Holistic Query Expansion Using Graphical Models. - Daniel Mahler (New Directions in Question Answering, 2004)

Generalized syntactic and semantic models of query reformulation. - Amac Herdagdelen; Massimiliano Ciaramita; Daniel Mahler; Maria Holmqvist; Keith B. Hall; Stefan Riezler; Enrique Alfonseca (SIGIR, 2010)