http://researchonline.federation.edu.au/vital/access/manager/Index ${session.getAttribute("locale")} 5 A new modified global k-means algorithm for clustering large data sets http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:3555 Wed 28 Apr 2021 12:28:10 AEST ]]> An incremental approach for the construction of a piecewise linear classifier http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:3556 Wed 28 Apr 2021 12:24:03 AEST ]]> Discrete gradient methods http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:14699 Wed 07 Apr 2021 14:02:47 AEST ]]> Final words http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:14698 Wed 07 Apr 2021 14:02:47 AEST ]]> Introduction http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:14697 Wed 07 Apr 2021 14:02:47 AEST ]]> Prediction of gold-bearing localised occurrences from limited exploration data http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:14480 Wed 07 Apr 2021 14:02:34 AEST ]]> Multi-source cyber-attacks detection using machine learning http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:14111 Wed 07 Apr 2021 14:02:11 AEST ]]> An approximate ADMM for solving linearly constrained nonsmooth optimization problems with two blocks of variables http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:13886 Wed 07 Apr 2021 14:01:58 AEST ]]> A difference of convex optimization algorithm for piecewise linear regression http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:13829 Wed 07 Apr 2021 14:01:56 AEST ]]> A sharp augmented Lagrangian-based method in constrained non-convex optimization http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:13828 Wed 07 Apr 2021 14:01:56 AEST ]]> A simulated annealing-based maximum-margin clustering algorithm http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:13810 Wed 07 Apr 2021 14:01:55 AEST ]]> A server side solution for detecting webInject : A machine learning approach http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:13792 Wed 07 Apr 2021 14:01:54 AEST ]]> Double bundle method for finding clarke stationary points in nonsmooth dc programming http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:13377 Wed 07 Apr 2021 14:01:32 AEST ]]> Clustering in large data sets with the limited memory bundle method http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:13303 Wed 07 Apr 2021 14:01:27 AEST ]]> Solving minimax problems : Local smoothing versus global smoothing http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:13274 Wed 07 Apr 2021 14:01:26 AEST ]]> The cutting angle method and its applications http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:13177 Wed 07 Apr 2021 14:01:21 AEST ]]> Minimizing nonsmooth DC functions via successive DC piecewise-affine approximations http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:13056 Wed 07 Apr 2021 14:01:15 AEST ]]> A comparative assessment of models to predict monthly rainfall in Australia http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:13043 Wed 07 Apr 2021 14:01:14 AEST ]]> Nonsmooth DC programming approach to clusterwise linear regression : Optimality conditions and algorithms http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:12991 Wed 07 Apr 2021 14:01:11 AEST ]]> Batch clustering algorithm for big data sets http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:12990 Wed 07 Apr 2021 14:01:11 AEST ]]> A new modification of Kohonen neural network for VQ and clustering problems http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:12378 Wed 07 Apr 2021 14:00:38 AEST ]]> An algorithm for clustering using L1-norm based on hyperbolic smoothing technique http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:12254 Wed 07 Apr 2021 14:00:32 AEST ]]> Optimization based clustering algorithms for authorship analysis of phishing emails http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:12192 Wed 07 Apr 2021 14:00:29 AEST ]]> A proximal bundle method for nonsmooth DC optimization utilizing nonconvex cutting planes http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:11952 Wed 07 Apr 2021 13:57:14 AEST ]]> New diagonal bundle method for clustering problems in large data sets http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:11769 Wed 07 Apr 2021 13:57:02 AEST ]]> Aggregate codifferential method for nonsmooth DC optimization http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:11305 Wed 07 Apr 2021 13:56:39 AEST ]]> CR-Modified SOM to the problem of handwritten digits recognition http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:11276 Wed 07 Apr 2021 13:56:37 AEST ]]> Diagnostic with incomplete nominal/discrete data http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:11264 Wed 07 Apr 2021 13:56:36 AEST ]]> Prediction of monthly rainfall in Victoria, Australia : Clusterwise linear regression approach http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:11231 Wed 07 Apr 2021 13:56:34 AEST ]]> Piecewise linear classifiers based on nonsmooth optimization approaches http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:11230 Wed 07 Apr 2021 13:56:34 AEST ]]> Constrained self organizing maps for data clusters visualization http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:10658 Wed 07 Apr 2021 13:56:00 AEST ]]> Sensitivity of algorithm parameters and objective function scaling in multi-objective optimisation of water distribution systems http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:10656 Wed 07 Apr 2021 13:56:00 AEST ]]> Nonsmooth DC programming approach to the minimum sum-of-squares clustering problems http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:10544 Wed 07 Apr 2021 13:55:52 AEST ]]> Nonsmooth optimization based algorithms in cluster analysis http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:10286 Wed 07 Apr 2021 13:55:38 AEST ]]> Introduction to Nonsmooth Optimization : Theory, practice and software http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:10285 Wed 07 Apr 2021 13:55:38 AEST ]]> Impact of water-quality conditions in source reservoirs on the optimal operation of a regional multiquality water-distribution system http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:10273 Wed 07 Apr 2021 13:55:37 AEST ]]> An incremental piecewise linear classifier based on polyhedral conic separation http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:10254 