10.(intr) (of lines, etc) to extend in rays or on radiating paths 11.(Art Terms) (tr) to adorn (an ornament, etc) with rays or radiating lines [C14: from Old Frenchrai, from Latinradiusspoke, radius] ray (reɪ) n (Animals) any of various marine selachian fishes typically having...
是指可以同时匹配多个模式的函数。在R语言中,有多个函数可以实现多匹配功能,包括grep()、grepl()、regexpr()、gregexpr()和sub()等。 grep()函数:用于在字符向量中搜索匹配某个模式的元素,并返回匹配的元素的索引。它可以通过参数指定搜索的模式、搜索的方式(正则表达式或固定字符串)、搜索的范围等。例如,可以使...
Learn descriptive statistics such as means, standard deviations, and correlations for a more precise depiction Learn inferential statistics like regression, t-tests, the analysis of variance, and the chi-square test to determine the reliability of your results ...
maths matin matlo matte matts matza matzo mauby mauds mauls maund mausy mauts mauve mauzy maven mavie mavin mavis mawed mawks mawky mawns maxed maxes maxim maxis mayan mayas maybe mayed mayos mayst mazed mazes mazey mazut meads meals mealy meane means meant meany mease meath meats meaty ...
But that hasn’t stopped him pursuing a career with the two things he loves most -- maths and the mountains. D Pascal Harper When Pascal Harper says that to do his job you need to be prepared to get your hands dirty, he means it. Pascal learned this lesson the hard way, when early...
According to the passage, 'scheduling' means that you A. need to be efficient in work. B. plan your work properly. C. try to finish work ahead of time. D. know how to work in teams. 查看完整题目与答案 What does the woman think of the man's English? A. Excellent...
最新《交通安全法》实施后,某市管理部门以周为单位,记录的每周查处的酒驾人数与该周内出现的交通事故数量如下: 酒驾人数 x 80 147 121 100 96 103 87 交通事故 y 19 31 30 23 25 24 20 通过如表数据可知,酒驾人数x与交通事故数y之间是( )
aQQ is a form of Instant Messaging, which means that you can enjoy private one-on-one chats with other QQ members, anywhere in the world. QQ是立即传讯的形式,因此它意味着您能享受私有一对一的闲谈与其他QQ成员,世界上任何地方。[translate] ...
In a recent interview with the Stellenbosch local newspaper, Eikestadnuus, Mentz pointed out that golf is an expensive sport and that many children lack the means to participate in it. Thanks to the SAGDB this has now become possible. Gladdening indeed is the fact that the children are ...
Cluster analysis base: hclust(), kmeans(); cluster; mclust; pvclust Data mining, machine learning ada; adabag; e1071; gbm; ipred; mboost; neuralnet; nnet; party; randomForest; rpart; tree Discriminant analysis MASS: lda(), qda() Experiments pcalg; experiment; stepp Factor analysis base: ...