# Optimal Cooking Procedure Presentation System for Multiple Recipes and Investigating Its Effect
## 4 System Overview
### Optimal Cooking Procedure Search Algorithm
#### 4.2.2 Overview of the Optimal Cooking Procedure Search Algorithm
\begin{table}
\begin{tabular}{l c c c c c c c} \hline \hline
**ID** & **Unexpected** & **No** & **Cooking as** & **Using** & **Change in** & **Substantial Change** & **Proportion of Substantial** \\  & **Parallelism** & **Washing** & **Usual** & **App** & **Cooking Task** & **in Cooking Time** & **Change in Cooking Time** \\ \hline
4 & ✓ & ✓ & 0.57:13 & 1:06:05 & +5:57 & +2:55 & +5.09\% \\
8 & & & 1:10:16 & 1:06:45 & +1:07 & -4:38 & -6.59\% \\
9 & ✓ & ✓ & 1:19:42 & 1:26:15 & +0:23 & +6:10 & +7.80\% \\
10 & & ✓ & 1:21:11 & 1:41:27 & +16:52 & +3:24 & +4.19\% \\
11 & & & 1:31:24 & 1:29:50 & +5:24 & -6:58 & -7.62\% \\ \hline \hline \end{tabular}
\end{table} 
Table 6: Result of experiment for each user (Group B). \begin{table}
\begin{tabular}{l c c c c c c} \hline \hline
**ID** & **Unexpected** & **No** & **Cooking as** & **Using** & **Change in** & **Substantial Change** & **Proportion of Substantial** \\  & **Parallelism** & **Washing** & **Usual** & **App** & **Cooking Task** & **in Cooking Time** & **Change in Cooking Time** \\ \hline
1 & & & 1:29:30 & 1:18:23 & +2:06 & -13:13 & -14.8\% \\
3 & ✓ & ✓ & 1:04:52 & 1:03:56 & -8:46 & +9:44 & +15.0\% \\
5 & ✓ & & 1:11:56 & 0:54:2 & -20:40 & +3:05 & +4.29\% \\
6 & & & 1:48:08 & 1:48:25 & +10:43 & -10:26 & -9.46\% \\
7 & & & 1:52:32 & 1:35:45 & -6:13 & -10:34 & -9.39\% \\ \hline \hline \end{tabular}
\end{table} 
Table 5: Result of experiment for each user (Group A). Figure 9: Resource usage (ID = 1). #### 5.2.3 Discussion

From Tables 5 and 6, half of the participants (ID = 3, 4, 5, 9, 11) increased the substantial total cooking time. We believe that this is due to the unexpected parallelization and almost no washing tasks when cooking as usual. As the proposed app does not perform unsearchable parallelization or necessary washing, it is considered inappropriate for comparison. On the other hand, using the proposed app properly reduced the substantial total cooking time of half of the experimental participants (ID = 1, 6, 7, 8, 11). This is because our proposed system assigned parallel cooking and washing tasks to the gaps that were not utilized when cooking as usual (Figure 9). We believe that the proposed app is effective because it reduces the actual cooking time by a maximum of 13 min (14.8%) and an average of 9 min (9.5%). From Table 7, the proposed app (1) reduces the level of fatigue, (2) reduces the sense of urgency and pressure, (3) helps to keep on schedule, and (4) makes cooking easier. This can be attributed to the fact that the app gave more time to the participants because they did not have to think about the cooking procedure. We also received positive comments from the participants: \"I did not feel urgency or pressure because I only had to follow the cooking procedure\" and \"I did not feel the stress of having to wash the cooking tools during the cooking process because they were already ready for use when I wanted to use them\". Therefore, the proposed app not only reduces the cooking time but also makes cooking more comfortable. On the other hand, the quality of the dish was higher when it was cooked as usual. This is because the optimal cooking procedure only aims at minimizing the total cooking time, and thus the completion time varies from recipe to recipe. In our experiment, there was a large difference between the time when the participants finished making the miso soup and the time when they finished making all the recipes, and this led to this evaluation because the miso soup became cold. We think this problem can be improved by presenting the cooking procedure that minimizes the total cooking time and has the smallest difference between the completion time of the dish that should be warm and the cooking time. ## 6 Conclusions

The purpose of this study is to create an optimal cooking procedure that minimizes the total cooking time from the start of cooking to the end of cooking, including the washing task.