Hierarchical Clustering of Data Streams:
            Scalable Algorithms and Approximation Guarantees

Anand Rajagopalan 1 Fabio Vitale 2 Danny Vainstein 3 Gui Citovsky 1 Cecilia M. Procopiuc 1 Claudio Gentile 1

             Abstract                within highly dynamic (and typically non-stationary) en-
                                 vironments. In these contexts, it is crucial to devise adap-
    We investigate the problem of hierarchically clus-     tive HC solutions that enable the handli ...