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Comparison of maintainability and flexibility on open source LMS

机译：开源LMS可维护性和灵活性的比较

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This paper compares the Flexibility and Maintainability factors on open source Learning Management System (LMS) Moodle, Atutor, and ILIAS. This comparison is aimed to find out which LMS has the value maintainability and better flexibility in order to be used by agencies to consider implementation of LMS as well as useful for software developers to provide an overview of the capabilities of the source code for the maintenance source code and flexibility of the LMS. Comparison for Maintainability done by measuring the Maintainability Index value in each LMS with tools phpmterics. As for Flexibility, the comparison is done by measuring the value of Modularity and Simplicity. Measurement of modularity is done by looking at the values of the coupling and cohesion, while simplicity is measured by looking at the value of complexity. Measurement results show that Moodle has Maintainability Index of 89.85, Afferent Coupling of 0.54, Efferent Coupling of 1.81, Cohesion of 2.18, and Complexity of 17.26. ATutor has Maintainability Index of 72.95, Afferent Coupling of 0.95, Efferent Coupling of 2.63, Cohesion of 2.47, and Complexity of 16.84. ILIAS has Maintainability Index of 87.29, Afferent Coupling of 1.49, Efferent Coupling of 5.31, Cohesion of 3.45 and Complexity of 18.15. So it can be inferred that the Moodle source code have an easier maintenance opportunity as well as the modified source code compared to the ATutor and ILIAS.
机译：本文比较了开源学习管理系统（LMS）Moodle，actor和Ilias上的灵活性和可维护性因素。这种比较旨在了解哪些LMS具有值可维护性和更好的灵活性，以便被机构使用以考虑实现LMS的实施以及软件开发人员的概述维护源的源代码功能概述LMS的代码和灵活性。通过用工具PHPMTERICS测量每个LMS中的可维护性指标值来实现可维护性的比较。至于灵活性，通过测量模块化和简单性的值来完成比较。通过观察耦合和凝聚力的值来完成模块化的测量，而通过观察复杂性的值来测量简单性。测量结果表明，Moodle具有89.85的可维护性指数，富发感耦合0.54，效应耦合1.81，凝聚力为2.18，复杂性为17.26。接示器具有72.95的可维护性指数，富发感耦合0.95，兴奋剂偶联2.63，2.47的凝聚力，复杂性为16.84。 Ilias具有87.29的可维护性指数，传入耦合为1.49，传出偶联5.31，凝聚力为3.45，复杂性为18.15。因此，可以推断出Moodle源代码具有更简单的维护机会以及与actor和iLias相比的修改源代码。

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