㳿 ' , 㳿 . 㳿 , , , .
, .
. , . , , , . , , (admissible). , .
. "" (greedy search). , , (heuristic function).
h(n) =< n >
"" h . h - . "" A Z. , , " ", Z.
h(n) = < n Z>
, . "" 㳿 , , . 㳿, , . , 㳿 "" , , .
. 5.1 "" A Z.
㳿 "" . , .
* 㳿 "" . , , , , , - g(n) - h(n):
f(n) = g(n) h(n)
. 5.2 * A Z.
* f(n). h(n) , , h(n) (overestimates) . , , - . h(n) , f(n) n, 㳿 * . . 5.2 㳿 * Z. h(n).