Question: How they utilize LDA and Gibbs sampling to evaluate ISWC and WWW publications?
Answer: the LDA approaches to recommendation systems and given the importance of research, we have studied recent impressive articles on this subject and presented a taxonomy of recommendation systems based on LDA of the recent research, we evaluated ISWC and WWW conferences articles from DBLP website and used the Gibbs sampling algorithm as an evaluation parameter
Alternative answer: discover the trends of the topics and find relationship between LDA topics and paper features and generate trust tags,  learn a LDA model with 100 topics; $\alpha =0.01$, $\beta = 0.01$ and using Gibbs sampling as a parameter estimation