Re: Item Based Collaborative Filtering Properties Question

2013-09-12 Thread
fficiently large cluster to process the data, would > increasing the values necessarily give me a better recommendation? Which > do you feel would have the largest impact on the quality of the > recommendation? > > Brian > > > On Thu, Sep 12, 2013 at 7:05 AM, 林伟 wrote: >

Re: Item Based Collaborative Filtering Properties Question

2013-09-12 Thread
Hi Brian *& *Miliauskas, I am a data mining engineer form Taobao recommendation team. In past one month, I have read all the code of mahout itemCF. So maybe I can answer this question. We consider the input of itemCF for one user is a item vector, like this (the notation is from Json object model