add README

Author: milkcoffeen

dashboard/preferential-optimization-picture/README.md

@@ -0,0 +1,19 @@
+# How to Run Preferential Optimization Image
+
+First, ensure the necessary packages are installed by executing the following command in your terminal:
+
+```bash
+$ pip install "optuna>=3.3.0" "optuna-dashboard[preferential]>=0.13.0b1" pillow
+```
+
+Next, execute the Python script.
+
+```bash
+$ python generator.py
+```
+
+Then, launch Optuna Dashboard in a separate process using the following command.
+
+```bash
+optuna-dashboard sqlite:///example.db --artifact-dir ./artifact
+```