Table 3.

Area under the precision-recall curves calculated using average precision for each class

Class	AUC-PR
	VGG16	InceptionV3	ResNet50V2	Xception
Alexandrium tamarense	0.97	0.85	0.96	0.98
Ceratium fusus	0.88	0.55	0.78	0.89
Ceratium lineatuma	0.76	0.60	0.76	0.91
Ceratium longpipes	0.97	0.93	0.98	0.99
Ceratium sp.	0.79	0.59	0.85	0.92
Chaetoceros socialis	0.98	0.96	0.99	0.99
Chaetoceros straight	0.80	0.61	0.77	0.84
Chaetoceros sp.	0.93	0.83	0.96	0.98
Crustaceana	0.56	0.30	0.84	0.86
Dictyocha speculum	0.98	0.88	0.97	0.99
Melosira octagona	0.98	0.92	0.97	0.98
Noise	0.96	0.87	0.94	0.98
Parvicorbicula socialisa	0.01	0.01	0.01	0.01
Prorocentrum micansa	0.19	0.21	0.20	0.16
Pseudo-nitchzia arcticaa	0.02	0.01	0.03	0.03
Rhizosoenia setigera	0.05	0.04	0.04	0.04
Rods	0.19	0.13	0.14	0.14
Skeletonema costatum	0.06	0.07	0.05	0.06
Tintinnida	0.01	0.01	0.01	0.02

^aIndicate rare classes with < 25 examples in the training set