Wed 07 Apr 2021 13:55:35 AEST ]]> A history of water distribution systems and their optimisation http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:9617 Wed 07 Apr 2021 13:54:52 AEST ]]> Exploration of the trade-offs between water quality and pumping costs in optimal operation of regional multiquality water distribution systems http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:9616 Wed 07 Apr 2021 13:54:52 AEST ]]> Solving DC programs using the cutting angle method http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:9608 Wed 07 Apr 2021 13:54:51 AEST ]]> Nonsmooth optimization algorithm for solving clusterwise linear regression problems http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:9601 Wed 07 Apr 2021 13:54:51 AEST ]]> An incremental clustering algorithm based on hyperbolic smoothing http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:9600 Wed 07 Apr 2021 13:54:51 AEST ]]> Modified self-organising maps with a new topology and initialisation algorithm http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:9298 Wed 07 Apr 2021 13:54:30 AEST ]]> Optimal operation of a multi-quality water distribution system with changing turbidity and salinity levels in source reservoirs http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:7587 Wed 07 Apr 2021 13:47:03 AEST ]]> A heuristic algorithm for solving the minimum sum-of-squares clustering problems http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:7580 Wed 07 Apr 2021 13:47:02 AEST ]]> An algorithm for clusterwise linear regression based on smoothing techniques http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:7515 Wed 07 Apr 2021 13:46:58 AEST ]]> Truncated codifferential method for linearly constrained nonsmooth optimization http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:7206 Wed 07 Apr 2021 13:46:41 AEST ]]> Framework for multi-objective optimisation of the operation of water distribution networks including water quality http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:7050 Wed 07 Apr 2021 13:46:34 AEST ]]> Application of optimisation-based data mining techniques to medical data sets: A comparative analysis http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:7042 Wed 07 Apr 2021 13:46:33 AEST ]]> Pumping costs and water quality in the battlefield of optimal operation of water distribution networks http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:6908 Wed 07 Apr 2021 13:46:27 AEST ]]> Subgradient and bundle methods for nonsmooth optimization http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:6907 Wed 07 Apr 2021 13:46:27 AEST ]]> Capped K-NN Editing in definition lacking environments http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:6730 Wed 07 Apr 2021 13:46:17 AEST ]]> A convolutional recursive modified Self Organizing Map for handwritten digits recognition http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:6492 Wed 07 Apr 2021 13:46:04 AEST ]]> Preface of the special issue OR: Connecting sciences supported by global optimization related to the 25th European conference on operational research (EURO XXV 2012) http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:6470 Wed 07 Apr 2021 13:46:03 AEST ]]> Machine learning algorithms for analysis of DNA data sets http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:5898 Wed 07 Apr 2021 13:45:28 AEST ]]> A novel approach to optimal pump scheduling in water distribution systems http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:5146 Wed 07 Apr 2021 13:44:46 AEST ]]> Comparison of metaheuristic algorithms for pump operation optimization http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:5145 Wed 07 Apr 2021 13:44:46 AEST ]]> Hyperbolic smoothing function method for minimax problems http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:5075 Wed 07 Apr 2021 13:44:41 AEST ]]> Nonsmooth nonconvex optimization approach to clusterwise linear regression problems http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:4951 Wed 07 Apr 2021 13:44:32 AEST ]]> A novel hybrid neural learning algorithm using simulated annealing and quasisecant method http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:4882 Wed 07 Apr 2021 13:44:27 AEST ]]> An algorithm for minimization of pumping costs in water distribution systems using a novel approach to pump scheduling http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:4830 Wed 07 Apr 2021 13:44:22 AEST ]]> Limited memory discrete gradient bundle method for nonsmooth derivative-free optimization http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:4800 Wed 07 Apr 2021 13:44:21 AEST ]]> Subgradient Method for Nonconvex Nonsmooth Optimization http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:4733 Wed 07 Apr 2021 13:44:16 AEST ]]> Comparing different nonsmooth minimization methods and software http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:4550 Wed 07 Apr 2021 13:44:01 AEST ]]> Application of optimisation-based data mining techniques to tobacco control dataset http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:4369 Wed 07 Apr 2021 13:43:49 AEST ]]> Cluster analysis of a tobacco control data set http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:4360 Wed 07 Apr 2021 13:43:48 AEST ]]> A novel piecewise linear classifier based on polyhedral conic and max-min separabilities http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:4279 Wed 07 Apr 2021 13:43:43 AEST ]]> Classification through incremental max-min separability http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:4082 Wed 07 Apr 2021 13:43:25 AEST ]]> Codifferential method for minimizing nonsmooth DC functions http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:4072 Wed 07 Apr 2021 13:43:24 AEST ]]> An efficient algorithm for the incremental construction of a piecewise linear classifier http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:3928 Wed 07 Apr 2021 13:34:58 AEST ]]> Fast modified global k-means algorithm for incremental cluster construction http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:3822 Wed 07 Apr 2021 13:34:52 AEST ]]> A generalized subgradient method with piecewise linear subproblem http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:3807 Wed 07 Apr 2021 13:34:51 AEST ]]> Methods and applications of clusterwise linear regression : a