Parallel Systolic LU Factorization for Simplex Updates. - Konstantinos G. Margaritis; David J. Evans 001 (ICS, 1987)

Optical processing of banded matrix algorithms using outer product concepts. - David J. Evans 001; Konstantinos G. Margaritis (Parallel Comput., 1988)

Systolic block LU decompositions. - David J. Evans 001; Konstantinos G. Margaritis (Integr., 1989)

Systolic and holographic pyramidical soft-systolic designs for successive matrix powers. - David J. Evans 001; Konstantinos G. Margaritis; Michael P. Bekakos (Parallel Comput., 1989)

Systolic networks for iterative methods for linear equations with cyclic reduction II. - David J. Evans 001; Konstantinos G. Margaritis (Int. J. Comput. Math., 1990)

Systolic designs for eigenvalue-eigenvector computations using matrix powers. - David J. Evans 001; Konstantinos G. Margaritis (Parallel Comput., 1990)

Systolic designs for Bernoulli's method. - Konstantinos G. Margaritis; David J. Evans 001 (Parallel Comput., 1990)

A re-usable systolic array for matrix-vector multiplication. - David J. Evans 001; Konstantinos G. Margaritis (Int. J. Comput. Math., 1991)

Systolic implementation of neural networks for searching sets of properties. - Konstantinos G. Margaritis; David J. Evans 001 (Parallel Comput., 1992)

Artificial Neural Networks and Iterative Linear Algebra Methods. - Konstantinos G. Margaritis; Miltiades Adamopoulos; Konstantinos Goulianas; David J. Evans 001 (Parallel Algorithms Appl., 1994)

On Systolic General System Solution and General Matrix Inversion. - Konstantinos G. Margaritis; David J. Evans 001 (Parallel Algorithms Appl., 1994)

On multi-property set operations using neural networks and systolic arrays. - Konstantinos G. Margaritis; Konstantinos Goulianas; Miltiades Adamopoulos; Constantine Tsouros; David J. Evans 001 (Neural Parallel Sci. Comput., 1995)

Folding Techniques for Systolic Iterations. - Konstantinos G. Margaritis; David J. Evans 001 (Parallel Algorithms Appl., 1995)

On the Systolic Implementation of Associative Memory Artificial Neural Networks. - Konstantinos G. Margaritis (Parallel Comput., 1995)

Systolic array prototyping using the Ptolemy environment. - Theodore H. Kaskalis; Konstantinos G. Margaritis (ICECS, 1996)

Mentor: Internet search advisor and information retrieval system. - Avgoustos A. Tsinakos; Konstantinos G. Margaritis (WebNet, 1996)

A Reconfigurable Systolic Torus for Iterative Matrix Operations. - Theodore Kaskalis; Konstantinos G. Margaritis (Parallel Algorithms Appl., 1996)

On the Use of Librarians Selection Routines in Web Search. - Avgoustos A. Tsinakos; Konstantinos G. Margaritis (WebNet, 1997)

Cognitive Mapping and Certainty Neuron Fuzzy Cognitive Maps. - Athanasios K. Tsadiras; Konstantinos G. Margaritis (Inf. Sci., 1997)

A Vlsi Processor Array for Flexible String Matching. - Konstantinos G. Margaritis; David J. Evans 001 (Parallel Algorithms Appl., 1997)

The MYCIN certainty factor handling function as uninorm operator and its use as a threshold function in artificial neurons. - Athanasios K. Tsadiras; Konstantinos G. Margaritis (Fuzzy Sets Syst., 1998)

Systolic artificial neural network prototyping using ptolemy. - Theodore H. Kaskalis; Konstantinos G. Margaritis (Int. J. Comput. Math., 1998)

Two neuron fuzzy cognitive map dynamics. - Athanasios K. Tsadiras; Konstantinos G. Margaritis (Int. J. Comput. Math., 1998)

An SIMD Implementation of Optimal Linear Associative Memory Neural Networks. - Theodore H. Kaskalis; Konstantinos G. Margaritis (Neural Parallel Sci. Comput., 1998)

Student Modelling Review-What can be learned for Distance Education. - Avgoustos A. Tsinakos; Konstantinos G. Margaritis (WebNet, 1999)

Neural networks for blind separation with unknown number of sources. - Athanasios K. Tsadiras; Konstantinos G. Margaritis (Neurocomputing, 1999)

