On the Advice Complexity of Online Unit Clustering

In online unit clustering a set of n points of a metric space that arrive one by one, partition the points into clusters of diameter at most one, so that number of clusters is minimized. This paper gives linear upper and lower bounds for the advice complexity of 1-competitive online unit clustering algorithms in terms of number of points in $\mathbb{R}^d$ and $\mathbb{Z}^d$.