survey and comparison http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:18210 Tue 22 Aug 2023 11:55:58 AEST ]]> Malware variant identification using incremental clustering http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:15320 Tue 19 Oct 2021 15:41:10 AEDT ]]> An incremental nonsmooth optimization algorithm for clustering using L1 and L∞ norms http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:14936 Tue 15 Aug 2023 14:58:19 AEST ]]> Limited Memory Bundle Method for Clusterwise Linear Regression http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:15355 Tue 15 Aug 2023 14:54:28 AEST ]]> Clusterwise support vector linear regression http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:14655 Tue 06 Dec 2022 13:56:02 AEDT ]]> New gene selection algorithm using hypeboxes to improve performance of classifiers http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:14800 Tue 01 Nov 2022 13:31:24 AEDT ]]> Cyberattack triage using incremental clustering for intrusion detection systems http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:14743 Thu 25 Nov 2021 11:38:05 AEDT ]]> Missing value imputation via clusterwise linear regression http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:14773 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%

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Multi-objective optimisation to manage trade-offs in water quality and quantity of complex water resource system http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:18235 Thu 24 Aug 2023 12:52:09 AEST ]]> Nonsmooth optimization-based model and algorithm for semisupervised clustering http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:18965 Thu 22 Feb 2024 10:20:05 AEDT ]]> Comparative analysis of genetic algorithm vs. evolutionary algorithm for hybrid models with discrete gradient method for artificial neural network http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:1366 Thu 20 Jul 2023 16:05:24 AEST ]]> Bundle enrichment method for nonsmooth difference of convex programming problems http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:18816 Thu 18 Jan 2024 11:35:09 AEDT ]]> Minimization of pumping costs in water distribution systems using explicit and implicit pump scheduling http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:7035 Thu 18 Jan 2024 11:12:44 AEDT ]]> A comparative study of unsupervised classification algorithms in multi-sized data sets http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:16243 Thu 14 Jul 2022 10:47:05 AEST ]]> A novel optimization approach towards improving separability of clusters http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:18191 Thu 14 Dec 2023 14:38:07 AEDT ]]> Finding compact and well-separated clusters : clustering using silhouette coefficients http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:17617 Thu 14 Dec 2023 13:40:15 AEDT ]]> Nonsmooth optimization-based hyperparameter-free neural networks for large-scale regression http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:18914 Thu 08 Feb 2024 13:04:53 AEDT ]]> Bundle methods for nonsmooth DC optimization http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:16666 Thu 06 Oct 2022 10:27:56 AEDT ]]> Partial undersampling of imbalanced data for cyber threats detection http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:14391 Thu 02 Dec 2021 16:12:24 AEDT ]]> Robust piecewise linear L 1-regression via nonsmooth DC optimization http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:17890 Thu 01 Jun 2023 13:21:55 AEST ]]> Aggregate subgradient method for nonsmooth DC optimization http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:15031 Mon 21 Mar 2022 14:37:04 AEDT ]]> Improving Naive Bayes classifier using conditional probabilities http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:4877 Mon 15 May 2023 11:17:12 AEST ]]> High activity and high functional connectivity are mutually exclusive in resting state zebrafish and human brains http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:17252 12,000 neurons in the awake resting state forebrain. By classifying their activity (i.e., variances of ΔF/F across time) and functional connectivity into three levels (high, medium, low), we find that highly active neurons have low functional connections and highly connected neurons are of low activity. This finding holds true when neuronal activity and functional connectivity data are classified into five instead of three levels, and in whole brain spontaneous activity datasets. Moreover, such activity-connectivity relationship is not observed in randomly shuffled, noise-added, or simulated datasets, suggesting that it reflects an intrinsic brain network property. Intriguingly, deploying the same analytical tools on functional magnetic resonance imaging (fMRI) data from the resting state human brain, we uncover a similar relationship between activity (signal variance over time) and functional connectivity, that is, regions of high activity are non-overlapping with those of high connectivity. We found a mutually exclusive relationship between high activity (signal variance over time) and high functional connectivity of neurons in zebrafish and human brains. These findings reveal a previously unknown and evolutionarily conserved brain organizational principle, which has implications for understanding disease states and designing artificial neuronal networks.]]> Mon 13 Feb 2023 11:00:07 AEDT ]]> An augmented subgradient method for minimizing nonsmooth DC functions http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:15488 Mon 13 Dec 2021 10:19:54 AEDT ]]> SMGKM : an efficient incremental algorithm for clustering document collections http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:18025 Mon 10 Jul 2023 14:31:03 AEST ]]> DC programming algorithm for clusterwise linear L1 regression http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:11758 Mon 07 Feb 2022 15:31:35 AEDT ]]> Analysis of water quantity and quality trade-offs to inform selective harvesting of inflows in complex water resource systems http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:16315 Mon 01 Aug 2022 11:37:52 AEST ]]> Subgradient smoothing method for nonsmooth nonconvex optimization http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:16309 Mon 01 Aug 2022 11:04:08 AEST ]]>