Table 4: Matching email ID(s) across projects.

Project A
(no. of developers)
Project B
(no. of developers)
Mailing list
Name and email Name/email
ID(s) found Links ID(s) found Links

Apache Ant (2469) Apache Hadoop (1260) 24 12 59 43
Apache Ant (2469) Apache Logging (988) 153 77 232 151
Apache Ant (2469) Apache Lucene (1506) 75 38 129 92
Apache Ant (2469) Apache Maven (1886) 198 100 365 254
Apache Hadoop (1260) Apache Logging (988) 2 1 6 3
Apache Hadoop (1260) Apache Lucene (1506) 86 43 121 82
Apache Hadoop (1260) Apache Maven (1886) 34 17 48 29
Apache Logging (988) Apache Lucene (1506) 40 20 68 41
Apache Logging (988) Apache Maven (1886) 96 51 156 103
Apache Lucene (1506) Apache Maven (1886) 92 46 134 81