## 3 Results
### The Classification of the System Evaluation Items  
The system evaluation items are classified according to the types of relationships with each dialogue evaluation. The classification consists of four conditions whether an item is relational or non-relational and whether the relationship is general or individual, based on the characteristics of the subject distributions in Figure 7. The shapes of the distributions in each graph of Figure 7 have one or two peaks. The peak positions indicate the evaluation tendencies of the subject groups that are distributed around the peaks. When there is one peak, the subjects form one group with the same evaluation tendency. When there are two peaks, the subjects form two groups with different evaluation tendencies. When a peak is at 0 or 1 step, this subject group tends to relate the system evaluation to the dialogue evaluation. When a peak is at 2 or more steps, this subject group tends not to relate the two evaluations. Therefore, if one of the two peaks is at 0 or 1 step and the other peak is at 2 or more steps, one subject group tends to relate their evaluations of the system and the dialogue, while the other group tends not to relate them.  
Figure 7: The distribution of the subjects for each number of steps from the dendrograms.  
The classification results of the six evaluation items, except for \"Awkward\" and \"Inhuman\", are shown in Table 3. Items with one peak at 0 or 1 step are classified into the first column. Items with one peak at 2 or more steps are in the fourth column. Items with two peaks, one at 0 or 1 step and the other at 2 or more steps, are classified into the second column. Items with two peaks both at 2 or more steps are classified into the third column. The distribution of subjects on \"Inspiring\" in the \"It listens\" section has a peak at 1 and 2 steps with equal values. It is determined that the peak is at 2 steps because the sum of the number of subjects at 2 or more steps is larger than that at 0 or 1 step. The distribution of subjects on \"Easy to talk to\" in the \"It listens\" section has a peak at 1 and 2 steps with equal value. It is determined that the peak is at 1 step because the sum of the number of subjects at 0 or 1 step is larger than that at 2 or more steps.  
The items in the first column of Table 3 are generally relational items. The subjects formed one group and tended to relate the system evaluations for the items to the dialogue evaluation. The items in the second column are individually relational items. The subjects formed two groups, the evaluation tendencies differed across subjects for the items, and some subjects related the evaluations. The items in the third and fourth columns are non-relational items. In this study, the items in the third column are treated as simply non-relational, along with the items in the fourth column. Although there were two groups of subjects and they might differ in their evaluations for the items in the third column, neither group related them. Since the aim is to investigate how the subjects related the evaluations, how they did not relate them is not addressed. Future research on negative evaluations, such as indifference or negative impacts, could provide additional findings.