Siamak Mehrkanoon Carlos Alzate Raghvendra Mall Rocco Langone Johan A. K. Suykens Multiclass Semisupervised Learning Based Upon Kernel Spectral Clustering. 720-733 2015 26 IEEE Trans. Neural Networks Learn. Syst. 4 https://doi.org/10.1109/TNNLS.2014.2322377 https://www.wikidata.org/entity/Q41187423 db/journals/tnn/tnn26.html#MehrkanoonAMLS15