Despite the obvious benefits of the tensor-based approaches, this work suggests for one more time that vector mixture models might constitute a hardto-beat baseline; similar observations have been made, for example, in the comparative study of Blacoe and Lapata (2012).
when trying to interpret the mixing results regarding the effectiveness of the tensor-based models compared to vector mixtures, we need to take into account that the tensorbased models tested in this work were all "hybrid", in the sense that they all involved some element of point-wise operation; in other words, they constituted a trade-off between transformational power and complexity.