So my prpblem is that I want to build datamodel based on what user has bought or added to their favorite or rated. You mean I need a table describe all these user behavior. For example, if user buys one item, I guess the user preference is 4 and add into this table?
>No, you need one table (or view if you like) containing all data. If >you can't do this, you could write your own copy of a JDBCDataModel >that can query multiple tables, or, that changes its SQL queries to >use UNION statements. I imagine it will slow down a lot. > >If you mean, can you use a table with preferences with a model that >ignores preferences, sure you can. The extra column is ignored. > >2010/7/19 Young <[email protected]>: >> Hi, >> I have three tables, one is with preference and another two are without >> preference. Does mahout have some algorithm to integret these tables into >> one datamodel? >> >> Thank you
