update tutorial (how to visualize)

tutorial/autofinetune.ipynb

@@ -192,7 +192,18 @@
     "\n",
     "> `--evaluate_choice`: 设置自动搜索超参的评价效果方式，可选fulltrail和modelbased, 默认为fulltrail\n",
     "\n",
-    "> `--tuning_strategy`: 设置自动搜索超参策略，可选hazero和pshe2，默认为hazero\n"
+    "> `--tuning_strategy`: 设置自动搜索超参策略，可选hazero和pshe2，默认为hazero\n",
+    "\n",
+    "\n",
+    "\n",
+    "## 四、可视化\n",
+    "\n",
+    "Auto Finetune API在搜索超参过程中会自动对关键训练指标进行打点，启动程序后执行下面命令\n",
+    "```bash\n",
+    "$ tensorboard --logdir $CKPT_DIR/visualization --host ${HOST_IP} --port ${PORT_NUM}\n",
+    "```\n",
+    "其中${HOST_IP}为本机IP地址，${PORT_NUM}为可用端口号，如本机IP地址为192.168.0.1，端口号8040，用浏览器打开192.168.0.1:8040，\n",
+    "即可看到搜素过程中各超参以及指标的变化情况"
    ]
   },
   {