2022-04-14 21:43
If you are preparing for a Data Analyst or Data Engineer Role, SQL Interviews are a must. The most asked […]
The post Solve SQL: Left/Right Join two Tables on a Non-Unique Column appe… Read More
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What The Data Says Blog
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There is a vast world of Data out there.Let's learn to clean, wrangle and read the Data. I am learning and I am writing it down in my notebook. You want to take a peek? You are most welcome! If I am doing it wrong, please point it out. You have a different idea? Please share with me. Together we can learn, share and understand 'What the data says'!
2021-05-26 23:35
Let’s think of a fictional scenario. You were looking for a change in your job. You started navigating through a […]
The post Build your own Resume Scanner Using Python appeared… Read More
2021-05-12 18:10
This post is the repository of some python interview questions. The questions will range from basic theory questions to answering […]
The post 50 Python Interview Questions and Answe… Read More
2021-04-20 20:44
An expression that caught my attention recently is: Data is the new oil. I am not sure who used the […]
The post Solve SQL: SQL Exercises and Solutions in MySQL appeared first on My D… Read More
2021-03-25 23:19
Were you a fan of Donald Trump’s tweets? On a boring gloomy day, did you browse through his tweets to […]
The post Generate Tweets/Text in Donald Trump Style using LSTM appeared… Read More
2021-03-01 18:11
I created my first Deep Learning Model to generate Text using LSTM. The basic model ran for a few hours […]
The post Run your Deep Learning Model at Google Colab – Fast and Free… Read More
2021-02-25 18:41
Deep Learning is a topic that I had been avoiding for some time now. Somehow, its potential is intimidating. I […]
The post Deep Learning Model to Generate Text using Keras LSTM appea… Read More
2021-02-19 23:31
Do you work in Jupyter Notebooks and have an issue in installing and hence importing Keras? Well, you are at […]
The post How to Install and Import Keras in Anaconda/Jupyter Notebooks… Read More
2021-02-02 01:46
I am in awe of Scikit-learn. I have always used scikit-learn for data modeling and metrics. But I had no […]
The post Scikit-learn – A one-stop solution in Machine Learning appe… Read More
2020-12-04 19:41
Deploying an application on Heroku was a bit challenging. Although there are a lot of great posts and tutorials, I […]
The post Build and deploy a multi-page Flask application on Hero… Read More
2020-12-04 18:56
While running a Flask application initially, an error that popped up, again and again, is :[Errno 98] Address already in […]
The post Flask Error: [Errno 98] Address already in use ap… Read More
2020-11-23 18:19
In my previous post, I created a Twitter Sentiment Analysis Application and worked on deploying the app. Honestly, it was […]
The post Heroku Setup Guide On Mac OSx to Deploy a Python… Read More
2020-10-13 18:39
I worked for some time on different machine learning projects and writing blogs. But now, what I really wanted is […]
The post Deploy Your First Machine Learning Model using Flask app… Read More
2020-09-16 18:02
Introduction: Are you a Harry Potter fan? Well, it doesn’t matter. I will tell you what this post is all […]
The post Harry Potter Invisibility Cloak Using Python OpenCV appeare… Read More
2020-09-02 22:15
This post is a Python solution to the Codility CyclicRotation problem (Lesson 2 – Arrays) which scored 100%. Now, Let’s understand the problem first.
CyclicRota… Read More
2020-09-01 18:26
This post is a Python solution to the Codility BinaryGap problem (Lesson 1 – Iterations) which scored 100%. Now, Let’s understand the problem first.
BinaryGap P… Read More
2020-08-04 17:59
Ms. Happie and Ms. Saddie
Sentiment Analysis or Emotion Detection from Text is useful in many ways. To understand your customers or to integrate chatBots or analyze feedback and reviews… Read More
2020-07-08 18:45
I really wonder how some people can remember everything so well! Maybe the key is PRACTICE? Oh, it is definitely Practice!
