"Finding Document Similarity Based Mostly on Keywords and Title"

Ender
Ender New Altair Community Member
edited November 5 in Altair RapidMiner
Hi all,
Sorry for the long title, but I could not find an efficient one  :)
I am new to RM, and I am finding document similarities via RM. My sources are the webpages, and I basically read them and compare them.
So far so good; but here is the problem:
I want to determine keywords and title for the documents, and I also want to assign weights to keywords.  When I run the program, title and keywords seem to be '?'. So, is there a way to manually enter the keywords and title for now? For later stages: how can RM automatically get keywords from webpages?