[E. Steingr铆msson, Statistics on ordered partitions of sets, arXiv: math.CO/0605670] introduced several hard statistics on ordered set partitions and conjectured that their generating functions are related to the q-Stirling numbers of the second kind. In a previous paper, half of these ...
.partitions group by object_id ) statsRowCounts on objIdsWithStats.object_id = statsRowCounts.object_id left join ( SELECT sm.name [schema] , tb.name logical_table_name , tb.object_id object_id , SUM(rg.row_count) actual_row_count FROM sys.schemas sm INNER JOIN sys.tables tb ...
1. Let's assume that Oracle is creating a frequency histogram on the PROMO_CATEGORY_ID column of the PROMOTIONS table. The first step is to select the PROMO_CATEGORY_ID from the PROMOTIONS table ordered by PROMO_CATEGORY_ID. 2. Each PROMO_CATEGORY_ID is then assigned to its own histogram...
The union of two sets - 并集 Definition The union of two sets A and B is the set A ∪ B = { x | x ∈ A or x ∈ B}. Untitled The intersection of two sets - 交集 Definition The intersection of two sets A and B is the set A ∩ B ={ x | x ∈ A and x ∈ B}. Untit...
Operationally, CART partitions the training sample into increasingly homogeneous groups, thereby inducing a partition on the measurement space. At each stage, three criteria are considered in determining the next split for the training sample cases inside the current partition: 1. Is Xi ≤ d (univar...
TheDBMS_STATSpackage can gather statistics on indexes, tables, columns, and partitions, as well as statistics on all schema objects in a schema or database. It does not gather cluster statistics--you can useDBMS_STATSto gather statistics on the individual tables instead of the whole cluster. ...
The chi-square test of independence described on this webpage assumes that both the rows and columns of the contingency table contain counts of nominal (categorical) categories. When one of the categories is nominal and the other is ordered (ordinal), then we can use the following alternative ...
v If Count or Percent is selected on the Statistics tab, defined value labels are included in the output even if you don't select Value labels here. v For multiple dichotomy sets, "value labels" are either the variable labels for the elementary variables in the set or the labels of ...
A histogram is a set of up to 200 values of a given column. All or a sample of the values in a given column are sorted; the ordered sequence is divided into up to 199 intervals so that the most statistically significant information is captured. In general, these intervals are of nonequ...
by directly minimizing the \(L_1\) distance over the so-called Yatracos class—a certain class of subsets of the support set that are induced by the partitions of each ordered pair of histograms in the set of histograms from which one has to choose the optimally smoothed histogram (Devroye...