Table 4.

Gene expression microarray datasets used in this study.

Task & dataset	Number of classes	Number of genes	Number of samples	Prediction task
Dx-Alizadeh	3	4026	62	Diffuse large B-cell lymphoma, follicular lymphoma, chronic lymphocytic leukemia
Dx-Alon	2	2000	62	Colon tumors and normal tissues
Dx-Armstrong	3	11225	72	AML, ALL and mixed-lineage leukemia (MLL)
Dx-Bhattacharjee	5	12600	203	4 lung cancer types and normal tissues
Dx-Golub	3	5327	72	Acute myelogenous leukemia (AML), acute lymphoblastic leukemia (ALL) B-cell and ALL T-cell
Dx-Khan	4	2308	83	Small, round blue cell tumors of childhood
Dx-Nutt	4	10367	50	4 malignant glioma types
Dx-Pomeroy	5	5920	90	5 human brain tumor types
Dx-Ramaswamy	26	15009	308	14 various human tumor types and 12 normal tissue types
Dx-Ramaswamy2	2	13247	76	Metastatic and primary tumors
Dx-Shipp	2	5469	77	Diffuse large B-cell lymphomas and follicular lymphomas
Dx-Singh	2	10509	102	Prostate tumor and normal tissues
Dx-Staunton	9	5726	60	9 various human tumor types
Dx-Su	11	12533	174	11 various human tumor types
Px-Beer	2	7129	86	Lung adenocarcinoma survival
Px-Bhattacharjee	2	12600	62	Lung adenocarcinoma 4-year survival
Px-Iizuka	2	7070	60	Hepatocellular carcinoma 1-year recurrence-free survival
Px-Pomeroy	2	7129	60	Medulloblastoma survival
Px-Rosenwald	2	7399	240	Non-Hodgkin lymphoma survival
Px-Veer	2	24188	97	Breast cancer 5-year metastasis-free survival
Px-Veer2	3	24188	115	Breast cancer 5-year metastasis-free survival, metastasis within 5 years, germline BRCA1 mutation
Px-Yeoh	2	12240	233	Acute lymphocytic leukemia relapse-free survival

The reference paper for each dataset is provided in the Additional File 3.