Neural embeddings have been effectively integrated into information retrieval tasks including ad hoc retrieval. One of the benefits of neural embeddings is they allow for the calculation of the similarity between queries and documents through vector...

Semantic search has emerged as a possible way for addressing the challenges of traditional keyword-based retrieval systems such as the vocabulary gap between the query and document spaces. In this paper, we propose a novel ...

an unsupervised entity selection method based on the graphical model

for query entity expansion and then for ad hoc retrieval. -3- We thoroughly evaluate our method

and compare it with the state-of-the-art keyword and entity based retrieval methods...