Firstly, hello from Sydney, Australia. It is terrific to have found your forum, it looks great and full of strong contributions. I'd be much obliged if anyone out there can help me with this problem... I am trying to combine two probability estimates for an event. I have many thousands of events to test against. Each of the two estimates is derived from two views of the same process (call one subjective, the other objective). When tested, both have predictive merit. However I expect there is some crossover, and thus if I can combine correctly I expect they should "inform" each other to produce a stronger single estimate. I am looking for a way to a) estimate how correct each is overall; and b) then combine them in these proportions to (hopefully) produce a more robust single probability estimate. Any help on this would be greatly appreciated. Kind regards, Bbita (Though I have perused the board a little since I found it, I have not seen a similar query. My apologies if this has already been dealt with).