Experimental Setup The baseline method we consider is the one in (<cite>Barzilay and McKeown, 2001</cite> ) without sentence alignment -as the bug reports are usually of one sentence long. Interestingly, the graph shows that using only one of the scores alone (i.e., Rk-S g and Rk-S c ) does not result in a significantly higher precision than the <cite>baseline approach</cite>.