Table 8 Top 15 n-gram features from feature sets 1 and 2
From: Discovering and identifying New York heart association classification from electronic health records
Rank | Feature set 1: Bag of words | Feature set 2: n-grams |
|---|---|---|
1 | ii | nyha class ii |
2 | iii | class ii |
3 | iv | nyha class iii |
4 | b | class iii |
5 | 428.0dd | nyha class iv |
6 | 428.0db | class iv |
7 | chf | nyha class ii |
8 | congestive | nyha class 2 |
9 | 428.0Â dc | nyha class 3 |
10 | lvad | class |
11 | systolic | chf |
12 | diastolic | class 3 |
13 | 428.0bm | class 2 |
14 | c | congestive heart failure |
15 | stage | nyha class |