Fig. 2

Multiple dataset classification of tissue types. a Classification across 6 Affymetrix (GPL570) datasets: 2 lung, 2 muscle, and 2 colon (Table 1). Nineteen samples were randomly selected from each of the six datasets. There are eight possible ways to split the datasets such that each tissue type is contained in each of the training and testing sets. The score for each pathway is the average of all eight splits. b and c: as in Fig. 1