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RT @Philipp_Mayr: @HAzarbonyad @lxymichael query reformulations and topic shift correlated https://t.co/FvUisdnWtA #ECIR2017 by @lxymichael
RT @Philipp_Mayr: @HAzarbonyad @lxymichael query reformulations and topic shift correlated https://t.co/FvUisdnWtA #ECIR2017 by @lxymichael
@HAzarbonyad @lxymichael query reformulations and topic shift correlated https://t.co/FvUisdnWtA #ECIR2017 by @lxymichael