Performance of FPKM in distinguishing between complete and partial transcripts. An assembled transcript will be classified into the category of complete assemblies (‘=’ classcode) if its FPKM is larger than a given threshold, otherwise it will be put into the partial category (‘c’ classcode). The blue ROC curve  represents the performance of FPKM in classifying the complete and partial transcripts. The corresponding Area Under Curve (AOC) is 0.7825.
Sun et al. BMC Bioinformatics 2012 13:331 doi:10.1186/1471-2105-13-331