Technical Interview Questions
In R, the expression all(NA == NA) will return NA, not TRUE or FALSE. This is because the comparison of two NA values is also NA in R. In R, NA represents missing or undefined values, and any comparison involving NA results in NA. Therefore, the logical expression NA == NA is NA, and when … Read more
R Hadoop Hadoop Streaming RHIPE ORCH Hadoop Integration Methods for R: While there’s no single “correct” answer, as the most suitable method depends on your specific use case and preferences, here are the five prominent options: 1. RHadoop: A collection of three packages (rmr2, rhdfs, rhbase) offering: MapReduce functionality in R (rmr2) Interaction with HDFS files (rhdfs) … Read more
For executing Hadoop to execute R code. For using R to access the data stored in Hadoop. R and Hadoop integration serves the purpose of handling large-scale data analysis and processing. Hadoop is a framework designed for distributed storage and processing of big data across clusters of computers. R, on the other hand, is a … Read more
Advantages Open Source Data Wrangling Array of Packages Platform Independent Machine Learning Operations Disadvantages Weak origin Data Handling Basic Security Complicated Language Lesser Speed R is a programming language and environment designed for statistical computing and graphics. Like any tool, R has its own set of advantages and disadvantages. Here are some key points: Advantages … Read more
RStudio is an integrated development environment which allows us to interact with R more readily. RStudio is similar to the standard RGui, but it is considered more user-friendly. This IDE has various drop-down menus, windows with multiple tabs, and so many customization processes. The first time when we open RStudio, we will see three Windows. … Read more