Similarity Group-By

@article{Silva2009SimilarityG,
  title={Similarity Group-By},
  author={Yasin N. Silva and Walid G. Aref and Mohamed H. Ali},
  journal={2009 IEEE 25th International Conference on Data Engineering},
  year={2009},
  pages={904-915}
}
Group-by is a core database operation that is used extensively in OLTP, OLAP, and decision support systems. In many application scenarios, it is required to group similar but not necessarily equal values. In this paper we propose a new SQL construct that supports similarity-based Group-by (SGB). SGB is not a new clustering algorithm, but rather is a practical and fast similarity grouping query operator that is compatible with other SQL operators and can be combined with them to answer… CONTINUE READING
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