Advances in Software Engineering

Research Article

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

Table 7

Netbeans 3.2. Spearman correlation among metrics.
Num. issue Num. bug LOCS WMC RFC LCOM CBO Fan-in Fan-out Reach efficiency Effsize Closeness Dwreach Infocentrality Size Ties Nweakcomp
Numbug 98%**————————————————
LOCS 47%** 46%**%**——————————————
WMC 44%** 42%** 87%**——————————————
RFC44%**42%**87%** 95%**—————————————
LCOM 41%** 39%** 70%** 87%** 81%**————————————
CBO 33%** 32%** 58%** 53%** 71%** 43%**———————————
Fanin 13%** 12%** 19%** 34%** 30%** 31%** 13%**——————————
Fanout 45%** 44%** 65%** 58%** 68%** 54%**71%** 3%**—————————
Reachآ ­efficiency 17%** 16%** 18%** 14%**18%**15%** 18%** −19%** 49%** ————————
Effsize38%**36%**52%**58%** 62%**54%**53%** 56%**70%**20%**———————
Closeness38%**36%**43%** 43%**46%**43%**38%**14%**70%**73%** 61%**——————
Dwreach37%**35%** 45%** 45%** 48%** 44%** 40%** 17%** 73%**77%** 66%** 94%** —————
Infocentrality−26%**−25%**−30%**−23%**−23%**−24%**−14%** 9%**−38%**−37%**−26%**−54%**−60%**————
Size 39%** 38%** 55%** 61%** 65%** 57%** 56%** 57%** 73%** 23%** 98%** 64%** 69%**−28%**———
Ties 39%** 37%** 54%** 57%** 60%** 53%** 50%** 48%** 65%** 10%** 83%** 52%** 57%** −47%** 88%**——
Nweakcomp−26%** −25%** −37%**−32%** −32%** −31%** −23%**−16%** −30%** 12%** −25%** −17%** −20%** 60%** −36%** −63%**—
Brokerage 38%** 37%** 53%**59%** 63%** 55%** 54%** 56%** 71%** 21%** 10%** 62%** 67%** −28%** 99%** 84%** −30%**
**Correlation is significant at the 0.01 level. *Correlation is significant at the 0.05 level.