Data Manipulation

FEATURE ENGINEERING & DATA PRE-PROCESSING — Feature engineering and Data Pre-Processing are the most significant topics in data science. In a general opinion, %80 of the work is data preprocessing, and %20 of the work is modeling in a machine learning project, therefore, there are issues to be considered. …

One of the most interesting and challenging parts of exploring your data in order to revamp it and get the best picture out of it is Data Manipulation Here I will discuss some of the points that should be kept in mind while exploring your data using Python library Pandas…

有時候我們會想要分組計算一些統計量，所以會使用 group_by(GROUP_LABEL) 並結合 summarize(STAT = FUN(VARIABLE)) 來得到想要的分組後的統計量。例如這個 minimal example library(dplyr) library(tidyr) df <- bind_cols(diversity_rank …

Welcome back to the next installment of my learning journey. In this chapter, I’ll be unlocking the door to the world of database design and management, using primary and foreign keys. …

Be it any profession in data science we all agree to the point that bringing the data to the right format takes up a lot of time ….. In this tutorial we are going to go through a workflow which talks about three scenarios of Data Manipulation where a lot’s…

A data frame is a two-dimensional data structure used to store data just like in a spreadsheet. Data Frames can have different types of data inside them. While the first column can be a character, the second and third can be numeric or logical. However, each column should have the…

Course Description Say you’ve found a great dataset and would like to learn more about it. How can you start to answer the questions you have about the data? You can use dplyr to answer those questions — it can also help with basic transformations of your data. You’ll also learn…

Hello! If you have landed on this blog, I am pretty sure you come from a non-programming background and are considering the option whether to learn R or not. After all R is a programming language and you don’t know even the basics of programming! You are having self- doubts…