A multipolation memetic model for the maintenance scheduling problem. - Jason G. Digalakis; Konstantinos G. Margaritis (HERCMA, 2001)

Computer simulators for teaching concurrent Programming. - Areti N. Kaptan; Konstantinos G. Margaritis (HERCMA, 2001)

Computer assisted writing of Greek sign language (GrSL) with sign writing. - T. N. Karaminis; Konstantinos G. Margaritis (HERCMA, 2001)

Tight lower bund for matrix transposition on the reconfigurable mesh. - Theodore Kaskalis; Vassilios Dagdilelis; Georgios Evangelidis 001; Konstantinos G. Margaritis (HERCMA, 2001)

Implementing applications on small robots for educational purposes: Programming the LEGO mindstorms. - Theodore Kaskalis; Vassilios Dagdilelis; Georgios Evangelidis 001; Konstantinos G. Margaritis (HERCMA, 2001)

Implemeting string searching algorithms on a network of workstations using MPI. - Panagiotis D. Michailidis; Konstantinos G. Margaritis (HERCMA, 2001)

On Greeg sign language alphabet character recognition: Using back-propagation neural networks. - Vassilia N. Pashaloudi; Konstantinos G. Margaritis (HERCMA, 2001)

Fuzzy cognitive map as a decision support system for political decisions: The case of "Great Albania". - Athanasios K. Tsadiras; Ilias Kouskouvelis; Konstantinos G. Margaritis (HERCMA, 2001)

Intelligent techniques for web applications: review and educational application. - E. Vozalis; A. Nicolaou; Konstantinos G. Margaritis (HERCMA, 2001)

Parallel Text Searching Application on a Heterogeneous Cluster of Workstations . - Panagiotis D. Michailidis; Konstantinos G. Margaritis (ICPP Workshops, 2001)

Using Fuzzy Cognitive Maps as a Decision Support System for Political Decisions. - Athanasios K. Tsadiras; Ilias Kouskouvelis; Konstantinos G. Margaritis (Panhellenic Conference on Informatics, 2001)

Text Searching on a Heterogeneous Cluster of Workstations. - Panagiotis D. Michailidis; Konstantinos G. Margaritis (PVM/MPI, 2001)

See Yourself IMprove (SYIM): Implementing an educational environment for individual distance education services and student modeling. - Avgoustos A. Tsinakos; Konstantinos G. Margaritis (WebNet, 2001)

On benchmarking functions for genetic algorithms. - Jason G. Digalakis; Konstantinos G. Margaritis (Int. J. Comput. Math., 2001)

On-line string matching algorithms: survey and experimental results. - Panagiotis D. Michailidis; Konstantinos G. Margaritis (Int. J. Comput. Math., 2001)

A study of the two unit certainty neuron fuzzy cognitive map. - Athanasios K. Tsadiras; Konstantinos G. Margaritis (Neural Parallel Sci. Comput., 2001)

A Performance Study of Load Balancing Strategies for Approximate String Matching on an MPI Heterogeneous System Environment. - Panagiotis D. Michailidis; Konstantinos G. Margaritis (PVM/MPI, 2002)

An Experimental Study of Benchmarking Functions for Genetic Algorithms. - Jason G. Digalakis; Konstantinos G. Margaritis (Int. J. Comput. Math., 2002)

On-Line Approximate String Searching Algorithms: Survey and Experimental Results. - Panagiotis D. Michailidis; Konstantinos G. Margaritis (Int. J. Comput. Math., 2002)

A multipopulation cultural algorithm for the electrical generator scheduling problem. - Jason G. Digalakis; Konstantinos G. Margaritis (Math. Comput. Simul., 2002)

Parallel implementations for string matching problem on a cluster of distributed workstations. - Panagiotis D. Michailidis; Konstantinos G. Margaritis (Neural Parallel Sci. Comput., 2002)

Towards an Assistive Tool for Greek Sign Language Communication. - Vassilia N. Pashaloudi; Konstantinos G. Margaritis (ICALT, 2003)

Performance Analysis of Approximate String Searching Implementations for Heterogeneous Computing Platform. - Panagiotis D. Michailidis; Konstantinos G. Margaritis (ICPP Workshops, 2003)

