ALB and heart failure: The data collected for each sample covers 19 physiological indicators, such as the patient's gender, age, creatinine, albumin, hemoglobin, and survival time, and among them, the gender of the patient, whether the circulatory system has heart failure, whether the digestive system has nausea and vomiting, whether there is edema in the urinary system, whether the endocrine system suffers from diabetic nephropathy, six indicators, such as whether the nervous system suffers from uremic encephalopathy, are binary data, and the other 13 indicators are numerical data [12].