Two results on interactive lossless source encoding and decoding with side information at the decoder

In [1], Slepian and Wolf proposed and analyzed a ground-breaking paradigm of source coding for a source network in which a finite alphabet source X = {X
_I
}
_I
^∞
=1 is to be encoded and transmitted to the decoder, and another finite alphabet source Y = {Y
_I
}
_I
^∞
=1 correlated with X is available only to the decoder as a helper, or in other words, the side information. In Slepian and Wolf's paradigm, which is now commonly referred to as Slepian-Wolf(SW) coding, information flow is one-way from the encoder to the decoder, and no interaction is allowed between them.