4.17 The purpose of this exercise is to show how a {0,1}-valued Markov mesh model can be recast as a Markov random field. For simplicity, restrict attention to the one-dimensional case and suppose that the joint distribution is built from the one-sided conditional distributions for t > 0, p(xt|xt−1) = exp(????xt + ????xtxt−1)∕{1 + exp(???? + ????xt−1)}