Thank you very much for providing these lists. I had read few of these and read rest of links which you provided. Sorry but still cant understand trust calculation. There might have or not but could not understand how they calculating.

Thanks for your valuable comment. I know how to search and I have searched, researched and then posted. I have posted it either I could not understand or I have not found the exact match of my question. Still I am confused how it is working.
If anyone can create an account by himself/herself then he/she must know how to search and at the same way I know how to search. I have searched on several method eg: trust rating, trust calculation, computing trust and trust settings. It might be my fault but I could not find out my answer. And not know either I would be able to find out or not.

mdayonliner has 1 negative trust and he has -2 rating score. But you have -1 negative and +4 positive. each 1 has 2 point then you should have 6 postive score. But you have 0. I have seen 1 user who has 2 positive ratings but his score 20. In this case you should have 36 score. But you have 0. This is the question what is the method to calculate this. I think this calculation is not simple as many people think. I am really sorry to both of you (Silent26 and TMAN) that I have created  a post though I am newbie. Thanks again all who has given their valuable comments.