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Table 3 Labelling accuracy results obtained using Convex-NMF.

From: Non-negative matrix factorisation methods for the spectral decomposition of MRS data from human brain tumours

LTE

A2, NO(2SS)

A2, ME, NO(3SS)

A2, GL, NO(3SS)

A2, MM, NO(3SS)

A2, AG, NO(4SS)

A2, AG, MM(4SS)

Total:100%(35/35)

Total:84.8%(56/66)

Total:71.1%(81/113)

Total:96.7%(87/90)

Total:77.8%(112/144)

Total:73.9%(136/184)

A2:100%(20/20)

A2:100%(20/20)

A2:100%(20/20)

A2:100%(20/20)

A2:100%(20/20)

A2:95.0%(19/20)

NO:100%(15/15)

ME:67.7%(21/31)

GL:59.0%(46/78)

MM:94.5%(52/55)

AG:70.6%(77/109)

AG:64.2%(70/109)

 

NO:100%(15/15)

NO:100%(15/15)

NO:100%(15/15)

NO:100%(15/15)

MM:85.5%(47/55)

STE

A2, NO(2SS)

A2, ME, NO(3SS)

A2, GL, NO(3SS)

A2, MM, NO(3SS)

A2, AG, NO(4SS)

A2, AG, MM(4SS)

Total:93.2%(41/44)

Total:91.5%(75/82)

Total:88.5%(115/130)

Total:89.2%(91/102)

Total:92.9%(156/168)

Total:86.3%(176/204)

A2:86.4%(19/22)

A2:77.3%(17/22)

A2:81.8%(18/22)

A2:77.3%(17/22)

A2:81.8%(18/22)

A2:90.9%(20/22)

NO:100%(22/22)

NO:100%(22/22)

GL:87.2%(75/86)

MM:89.7%(52/58)

AG:93.5%(116/124)

AG:87.9%(109/124)

 

ME:94.7%(36/38)

NO:100%(22/22)

NO:100%(22/22)

NO:100%(22/22)

MM:81.0%(47/58)

  1. Summary of the labelling accuracy using Convex-NMF with K-means initialisation for A2, NO; A2, ME, NO; A2, GL, NO; A2, MM, NO; A2, AG, NO; and A2, AG, MM, at LTE and STE. They include the accuracy (total and by tumour type), and the number of correctly labelled samples from the total, in parentheses. The number of source signals (SS) used in the experiments is indicated in parentheses