[umls-similarity] running perl module of UMLS similarity

[heena000...@yahoo.com [umls-similarity]]

Hi,

I am trying to use the perl module of the UMLS similarity package.

 Although the web interface is working fine, but the perl interface is giving 
the similarity -1 for all pairs of words.

 Please let me know if there is any specific requirement for the perl module.

 My perl version is v5.20.1

Thanks.