scores of 4.32 for Perceived Ease of Use, 4.40 for Perceived Usefulness, 4.15 for Attitudes Towards Use, and 4.28 for Behavioral Intention to Use. The DSS produces accurate rankings, is well-received by users, and offers an efficient, fair, and replicable solution for data-driven educational governance in the digital era.
Abstract:Abstract: The use of e-learning in non-formal education is increasingly important to support the improvement of access to learning, one of which is through the online platform. This study aims to analyze the quality of online…
nline services using WebQual 4.0 and Im-portance Performance Analysis (IPA) methods to evaluate the suitability between user expectations and perceptions. The research method used a quantitative approach by distributing questionnaires to active users, then analyzed using the WebQual Index to measure the overall quality of the system as well as the IPA to determine improvement priorities. The results showed that the quality of SeTARA Online was relatively good with a WebQual Index value of 0.798. However, there is still a gap between user expectations and satisfaction with a negative gap value of -0.238. The IPA analysis identified indicators in Quadrant I as priority improvements, especially in the aspects of service interaction and information presentation. These findings underscore the need for continuous development of features and technical support to optimize the user experience. The conclusion of this study suggests that there should be improvements in priority indicators to increase user satisfaction, as well as strengthen the effectiveness of online learning. Advanced research can expand variables, compare with other platforms, and combine quantitative and qualitative analysis methods for more comprehensive results.
Keywords: e-learning; importance performance analysis; quality of service; online equivalent; webqual 4.0
Abstract:Abstract: Program Indonesia Pintar (PIP) is government assistance program aimed at supporting the education of underprivileged students. However, some PIP fund recipients are misallocated, with aid given to students who…
do not fully meet the eligibility criteria, while those in greater need don’t receive it, including at SDN 014672 Tanjung Alam, Asahan Regency, North Sumatra Province. Based on this issue, a structured system is needed. The purpose of this study is to construct decision support systems for determining PIP fund recipients using Additive Ratio Assessment (ARAS) method. Data was collected using questionnaires, documentation, and observation techniques. Respondents consisted of 8 students from SDN 014672 Tanjung Alam. Criteria include number of dependents, homeownership status, attendance rate, and students final grades. System was developed using CodeIgniter 3 as framework, MySQL as database software, and InnoDB as database engine. ARAS method was applied to rank available alternatives. Based on calculations, first rank was obtained by alternative 6 (Malika Hendra As-Syifa), second rank by alternative 7 (Mutia Indah Sari), and third rank by alternative 8 (Rafa Kavindra). This study is expected to be further developed by applying other DSS methods, performing regular system maintenance, and integrating system with school data to improve accuracy and usability.
Keywords: additive ratio assessment; decision support system; smart indonesia program.
Abstrak: Program Indonesia Pintar (PIP) merupakan bantuan pemerintah untuk mendukung pendidikan siswa kurang mampu. Namun, masih ditemukan penerima anggaran PIP yang kurang tepat sasaran, di mana bantuan diberikan kepada siswa yang kurang memenuhi kriteria, sementara siswa yang lebih membutuhkan tidak menerimanya, termasuk di SDN 014672 Tanjung Alam, Kabupaten Asahan, Provinsi Sumatera Utara. Berdasarkan permasalahan tersebut, dibutuhkan sebuah sistem terstruktur. Tujuan penelitian ini untuk membangun sistem pendukung keputusan penetapan pemeroleh anggaran PIP menggunakan metode Additive Ratio Assessment (ARAS). Data dikumpulkan dengan teknik angket, dokumentasi, dan observasi. Responden adalah 8 siswa SDN 014672 Tanjung Alam. Kriteria meliputi jumlah tanggungan orang tua, status kepemilikan rumah, tingkat kehadiran, dan nilai akhir siswa. Sistem dirancang menggunakan CodeIgniter 3 sebagai framework, MySQL sebagai database software, dan InnoDB sebagai database engine. Perhitungan dengan metode ARAS digunakan untuk merangking alternatif yang ada. Berdasarkan perhitungan yang dilakukan, peringkat pertama diperoleh oleh alternatif 6 yakni Malika Hendra As-Syifa, peringkat kedua diperoleh oleh alternatif 7 yakni Mutia Indah sari, dan peringkat ketiga diperoleh oleh alternatif 8 yakni Rafa Kavindra. Penelitian ini diharapkan dapat dikembangkan lebih lanjut dengan menerapkan metode Sistem Pendukung Keputusan (SPK) lainnya, melakukan pemeliharaan sistem secara berkala, serta mengintegrasikan sistem dengan data sekolah untuk meningkatkan keakuratan dan kemudahan penggunaan.
Kata kunci: additive ratio assessment; program indonesia pintar; sistem pendukung keputusan
Abstract:Abstract: Bekasi Regency, being one of the key cities in Indonesia, offers a suitable setting to study the intricacies of marriage decision-making during a quarter-life crisis. This study focuses on the application of clustering…
ustering algorithms to categorize individuals based on their marriage choices. Data was collected from a questionnaire completed by 110 respondents from Bekasi Regency, specifically individuals aged 18 to 30 who are single, including 80 women and 30 men. Data analysis was conducted using the RapidMiner software to evaluate the effectiveness of three clustering algorithms K-Means, X-Means, and K-Medoids in categorizing marriage decision patterns among young people experiencing a Quarter Life Crisis in Bekasi Regency. Results indicate that each algorithm has its own strengths and limitations in handling Quarter Life Crisis data.The results of the analysis show that the K-medoids algorithm provides the best clustering results with the lowest DBI value of 0.195, followed by the X-Means algorithm with a value of 0.199 and K-Means with a value of 0.207. These results can help understand the pattern of marriage decisions in the Quarter Life Crisis phase and help provide insights for policymakers in Bekasi Regency to make more effective intervention programs.
Keywords: K-Means; K-Medoids; X-Means
Abstrak: Sebagai salah satu kota besar di Indonesia, Kabupaten Bekasi memberikan konteks yang tepat untuk mempelajari kompleksitas pengambilan keputusan pernikahan di tengah krisis seperempat usia. Penelitian ini berfokus pada pemanfaatan algoritma clustering untuk mengelompokkan individu berdasarkan pilihan pernikahan mereka. Data diambil dari kuesioner yang diisi oleh 110 responden di Kabupaten Bekasi, yang terdiri dari individu lajang berusia 18 hingga 30 tahun, yaitu 80 perempuan dan 30 laki-laki. Analisis data dilakukan dengan perangkat lunak RapidMiner untuk mengevaluasi efektivitas tiga algoritma pengelompokan—K-Means, X-Means, dan K-Medoids—dalam mengelompokkan pola keputusan pernikahan di kalangan pemuda yang menghadapi Quarter Life Crisis di Kabupaten Bekasi. Hasilnya menunjukkan bahwa setiap algoritma memiliki keunggulan dan kelemahannya masing-masing dalam memproses data Quarter Life Crisis. Hasil analisis menunjukkan bahwa algoritma K-medoids memberikan hasil clustering terbaik dengan nilai DBI terendah yaitu 0.195, diikuti oleh algoritma X-Means dengan nilai 0.199 dan K-Means dengan nilai 0.207. Hasil ini dapat membantu memahami pola keputusan menikah pada fase Quarter Life Crisis dan membantu memberikan wawasan bagi pembuat kebijakan di Kabupaten Bekasi membuat program intervensi yang lebih efektif.
Kata kunci: K-Means; K-Medoids; X-Means