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Learning the naive bayes classifier with optimization models
- Taheri, Sona, Mammadov, Musa
Limited Memory Bundle Method for Clusterwise Linear Regression
- Karmitsa, Napsu, Bagirov, Adil, Taheri, Sona, Joki, Kaisa
Methods and applications of clusterwise linear regression : a survey and comparison
- Long, Qiang, Bagirov, Adil, Taheri, Sona, Sultanova, Nargiz, Wu, Xue
Missing value imputation via clusterwise linear regression
- Karmitsa, Napsu, Taheri, Sona, Bagirov, Adil, Makinen, Pauliina
In this paper a new method of preprocessing incomplete data is introduced. The method is based on clusterwise linear regression and it combines two well-known approaches for missing value imputation: linear regression and clustering. The idea is to approximate missing values using only those data points that are somewhat similar to the incomplete data point. A similar idea is used also in clustering based imputation methods. Nevertheless, here the linear regression approach is used within each cluster to accurately predict the missing values, and this is done simultaneously to clustering. The proposed method is tested using some synthetic and real-world data sets and compared with other algorithms for missing value imputations. Numerical results demonstrate that the proposed method produces the most accurate imputations in MCAR and MAR data sets with a clear structure and the percentages of missing data no more than 25%
Multi-source cyber-attacks detection using machine learning
- Taheri, Sona, Gondal, Iqbal, Bagirov, Adil, Harkness, Greg, Brown, Simon, Chi, Chihung
New diagonal bundle method for clustering problems in large data sets
- Karmitsa, Napsu, Bagirov, Adil, Taheri, Sona
Nonsmooth DC programming approach to the minimum sum-of-squares clustering problems
- Bagirov, Adil, Taheri, Sona, Ugon, Julien
Nonsmooth optimization-based hyperparameter-free neural networks for large-scale regression
- Karmitsa, Napsu, Taheri, Sona, Joki, Kaisa, Paasivirta, Pauliina, Defterdarovic, J., Bagirov, Adil, Mäkelä, Marko
Nonsmooth optimization-based model and algorithm for semisupervised clustering
- Bagirov, Adil, Taheri, Sona, Bai, Fusheng, Zheng, Fangying
Robust piecewise linear L 1-regression via nonsmooth DC optimization
- Bagirov, Adil, Taheri, Sona, Karmitsa, Napsu, Sultanova, Nargiz, Asadi, Soodabeh
Solving minimax problems : Local smoothing versus global smoothing
- Bagirov, Adil, Sultanova, Nargiz, Al Nuaimat, Alia, Taheri, Sona
Solving systems of nonlinear equations using a globally convergent optimization algorithm
- Taheri, Sona, Mammadov, Musa
Structure learning of Bayesian networks using a new unrestricted dependency algorithm
- Taheri, Sona, Mammadov, Musa
Structure learning of Bayesian Networks using global optimization with applications in data classification
- Taheri, Sona, Mammadov, Musa
Tree augmented naive bayes based on optimization
- Taheri, Sona, Mammadov, Musa
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