lab2/HookJeeves.py

@@ -64,10 +64,13 @@ def exploratory_search(f, x, delta, r=lambda x: True):
         f_x_up = f(x_up)
         f_x_down = f(x_down)
 
-        if f_x_up < f_x_new and f_x_up < f_x_down:
+        if not r(x_up) or not r(x_down):
+            print("Ограничение ОДЗ")
+
+        if f_x_up < f_x_new and f_x_up < f_x_down and r(x_up):
             x_new = x_up
             f_x_new = f_x_up
-        elif f_x_down < f_x_new:
+        elif f_x_down < f_x_new and r(x_down):
             x_new = x_down
             f_x_new = f_x_down
 
@@ -80,20 +83,24 @@ def sample_search(f, x1, x2, r=lambda x: True):
     print()
     print("Выполняем поиск по образцу")
     while f(x2) < f(x1):
+        if not r(x2 + (x2 - x1)):
+            print("Ограничение ОДЗ")
+            break
         x2, x1 = x2 + (x2 - x1), x2
     print("Найдена точка", x2, f(x2))
     return x2
 
 
-def f1():
+def example():
-    x0 = [0, 0]
+    x0 = [100, 100]
-    delta0 = [1e6, 1e6, 1e6]
+    delta0 = [10, 10]
     alpha = 2
     epsilon = 1e-4
 
     c = [[1, 1, 1, 1, 1, 1, 1], [1, 1, 1, 1, 1, 1, 1]]
 
-    r = [[-1000, 1000], [-100, 100]]
+    def r(x):
+        return -10000 < x[0] < 10000 and -10000 < x[1] < 10000
 
     def f(x):
         return sum(
@@ -107,51 +114,9 @@ def f1():
     return x, val
 
 
-def f2():
-    x0 = [1, 1]
-    delta0 = [1, 1]
-    alpha = 2
-    epsilon = 1e-6
-
-    def f(x):
-        return x[0] ** 4 + x[1] ** 2 - 4 * x[0] * x[1]
-
-    x, val = hooke_jeeves(f, x0, delta0, epsilon, alpha)
-    return x, val
-
-
-def f3():
-    x0 = [1, 0]
-    delta0 = [1, 1]
-    alpha = 2
-    epsilon = 1e-5
-
-    def f(x):
-        return x[0] * np.exp(x[0]) - (1 + np.exp(x[0])) * np.sin(x[1])
-
-    x, val = hooke_jeeves(f, x0, delta0, epsilon, alpha)
-    return x, val
-
-
-def example():
-    x0 = [-4, -4]
-    delta0 = [1, 1]
-    alpha = 2
-    epsilon = 1e-4
-
-    def f(x):
-        return 8 * (x[0] ** 2) + 4 * x[0] * x[1] + 5 * (x[1] ** 2)
-
-    x, val = hooke_jeeves(f, x0, delta0, epsilon, alpha)
-    return x, val
-
-
 if __name__ == "__main__":
 
-    x, val = f1()
+    x, val = example()
-    # x, val = f2()
-    # x, val = f3()
-    # x, val = example()
 
     print()
     print("=" * 40)