Flexible Approximate String Matching Application on a Heterogeneous Distributed Environment. - Panagiotis D. Michailidis; Konstantinos G. Margaritis (PDPTA, 2003)

Performance evaluation of load balancing strategies for approximate string matching application on an MPI cluster of heterogeneous workstations. - Panagiotis D. Michailidis; Konstantinos G. Margaritis (Future Gener. Comput. Syst., 2003)

Unison-CF: A Multiple-Component, Adaptive Collaborative Filtering System. - Manolis G. Vozalis; Konstantinos G. Margaritis (AH, 2004)

Free and Open Source Software Educational Perspectives. - Dimitrios Vagianos; Evangelos Grigoropoulos; Theodore Kaskalis; Konstantinos G. Margaritis (International Conference on Computational Intelligence, 2004)

Performance comparison of memetic algorithms. - Jason G. Digalakis; Konstantinos G. Margaritis (Appl. Math. Comput., 2004)

On the combination of user-based and item-based collaborative filtering. - Manolis G. Vozalis; Konstantinos G. Margaritis (Int. J. Comput. Math., 2004)

Isolated and Continuous Greek Sign Language Recognition with Hidden Markov Models. - Vassilia N. Pashaloudi; Konstantinos G. Margaritis (Neural Parallel Sci. Comput., 2004)

A support vector approach to the acoustic-to-articulatory mapping. - Asterios Toutios; Konstantinos G. Margaritis (INTERSPEECH, 2005)

Applying SVD on Item-based Filtering. - Manolis G. Vozalis; Konstantinos G. Margaritis (ISDA, 2005)

On the Acoustic-to-Electropalatographic Mapping. - Asterios Toutios; Konstantinos G. Margaritis (NOLISP, 2005)

Performance Analysis of Overheads for Matrix - Vector Multiplication in Cluster Environment. - Panagiotis D. Michailidis; Vasilis Stefanidis 002; Konstantinos G. Margaritis (Panhellenic Conference on Informatics, 2005)

Mapping the Speech Signal onto Electromagnetic Articulography Trajectories Using Support Vector Regression. - Asterios Toutios; Konstantinos G. Margaritis (TSD, 2005)

Parallel text searching applications on a heterogeneous cluster architecture. - Panagiotis D. Michailidis; Konstantinos G. Margaritis (Int. J. Comput. Sci. Eng., 2005)

New Processor Array Architectures for the Longest Common Subsequence Problem. - Panagiotis D. Michailidis; Konstantinos G. Margaritis (J. Supercomput., 2005)

Learning Electropalatograms from Acoustics. - Asterios Toutios; Konstantinos G. Margaritis (ICASSP (1), 2006)

Implementation of a programmable array processor architecture for approximate string matching algorithms on FPGAs. - Panagiotis D. Michailidis; Konstantinos G. Margaritis (IPDPS, 2006)

Multimodal Continuous Recognition System for Greek Sign Language Using Various Grammars. - Vassilia N. Paschaloudi; Konstantinos G. Margaritis (SETN, 2006)

Applying SVD on Generalized Item-based Filtering. - Manolis G. Vozalis; Konstantinos G. Margaritis (Int. J. Comput. Sci. Appl., 2006)

On the enhancement of collaborative filtering by demographic data. - Manolis G. Vozalis; Konstantinos G. Margaritis (Web Intell. Agent Syst., 2006)

Enhancing acoustic-to-EPG mapping with lip position information. - Asterios Toutios; Konstantinos G. Margaritis (INTERSPEECH, 2007)

Multimedia Authoring Tools: The Quest for an Educational Package. - Theodore Kaskalis; Theodore D. Tzidamis; Konstantinos G. Margaritis (J. Educ. Technol. Soc., 2007)

Using SVD and demographic data for the enhancement of generalized Collaborative Filtering. - Manolis G. Vozalis; Konstantinos G. Margaritis (Inf. Sci., 2007)

A programmable array processor architecture for flexible approximate string matching algorithms. - Panagiotis D. Michailidis; Konstantinos G. Margaritis (J. Parallel Distributed Comput., 2007)

Contribution to statistical acoustic-to-EMA mapping. - Asterios Toutios; Konstantinos G. Margaritis (EUSIPCO, 2008)