Well, I did not get that awareness from my own action. It came… Read More
2020-06-25 18:03
Have you ever meet a Chatbot or chatterbot? Of course, you have! It is everywhere nowadays. I have met an annoying one, a smart one, and even a kind one. So, let’s start at the v… Read More
2020-06-17 18:38
Human emotions are complex. And it is more complicated when people are trying to put them in words. Then, there are sarcasm and satire. Without knowing the context or the person, it is diffi… Read More
2020-06-08 19:43
In my last post, I worked on Detecting Face and Eyes in an Image using Python. In this post, I will extend the same functionality, but on a Live Image. Now, Live Image means, it will open th… Read More
2020-06-03 18:43
Introduction:
I have not yet worked with images and I had to give it a try. But where to begin? I started looking for Data. Of course, I checked Kaggle and downloaded some image data fi… Read More
2020-04-27 19:07
What is a Twitter Trend?A trend on Twitter refers to a hashtag-driven topic that is immediately popular at a particular time.How are trends determined?A per the Twitter FAQ, Trends are deter… Read More
2020-04-21 18:19
I am in love with Tweepy! There are so many amazing things we can do using Tweepy!In my last post, I tried the search() method to look for some hashtags from Twitter. This method looks for t… Read More
2020-04-13 19:36
In my last post, I worked on connecting Twitter and collecting tweets on #Corona using Tweepy. So now that we have collected some tweets, let's work on cleaning and analyzing those tex… Read More
2020-04-06 23:55
With the #Corona and #StayHome trending throughout the world, I got curious about what's going on in people's minds? How Moms are reacting with the school closed until next session or how th… Read More
2020-03-11 19:27
Applications: Predict Stock prices, house prices, sales, etc.Linear Regression: This refers to a linear relationship between two or more variables. If we draw this relationship in… Read More
2020-01-21 20:24
Sample Space:Set of all possible outcomes of a random experiment.For a die-rolling experiment, we can write the sample space as S = {1, 2, 3, 4, 5, 6}Probability:Probability is how… Read More
2020-01-14 21:11
Write a Python program to calculate the sum of all the elements in a list: Read More
2019-11-13 21:32
Must Remember Concepts in Data Science
1. Supervised Machine Learning:
Supervised learning is where we have input variables (X) and an output variable (Y) and we use an… Read More
2019-11-13 21:32
Must Remember Concepts in Data Science 1. Supervised Machine Learning: Supervised learning is where we have input variables (X) and an output variable (Y) and we use an algorithm t… Read More
2019-11-06 18:34
In this post, I will add and update the probable behavioral interview questions. The answers will vary from person to person. So, it is just a repository of the questions. 1. Tell… Read More
2019-10-15 19:22
I was trying to read a CSV file in Python using the below command and got an error. import pandas as pd df = pd.read_csv("users.csv")Error: UnicodeDecodeError: 'utf-8' codec can't… Read More
2019-08-27 17:03
There are some small but important things that we keep on doing on a daily basis and then keep on forgetting. Here's another one:Convert Integer To Boolean And Boolean To Integer Values in P… Read More
2019-08-26 23:30
There are some small but important things that we keep on doing on a daily basis and keep on forgetting. Here's one:Drop one or more Columns In Pandas DataframeSo, Let's keep it simple and d… Read More
2019-06-20 23:54
What is Scraping?Web Scraping is a technique for fetching and then extracting information from websites. Every website hosts information over the web in the form of HTML or some static text… Read More
2019-06-10 18:16
1. What is Python?Python is an object-oriented, open source, a high-level general purpose programming language with automated memory management.2.Why should we use Python?Open Source Framewo… Read More
2019-03-25 18:25
Bot Saves Princess-2 problem in Hackerrank is more or less similar to the first Bot Saves Princess problem. But it took me some time to understand what the problem is and wha… Read More
2019-03-07 01:21
Bot Saves Princess problem is Hackerrank is the kind of game that I used to play a lot when I was a child. But I have never thought of writing code to save some Princess Peach who is tr… Read More
2019-02-27 19:55
Stock Predictions problem in Hackerrank is listed as easy and surprisingly I struggled a lot to get a decent score. I hope to learn a little more about the investment strategies that actuall… Read More
2019-02-20 19:21
Laptop Battery Life Challenge is an illustration which demonstrates the importance of analyzing the data before thinking of any ML solution to the problem. The Problem is as below: Fred… Read More
2019-02-16 00:37
Hackerrank is my latest amazing and scary discovery. It's amazing because I get to solve a problem with ready test cases and I can submit my solutions unlimited time and moreover I get some… Read More
2019-01-23 20:58
I am introduced to GraphLab Create in Machine Learning Foundation Course by Washington University in Coursera and it is truly an amazing find. Let's not go into the detailed story… Read More
