DB searches vs. snowballing
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The document compares two methods for conducting systematic literature reviews: database searches and backward snowballing. It aims to determine the extent to which the two methods find the same papers and draw the same conclusions. The results show the initial and final paper sets from each method are different in number and composition, though some papers overlap. While patterns identified allow for similar conclusions, analyzing only unique papers per method reveals slightly different identified patterns. The conclusion is that the two methods are not highly dependent on each other but combining them generates a more comprehensive analysis, though requires more work. More comparison studies are needed to fairly evaluate the methods.
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Mixed methods designs
Definition
A procedure used to collect both qualitative and quantitative data.
This is done due to the fact that it is believed that both types of studies will provided a clearer understanding of what is being studied.
“It consists of merging ,integrating ,linking ,or embedding the two “strands””(Ceswell,2012).
Literature Review SNS
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Increasing adoption of Open Source Software (OSS) in information system engineering has led to the emergence of different OSS business strategies that affect and shape organizations’ business models. In this context, organizational modeling needs to reconcile efficiently OSS adoption strategies with business strategies and models. In this paper, we propose to embed all the knowledge about each OSS adoption strategy into an i* model that can be used in the intentional modeling of the organization. These models describe the consequences of adopting one such strategy or another: which are the business goals that are supported, which are the resources that emerge, etc. To this aim, we first enumerate the main existing OSS adoption strategies, next we formulate an ontology that comprises the activities and resources that characterise
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DB searches vs. snowballing
- 1. Systematic Literature Studies: Database Searches vs. Backward Snowballing
- 2. DB-Searches vs. Snowballing Outline • • • • • Context Research Questions Results Conclusions References 2
- 3. Context DB-Searches vs. Snowballing • Kitchenham and Charters [1] recommend starting with systematic searches in databases using well-defined search strings to find relevant literature. • It is also recommended that snowballing from reference lists of the identified articles should be used in addition. • Webster and Watson [2] propose to use snowballing as the main method to find relevant literature. • backward snowballing (from the reference lists) • forward snowballing (finding citations to the papers) 3
- 4. DB-Searches vs. Snowballing Research Questions • RQ1. To what extent do we find the same research papers using two different review approaches? • RQ2. To what extent do we come to the same conclusions using two different review approaches? 4
- 5. Results DB-Searches vs. Snowballing • RQ1. same papers? The (initial and final) set of papers are different both in the number and the actual papers. Although 27 papers were common. More of the 50% in each study. 5
- 6. Results DB-Searches vs. Snowballing • RQ2. same conclusions? Regardless of the differences in the actual numbers and figures, similar pattern were identified in both studies and hence similar conclusions were drawn. • However, when excluding the same papers from both studies and analyzing only the remaining unique papers of each study the identified patterns seem to be slightly different 6
- 7. DB-Searches vs. Snowballing Conclusions • There is not a high dependency on whether using database searches or snowballing. • It is also quite obvious that the overlap will become larger if combining the two search strategies although the downside being that it generates more work. • More such comparison studies are required to be able to compare the methods fairly. 7
- 8. References DB-Searches vs. Snowballing [1] B. Kitchenham, S. Charters (2007): Guidelines for Performing Systematic Literature Reviews in Software Engineering. Version 2.3, Technical Report, Software Engineering Group, Keele University and Department of Computer Science, University of Durham. [2] J. Webster, R. T. Watson (2002.): Analyzing the Past to Prepare for the Future: Writing a Literature Review. MIS Quarterly 26(2): xiii-xxiii. 8