Improving the Efficiency of Exact Two Dimensional On-Line Pattern Matching Algorithms. - Charalampos S. Kouzinopoulos; Konstantinos G. Margaritis (Panhellenic Conference on Informatics, 2008)

Performance Evaluation of Multiple Approximate String Matching Algorithms Implemented with MPI Paradigm in an Experimental Cluster Environment. - Panagiotis D. Michailidis; Konstantinos G. Margaritis (Panhellenic Conference on Informatics, 2008)

Estimating electropalatographic patterns from the speech signal. - Asterios Toutios; Konstantinos G. Margaritis (Comput. Speech Lang., 2008)

Identifying the effects of SVD and demographic data use on generalized collaborative filtering. - Manolis G. Vozalis; Konstantinos G. Margaritis (Int. J. Comput. Math., 2008)

Processor array architectures for flexible approximate string matching. - Panagiotis D. Michailidis; Konstantinos G. Margaritis (J. Syst. Archit., 2008)

On the Performance of SVD-Based Algorithms for Collaborative Filtering. - Manolis G. Vozalis; Angelos I. Markos; Konstantinos G. Margaritis (BCI, 2009)

A Simple Algorithm Implementation for Pattern-Matching with Bounded Gaps in Genomic and Proteomic Sequences, on the Grid EGEE Platform, using an Intuitive User Interface. - Konstantinos I. Vegoudakis; Konstantinos G. Margaritis; Nicos Maglaveras (AIAI (Workshops), 2009)

A Hybrid Approach for Improving Prediction Coverage of Collaborative Filtering. - Manolis G. Vozalis; Angelos I. Markos; Konstantinos G. Margaritis (AIAI, 2009)

An Experimental Evaluation of a Parallel Genetic Algorithm Using MPI. - Elias Hadjikyriacou; Nikolaos Samaras; Konstantinos G. Margaritis (Panhellenic Conference on Informatics, 2009)

String Matching on a Multicore GPU Using CUDA. - Charalampos S. Kouzinopoulos; Konstantinos G. Margaritis (Panhellenic Conference on Informatics, 2009)

Implementing Parallel LU Factorization with Pipelining on a MultiCore Using OpenMP. - Panagiotis D. Michailidis; Konstantinos G. Margaritis (CSE, 2010)

Collaborative Filtering through SVD-Based and Hierarchical Nonlinear PCA. - Manolis G. Vozalis; Angelos I. Markos; Konstantinos G. Margaritis (ICANN (1), 2010)

An Optimal Scaling Approach to Collaborative Filtering Using Categorical Principal Component Analysis and Neighborhood Formation. - Angelos I. Markos; Manolis G. Vozalis; Konstantinos G. Margaritis (AIAI, 2010)

Survey of Software Environments for Parallel Distributed Processing: Parallel Programming Education on Real Life Target Systems Using Production Oriented Software Tools. - Constantinos T. Delistavrou; Konstantinos G. Margaritis (Panhellenic Conference on Informatics, 2010)

Performance Models for Matrix Computations on Multicore Processors Using OpenMP. - Panagiotis D. Michailidis; Konstantinos G. Margaritis (PDCAT, 2010)

Open Multi Processing (OpenMP) of Gauss-Jordan Method for Solving System of Linear Equations. - Panagiotis D. Michailidis; Konstantinos G. Margaritis (CIT, 2011)

Experimental Results on Multiple Pattern Matching Algorithms for Biological Sequences. - Charalampos S. Kouzinopoulos; Panagiotis D. Michailidis; Konstantinos G. Margaritis (BIOINFORMATICS, 2011)

Towards an Integrated Teaching Environment for Parallel Programming. - Constantinos T. Delistavrou; Konstantinos G. Margaritis (Panhellenic Conference on Informatics, 2011)

A Performance Evaluation of the Preprocessing Phase of Multiple Keyword Matching Algorithms. - Charalampos S. Kouzinopoulos; Konstantinos G. Margaritis (Panhellenic Conference on Informatics, 2011)

Parallel direct methods for solving the system of linear equations with pipelining on a multicore using OpenMP. - Panagiotis D. Michailidis; Konstantinos G. Margaritis (J. Comput. Appl. Math., 2011)

A distributed asynchronous and privacy preserving neural network ensemble selection approach for peer-to-peer data mining. - Yiannis Kokkinos; Konstantinos G. Margaritis (BCI, 2012)

