```json
{
	"no": ["no"],
	"yes": ["yes"]
}
```
Based on prior knowledge, the presence of diabetes mellitus (endocr_01) in the patient's medical history is not a direct indicator of chronic heart failure. Therefore, the values for feature endocr_01 do not provide specific insights regarding the target class "yes" for chronic heart failure. The only relevant value in this case is "no" indicating the absence of diabetes mellitus.