Title	An Intelligent Gold Price Prediction Based on Automated Machine and k-fold Cross Validation Learning
Author	Yakubu S. Baguda and Hani Meateg Al-Jahdali
Citation	Vol. 21  No. 4  pp. 65-74
Keywords	Gold price, automated machine learning, prediction, neural network, cross validation

Title	Experience of Theory and Practice of the Process of Implementing Information Technologies in the Educational Environment
Author	Yaroslav Melnyk, Halyna Drapak, Zoriana Sverdlyk, Maryna Tsilyna, Volodymyr Varenko, , Nelia Boichuk
Citation	Vol. 21  No. 4  pp. 75-79
Keywords	information technology, communication technologies, education system, educational process, оptimization.

Title	Optimization of the Educational Environment Using Information Technologies
Author	Mykhailo Sherman, Yaroslav Martynyshyn, Olena Khlystun, Liubov Chukhrai, Yuliia Kliuchko, Uliana Savkiv
Citation	Vol. 21  No. 4  pp. 80-83
Keywords	information technology, communication technologies, education system, educational process, оptimization.

Title	Care Cost Prediction Model for Orphanage Organizations in Saudi Arabia
Author	Huda N Alhazmi, Alshymaa Alghamdi, Fatimah Alajlani, Samah Abuayied, and Fahd M Aldosari
Citation	Vol. 21  No. 4  pp. 84-92
Keywords	Care cost, Orphanage organizations, Machine learning, Business analytic, Naive Bayes, Simple liner regression, Random Forest