Based on prior knowledge, the Oldpeak feature is measured in depression and is a numeric variable. The value of Oldpeak represents the amount of ST depression induced by exercise relative to rest, which is a commonly used measure in assessing heart diseases.

To analyze the relationship between Oldpeak and the presence of heart disease, we can compare the values of Oldpeak for patients with and without heart disease. Lower values of Oldpeak indicate less ST depression and therefore may suggest a lower likelihood of heart disease, while higher values of Oldpeak may indicate a higher likelihood of heart disease.

To create the dictionary, we will need to identify typical Oldpeak values for each target class ('no' and 'yes'):

For patients without heart disease ('no'):
- 0.0
- 0.5
- 1.0
- 1.5
- 2.0

For patients with heart disease ('yes'):
- 2.5
- 3.0
- 3.5
- 4.0
- 4.5

Based on this analysis, the dictionary can be generated as follows:

```json
{
	"no": [0.0, 0.5, 1.0, 1.5, 2.0],
	"yes": [2.5, 3.0, 3.5, 4.0, 4.5]
}
```