Table 8 The indicators have been analyzed and come to a consistent conclusion. “\(A \xrightarrow {\; +\;}B\)” means A makes a positive impact on B, and “\(A \xrightarrow {\; -\;}~B\)” indicates A has negative influence on B. θ is the threshold for correlation. Generally, a value larger than |θ| indicates a considerable positive or negative effect between two variables
From: Evaluation indicators for open-source software: a review
Study | Conclusion | Correlation Value |
|---|---|---|
Wu et al. (2007) | License \(\xrightarrow {\;-\;}\)Popluarity | 1.031 |
Stewart et al. (2005) | License \(\xrightarrow {\;-\;}\)Popluarity | 3.05 |
Subramaniam et al. (2009) | License \(\xrightarrow {\;-\;}\)Popluarity | -0.070 (|θ|=0.056) |
Stewart et al. (2006) | License \(\xrightarrow {\;-\;}\)Popluarity | 6.620 |
Midha and Palvia (2012) | Language translations\(\xrightarrow {\;+\;}\) Popularity | 0.13 0.12 0.23 |
Ghapanchi and Tavana (2015) | Language translations \(\xrightarrow {\;+\;}\) Popularity | 0.281 0.22 |
Colazo and Fang (2009) | Copyleft \(\xrightarrow {\;+\;}\)Developer number | 0.207 |
Colazo et al. (2005) | Copyleft \(\xrightarrow {\;+\;}\)Developer number | 0.207 |
Colazo and Fang (2009) | Copyleft \(\xrightarrow {\;+\;}\)Project activity | 0.334 |
Colazo et al. (2005) | Copyleft \(\xrightarrow {\;+\;}\)Project activity | 0.302 |
Subramaniam et al. (2009) | Project activity\(\xrightarrow {\;+\;}\)User interest | 0.040 (|θ|=0.000) |
Stewart and Ammeter (2002) | Project activity \(\xrightarrow {\;+\;}\)User interest | 0.264 |
Ghapanchi (2015) | Developer interest \(\xrightarrow {\;+\;}\) User interest | 0.39 |
Subramaniam et al. (2009) | Developer Interest \(\xrightarrow {\;+\;}\) user interest | 0.888 (|θ|=0.010) |
Stewart and Ammeter (2002) | (Nonmarket) Sponsor \(\xrightarrow {\;(+)+\;}\)Popularity | 0.529 |
Stewart (2005) | (Nonmarket) Sponso\(\xrightarrow {\;(+)+\;}\)Popularity | 7.71 |
Stewart et al. (2006) | (Nonmarket) Sponsor \(\xrightarrow {\;(+)+\;}\)popularity | 5.849 (|θ|=1.235) |
Wu et al. (2007) | Sponsor \(\xrightarrow {\;+\;}\) Project Activity | 0.428 |
Stewart et al. (2006) | Sponsor \(\xrightarrow {\;+\;}\)Project activity | 1.827 |
Stewart and Ammeter (2002) | Project status \(\xrightarrow {\;+\;}\) Popularity | 1.011 |
Sen (2006) | Project status\(\xrightarrow {\;+\;}\) Popularity | 0.1234 0.1254 |
Subramaniam et al. (2009) | Project status \(\xrightarrow {\quad +\quad } \) Popularity | 0.304 (|θ|=0.008) |
Wu et al. (2007) | Project age \(\xrightarrow {\;+\;}\) Popularity | 0.761 |
Sen (2006) | Project age \(\xrightarrow {\;+\;}\) Popularity | 0.3941 0.3992 |
Ghapanchi and Tavana (2015) | Project age \(\xrightarrow {\;+\;}\) Popularity | 0.24 0.225 |
Sen (2006) | Unix-like operating system \(\xrightarrow {\;+\;}\)Popularity | 0.4376 0.1289 |
Ghapanchi and Tavana (2015) | Unix-like operating system \(\xrightarrow {\;+\;}\)Popularity | 0.113 0.044 |
Beecher et al. (2008) | Unix-like operating system \(\xrightarrow {\;+\;}\) Developer interest | N.A. |
Subramaniam et al. (2009) | Unix-like operating system \(\xrightarrow {\;+\;}\) Developer interest | 0.389 (|θ|=0.150) |
Chang (2018) | Communication effectiveness\(\xrightarrow {\;+\;}\) Project activity | 0.285 |
Steward et al. (2006) | Communication effectiveness\(\xrightarrow {\;+\;}\) Project activity | 0.34 |
Senyard and Michlmayr (2004) | Communication effectiveness\(\xrightarrow {\;+\;}\) Project activity | N.A. |