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Till now, we have seen imputation techniques that could only be used for Numerical variables but didn't say anything about the Categorical variables/column.   So now, we are going to discuss a technique that is mostly used for imputing categorical variables. Missing Category Imputation is the technique in which we add an additional category for the missing value, as "Missing" in the variable/column. In simple terms we do not take the load of predicting or calculating the value(like we did for Mean/Median or End tail Imputation ), we simply put "Missing" as the value.  Now, we may have a doubt that if we are only replacing the value with "Missing" then why it is said that this method can be used for Categorical variables only?  Here is the answer, we can use it for Numerical variables also, since we can't introduce a categorical value in the Numerical variables/column, we will be required to introduce some Numerical value that is unique for the va

Welcome to a series of articles about Imputation techniques. We will be publishing small articles(Quick Notes) about the various Imputation techniques used, their advantages, disadvantages, when to use and coding involved for them.  Not Sure What is Imputation?   &   What is Missing Data?    Why they are important. Click on the links to know more about them.   1. Mean Or Median Imputation 2.  End of tail Imputation  3. Missing Category Imputation 4. Random Sample Imputation 5. Missing Indicator Imputation 6. Mode Imputation 7. Arbitrary Value Imputation 8. Complete Case Analysis(CCA)  Python Libraries used for Quick & Easy Imputation.  09.  SimpleImputer   10. Feature Engine 11. Multi-Variate Imputation

Introduction  ExploriPy is yet another Python library used for Exploratory Data Analysis. This library pulled our attention because it is Quick & Easy to implement also simple to grasp the basics. Moreover, the visuals provided by this library are self-explanatory and are graspable by any new user.  The most interesting part that we can't resist mentioning  is the easy grouping of the variables in different sections. This makes it more straightforward to understand and analyze our data. The Four Major sections presented are:-  Null Values Categorical VS Target Continuous VS Target Continuous VS Continuous  

We had a look over the basics of EDA in our previous article  EDA - Exploratory Data Analysis . So now let's move ahead and look at how we can automate the process and the various APIs used for the same. We will be focusing on the 7 major libraries that can be used for the same. These are our personal favourites & we prefer to use them most of the time.  We will look into the libraries' & will cover the install, load, and analyse parts for each separately.  D-tale Pandas - Profiling Lux Sweetviz Autoviz ExploriPy Dora

  What is Imputation? Imputation is a technique used for replacing the missing data with some substitute value to retain most of the data/information of the dataset. These techniques are used because removing the data from the dataset every time is not feasible and can lead to a reduction in the size of the dataset to a large extend, which not only raises concerns for biasing the dataset but also leads to incorrect analysis. Fig 1:- Imputation Not Sure What is Missing Data? How it occurs? And its type? Have a look  HERE  to know more about it. Let’s understand the concept of Imputation from the above Fig {Fig 1}. In the above image, I have tried to represent the Missing data on the left table(marked in Red) and by using the Imputation techniques we have filled the missing dataset in the right table(marked in Yellow), without reducing the actual size of the dataset. If we notice here we have increased the column size, which is possible in Imputation(Adding “Missing” category imputation)

  Introduction Machine Learning seems to be a big fascinating term, which attracts a lot of people towards it, and knowing what all we can achieve through it makes the sci-fi imagination of ours jump to another level. No doubt in it, it is a great field and we can achieve everything from an automated reply system to a house cleaning robots, from recommending a movie or a product to help in detecting disease. Most of the things that we see today have already started using ML to better themselves. Though building a model is quite easy, the most challenging task is preprocessing the data and filtering out the Data of Use. So, here I am going to address one of the biggest and common issues that we face at the start of the journey of making a Good ML Model, which is  The   Missing Data . Missing Data can cause many issues and can lead to wrong predictions of our model, which looks like our model failed and started over again. If I have to explain in simple terms, data is like Fuel of our Mo