R语言属于统计分析语言,近年一直在10至20名之间徘徊,曾经短暂地冲到过第8名(2020年8月)。2022年12月,排名第11位,如图0.5所示。 图0.5 TIOBE最新编程语言排名 IEEE Spectrum发布的2021年度编程语言排行榜,从涵盖社交网站、开源代码网站和求职网站的8个信息源:CareerBuilder、GitHub、Google、Hacker News、IEEE、Reddit...
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* MSEMSE is the mean squared error. * pp is the number of coefficients in the regression model. mod <- lm(ozone_reading ~ ., data=ozone) cooksd <- cooks.distance(mod) Influence measures In general use, those observations that have a cook’s distance greater than 4 times the mean may...
The SI (System International) R-value is defined as units of Kelvin meters (Km) squared per Watt - KM2/W Also US R-Value or Imperial Inch-Pound R-Value = Metric R-Value / 0.1761 R-Value Imperial measures (ft2·°F·h / BTU) Imperial (UK or British) units, are expressed as well...
(test.error) #contains the Mean squared test error for each of the 100 trees averaged #Plotting the test error vs number of trees plot(n.trees , test.error , pch=19,col="blue",xlab="Number of Trees",ylab="Test Error", main = "Perfomance of Boosting on Test Set") #adding the ...
Ingesting documents: Document loaders are convenient wrappers that can handle many formats: PDF, JSON, HTML, Markdown, etc. They can also directly retrieve data from some databases and APIs (GitHub, Reddit, Google Drive, etc.). Splitting documents: Text splitters break down documents into smaller...
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Type a subreddit name to list its overlaps with other subreddits. The scores listed are "probability multipliers", so a score of 2 means that users of r/trees are twice as likely to post and comment on that subreddit. A score of 1 means that users of r/trees are no more likely ...
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Type a subreddit name to list its overlaps with other subreddits. The scores listed are "probability multipliers", so a score of 2 means that users of r/jujutsukaisen are twice as likely to post and comment on that subreddit. A score of 1 means that users of r/jujutsukaisen are no ...