2019-01-17 17:45
I am following R programming language for some time. But sometimes, I wonder how Python would have worked in those scenarios. After all, Python has more followers. So, one fine morning… Read More
2018-11-07 19:50
Neural Network For Machine Learning from Coursera is a difficult subject. In the end, I learned a lot of new things and likewise, I did not understand a few. I want to start summarizing… Read More
2018-10-11 18:52
Text Analytics is an interesting but tricky subject. It is not easy to decipher sentiments from some words. It gets complex since we, people are so good at sarcasm. So, let's take some baby… Read More
2018-07-20 22:42
I needed a break from the neural network and even machine learning algorithms. All those formulae for mathematical representation, the complexity of all those algorithms was getting on my ne… Read More
2018-07-12 00:43
What is a FeedForward Neural Network?In FeedForward Neural Network, the Perceptrons are arranged in layers, with the first layer taking in inputs (Input Layer) and the last layer producing o… Read More
2018-07-11 20:19
While practicing the Neural Network exercise from Andrew Ng course in R, I got stuck at the first step. The data file is in .mat format and I wanted to read the files in… Read More
2018-06-18 22:28
It is the high time now that I slide my feet in the vast ocean of Neural Network. I was avoiding it for some time.At the first place, I wanted to use Neural Network for the Hand Written Digi… Read More
2018-06-12 19:17
Multinomial Logistic Regression is a classification method that generalizes Logistic Regression to multiclass problems i.e. with more than two possible discrete outcomes. So, can we use… Read More
2018-06-11 17:10
As the story goes, I was going through the Neural Network Exercise from the Andrew Ng Course of Machine Learning. I converted the .mat file to a .csv file long back. The steps… Read More
2018-06-08 20:39
I converted the .mat file from the Andrew Ng Course to a .csv file long back. The steps are mentioned in another post here. But then, it took me some time and lots of effort to finally pract… Read More
2018-05-25 19:11
Now, as I am trying to understand the mathematical side of the different Algorithms, it is getting messy, blur and cloudy in my head. That's why I decided to write all the formulae at one pl… Read More
2018-05-17 19:26
I thought of practicing the Neural Network exercise from Andrew Ng course in R and got stuck at the first step. The data file is in .mat format and I wanted to convert it in a .csv file. Aft… Read More
2018-05-11 20:37
I was avoiding the Neural Network Algorithms for some time since the name only was dreadful. It is always linked with Artificial Intelligence, Deep Learning and I always thought that it must… Read More
2018-05-04 20:02
"Height" is a slightly delicate issue for me. I stopped growing at 5 feet. I always wonder "How Tall My Daughter Will Be @ 18?" Then one day, I asked myself, "What the Data Says"?W… Read More
2018-04-19 21:29
Logistic Regression Model is a popular Machine Learning Algorithm used for Classification problems. Thus, Logistic Regression can be used to predict the risk of developing a diseas… Read More
2018-02-22 05:55
A Multivariate Linear Regression Model is a Linear approach for illustrating a relationship between a dependent variable (say Y) and multiple independent variables or features(say X1, X… Read More
2018-02-15 18:31
Before starting my journey in Machine Learning, I knew that it would require some concepts of Mathematics. But while learning the supervised algorithms in R, I left behind the math part.So… Read More
2018-02-09 18:58
I think, whoever starts to learn Machine Learning, checks out the Machine Learning Class by Andrew Ng. I was not an exception. But the mathematical equations and all the formulae made me rea… Read More
2018-02-08 01:07
I was trying to follow the Machine Learning class of Andrew Ng and was soon got overwhelmed with all the mathematical representations and the equations. I decided to take small baby steps an… Read More
2018-02-02 21:16
Before starting my journey in Machine Learning, I knew that it would require some concepts of Mathematics. But while learning the supervised algorithms in R, I left behind the math part.So… Read More
2018-01-25 22:03
Text Analytics is such an interesting topic and I was trying to understand where to start from. The first thing that caught my attention in any blogs or tutorials about Text Analytics i… Read More
2018-01-25 01:20
Text Analytics is interesting but challenging. I started with a simple goal to create a "WordCloud" using R. I thought of using the datasets from the Kaggle competition "Sentiment Analysis o… Read More
2018-01-24 20:21
I was trying my hands on the Kaggle competition "Sentiment Analysis on Movie Reviews" and was stuck at the first step itself. The Data files are in ".tsv" format, which is tab delimited and… Read More
2018-01-24 01:44
I was browsing the competitions in Kaggle with Category as "Getting Started" and the one that caught my attention is "Bag of Words Meets Bags of Popcorn". This competition is about Sentiment… Read More
