scholarly journals Temporal Patterns of Software Evolution Defects: A Comparative Analysis of Open Source and Closed Source Projects

2011 ◽  
Vol 04 (08) ◽  
pp. 497-511 ◽  
Author(s):  
Uzma Raja ◽  
Joanne Elaine Hale ◽  
David Peter Hale
Keyword(s):  
Comparative Analysis ◽  
Open Source ◽  
Software Evolution ◽  
Temporal Patterns ◽  
Closed Source

scholarly journals Internal Quality Evolution of Open-Source Software Systems

2021 ◽  
Vol 11 (12) ◽  
pp. 5690
Author(s):  
Mamdouh Alenezi
Keyword(s):  
Open Source ◽  
Open Source Software ◽  
Software Evolution ◽  
Quality Metrics ◽  
Internal Quality ◽  
Software Systems ◽  
Software Metric ◽  
Significant Difference ◽  
The Relationship

The evolution of software is necessary for the success of software systems. Studying the evolution of software and understanding it is a vocal topic of study in software engineering. One of the primary concepts of software evolution is that the internal quality of a software system declines when it evolves. In this paper, the method of evolution of the internal quality of object-oriented open-source software systems has been examined by applying a software metric approach. More specifically, we analyze how software systems evolve over versions regarding size and the relationship between size and different internal quality metrics. The results and observations of this research include: (i) there is a significant difference between different systems concerning the LOC variable (ii) there is a significant correlation between all pairwise comparisons of internal quality metrics, and (iii) the effect of complexity and inheritance on the LOC was positive and significant, while the effect of Coupling and Cohesion was not significant.

Comparative analysis on flow over cylinder between commercial code and open source algorithm

2017 ◽  
Author(s):  
Zulaikha Asyiqin Nur Azri ◽  
Ishkrizat Taib ◽  
Azmahani Sadikin ◽  
Muhammad Sufyan Amir Paisal ◽  
Akmal Nizam Mohammed ◽  
...  
Keyword(s):  
Comparative Analysis ◽  
Open Source ◽  
Commercial Code ◽  
Flow Over Cylinder

Converting Raw Accelerometer Data to Activity Counts Using Open-Source Code: Implementing a MATLAB Code in Python and R, and Comparing the Results to ActiLife

2021 ◽  
pp. 1-7
Author(s):  
Ruben Brondeel ◽  
Yan Kestens ◽  
Javad Rahimipour Anaraki ◽  
Kevin Stanley ◽  
Benoit Thierry ◽  
...  
Keyword(s):  
Open Source ◽  
Pearson Correlation ◽  
Vertical Axis ◽  
Accelerometer Data ◽  
Accelerometer Sensor ◽  
Interclass Correlation ◽  
Acceleration Data ◽  
The Right ◽  
Pearson Correlations ◽  
Closed Source

Background: Closed-source software for processing and analyzing accelerometer data provides little to no information about the algorithms used to transform acceleration data into physical activity indicators. Recently, an algorithm was developed in MATLAB that replicates the frequently used proprietary ActiLife activity counts. The aim of this software profile was (a) to translate the MATLAB algorithm into R and Python and (b) to test the accuracy of the algorithm on free-living data. Methods: As part of the INTErventions, Research, and Action in Cities Team, data were collected from 86 participants in Victoria (Canada). The participants were asked to wear an integrated global positioning system and accelerometer sensor (SenseDoc) for 10 days on the right hip. Raw accelerometer data were processed in ActiLife, MATLAB, R, and Python and compared using Pearson correlation, interclass correlation, and visual inspection. Results: Data were collected for a combined 749 valid days (>10 hr wear time). MATLAB, Python, and R counts per minute on the vertical axis had Pearson correlations with the ActiLife counts per minute of .998, .998, and .999, respectively. All three algorithms overestimated ActiLife counts per minute, some by up to 2.8%. Conclusions: A MATLAB algorithm for deriving ActiLife counts was implemented in R and Python. The different implementations provide similar results to ActiLife counts produced in the closed source software and can, for all practical purposes, be used interchangeably. This opens up possibilities to comparing studies using similar accelerometers from different suppliers, and to using free, open-source software.

scholarly journals TIMELINESS OF NATIONAL ARMED FORCE PERSONNEL’S TRAINING IN THE FIELD OF BORDER SURVEILLANCE IN THE VIEW OF COOPERATION BETWEEN NATIONAL ARMED FORCES AND STATE BORDER GUARD

2020 ◽  
Vol 3 (8) ◽  
pp. 6-14
Author(s):  
Valentīns Buls ◽  
Oļegs Ignatjevs
Keyword(s):  
Comparative Analysis ◽  
Open Source ◽  
Terrorist Attack ◽  
Armed Forces ◽  
Current Paper ◽  
Legal Basis ◽  
French Government ◽  
Short Summary ◽  
Close Cooperation ◽  
Border Surveillance

