Quick-thoughts is another interesting algorithm for learning the sentence embeddings. In skip-thoughts, we saw how we used the encoder-decoder architecture to learn the sentence embeddings. In quick-thoughts, we try to learn whether a given sentence is related to the candidate sentence. So, instead of using a decoder, we use a classifier to learn whether a given input sentence is related to the candidate sentence.
Let 
be the input sentence and 
be the set of candidate sentences containing both valid context ...
