1 files changed, 31 insertions, 0 deletions
diff --git a/nlp/demo.py b/nlp/demo.py
new file mode 100644
index 0000000..9eb7154
--- /dev/null
+++ b/nlp/demo.py
@@ -0,0 +1,31 @@
+from scipy.optimize import minimize, LinearConstraint
+import numpy as np
+
+
+def test1():
+    fun = lambda x: x**2 + 2*x - 3
+    x0 = 1
+    res = minimize(fun, [x0], bounds=[[0, None]], )
+    print(res)
+
+
+def test2():
+    fun = lambda x: (x[0]-2)**2 + 4*(x[1]-1)**2
+    x0 = [0, 0]
+    cons = ({'type': 'ineq', 'fun': lambda x: 2 - x[0] - 2*x[1]})
+    res = minimize(fun, np.asarray(x0),
+                   method='slsqp',
+                   constraints=cons, options={'disp': True})
+    print(res)
+
+
+def test3():
+    fun = lambda x: -x[0]**2*x[1]
+    x0 = np.asarray([0, 0])
+    cons = ({'type': 'eq', 'fun': lambda x: x[0]**2+x[1]**2-1})
+    res = minimize(fun, x0, constraints=cons, options={'disp': True})
+    print(res)
+
+
+if __name__ == '__main__':
+    test3()