In the view of modern tendencies, the cooperation between state armed institutions is extremely crucial. As an example could be mentioned the reaction of French government on the terrorist attack in Paris in the year 2015 – both, army and police, in close cooperation made a contribution solving this challenge. In the scale of Latvia the cooperation between National Armed Forces and State Border Guard could solve such problems like lack of personnel and equipment in State Border Guard. The aim of the current paper is to give insight in such themes as legal basis of the mentioned cooperation, the possibilities of involving National Armed Forces personnel in border surveillance, the possibilities of National Armed Forces personnel’s training in the field of border surveillance and possibilities for development of such training and make short summary in these topics. This was done by methods of analysis, open source research and comparative analysis. Among other conclusions, authors of the current paper draw a conclusion that cooperation between National Armed Forces and State Border Guard is effective but the possibilities of National Armed Forces personnel’s training should be improved in the way mentioned in the paper.

scholarly journals Own system of intelligent building in comparison with an open - source solution

2019 ◽  
Vol 12 ◽  
pp. 232-239
Author(s):  
Cezary Kryczka
Keyword(s):  
Comparative Analysis ◽  
Open Source ◽  
Automation System ◽  
Home Automation ◽  
Intelligent Building ◽  
Building System ◽  
Home Automation System ◽  
Open Source Systems ◽  
Free Open Source

This article is an attempt to answer the question whether and under what conditions it is beneficial to develop an own intelligent building system, when many free open source systems are available. The publication presents the characteristics of author's own home automation system - sHome, as well as the open-source system - Domoticz, in a configuration that is as close to the functionality of the author's system as possible. The work ends with a comparative analysis of the systems and conclusions from the analysis.

Applicability of Lehman Laws on Open Source Evolution

2015 ◽  
pp. 199-224
Author(s):  
Nisha Ratti ◽  
Parminder Kaur
Keyword(s):  
Open Source ◽  
Real World ◽  
Software Maintenance ◽  
Software Evolution ◽  
Object Oriented ◽  
User Requirements ◽  
Continuous Change ◽  
Essential Characteristic ◽  
Time Period ◽  
Object Oriented Metrics

Software evolution is the essential characteristic of the real world software as the user requirements changes software needs to change otherwise it becomes less useful. In order to be used for longer time period, software needs to evolve. The software evolution can be a result of software maintenance. In this chapter, a study has been conducted on 10 versions of GLE (Graphics Layout Engine) and FGS (Flight Gear Simulator) evolved over the period of eight years. An effort is made to find the applicability of Lehman Laws on different releases of two softwares developed in C++ using Object Oriented metrics. The laws of continuous change, growth and complexity are found applicable according to data collected.

The Usage of R Programming in Finance and Banking Research

2019 ◽  
pp. 34-47
Author(s):  
Ceyhun Ozgur ◽  
Sanjeev Jha ◽  
Bennie B. Myer-Tyson ◽  
David Booth
Keyword(s):  
Operating System ◽  
Comparative Analysis ◽  
Open Source ◽  
Comparative Evaluation ◽  
Statistical Analyses ◽  
User Input ◽  
R Programming ◽  
Business Structures ◽  
Standard Software ◽  
Input Code

R has grown tremendously over the years in terms of number of users and capability with the development of hundreds of packages. In this chapter, the authors investigate the usage of R in finance and banking areas. They begin with a comparative analysis of R with other computing software like SAS and Python. Then they discuss the reasons for the growth of R's usage in financial sector. They end with a comparative evaluation of Python and R's strengths and weaknesses in a classroom. R is software designed to run statistical analyses and output graphics by user-input code. It can run on virtually any operating system and is open source. This makes the software highly appealing, as it is able to keep up with the demands of a growing number of varied business structures. Standard software has been SAS and Python; however, a growing number of jobs are posted looking for experience using R in the data analytics field.

Dynamical Simulation Models of the Open Source Development Process

2008 ◽  
pp. 698-721
Author(s):  
I. P. Antoniades ◽  
I. Samoladas ◽  
I. Stamelos ◽  
L. Angelis
Keyword(s):  
Open Source ◽  
General Framework ◽  
Development Process ◽  
Simulation Models ◽  
Real Data ◽  
Simulation Methods ◽  
Dynamical Simulation ◽  
Closed Source ◽  
Free Open Source ◽  
Open Source Development

This chapter will discuss attempts to produce formal mathematical models for dynamical simulation of the development process of Free/Open Source Software (F/OSS) projects. First, a brief overview for simulation methods of closed source software development is given. Then, based on empirical facts reported in F/OSS case studies, we describe a general framework for F/OSS dynamical simulation models and discuss its similarities and differences to closed source software simulation. A specific F/OSS simulation model is introduced. The model is applied to the Apache project and to the gtk+ module of the GNOME project, and simulation outputs are compared to real data. The potential of formal F/OSS simulation models to turn into practical tools used by F/OSS coordinators to predict key project factors is demonstrated. Finally, issues for further research and efforts for improvement of this first-attempt model are discussed.

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