Limited memory interior point bundle method for large inequality constrained nonsmooth minimization. - N. M. S. Karmitsa; Marko M. Mäkelä; M. M. Ali (Appl. Math. Comput., 2008)

Limited memory bundle method for large bound constrained nonsmooth optimization: convergence analysis. - Napsu Karmitsa; Marko M. Mäkelä (Optim. Methods Softw., 2010)

Globally Convergent Cutting Plane Method for Nonconvex Nonsmooth Minimization. - Napsu Karmitsa; Mario Tanaka Filho; José Herskovits (J. Optim. Theory Appl., 2011)

Comparing different nonsmooth minimization methods and software. - N. M. S. Karmitsa; Adil M. Bagirov; Marko M. Mäkelä (Optim. Methods Softw., 2012)

A continuation approach to mode-finding of multivariate Gaussian mixtures and kernel density estimates. - Seppo Pulkkinen; Marko M. Mäkelä; Napsu Karmitsa (J. Glob. Optim., 2013)

Subgradient Method for Nonconvex Nonsmooth Optimization. - Adil M. Bagirov; L. Jin; Napsu Karmitsa; A. Al Nuaimat; Napsu Sultanova (J. Optim. Theory Appl., 2013)

A generative model and a generalized trust region Newton method for noise reduction. - Seppo Pulkkinen; Marko M. Mäkelä; Napsu Karmitsa (Comput. Optim. Appl., 2014)

Diagonal Bundle Method for Nonsmooth Sparse Optimization. - Napsu Karmitsa (J. Optim. Theory Appl., 2015)

Testing Different Nonsmooth Formulations of the Lennard-Jones Potential in Atomic Clustering Problems. - Napsu Karmitsa (J. Optim. Theory Appl., 2016)

New diagonal bundle method for clustering problems in large data sets. - Napsu Karmitsa; Adil M. Bagirov; Sona Taheri (Eur. J. Oper. Res., 2017)

Method for solving generalized convex nonsmooth mixed-integer nonlinear programming problems. - Ville-Pekka Eronen; Jan Kronqvist; Tapio Westerlund; Marko M. Mäkelä; Napsu Karmitsa (J. Glob. Optim., 2017)

A proximal bundle method for nonsmooth DC optimization utilizing nonconvex cutting planes. - Kaisa Joki; Adil M. Bagirov; Napsu Karmitsa; Marko M. Mäkelä (J. Glob. Optim., 2017)

Clustering in large data sets with the limited memory bundle method. - Napsu Karmitsa; Adil M. Bagirov; Sona Taheri (Pattern Recognit., 2018)

Double Bundle Method for finding Clarke Stationary Points in Nonsmooth DC Programming. - Kaisa Joki; Adil M. Bagirov; Napsu Karmitsa; Marko M. Mäkelä; Sona Taheri (SIAM J. Optim., 2018)

Diagonal bundle method with convex and concave updates for large-scale nonconvex and nonsmooth optimization. - Napsu Karmitsa; Manlio Gaudioso; Kaisa Joki (Optim. Methods Softw., 2019)

Special Issue "Nonsmooth Optimization in Honor of the 60th Birthday of Adil M. Bagirov": Foreword by Guest Editors. - Napsu Karmitsa; Sona Taheri (Algorithms, 2020)

Clusterwise support vector linear regression. - Kaisa Joki; Adil M. Bagirov; Napsu Karmitsa; Marko M. Mäkelä; Sona Taheri (Eur. J. Oper. Res., 2020)

Aggregate subgradient method for nonsmooth DC optimization. - Adil M. Bagirov; Sona Taheri; Kaisa Joki; Napsu Karmitsa; Marko M. Mäkelä (Optim. Lett., 2021)

Robust piecewise linear L1-regression via nonsmooth DC optimization. - Adil M. Bagirov; Sona Taheri; Napsu Karmitsa; Nargiz Sultanova; Soodabeh Asadi (Optim. Methods Softw., 2022)

Missing Value Imputation via Clusterwise Linear Regression. - Napsu Karmitsa; Sona Taheri; Adil M. Bagirov; Pauliina Mäkinen (IEEE Trans. Knowl. Data Eng., 2022)

Bundle Enrichment Method for Nonsmooth Difference of Convex Programming Problems. - Manlio Gaudioso; Sona Taheri; Adil M. Bagirov; Napsu Karmitsa (Algorithms, 2023)

Nonsmooth Optimization-Based Hyperparameter-Free Neural Networks for Large-Scale Regression. - Napsu Karmitsa; Sona Taheri; Kaisa Joki; Pauliina Paasivirta; Adil M. Bagirov; Marko M. Mäkelä (Algorithms, 2023)

Stochastic limited memory bundle algorithm for clustering in big data. - Napsu Karmitsa; Ville-Pekka Eronen; Marko M. Mäkelä; Tapio Pahikkala; Antti Airola (Pattern Recognit., 2025)

Clust-Splitter - an Efficient Nonsmooth Optimization-Based Algorithm for Clustering Large Datasets. - Jenni Lampainen; Kaisa Joki; Napsu Karmitsa; Marko M. Mäkelä (CoRR, 2025)

Limited memory bundle DC algorithm for sparse pairwise kernel learning. - Napsu Karmitsa; Kaisa Joki; Antti Airola; Tapio Pahikkala (J. Glob. Optim., 2025)