Research Article

An Empirical Study of Social Networks Metrics in Object-Oriented Software

Table 6

Eclipse 2.1. Spearman correlation among metrics.

Num. issueNum. bug LOCS WMC RFC LCOM CBO Fan-in Fan-out Reach efficiency Effsize Closeness Dwreach Infocentrality Size Ties Nweakcomp

Numbug95%**
LOCS46%** 46%**
WMC38%**38%**84%**
RFC46%**46%**90%**89%**
LCOM34%**34%**66%**85%**74%**
CBO45%**45%**78%**61%**86%**50%**
Fanin8%** 7%**7%**26%**7%**26%**−14%**
Fanout44%**44%** 77%**60%**84%**51%**95%**−15%**
Reachآ ­efficiency16%**16%**29%**17%**35%**13%** 48%**−29%**52%**
Effsize41%**41%**59%**59%**68%** 56%** 63%**45%**66%**21%**
Closeness38%**39%**51%**45%**59%**42%**62%**14%**66%**63%**72%
Dwreach40%**40%**54%**48%**62%**45%** 66%**15%**70%**68%**76%**96%**
Infocentrality−33%**−34%** −45%** −35%**−48%** −35%**−53%**−2%*−55%**−51%**−59%*−79%**−83%**
Size43%**42%**63%**62%** 71%**58%**66%**46%**69%**22%**98%**72%**76%**−59%**
Ties 42%**42%**64%** 60%**69%**56%**65%** 41%**67%**17%**17%**65%**69%**−65%** 94%**
Nweakcomp−28%**−28%**−48%** −41%** −47%**−37%**−44%**−23%** −44%**−3%**−42%**−31%**−34%**51%**−52%**−71%**
Brokerage42%**42%**61%** 60%**69%**57%**65%**45%** 67%**21%**100%** 73%**76%**−59%**99%**91%**

**Correlation is significant at the 0.01 level. *Correlation is significant at the 0.05 level.