Why do you want to use an old version (lemur 4.9)? Indri 5.6 will run in Windows...
Yes.
Since you downloaded indri5.6.exe, I am assuming that you are using this on a Windows...
Although the parameter file must be in XML format, the file extension is irrelevant....
Although the parameter file must be in XML format, the file extension is irrelevant....
You can create a parameter file containing the paths to the indexes: <parameters>...
Review this page and you will find an example parameter file. http://sourceforge.net/p/lemur/wiki/IndriBuildIndex%20Parameters/...
Create a stopword parameter file with this format: <parameters> <stopper> <word>stopword1</word>...