My question is regarding section 4.1 of Iota white paper. I really don't understand how particles or random walkers will be actually placed by the nodes in the tangle. What they state is : "The node just use their own pseudo-random number generators to simulate the random walk" Iota White Paper page no.20. But I am not able to grasp this.
extract from the Whitepaper:
The idea is to use a MCMC algorithm to select the two tips to reference. Let H x be the current cumulative weight of a site. Recall that we assumed all own weights are equal to 1. Therefore, the cumulative weight of a tip is always 1, and the cumulative weight of other sites is at least 2. The idea is to place some particles, a.k.a. random walkers, on sites of the tangle and let them walk towards the tips in a random 28 way. The tips “chosen” by the walks are then the candidates for approval.
So the question is "How random walkers are placed, on sites of tangle?"