Operators To combine distributional vectors into a single-vector sentence representation, we use a representative set of methods from Mitchell and Lapata (2010).
we use vector addition, elementwise (Hadamard) product, Kronecker product, and circular convolution (Plate, 1991;Jones and Mewhort, 2007), which are de-fined as follows for two word vectors x, y: Repeated application of the Sum operation adds contexts for each of the words that occur in a phrase, which maintains (and mixes) any noisy parts of the component word vectors.