2018-01-18 19:58
A visual or graphical representation of a dataset can be intriguing. Before getting into any formal methods, it helps one to form an intuition about the important characteristics a… Read More
2018-01-18 19:57
A Histogram is a graphical presentation to understand the distribution of a Continuous Variable.To create a histogram, the first step is to "bin" the range of values i.e. divide the&nbs&hell…Read More
2018-01-17 20:06
A Barplot is the graphical representation of categorical data with some rectangular bars whose height is proportional to the value that they represent. Barplots are useful to represent… Read More
2018-01-17 19:53
A Boxplot is usually used to understand the distribution of a continuous variable. Through box plots, we can display the minimum, lower quartile (25th percentile), median (50th per… Read More
2018-01-16 20:37
A scatter plot is usually used to understand the nature of the relationship between two continuous variables. Thus, a scatter plot combines the values of two quantitative variables… Read More
2018-01-16 20:35
A Jitter Plot is almost same as the scatter plot that I discussed in my last post. It took me some time to figure out how it is different. So, here is my understanding explained with an… Read More
2018-01-12 18:31
2018-01-11 05:25
I was trying my hands on the Digit Recognizer Competition in Kaggle and I was paralyzed. I was not able to understand how to proceed on this. I took a few deep breaths and told myself "one s… Read More
2018-01-03 21:33
There can be various ways of Grouping the Machine Learning Algorithms. The most common way is to organize the Algorithms based on Learning Style and following are the categories: 1. Supervi… Read More
2018-01-03 21:32
Decision Tree is a type of Supervised Learning where the sample is split into two or more homogeneous sets based on some significant splitter or differentiator in input variables.T… Read More
2017-12-21 21:33
Problem:What does Logarithm of a number actually mean?Solution:Today, while working on a Dataset, I came across a Kernel from Kaggle, where it is using Log(x) to handle Skewed Distribution o… Read More
2017-12-18 20:37
Problem:How to display NA records while using table() in R?Solution:In R, we can use the Table() function to return the count of observations for each level of a Factor variable. Let's… Read More
2017-12-13 21:26
Problem:"NAs introduced by coercion" Error in Titanic Random Forest Model.Solution:While creating my first Random Forest model on Titanic Dataset, I got the below Error:This error occurs&nbs&hell…Read More
2017-12-13 21:25
Random Forest is a popular algorithm for Machine Learning which can be used both for Regression and Classification tasks. The concept (definition) of this algorithm is explained in its name… Read More
2017-12-08 20:51
Logistic Regression is a technique to predict a Categorical Variable Outcome based on one or more input variable(s). Logistic Regression is a classification algorithm. For binary categorical… Read More
2017-12-04 22:28
Linear Regression is a technique to predict the value of an output variable based on one or more input variable(s).The purpose of Linear Regression is to model a continuous variable Y as a m… Read More
2017-11-10 01:54
Problem:Getting "unused argument" error while using Select ()Function from Dplyr.Solution:I have used the select () function from Dplyr before and it worked perfectly. But today suddenl… Read More
2017-11-09 19:32
Problem:Replace/Rename the Level Value of a Factor Variable in R Solution:Suppose we have a Dataset where we have a Factor Column. Now, the requirement is to change the existing factor level… Read More
2017-11-08 21:02
Problem:Create an Exploratory Plot in RSolution:Data Visualization is communicating the data in a graphical format. We can create our first plot in R using the plot() function. If you h… Read More
2017-11-08 20:21
Do you have trouble getting a sample DataSet while practicing R? I did! But now, I have learned that there are some in-built DataSets in R which we can use for practice. So, now it is easy t… Read More
2017-11-08 19:28
What is Data Visualization?Data Visualization is an approach for summarizing and visualizing the important characteristics and statistical properties of a Dataset. Once we get a Dataset… Read More
2017-11-08 06:28
Problem:Check the different Levels of a Factor Column in R Solution:The Elements of a Factor are called Levels. Suppose, we have loaded a DataSet into a DataFrame in R. Now, w… Read More
2017-10-27 19:57
Machine Learning is quite a big word for me. And I am just starting to soak my feet in that vast ocean of knowledge. I googled many times with different keyword to understand what exactly is… Read More
2017-10-24 18:53
The for loop executes the same code again and again for a specific number of times.Problem:Write a for loop in RSolution:The simple syntax of for loop is as below:for(variable in sequence){e… Read More
2017-10-24 17:28
The while loop executes the same code again and again until a stop condition is met.Problem:Write a while loop in RSolution:The simple syntax of while loop is as below:while(condition){expre… Read More
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