Figure 2
From: Searching for transcription factor binding sites in vector spaces
Illustration of the NPV method. The solid arrow represents the negative-to-positive vector μ+−μ−, pointing from μ−to μ+. The hallow triangles denote the known binding sites, whereas the circles represent the known non-binding sites. The center of the binding site vectors is marked by the solid triangle, while the center of the non-binding site vectors is marked by the solid circle.