A method determines the connectivity components defined by a set of relations over a set of data elements. For each first data element of a selected subset of data elements, a second data element that is linked to the first data element by a path of relations is selected as its ...
In order to promote innovation, a modern data center infrastructure is needed that is reflected in all areas - from power supply to racks and cabling. Above all, the issue of sustainability is once again becoming a priority for many operators. Within the last decade, the need for computing ...
wikipedia的解释:Principal component analysis(PCA)is a statistical procedure that uses anorthogonal transformationto convert a set of observations of possibly correlated variables into a set of values oflinearly uncorrelatedvariables calledprincipal components. The number of principal components is less than ...
Principal Component Analysis (PCA) is a very powerful technique that has wide applicability in data science, bioinformatics, and further afield. It was initially developed to analyse large volumes of data in order to tease out the differences/relationships between the logical entities being analysed....
Weekday 此NSDateComponents 中的工作日单位数。 WeekdayOrdinal 此NSDateComponents 中的工作日单位的序号。 WeekOfMonth 当月的一周。 WeekOfYear 一年中的一周。 Year 此NSDateComponents 中的年单位数。 YearForWeekOfYear 一年中的一周的年份。 Zone 表示特定 NSCalendar中的日期。 (继承自 NSObject) 方法...
Variance is another measure of the spread of data in a data set. In fact it is almost identical to the standard deviation.(方差是数据集中数据分布的另一种度量。实际上,它几乎与标准差相同) 方差的数学表达公式如下: 1.3 Covariance(协方差) ...
Performing a first level of data compression (collector compression). Responding to control requests, such as requests to pause or resume collection. Options to send data to Historian or Cloud service through a Web socket connection For mission-critical data collection, redundant collectors are possibl...
英文名称:Hydraulic fluid power — Cleanliness of components — Inspection document and principles related to contaminant extraction and analysis, and data reporting 标准状态:现行 发布日期:2015-03-20 文档简介 ISO18413:2015EN液压流体动力——组件的清洁度——与污染物的提取和分析以及数据报告相关的检查文件...
用英文定义就是,“For each data item, multiply the different between the x value and the mean of x, by the difference between the y value and the mean of y. Add all these up, and divide by (n -1)”(对于X和Y的每个数据项, 与(变量X的均值)的差乘以 与(变量Y的均值)的差,然后将...
Similarly, ‘data services’ assist organizations in the capture, storage, curation, long-term preservation, discovery, access, retrieval, aggregation, analysis, and/or visualization of scientific data, as well as in the associated legal frameworks, to support disciplinary and multidisciplinary scientific...