Speaking of replication, my personal experience in very narrow field of audio DSP which is easy to test gave results of 9 papers impossible to implement mostly due to missing key details, 6 more where results only apply in specific test signals (total failure in reality), 3 where performance was overstated by over 12 dB in real samples. 8 were really good and detailed. Two had actual used test code available, one has it in printed form. None with the code were any good. :D

(IEEE database around 2005 in noise reduction, echo cancellation and speaker separation or detection.)