201311 · In this paper, we study the use of aggregate-level demand management, specifically staging and routing, in planning for large-scale, automobile-based, evacuations with notice, i.e., evacuations in response to impending threats such as hurricanes, floods, and wild-fires, where such evacuations are ideally completed before there is substantial ...
view more11/02/10 Data Mining: Concepts and Techniques 14 Closed Cubes A cell c, is a closed cell, if there exists no cell d such that d is a specialization (descendant) of cell c (i.e., replacing a * in c with a non-* value),and d has the same measure value as c (i.e., d will have strictly smaller measure value than c).
view more2021811 · SQL’s basic set of five aggregate functions needs careful extension to include functions such as rank, N_tile, cumulative, and percent of total to ease typical data mining operations.
view moreConcept hierarchy generation using prespecified semantic connections Suppose that a data mining expert (serving as an administrator) has pinned together the five attributes number, street, city, province_or_state, and country, because they are closely linked semantically regarding the notion of location.
view moreWhat is Data Cube? When data is grouped or combined in multidimensional matrices called Data Cubes. The data cube method has a few alternative names or a few variants, such as "Multidimensional databases," "materialized views," and "OLAP (On-Line Analytical Processing)." The general idea of this approach is to materialize certain expensive ...
view more2024318 · Front Cover: Design, Synthesis, and Characterization of Novel Styryl Dyes as Fluorescent Probes for Tau Aggregate Detection in Vitro and in Cells (Chem. Asian J. 6/2024) Withsakorn Sangsuwan, Kriangsak Faikhruea, Kotchakorn Supabowornsathit, Don Sangsopon, Praewphan Ingrungruanglert
view moreData analysis applications typically aggregate data across manydimensions looking for anomalies or unusual patterns. The SQL aggregatefunctions and the GROUP BY operator produce zero-dimensional orone-dimensional aggregates. Applications need the N-dimensionalgeneralization of these operators. This paper defines that operator, calledthe …
view more2010111 · (From the book: 3.13 (partly)) A data cube, C, has n dimensions, and each dimension has exactly p distinct values in the base cuboid. Assume that there are no concept hierarchies associated with the dimensions. What is the maximum number of cells possible (including both base cells and aggregate cells) in the data cube, C?
view more2020731 · A lesser known, but very effective way of handling categorical variables, is Target Encoding. It consists of substituting each group in a categorical feature with the average response in the target variable. Example of Target Encoding. The process to obtain the Target Encoding is relatively straightforward and it can be summarised as: Group the ...
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