Feedback on first draft

Thanks for your comments. I addressed those issues. To clarify: 1. Modifying MF Calculations is a section that has subsections: Adding Biases, Additional Input Sources, Temporal Dynamics, Inputs with varying confidence levels. These are not applicable by just fixing one row/column of u and m to be 1. 2. Implicit feedback is from second paper. As you can read in the page, all these modifications are from second paper. 3. Unfortunately, the authors does not explain a lot about v1 and v2. So, this is not that obvious for me too. But, I added a sentence from the paper about that.