Latent Variable PCFG

AbstractWe investigate Arabic Context Free Grammar parsing with dependency annotation comparing lexicalised and unlexicalised parsers. We study how morphosyntactic as well as function tag information percolation in the form of …...

We introduce a provably correct learning algorithm for latent-variable PCFGs. The algorithm relies on two steps: first, the use of a matrix-decomposition algorithm ap- plied to a co-occurrence matrix estimated …...

We describe an approach to create a di- verse set of predictions with spectral learn- ing of latent-variable PCFGs (L-PCFGs). Our approach works by creating multiple spectral models where noise …...