Item Cluster
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An item cluster is an item sets with members that have low in-group variation and high out-group variation given some similarity relationship.
- AKA: Cluster.
- Context:
- It can have:
- It can be a member of as Cluster Set (produced by a clustering task).
- It can be associated with a Metric Space.
- It can represent a Real-World Group.
- Example(s):
- a Word Sense Cluster.
- a Coreference Cluster.
- a Document Cluster.
- a Topic Cluster.
- a Keyword Cluster.
- a Person Cluster.
- a Computer Cluster.
- …
- Counter-Example(s):
- See: Clustering Task, Bipartite Graph.
References
2009
- (WordNet, 2009) ⇒ http://wordnetweb.princeton.edu/perl/webwn?s=clustering
- S: (n) bunch, clump, cluster, clustering (a grouping of a number of similar things) "a bunch of trees"; "a cluster of admirers"
- S: (v) cluster, constellate, flock, clump (come together as in a cluster or flock) "The poets constellate in this town every summer"
- S: (v) bunch, bunch up, bundle, cluster, clump (gather or cause to gather into a cluster) "She bunched her fingers into a fist"
- http://en.wiktionary.org/wiki/cluster#Noun
- cluster (plural clusters)
- 1. A group or bunch of several discrete items that are close to each other. A cluster of flowers grew in the pot.
- 6. (statistics) A significant subset within a population.
- cluster (plural clusters)
2006
- (Teh et al., 2006) ⇒ Yee Whye Teh, Michael I. Jordan, Matthew J. Beal, and David M. Blei. (2006). “Hierarchical Dirichlet Processes.” In: Journal of the American Statistical Association, 101(476). doi:10.1198/016214506000000302
- QUOTE: We assume that the data are subdivided into a set of groups, and that within each group we wish to find clusters that capture latent structure in the data assigned to that group. The number of clusters within each group is unknown and is to be inferred. Moreover, in a sense that we make precise, we wish to allow clusters to be shared among the groups.