update qaoa_bo.ipynb

Author: PeilinZHENG

docs/source/tutorials/qaoa_bo.ipynb

@@ -411,9 +411,7 @@
     "        self, eval_func, num_params, tr_length, failure_tolerance, device=\"cpu\"\n",
     "    ):\n",
     "        super(TuRBO_optimizer, self).__init__(eval_func, device=device)\n",
-    "        self.batch_size = (\n",
-    "            1  # There is a bug in odbo.run_exp.turbo_design, batch_size can only be 1 right now.\n",
-    "        )\n",
+    "        self.batch_size = 1  # There is a bug in odbo.run_exp.turbo_design, batch_size can only be 1 right now.\n",
     "        self.tr_length = tr_length\n",
     "        self.state = odbo.turbo.TurboState(\n",
     "            dim=num_params,\n",
@@ -641,10 +639,10 @@
     "        # check if we need to switch the searching parameter range.\n",
     "        if self.switch_counter >= frequency:\n",
     "            if self.mode:\n",
-    "                X = (X * 2).clamp(0, 1)\n",
+    "                X = X * 2 - 0.5\n",
     "                self.mode = False  # small\n",
     "            else:\n",
-    "                X = (X / 2).clamp(0, 1)\n",
+    "                X = X / 2 + 0.25\n",
     "                self.mode = True  # large\n",
     "            self.switch_counter = 0\n",
     "\n",