The clusters that remain are more like those along the stink highway.
Then there are the clusters that are based more on personal connections or affiliations than on geography.
Over the years, as fewer and fewer Americans smoked, the number of clusters declined but the clusters that remained stayed the same size, which meant that smokers were not stopping smoking one by one.
When that industry vanished it destroyed the clusters that had grown up around it, from firms making propellers to potteries making the china for first-class passengers' breakfast.
In the clusters that had to wait for the vaccine, 16 people contracted Ebola.
All the clusters that do not pass this test are deleted.
The clusters that remain unlabeled are likely to be an undefined group.
Furthermore, it may slow down recruitment in the clusters that are randomized to the "less interesting" treatment.
Choosing the 15-cluster solution and examining their centers, we identify the clusters that are very similar to each other.
Instances built around these newer machines were much faster than the clusters that used older hardware, said the researchers.
The clusters that have been refined are called the refined cluster sets and their initial values are null.
