add cut and split

random.ipynb

@@ -134,12 +134,22 @@
     "功能： 生成[0,1)之间的浮点数，通过size参数来指定维数。\n",
     "说明：\n",
     "size : int or tuple of ints, optional.\n",
-    "Output shape. If the given shape is, e.g., (m, n, k), then m * n * k samples are drawn. Default is None, in which case a single value is returned. "
+    "Output shape. If the given shape is, e.g., (m, n, k), then m * n * k samples are drawn. Default is None, in which case a single value is returned. \n",
+    "\n",
+    "4. numpy.random.rand()\n",
+    "均匀分布\n",
+    "范围 [0, 1)\n",
+    "\n",
+    "5. numpy.random.normal(loc=mu, scale=sigma, size)\n",
+    "正态分布\n",
+    "mu，均值\n",
+    "sigma，标准差\n",
+    "size，数据shape，默认一个值"
    ]
   },
   {
    "cell_type": "code",
-   "execution_count": 21,
+   "execution_count": 25,
    "metadata": {},
    "outputs": [
     {
@@ -148,17 +158,21 @@
      "text": [
       "[0 0 0 0] \n",
       "\n",
-      "[[ 0 -2  0]\n",
-      " [ 1 -1 -1]] \n",
+      "[[ 2  1  0]\n",
+      " [-2  0  0]] \n",
       "\n",
-      "0.0940234518052504 \n",
+      "0.9888926077885405 \n",
       "\n",
-      "[0.58264778] \n",
+      "[0.32897483] \n",
       "\n",
-      "[0.19358132 0.3565561 ] \n",
+      "[0.96680953 0.76946094] \n",
       "\n",
-      "[[0.32759701 0.74016873 0.83999783]\n",
-      " [0.62572959 0.13477642 0.86937912]] \n",
+      "[[0.0936316  0.2776172  0.16938396]\n",
+      " [0.21494328 0.26245945 0.22463559]] \n",
+      "\n",
+      "[0.36292738 0.51118156 0.35250669] \n",
+      "\n",
+      "[[ 0.07101816  0.1111697  -0.89099377]] \n",
       "\n"
      ]
     }
@@ -176,7 +190,13 @@
     "z3 = np.random.random(2)  #生成1×2的数组\n",
     "print(z3,\"\\n\")\n",
     "z4 = np.random.random((2,3))   #生成一个2行3列的数组\n",
-    "print(z4,\"\\n\")"
+    "print(z4,\"\\n\")\n",
+    "\n",
+    "z5 = np.random.rand(3)  # 生成1×3的数组\n",
+    "print(z5,\"\\n\")\n",
+    "\n",
+    "z6 = np.random.normal(0,1,(1,3))\n",
+    "print(z6,\"\\n\")"
    ]
   }
  ],