请高手指教，这题是什么意思，怎么解?拜谢！！

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发表于 2012-7-18 20:36 |只看该作者 |倒序浏览

|招呼Ta 关注Ta

Suppose U is set of objects, E is a set of {0,1}-valued parameters

for describing objects in U.  For any u in U,  define an additive  utility

function f as follows:

                                 f (u )    e （u  ）, （对e属于E，e(u)求和）
                                            
                                          e E

where    e(u )    0,1.  u  is called an  optimal  solution if it is one of the

maximum       points  of  function    f with respect to normal order. For

certain reasons, some values are missing. It costs if we want to find

out what these values are. We assume that we know nothing about

the probability of these values being 0 or 1. So my questions are:

(1.) Which unknown value should we figure out firstly if we want to

      find at least one optimal solution?

zan

function, one, solution, nothing, objects