Table 8.
Classification results of A2, AG, MM for the independent test set, varying the number of extracted features.
| PC/SS | LTE. PCA | LTE. Convex-NMF | STE. PCA | STE. Convex-NMF |
|---|---|---|---|---|
| 2 | Total:54.7%(29/53) | Total:54.7%(29/53) | Total:73.6%(39/53) | Total:71.7%(38/53) |
| A2:60.0%(6/10) | A2:60.0%(6/10) | A2:90.0%(9/10) | A2:60.0%(6/10) | |
| AG:52.5% (21/40) | AG:50.0%(20/40) | AG:67.5%(27/40) | AG:72.5% (29/40) | |
| MM:66.7% (2/3) | MM:100% (3/3) | MM:100% (3/3) | MM:100% (3/3) | |
| BER:0.40 | BER:0.30 | BER:0.14 | BER:0.23 | |
| 3 | Total: 60.4%(32/53) | Total:52.8%(28/53) | Total:69.8%(37/53) | Total:75.5%(40/53) |
| A2:70.0%(7/10) | A2:60.0%(6/10) | A2:80.0%(8/10) | A2:80.0%(8/10) | |
| AG:55.0% (22/40) | AG:50.0%(20/40) | AG:65.0%(26/40) | AG:75.0%(30/40) | |
| MM:100% (3/3) | MM:66.7% (2/3) | MM:100% (3/3) | MM:66.7% (2/3) | |
| BER:0.25 | BER:0.41 | BER:0.18 | BER:0.26 | |
| 4 | Total:67.9%(36/53) | Total:64.2%(34/53) | Total:73.6%(39/53) | Total:83.0%(44/53) |
| A2:80%(8/10) | A2:60.0%(6/10) | A2:70.0%(7/10) | A2:90.0%(9/10) | |
| AG:62.5%(25/40) | AG:62.5%(25/40) | AG:72.5%(29/40) | AG:80%(32/40) | |
| MM:100%(3/3) | MM:100%(3/3) | MM:100%(3/3) | MM:100%(3/3) | |
| BER:0.19 | BER:0.26 | BER:0.19 | BER:0.10 | |
| 5 | Total:67.9%(36/53) | Total:75.5%(40/53) | Total:73.6%(39/53) | Total:79.2%(42/53) |
| A2:80%(8/10) | A2:70.0%(7/10) | A2:70.0%(7/10) | A2:80.0%(8/10) | |
| AG:62.5%(25/40) | AG:75.0%(30/40) | AG:72.5%(29/40) | AG:77.5%(31/40) | |
| MM:100%(3/3) | MM:100%(3/3) | MM:100%(3/3) | MM:100%(3/3) | |
| BER:0.19 | BER:0.18 | BER:0.19 | BER:0.14 | |
| 6 | Total:67.9%(36/53) | Total:73.6%(39/53) | Total:79.2%(42/53) | Total:83.0%(44/53) |
| A2:80%(8/10) | A2:70.0%(7/10) | A2:70.0%(7/10) | A2:90.0%(9/10) | |
| AG:62.5%(25/40) | AG:72.5%(29/40) | AG:82.5%(33/40) | AG:82.5%(33/40) | |
| MM:100%(3/3) | MM:100%(3/3) | MM:66.7%(2/3) | MM:66.7%(2/3) | |
| BER:0.19 | BER:0.19 | BER:0.27 | BER:0.20 | |
| 7 | Total:67.9%(36/53) | Total:73.6%(39/53) | Total:79.2%(42/53) | Total:83.0%(44/53) |
| A2:80%(8/10) | A2:70.0%(7/10) | A2:70.0%(7/10) | A2:90.0%(9/10) | |
| AG:62.5%(25/40) | AG:72.5%(29/40) | AG:82.5%(33/40) | AG:82.5%(33/40) | |
| MM:100%(3/3) | MM:100%(3/3) | MM:66.7%(2/3) | MM:66.7%(2/3) | |
| BER:0.19 | BER:0.19 | BER:0.27 | BER:0.20 | |
| 8 | Total:75.5%(40/53) | Total:69.8%(37/53) | Total:81.1%(43/53) | Total:84.9%(45/53) |
| A2:80%(8/10) | A2:70.0%(7/10) | A2:80%(8/10) | A2:90.0%(9/10) | |
| AG:72.5%(29/40) | AG:67.5%(27/40) | AG:80%(32/40) | AG:85%(34/40) | |
| MM:100%(3/3) | MM:100%(3/3) | MM:100%(3/3) | MM:66.7%(2/3) | |
| BER:0.16 | BER:0.21 | BER:0.13 | BER:0.19 | |
| 9 | Total:75.5%(40/53) | Total:71.7%(38/53) | Total:84.9%(45/53) | Total:86.8%(46/53) |
| A2:80%(8/10) | A2:70.0%(7/10) | A2:90%(9/10) | A2:90%(9/10) | |
| AG:72.5%(29/40) | AG:70.0%(28/40) | AG:82.5%(33/40) | AG:87.5%(35/40) | |
| MM:100%(3/3) | MM:100%(3/3) | MM:100%(3/3) | MM:66.7%(2/3) | |
| BER:0.16 | BER:0.20 | BER:0.09 | BER:0.19 | |
| 10 | Total:73.6%(39/53) | Total:69.8%(37/53) | Total:86.8%(46/53) | Total:84.9%(45/53) |
| A2:80%(8/10) | A2:70.0%(7/10) | A2:90%(9/10) | A2:90.0%(9/10) | |
| AG:70%(28/40) | AG:67.5%(27/40) | AG:85%(34/40) | AG:85%(34/40) | |
| MM:100%(3/3) | MM:100%(3/3) | MM:100%(3/3) | MM:66.7%(2/3) | |
| BER:0.17 | BER:0.21 | BER:0.08 | BER:0.19 | |
Classification accuracies (total and by tumour type) and BER for the independent test set, at LTE and STE, using the corresponding classification settings from Table 7. The second and fourth columns show the results for PCA, and the third and fifth columns the results for Convex-NMF