Performance study of matrix computations using multi-core programming tools. - Panagiotis D. Michailidis; Konstantinos G. Margaritis (BCI, 2012)

Performance Study of Parallel Hybrid Multiple Pattern Matching Algorithms for Biological Sequences. - Charalampos S. Kouzinopoulos; Panagiotis D. Michailidis; Konstantinos G. Margaritis (BIOINFORMATICS, 2012)

Efficient Multi-Core Computations in Computational Statistics and Econometrics. - Panagiotis D. Michailidis; Konstantinos G. Margaritis (CSE, 2012)

Computational Comparison of Some Multi-core Programming Tools for Basic Matrix Computations. - Panagiotis D. Michailidis; Konstantinos G. Margaritis (HPCC-ICESS, 2012)

A Parallel Radial Basis Probabilistic Neural Network for Scalable Data Mining in Distributed Memory Machines. - Yiannis Kokkinos; Konstantinos G. Margaritis (ICTAI, 2012)

Multithreaded Implementation of the Slope One Algorithm for Collaborative Filtering. - Efthalia Karydi; Konstantinos G. Margaritis (AIAI (1), 2012)

A Regularization Network Committee Machine of Isolated Regularization Networks for Distributed Privacy Preserving Data Mining. - Yiannis Kokkinos; Konstantinos G. Margaritis (AIAI (1), 2012)

Parallel Implementation of the Wu-Manber Algorithm Using the OpenCL Framework. - Themistoklis K. Pyrgiotis; Charalampos S. Kouzinopoulos; Konstantinos G. Margaritis (AIAI (2), 2012)

Parallel Implementation of the Slope One Algorithm for Collaborative Filtering. - Efthalia Karydi; Konstantinos G. Margaritis (Panhellenic Conference on Informatics, 2012)

Implementing Basic Computational Kernels of Linear Algebra on Multicore. - Panagiotis D. Michailidis; Konstantinos G. Margaritis (Panhellenic Conference on Informatics, 2012)

Parallelism, Localization and Chain Gradient Tuning Combinations for Fast Scalable Probabilistic Neural Networks in Data Mining Applications. - Yiannis Kokkinos; Konstantinos G. Margaritis (SETN, 2012)

An Optimal Scaling Framework for Collaborative Filtering Recommendation Systems. - Manolis G. Vozalis; Angelos I. Markos; Konstantinos G. Margaritis (Int. J. Artif. Intell. Tools, 2012)

Parallel and local learning for fast probabilistic neural networks in scalable data mining. - Yiannis Kokkinos; Konstantinos G. Margaritis (BCI, 2013)

A Parallel and Hierarchical Markovian RBF Neural Network: Preliminary Performance Evaluation. - Yiannis Kokkinos; Konstantinos G. Margaritis (EANN (1), 2013)

Distributed privacy-preserving P2P data mining via probabilistic neural network committee machines. - Yiannis Kokkinos; Konstantinos G. Margaritis (IISA, 2013)

Parallel Computing of Kernel Density Estimation with Different Multi-core Programming Models. - Panagiotis D. Michailidis; Konstantinos G. Margaritis (PDP, 2013)

Exact online two-dimensional pattern matching using multiple pattern matching algorithms. - Charalampos S. Kouzinopoulos; Konstantinos G. Margaritis (ACM J. Exp. Algorithmics, 2013)

Breaking Ties of Plurality Voting in Ensembles of Distributed Neural Network Classifiers Using Soft Max Accumulations. - Yiannis Kokkinos; Konstantinos G. Margaritis (AIAI, 2014)

A distributed privacy-preserving regularization network committee machine of isolated Peer classifiers for P2P data mining. - Yiannis Kokkinos; Konstantinos G. Margaritis (Artif. Intell. Rev., 2014)

Multithreaded Local Learning Regularization Neural Networks for Regression Tasks. - Yiannis Kokkinos; Konstantinos G. Margaritis (EANN, 2015)

A fast progressive local learning regression ensemble of generalized regression neural networks. - Yiannis Kokkinos; Konstantinos G. Margaritis (Panhellenic Conference on Informatics, 2015)

A Hybrid Parallel Implementation of the Aho-Corasick and Wu-Manber Algorithms Using NVIDIA CUDA and MPI Evaluated on a Biological Sequence Database. - Charalampos S. Kouzinopoulos; John-Alexander M. Assael; Themistoklis K. Pyrgiotis; Konstantinos G. Margaritis (Int. J. Artif. Intell. Tools, 2015)

