Healthy or Not: A Way to Predict Ecosystem Health in GitHub

With the development of open source community, through the interaction of developers, the collaborative development of software, and the sharing of software tools, the formation of open source software ecosystem has matured. Natural ecosystems provide ecological services on which human beings depend. Maintaining a healthy natural ecosystem is a necessity for the sustainable development of mankind. Similarly, maintaining a healthy ecosystem of open source software is also a prerequisite for the sustainable development of open source communities, such as GitHub. This paper takes GitHub as an example to analyze the health condition of open source ecosystem and, also, it is a research area in Symmetry. Firstly, the paper presents the healthy definition of GitHub open source ecosystem health and, then, according to the main components of natural ecosystem health, the paper proposes the health indicators and health indicators evaluation method. Based on the above, the GitHub ecosystem health prediction method is proposed. By analyzing the projects and data collected in GitHub, it is found that, using the proposed evaluation indicators and method, we can analyze the healthy development trend of the GitHub ecosystem and contribute to the stability of ecosystem development

Empirical research on the evaluation model and method of sustainability of the open source ecosystem

The development of open source brings new thinking and production modes to software engineering and computer science, and establishes a software development method and ecological environment in which groups participate. Regardless of investors, developers, participants, and managers, they are most concerned about whether the Open Source Ecosystem can be sustainable to ensure that the ecosystem they choose will serve users for a long time. Moreover, the most important quality of the software ecosystem is sustainability, and it is also a research area in Symmetry. Therefore, it is significant to assess the sustainability of the Open Source Ecosystem. However, the current measurement of the sustainability of the Open Source Ecosystem lacks universal measurement indicators, as well as a method and a model. Therefore, this paper constructs an Evaluation Indicators System, which consists of three levels: The target level, the guideline level and the evaluation level, and takes openness, stability, activity, and extensibility as measurement indicators. On this basis, a weight calculation method, based on information contribution values and a Sustainability Assessment Model, is proposed. The models and methods are used to analyze the factors affecting the sustainability of Stack Overflow (SO) ecosystem. Through the analysis, we find that every indicator in the SO ecosystem is partaking in different development trends. The development trend of a single indicator does not represent the sustainable development trend of the whole ecosystem. It is necessary to consider all of the indicators to judge that ecosystem’s sustainability. The research on the sustainability of the Open Source Ecosystem is helpful for judging software health, measuring development efficiency and adjusting organizational structure. It also provides a reference for researchers who study the sustainability of software engineering

The cathedral and the bazaar of e-repository development: encouraging community engagement with moving pictures and sound

This paper offers an insight into the development, use and governance of e‐repositories for learning and teaching, illustrated by Eric Raymond's bazaar and cathedral analogies and by a comparison of collection strategies that focus on content coverage or on the needs of users. It addresses in particular the processes that encourage and achieve community engagement. This insight is illustrated by one particular e‐repository, the Education Media On‐Line (EMOL) service. This paper draws analogies between the bazaar approach for open source software development and its possibilities for developing e‐repositories for learning and teaching. It suggests in particular that the development, use and evaluation of online moving pictures and sound objects for learning and teaching can benefit greatly from the community engagement lessons provided by the development, use and evaluation of open source software. Such lessons can be underpinned by experience in the area of learning resource collections, where repositories have been classified as ‘collections‐based’ or ‘user‐based’. Lessons from the open source movement may inform the development of e‐repositories such as EMOL in the future

An evaluation criterion for open source software projects: enhancement process effectiveness

Enhancement process is a key process in which open source software (OSS) project responds to user needs in terms of suggesting and implementing software features, thus the dimension of enhancement effectiveness corresponds nicely to adopters' concern about open source software. This study aims to construct a valid, reliable measurement model for the enhancement process effectiveness in an open source environment. We examine the validity and reliability of an initial list of indicators through two rounds of data collection and analysis from 240 and 750 OSS projects respectively, and come up with a measurement model for the effectiveness of enhancement process comprising four indicators. The implication of this measurement model for practitioners is explained through a numerical example followed by implications for research community.Griffith Sciences, School of Information and Communication TechnologyFull Tex

Exploring Road Incident Data with Heat Maps

This research seeks to determine whether heat mapping is an effective technique for the visual exploration of road incident data. Four software prototypes, which adopted map, treemap and spatial treemap layouts, were developed using open source software. Whilst the visualization process described by Fry (2007) informed the development effort, the evaluation methodology was based on the Nested Process Model (Munzner, 2009). The results of two evaluation methods-a design study and the presentation and discussion of results with domain experts-confirm heat mapping's validity and provide requirements for further software development

Scalable Layer-2/Layer-3 Multistage Switching Architectures for Software Routers

Software routers are becoming an important alternative to proprietary and expensive network devices, because they exploit the economy of scale of the PC market and open-source software. When considering maximum performance in terms of throughput, PC-based routers suffer from limitations stemming from the single PC architecture, e.g., limited bus bandwidth, and high memory access latency. To overcome these limitations, in this paper we present a multistage architecture that combines a layer-2 load-balancer front-end and a layer-3 routing back-end, interconnected by standard Ethernet switches. Both the front-end and the back-end are implemented using standard PCs and open- source software. After describing the architecture, evaluation is performed on a lab test-bed, to show its scalability. While the proposed solution allows to increase performance of PC- based routers, it also allows to distribute packet manipulation functionalities, and to automatically recover from component failures

Fedora Commons 3.0 Versus DSpace 1.5 : Selecting an Enterprise-Grade Repository System for FAO of the United Nations

