Fig. 1
From: Sparse feature selection for classification and prediction of metastasis in endometrial cancer
Hierarchical clustering of training data. Unsupervised two-way hierarchical clustering of the 213 miRNA expression levels across the 86 tumor samples. The 43 samples at left are lymph node-negative while the 43 samples at right are lymph node-positive. It is evident that there is no discernible pattern in the clustering