[Scikit-learn-general] Divisive Hierarchical Clustering

2015-05-15 Thread Sam Schetterer
Is there any interest in adding divisive hierarchical clustering algorithms to scikit-learn? They are useful for document clustering [1] and biostats [2], and can have much better time complexity than agglomerative approaches ([1], can run in ~O(n*log(k)), where k is the number of clusters). This a

Re: [Scikit-learn-general] Divisive Hierarchical Clustering

2015-05-16 Thread Sam Schetterer
ithms, as that is often more of an implementation detail. > Single-link agglomerative clustering for example is often implemented by > computing the spanning tree and then cutting it. > So it is more of a question what your linkage criterion is. > What criteria are you thinking of? >

Re: [Scikit-learn-general] Divisive Hierarchical Clustering

2015-05-18 Thread Sam Schetterer
ature? Are there > alternatives? (I've not read up yet.) > > Thanks, > > Joel > > On 17 May 2015 at 06:43, Sam Schetterer wrote: > >> Andreas, >> >> There isn't necessarily a linkage function defined, at least in the >> sense of agglome