https://www.vjol.info.vn/index.php/otn1/issue/feedTạp chí Khoa học - Trường Đại học Thủ đô Hà Nội: Khoa học Tự nhiên và Công nghệ2023-08-10T06:37:37+07:00Đặng Văn Soadvsoa@hnmu.edu.vnOpen Journal Systems<p><strong>Tạp chí của Trường Đại học Thủ đô Hà Nội</strong></p>https://www.vjol.info.vn/index.php/otn1/article/view/82439NOVEL INCREMENTAL ALGORITHMS FOR ATTRIBUTE REDUCTION FROM DYNAMIC DECISION TABLES WHEN ADDING OBJECT S2023-08-10T06:33:34+07:00Ho Thi Phuong, Truong Duc Phuonghtphuong@ttn.edu.vn<p><span class="fontstyle0">In recent years, attribute reduction methods following fuzzy rough set approach<br>have attracted the attention of researchers because they improve the accuracy of the<br>classification model. However, most of the proposed methods are performed on the unchanged<br>decision table. In this paper, we build an incremental algorithm to find the approximate reduct<br>according to the combined filter-wrapper approach. Experimental results on a number of<br>sample datasets show that the proposed incremental algorithm is more efficient than some<br>other incremental algorithms following the filter approach in terms of the number of reductive<br>set attributes and classification accuracy.<br></span></p>2023-08-10T06:29:25+07:00Bản quyền (c) 2022 Tạp chí Khoa học - Trường Đại học Thủ đô Hà Nội: Khoa học Tự nhiên và Công nghệhttps://www.vjol.info.vn/index.php/otn1/article/view/82440DESIGN SOME GRADE 6 MATH TESTS TO ASSESS THE DEVELOPMENT OF MATHEMATICAL COMPETENCIES2023-08-10T06:33:37+07:00Nguyen Van Anh, Le Thi Van Dung, Tran Anh Phuong, Nguyen Thi Hongnthong@daihocthudo.edu.vn<p><span class="fontstyle0">In this article, we study the innovations in testing and assessing learning and<br>educational outcomes in the direction of developing students' qualities and competencies<br>according to the 2018 general education program. From that, we design the regular and<br>periodical test in the direction of developing qualities and competencies for 6th grade students<br>according to the new general education program. In each test, we have developed test<br>specifications, matrix of questions, and grading instructions.<br></span></p>2023-08-10T06:33:16+07:00Bản quyền (c) 2022 Tạp chí Khoa học - Trường Đại học Thủ đô Hà Nội: Khoa học Tự nhiên và Công nghệhttps://www.vjol.info.vn/index.php/otn1/article/view/82442SOME REAL PROBLEMS AND APPLICATION OF THE GREATEST COMMON DIVISOR, THE LEAST COMMON MULTIPLE2023-08-10T06:37:37+07:00Hoang Minh Giang, Nguyen Thi Thu Hoa, Nguyen Thi Hongnthong@daihocthudo.edu.vn<p><span class="fontstyle0">One of the contemporary learning and teaching orientations in the general<br>education curriculum in 2018 is to connect math to everyday lives and focus on applying<br>mathematics concepts to solve real-world issues. As a result, we studied a variety of practical<br>problems involving the greatest common divisor and least common multiple. Furthermore, we<br>analyzed typical application problems and the RSA algorithm in cryptography. In particular,<br>we came up with real-life problems involving the greatest common divisor and least common<br>multiple and implemented the RSA algorithm in Maple.<br></span></p>2023-08-10T00:00:00+07:00Bản quyền (c) 2022 Tạp chí Khoa học - Trường Đại học Thủ đô Hà Nội: Khoa học Tự nhiên và Công nghệ