Research Article
Alternate Low-Rank Matrix Approximation in Latent Semantic Analysis
Table 3
The accuracy of the returned documents by the SVD and the TULVD for the ADI collection.
| k | SVD | TULVD | Min Cosine Similarity | Precision (10%) | Precision (50%) | Min Cosine Similarity | Precision (10%) | Precision (50%) |
| 5 | 0.162 | 22.3 | 12.6 | 0.0884 | 21.3 | 14.1 | 10 | 0.119 | 31.1 | 18.6 | 0.0225 | 31.5 | 17.3 | 20 | 0.105 | 39.4 | 23.8 | 0.0101 | 34.7 | 19.9 | 30 | 0.103 | 55.3 | 29.0 | 0.0086 | 46.6 | 20.2 | 40 | 0.102 | 58.9 | 32.8 | 0.0071 | 69.3 | 32.1 | 50 | 0.101 | 73.5 | 33.1 | 0.0034 | 70.2 | 37.6 | 60 | 0.101 | 71.2 | 39.7 | 0.0008 | 65.3 | 37.9 | 70 | 0.100 | 69.2 | 39.3 | 0.0007 | 53.8 | 36.2 | 82 | 0.100 | 50.0 | 41.2 | 0.0003 | 49.3 | 29.1 |
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