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- W2212357079 abstract "The paper is a literature survey of query selectivity methods for some kind of queries with composed selection conditions. Some simple commercially used methods base on the simplified assumption of table attribute value independence. The other methods presented in this paper are more accurate. They are based on the estimation of the multi-dimensional distribution of attribute values. Described methods use the discrete cosine transform and the discrete wavelet one for the effective query estimation based on the loss compressed spectrum of the attribute value frequency vector." @default.
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- W2212357079 date "2008-05-19" @default.
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- W2212357079 title "The query selectivity estimation using cosine and wavelet transform" @default.
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- W2212357079 doi "https://doi.org/10.21936/si2008_v29.n2a.532" @default.
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