c ○ 2001 Kluwer Academic Publishers. Manufactured in The Ne(15)
发布时间：2021-06-07
Abstract. A data cube is a popular organization for summary data. A cube is simply a multidimensional structure that contains in each cell an aggregate value, i.e., the result of applying an aggregate function to an underlying relation. In practical situat
LOGLINEAR-BASEDQUASICUBES
pressionobtainedusingthecensusdatasetwithdifferentβ.Thecolumn“Cells”indicatesthenumberofcellsinthecorecuboid;thecolumn“Singlecells”showsthenumberofcellsretainedinsparsechunks;thecolumn“Parameters”thenumberofparametersusedbyallthemodels;andthecolumn“Outliers”thenumberofcellsretainedindense
chunks.
Figure4.Errorofrangequeriesoverthecensusdataset,computedfromtheapproximatebasecuboidcompressedwithβ=0.4.(Theerrorsreportedaretheaverageoverrangequeriesofthesameselectivity.)
c ○ 2001 Kluwer Academic Publishers. Manufactured in The Ne(15).doc
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