Alberto Paccanaro Geoffrey E. Hinton Learning Hierarchical Structures with Linear Relational Embedding. 857-864 2001 conf/nips/2001 NIPS http://www-2.cs.cmu.edu/Groups/NIPS/NIPS2001/papers/psgz/AA47.ps.gz db/conf/nips/nips2001.html#PaccanaroH01