Q: How can we embed not just a word, but a whole sentence/paragraph/document? A1: Averaged word embedding A2: doc2vec / paragraph vectors
Paper 1: https://arxiv.org/abs/1405.4053 Paper 2: https://arxiv.org/abs/1507.07998
These notebooks provide an excercise in gensim's doc2vec models and t-SNE visualisation of the result.