Opim Salim Sitompul

Enhancement Clustering Evaluation Result of Davies-Bouldin Index with Determining Initial Centroid of K-Means Algorithm

Bernad Jumadi Dehotman Sitompul, Opim Salim Sitompul, Poltak Sihombing · Journal of Physics Conference Series · 2019 · 71 citations · Full text

Cluster Computing, Abstract K-means, Document Clustering +11

Adaptive Moment Estimation To Minimize Square Error In Backpropagation Algorithm

Roy Nuary Singarimbun, Erna Budhiarti Nababan, Opim Salim Sitompul · 2019 · 57 citations

State Estimation, Adaptive Filter, Statistical Signal Processing +14

Improving the accuracy of k-nearest neighbor using local mean based and distance weight

Khairul Umam Syaliman, Erna Budhiarti Nababan, Opim Salim Sitompul · Journal of Physics Conference Series · 2018 · 56 citations · Full text

Engineering, Machine Learning, Biometrics +23

Biased support vector machine and weighted-smote in handling class imbalance problem

Hartono Hartono, Opim Salim Sitompul, Tulus Tulus et al. · International Journal of Advances in Intelligent Informatics · 2018 · 52 citations · Full text

General Svm, Data Classification, Support Vector Machine +14

The effect of the TF-IDF algorithm in times series in forecasting word on social media

Arif Ridho Lubis, Mahyuddin K. M. Nasution, Opim Salim Sitompul et al. · Indonesian Journal of Electrical Engineering and Computer Science · 2021 · 52 citations · Full text

Engineering, Machine Learning, Social Medium Monitoring +23