TABLE 1.
Computation time: The mean run times are reported in seconds with the standard deviation in parentheses
| Problem | Rank | CCA | TCCA | spTCCA | scTCCA | spscTCCA |
|---|---|---|---|---|---|---|
| Rectangle | 1 | 22.90 (3.62) | 7.52 (1.10) | 7.36 (0.95) | 3.14 (0.55) | 3.09 (0.44) |
| 2 | 22.80 (3.18) | 15.32 (2.51) | 15.12 (2.17) | 11.03 (2.03) | 30.11 (8.78) | |
| 3 | 21.85 (3.36) | 24.07 (3.91) | 18.61 (3.14) | 15.89 (2.95) | 37.09 (12.09) | |
| Cross | 1 | 18.49 (2.32) | 8.05 (1.34) | 7.78 (1.40) | 3.39 (0.53) | 13.19 (12.14) |
| 2 | 17.33 (2.43) | 17.31 (3.32) | 15.13 (5.02) | 6.96 (1.11) | 33.55 (12.78) | |
| 3 | 17.10 (2.55) | 24.44 (3.79) | 54.86 (25.73) | 10.04 (1.84) | 9.63 (2.05) | |
| Butterfly | 1 | 18.92 (3.48) | 7.08 (1.60) | 61.18 (28.58) | 2.90 (0.64) | 31.66 (6.36) |
| 2 | 18.23 (2.92) | 20.01 (4.53) | 30.10 (14.87) | 9.89 (2.15) | 48.57 (13.14) | |
| 3 | 19.99 (2.55) | 32.27 (4.68) | 26.09 (3.89) | 11.84 (2.06) | 13.58 (5.89) |
Note. Experiments were performed on a computer cluster consisting of machines with Intel Xeon-based processors (I5 or I7 processors) with RAM ranging from 1,600 to 2,100 MHz. Abbreviations: CCA, canonical correlation analysis; scTCCA, tensor canonical correlation analysis with separable covariance; spscTCCA, sparse tensor canonical correlation analysis with separable covariance; spTCCA, sparse tensor canonical correlation analysis; TCCA, tensor canonical correlation analysis