t3 and t4 : CanopyDriver

[Paritosh Ranjan]

Hi,

I am not able to find any info on what t3 and t4 parameters are in 
CanopyDriver's run method. Can someone explain these two parameters ( t3 
and t4 )  or point me to a link where it is explained?

PS : In CanopyClustering's explanation I only see t1 and t2 which I 
understand.

Thanks and Regards,
Paritosh Ranjan