Confidence ratio affinity propagation in ensemble selection of neural network classifiers for distributed privacy-preserving data mining. - Yiannis Kokkinos; Konstantinos G. Margaritis (Neurocomputing, 2015)

Topology and simulations of a Hierarchical Markovian Radial Basis Function Neural Network classifier. - Yiannis Kokkinos; Konstantinos G. Margaritis (Inf. Sci., 2015)

Multiple String Matching on a GPU using CUDAs. - Charalampos S. Kouzinopoulos; Panagiotis D. Michailidis; Konstantinos G. Margaritis (Scalable Comput. Pract. Exp., 2015)

Exemplar Selection via Leave-One-Out Kernel Averaged Gradient Descent and Subtractive Clustering. - Yiannis Kokkinos; Konstantinos G. Margaritis (AIAI, 2016)

Parallel and Distributed Collaborative Filtering: A Survey. - Efthalia Karydi; Konstantinos G. Margaritis (ACM Comput. Surv., 2016)

Timely advances in evolving neural-based systems special issue. - Lazaros S. Iliadis; Konstantinos G. Margaritis; Ilias Maglogiannis (Evol. Syst., 2017)

Local learning regularization networks for localized regression. - Yiannis Kokkinos; Konstantinos G. Margaritis (Neural Comput. Appl., 2017)

Towards automated neural design: an open source, distributed neural architecture research framework. - George Kyriakides; Konstantinos G. Margaritis (PCI, 2018)

Neural Architecture Search with Synchronous Advantage Actor-Critic Methods and Partial Training. - George Kyriakides; Konstantinos G. Margaritis (SETN, 2018)

Big data regression with parallel enhanced and convex incremental extreme learning machines. - Yiannis Kokkinos; Konstantinos G. Margaritis (Comput. Intell., 2018)

Kernel averaged gradient descent subtractive clustering for exemplar selection. - Yiannis Kokkinos; Konstantinos G. Margaritis (Evol. Syst., 2018)

Managing the computational cost of model selection and cross-validation in extreme learning machines via Cholesky, SVD, QR and eigen decompositions. - Yiannis Kokkinos; Konstantinos G. Margaritis (Neurocomputing, 2018)

Simulating parallel scalable probabilistic neural networks via exemplar selection and EM in a ring pipeline. - Yiannis Kokkinos; Konstantinos G. Margaritis (J. Comput. Sci., 2018)

A Fusion Method for Combining Low-Cost IMU/Magnetometer Outputs for Use in Applications on Mobile Devices. - Photis Patonis; Petros Patias; Ilias N. Tziavos; Dimitrios Rossikopoulos; Konstantinos G. Margaritis (Sensors, 2018)

Comparison of Neural Network Optimizers for Relative Ranking Retention Between Neural Architectures. - George Kyriakides; Konstantinos G. Margaritis (AIAI, 2019)

Regularized Evolution for Macro Neural Architecture Search. - George Kyriakides; Konstantinos G. Margaritis (AIAI (2), 2020)

An Introduction to Neural Architecture Search for Convolutional Networks. - George Kyriakides; Konstantinos G. Margaritis (CoRR, 2020)

The effect of reduced training in neural architecture search. - George Kyriakides; Konstantinos G. Margaritis (Neural Comput. Appl., 2020)

NORD: A python framework for Neural Architecture Search. - George Kyriakides; Konstantinos G. Margaritis (Softw. Impacts, 2020)

A Novel Evolutionary Algorithm for Hierarchical Neural Architecture Search. - Aristeidis Chrostoforidis; George Kyriakides; Konstantinos G. Margaritis (CoRR, 2021)

Evaluating Acceleration Techniques for Genetic Neural Architecture Search. - Foteini D. Dervisi; George Kyriakides; Konstantinos G. Margaritis (EANN, 2022)

The Effectiveness of Synchronous Data-parallel Differentiable Architecture Search. - George Kyriakides; Konstantinos G. Margaritis (EANN, 2022)

Evolving graph convolutional networks for neural architecture search. - George Kyriakides; Konstantinos G. Margaritis (Neural Comput. Appl., 2022)