Table 5: Matching bug repository ID(s) across projects.

Project A
(no. of developers)
Project B
(no. of developers)
Bug tracking system
Name and email Name/email
ID(s) found Links ID(s) found Links

Apache Ant (3927) Apache Hadoop (1219) 20 10 68 35
Apache Ant (3927) Apache Logging (1131)242 121 363 197
Apache Ant (3927) Apache Lucene (981) 24 12 61 34
Apache Ant (3927) Apache Maven (1577)74 37 261 143
Apache Hadoop (1219) Apache Logging (1131)2 1 19 10
Apache Hadoop (1219) Apache Lucene (981) 44 22 45 23
Apache Hadoop (1219) Apache Maven (1577) 20 10 20 10
Apache Logging (1131) Apache Lucene (981) 4 2 16 8
Apache Logging (1131) Apache Maven (1577) 32 16 98 52
Apache Lucene (981) Apache Maven (1577) 16 8 27 14