Suppose U is set of objects, E is a set of {0,1}-valued parameters " j! r0 L P& t" R1 A- L1 @$ p
4 d6 }* W+ K M& i" s0 P4 jfor describing objects in U. For any u in U, define an additive utility 7 k+ T& a, x' e/ T# t. u% p. [ H2 Q3 t4 o, B2 c! u
function f as follows: / ?+ ?8 a* E- T O& I* D
0 @! Y* d4 U4 c. F. I
f (u ) e (u ), (对e属于E,e(u)求和)3 c$ q, H. y# W& d, M% X0 Y* Y
+ O, l2 O" q4 _* _+ h
e E * z; d) R# F, S- s6 N! X$ d9 g! g0 @' p& W! S" ]* p) m7 M# U U% {
where e(u ) 0,1. u is called an optimal solution if it is one of the / I& t+ `1 O6 S7 z9 l* U - R. s) [: Y. L2 Imaximum points of function f with respect to normal order. For , e0 {) `' |# v) h% U4 a v |) ?. m& k; S- a3 {* B
certain reasons, some values are missing. It costs if we want to find ; K# w6 K* u) F+ I& D1 k, [8 [/ _
% P1 Q+ h" d7 y, v4 b
out what these values are. We assume that we know nothing about ) o+ W% a m, L/ _% | Z7 I. T
* q5 p6 v. e9 A8 S8 p( A; gthe probability of these values being 0 or 1. So my questions are: 5 e" U( u; P+ L* U) H6 j. L * [" n( i9 r, o+ G$ I( \# o(1.) Which unknown value should we figure out firstly if we want to : N1 K' N" I7 w/ f" e( X # e1 B2 p* ~) l) T* r2 a2 ` find at least one optimal solution?