%0 Book Section %B Open Source Software: Mobile Open Source Technologies %D 2014 %T Does Contributor Characteristics Influence Future Participation? A Case Study on Google Chromium Issue Tracking System %A Rastogi, Ayushi %A Sureka, Ashish %E Corral, Luis %E Sillitti, Alberto %E Succi, Giancarlo %E Vlasenko, Jelena %E Wasserman, AnthonyI. %X Understanding and measuring factors influencing future participation is relevant to organizations. This information is useful for planning and strategic decision-making. In this work, we measure contributor characteristics and compute attrition to investigate their relationship by mining Issue Tracking System. We conduct experiments on four year data extracted from Google Chromium Issue Tracking System. Experimental results show that the likelihood of future participation increases with increase in relevance of role in project and level of participation in previous time-interval. %B Open Source Software: Mobile Open Source Technologies %S IFIP Advances in Information and Communication Technology %I Springer Berlin Heidelberg %V 427 %P 164-167 %@ 978-3-642-55127-7 %U http://dx.doi.org/10.1007/978-3-642-55128-4_22 %R 10.1007/978-3-642-55128-4_22 %0 Book %B 10th IFIP WG 2.13 International Conference on Open Source Systems, OSS 2014, San José, Costa Rica, May 6-9, 2014. Proceedings %D 2014 %T Drawing the Big Picture: Temporal Visualization of Dynamic Collaboration Graphs of OSS Software Forks %A Amir Azarbakht %A Jensen, Carlos %E Corral, Luis %E Sillitti, Alberto %E Succi, Giancarlo %E Vlasenko, Jelena %E Wasserman, Anthony I. %X How can we understand FOSS collaboration better? Can social issues that emerge be identified and addressed as they happen? Can the community heal itself, become more transparent and inclusive, and promote diversity? We propose a technique to address these issues by quantitative analysis and temporal visualization of social dynamics in FOSS communities. We used social network analysis metrics to identify growth patterns and unhealthy dynamics; This gives the community a heads-up when they can still take action to ensure the sustainability of the project. %B 10th IFIP WG 2.13 International Conference on Open Source Systems, OSS 2014, San José, Costa Rica, May 6-9, 2014. Proceedings %I Springer Berlin Heidelberg %C Berlin, Heidelberg %V 427 %P 41 - 50 %@ 978-3-642-55128-4 %R 10.1007/978-3-642-55128-4_5 %0 Book %B IFIP Advances in Information and Communication TechnologyOpen Source Software: Quality Verification %D 2013 %T A Dual Model of Open Source License Growth %A Hofmann, Gottfried %A Dirk Riehle %A Carsten Kolassa %A Mauerer, Wolfgang %E Petrinja, Etiel %E Succi, Giancarlo %E Ioini, Nabil %E Sillitti, Alberto %K ohloh %X Every open source project needs to decide on an open source license. This decision is of high economic relevance: Just which license is the best one to help the project grow and attract a community? The most common question is: Should the project choose a restrictive (reciprocal) license or a more permissive one? As an important step towards answering this question, this paper analyses actual license choice and correlated project growth from ten years of open source projects. It provides closed analytical models and finds that around 2001 a reversal in license choice occurred from restrictive towards permissive licenses. %B IFIP Advances in Information and Communication TechnologyOpen Source Software: Quality Verification %I Springer Berlin Heidelberg %C Berlin, Heidelberg %V 404 %P 245 - 256 %@ 978-3-642-38928-3 %R 10.1007/978-3-642-38928-3_18 %> https://flosshub.org/sites/flosshub.org/files/oss2013.hofmann.pdf %0 Conference Paper %B OSS2005: Open Source Systems %D 2005 %T Defining the Total Cost of Ownership for the Transition to Open Source Systems %A Russo, Barbara %A Braghin, Chiara %A Gasperi, Paolo %A Sillitti, Alberto %A Succi, Giancarlo %X This paper provides a a framework to evaluate the transition to a OSS software solution in terms of returns and losses in the context of Public Administrations. The ultimate goal of the framework is to identify costs that are not easy to trace or that are not usually collected like user acceptance. The framework has been conducted using a Total Cost of Ownership approach, which is the most frequently used model to conduct cost comparisons between two or more IT systems. The study further implements the Goal Question Metric paradigm to identify the cost metrics. The framework relies various methods to collect the data, including questionnaires with end-users, qualitative interviews with IT-managers and company balance sheets. An example of framework's use is provided. %B OSS2005: Open Source Systems %P 108-112 %U http://pascal.case.unibz.it/handle/2038/774