Sat, 05 Jul 2008 23:05:30 BST CiteULike: mshafiei's Fienberg http://www.citeulike.org/user/mshafiei/author/Fienberg CiteULike.org en-gb Copyright © 2004-2008 citeulike.org http://www.citeulike.org/user/mshafiei/article/698679 <i>Proc Natl Acad Sci U S A, Vol. 101 Suppl 1 (6 April 2004), pp. 5220-5227.</i><br /><br />PNAS is one of world's most cited multidisciplinary scientific journals. The PNAS official classification structure of subjects is reflected in topic labels submitted by the authors of articles, largely related to traditionally established disciplines. These include broad field classifications into physical sciences, biological sciences, social sciences, and further subtopic classifications within the fields. Focusing on biological sciences, we explore an internal soft-classification structure of articles based only on semantic decompositions of abstracts and bibliographies and compare it with the formal discipline classifications. Our model assumes that there is a fixed number of internal categories, each characterized by multinomial distributions over words (in abstracts) and references (in bibliographies). Soft classification for each article is based on proportions of the article's content coming from each category. We discuss the appropriateness of the model for the PNAS database as well as other features of the data relevant to soft classification. Mixed-membership models of scientific publications. E Erosheva S Fienberg J Lafferty doi:10.1073/pnas.0307760101 Proc Natl Acad Sci U S A, Vol. 101 Suppl 1 (6 April 2004), pp. 5220-5227. 2006-06-16T19:49:08-00:00 2004 Proc Natl Acad Sci U S A 0027-8424 101 Suppl 1 5220 5227 citation-graph relational topic-modeling http://www.citeulike.org/user/mshafiei/article/2430107 <i>Vol. 4503 (June 2006)</i> Exploratory Study of a New Model for Evolving Networks Anna Goldenberg Alice Zheng Vol. 4503 (June 2006) 2008-02-26T15:54:26-00:00 2006 4503 Springer sna social-network-analysis http://www.citeulike.org/user/mshafiei/article/2430097 <i>(2007)</i> Mixed membership stochastic blockmodels Edoardo Airoldi David Blei Stephen Fienberg Eric Xing (2007) 2008-02-26T15:54:25-00:00 2007 sna social-network-analysis http://www.citeulike.org/user/mshafiei/article/2430096 <i>(2005), pp. 82-89.</i> A latent mixed membership model for relational data Edoardo Airoldi David Blei Eric Xing Stephen Fienberg (2005), pp. 82-89. 2008-02-26T15:54:25-00:00 2005 82 89 ACM Press sna social-network-analysis