Guo Yan Feng Xu 0007 Yuan Yao 0001 Jian Lu 0001 Enhancing trustworthiness evaluation in internetware with similarity and non-negative constraints. 25:1-25:4 2013 Internetware https://doi.org/10.1145/2532443.2532459 conf/internetware/2013 db/conf/internetware/internetware2013.html#YanXYL13