4th International Conference on Open RepositoriesThis presentation was part of the session : Conference PostersAn extensive evaluation of the Fedora Commons 3.0 and DSpace 1.5 digital document repository systems has been conducted. The evaluation aimed at selecting an open source software package that best satisfies the FAO Open Archive and FAO organizational requirements and the requirements for the storage, dissemination and preservation of documents and bibliographic metadata. Both repository systems were evaluated against thirty-two criteria chosen from nine core categories of requirements: community, security, functionality, integration, modularity, metadata, statistics and reports, preservation, and outputs. These criteria were selected with the merger of the FAODOC and FAO Corporate Document Repository (CDR) into the FAO Open Archive in mind.Food and Agriculture Organization of the United Nation

KRATOS: An Open Source Hardware-Software Platform for Rapid Research in LPWANs

Long-range (LoRa) radio technologies have recently gained momentum in the IoT landscape, allowing low-power communications over distances up to several kilometers. As a result, more and more LoRa networks are being deployed. However, commercially available LoRa devices are expensive and propriety, creating a barrier to entry and possibly slowing down developments and deployments of novel applications. Using open-source hardware and software platforms would allow more developers to test and build intelligent devices resulting in a better overall development ecosystem, lower barriers to entry, and rapid growth in the number of IoT applications. Toward this goal, this paper presents the design, implementation, and evaluation of KRATOS, a low-cost LoRa platform running ContikiOS. Both, our hardware and software designs are released as an open- source to the research community.Comment: Accepted at WiMob 201

Towards an Expert Network in Open Standards and Open Source Software: Research, Expertise and Synergy for Open and Libres Standards and Software (RESOLL) - Version 2.0

CIRANO and its partners are proposing the creation of an Expert Network in Open Standards and Open Source Software (Research, Expertise and Synergy for Open and Libres Standards and Software-RESOLL), which would be a partnership between information technology research centres, government and private user organizations, and businesses working in the field. The network will conduct studies and pilot projects that integrate computer solutions based on open standards and open source software, mainly in e-government fields such as health, education, and scientific research, as well as municipal and quasi-public services and business processes for SMEs. The knowledge, expertise and tools thus developed will be disseminated in a number of ways in order to Quebec and Canadian expertise in the field. RESOLL will also have economic and strategic benefits in that it will put the new economic model to the test in terms of open standards and open source software as well as the reuse of software components by organizations. Background The development of on-line government services and e-business is a priority for governments and businesses of all sizes. It requires considerable spending and significant strategic and organizational changes. Of the many information technology solutions available, the use of open standards and open source software is often brought up by those in the know. Although the Internet and many world-renowned software programs were developed largely from open standards and open source software, there is still a need to study, and above all prove the advantages of this approach for public and quasi-public organizations as well as small to medium-sized businesses. It is essential to identify the needs of these organizations, document best practices, experiment with open source software solutions, evaluate the performance of the software and share the knowledge and know-how of Quebec and Canadian research centres and businesses. RESOLL Goals he main goal of the Expert Network on Open Standards and Open Source Software (RESOLL) is to give people an understanding of the benefits of open standards and open source software and suggest an intelligent and advantageous use of them for public and quasi-public organizations and SMEs. More specifically, the goals are as follows: Document and share government and industry policies, strategies, and practices with respect to the use and development of adaptive software and open source software, defining open standards, open source software, adaptive software, and proprietary software; Adapt these practices and share the different methods with partners and the IT management and development communities in government and business; Establish innovative prototypes and pilot projects in order to test and demonstrate the advantages and features of this approach; Develop the expertise of Quebec and Canadian organizations in the field and create synergy between them and their users; P ublish and share the findings of the work, contribute to the enrichment of a collective software asset base available to public and quasi-public organizations and SMEs while explaining the legal issues involved in the various types of licences and electronic services. Process ESOLL is a multilateral partnership founded on the excellence of partners in their respective field. The RESOLL process will be based on the needs of its partners and users. Once these needs have been identified, research will be conducted to identify available solutions, adapt them through an integration process and alpha test them. This would be followed by a pilot project as required by the organizations and businesses. The pilot project will be implemented and evaluated in order to learn from it and ensure that necessary adjustments are made. Solutions thus obtained will be implemented as electronic services either by the client organization’s IT department or by a business partner. It is up to each organization to select their service provider. RESOLL will encourage the transfer of developed tools and services to partners for complete autonomy. Each project will have its own budget, funded by client partners. RESOLL will use part of its operating budget to start projects and develop a start-up asset base for its activities. Expectations and Deliverables The expectations of RESOLL partners and the team can be expressed by the achievement of their goals. RESOLL’s actions will quickly lead to concrete results. The deliverables will be: Policy and position papers to help partners make clear and informed decisions; Needs analyses and suggested solutions; Software solutions based on open standards and open source software integrated into experimental electronic services; Pilot project experiments that combine strategies, plans, software solutions, project support, evaluation and recommendations; Studies and interpretation documents for different types of licences and software; Collaborative Web site for sharing documents and open source software developed in the context of RESOLL projects or available on the Internet, with comments and explanations; Information and knowledge sharing activities for RESOLL and its partners (conferences, workshops, training, etc.). Partners RESOLL is a multilateral partnership. The partners that have been asked to become involved are: CIRANO, CRIM, RISQ, the governments of Quebec and Canada, Industry Canada, university researchers, Canadian and Quebec software and information technology companies, and not-for-profit user organizations from the software and information technology fields. Budget ESOLL’s master infrastructure budget will make it possible to establish a small coordination team involving part-time resources seconded from their parent organizations. We plan to obtain general financing from government and the businesses involved. The individual projects will provide their own financing. Other Benefits RESOLL will contribute to Quebec’s and Canada’s world leadership by sharing the results of its work. It will contribute to the eventual creation of resources that will enable partner companies to commercialize services based on open source software.Open standard, free software, open software, FOSS, e-government, business process, small and medium enterprises,