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Feature ablation analysis
| Feature(s) | Mean Absolute Error (MAE) | |
|---|---|---|
| Training | Testing | |
| + Bag-of-Words | −0.1517 | −0.0611 |
| + Bag-of-Bigrams | −0.7748 | +4.2203 |
| + Doc2Vec | −0.5167 | −5.8393 |
| + Bag-of-Concepts | −2.6129 | −2.9746 |
|
| ||
| Hybrid Model | 80.4026 | 84.0963 |
|
| ||
| −ICD-9 | −0.6078 | −0.1435 |
| −Axis V | −0.4892 | −0.0190 |
| −Age | −0.6793 | −0.4390 |
| −Lexical | −0.9280 | −1.0341 |
| −UMLS Hierarchy | −1.9248 | −0.9224 |
