A detailed statistical model for relational query optimization

Muthuswamy, B.; Kerschberg, Larry

doi:10.1145/320435.320564

Cited by 10 publications

(1 citation statement)

References 14 publications

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“…When the law is unknown, nonparametric methods can be used that do not make a priori assumptions about distribution. These are subdivided into two classes: first, scalebased methods for which equal width (Chu, 1991;Mostardi, 1990), equal-height (Liou and Yao, 1977;Muralikrishna and DeWitt, 1988;Piatetsky-Shapiro and Connell, 1984) and variable-width (Merrett and Otoo, 1979;Muthuswamy and Kerschberg, 1985;Whang et al, 1994) histograms are well-known examples, and second, analytic methods which approximate the actual data distribution using a finite series of analytic functions (Lefons, 1988;Lefons et al, 1983Lefons et al, , 1995Sun et al, 1993). Guillaud and Chassery (1992) used a pattern recognition approach to interpret and analyze histograms which were defined in a new vectorial space determined by Legendre polynomials.…”

Section: Introductionmentioning

confidence: 99%

Physiological significance of the cytometric distribution of fluorescent yeasts after viability staining

Bouchez

Cornu

Danzart

et al. 2004

Biotech & Bioengineering

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This article describes a new method for the early detection of alcoholic fermentation arrest. This methodology is based on the flow cytometric assessment of Saccharomyces cerevisiae yeasts stained with a carboxyfluorescein diacetate fluorescent viability probe. Multicomponent analysis of viable cell distribution constitutes a promising new tool to describe physiological and dynamic changes to heterogeneous viable populations during alcoholic fermentation, through its ability to discriminate between successful processes and those ending prematurely. This framework, which is based on the comparison of cytometric histogram descriptors' combinations that can be related to simple physiological significance comparison, quickly and simply, allows testing yeasts for their fermentation ability and can be used to detect any kind of viability loss so that fermentation arrest can be avoided.

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