Is it possible to create one wiki for each different users group in order that:
- each member of one group may edit and see the wiki related to its groups
- may not get access the wiki of other groups?
As you can define access permission for each article, you could do this.
What you cannot do is to define a seperate wiki-startpage for euch group. You could list all the group-wikis on the Startpage. People will only be able to access the wikis, they have access to.
Everytime somebdody creates a new article he will have to set the right properly and you should check the search-function, if any article, the person has no read access to, are displayed anyway.