Outstand using data || Data Science, AI and Tech
Data Scientist & Analytics Engineer
Tech Writer @KDnuggets @DataCamp @Medium
Inquiries ๐๐ปrfeers@gmail.com
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May 19 โข 12 tweets โข 4 min read
Struggling with Machine Learning algorithms? ๐ค
Then you better stay with me! ๐ค
Today we're expanding our simple Logistic Regression...
to classy more than 2 classes! ๐๐ป
By default, Logistic Regression is like a coin toss - heads or tails, A or B.
But what if you have multiple classes?
That's where we adapt our model for MULTIPLE CHOICES!
There are two main ways:
May 14 โข 6 tweets โข 2 min read
Struggling with Machine Learning algorithms? ๐ค
Then you better stay with me! ๐ค
Today we're expanding our simple Logistic Regression...
to classy more than 2 classes! ๐๐ป
By default, Logistic Regression is like a coin toss - heads or tails, A or B.
But what if you have multiple classes?
That's where we adapt our model for MULTIPLE CHOICES!
There are two main ways:
May 4 โข 6 tweets โข 3 min read
Ever feel like Python's simplicity is almost poetic?
Let's dive into the elegant world of Python's structures.
A journey of poetic logic awaits! ๐
1๏ธโฃ ๐ง๐๐ ๐๐ฅ๐ง ๐ข๐ ๐ช๐๐๐ง๐๐ฆ๐ฃ๐๐๐
Python's beauty lies in its simplicity.
Unlike other languages cluttered with braces and keywords, Python uses plain old indentation to define a program's structure.
It's like poetry for coders! ๐
May 3 โข 9 tweets โข 3 min read
Struggling to trust every chart you see? ๐ค๐
Then, you better learn the ๐ฃ๐ฟ๐ถ๐ป๐ฐ๐ถ๐ฝ๐น๐ฒ ๐ผ๐ณ ๐ฝ๐ฟ๐ผ๐ฝ๐ผ๐ฟ๐๐ถ๐ผ๐ป๐ฎ๐น ๐ถ๐ป๐ธ in Data Visualization
Today, I'm unveiling why some charts can be misleading. ๐ฅ
First things first, ever heard of the term "ink" in data visualization?
It's not about the ink in your pen.
It refers to any part of a visualization that stands out from the background.
Think lines, bars, points, and even text. ๐๏ธ
Apr 30 โข 7 tweets โข 3 min read
Struggling with Machine Learning algorithms? ๐ค
Then you better stay with me! ๐ค
We are going back to the basics to simplify ML algorithms.
... today's turn is Logistic Regression! ๐๐ป
1๏ธโฃ ๐๐ข๐๐๐ฆ๐ง๐๐ ๐ฅ๐๐๐ฅ๐๐ฆ๐ฆ๐๐ข๐ก
It is a binary classification model used to classify our input data into two main categories.
It can be extended to multiple classifications... but today we'll focus on a binary one.
Also known as Simple Logistic Regression.
Apr 28 โข 13 tweets โข 5 min read
Struggling with Machine Learning algorithms? ๐ค
Then you better stay with me! ๐ค
We are going back to the basics to simplify ML algorithms.
... today's turn is Multiple Linear Regression! ๐๐ป
In MLR, imagine you're baking.
You've got different ingredients or variables.
You need the perfect recipe (model) for your cake (prediction).
Each ingredient's quantity (coefficient) affects the taste (outcome).
Apr 27 โข 9 tweets โข 3 min read
Ever felt lost in Python's universe of data types? ๐
Then dive into the basics with me today!
Today we're exploring Booleans, Integers, and Floats โ the core elements in Python's data type galaxy! ๐๐
These data types are like the atoms of Python.
We start with them individually and later combine them into larger structures like lists and dictionaries.
It's a journey from simplicity to complexity!
Apr 26 โข 8 tweets โข 3 min read
Struggling to craft effective charts? ๐ค๐
Then, you better understand the ๐๐ฒ๐๐๐ฎ๐น๐ ๐ฃ๐ฟ๐ถ๐ป๐ฐ๐ถ๐ฝ๐น๐ฒ๐ in Data Visualization.
Today, I'm unveiling why some charts are intuitive while others are confusing ๐ฅ
Think of DataViz as your GPS in the world of numbers.
It turns complex data into clear, actionable insights.
But... why do some charts enlighten us while others don't?
The Gestalt Theory explains how our brains perceive patterns and how to take advantage of them.
Apr 25 โข 8 tweets โข 3 min read
Struggling with Machine Learning algorithms? ๐ค
Then you better stay with me! ๐ค
We are going back to the basics to simplify ML algorithms.
... today's turn is Multiple Linear Regression! ๐๐ป
4๏ธโฃ ๐ ๐จ๐๐ง๐-๐ฉ๐๐ฅ๐๐๐๐๐ ๐
We can add multiple variables to perform a MULTIPLE Linear Regression.
The core theory is the same: We still use a linear function to predict our target.
But we can track N independent values
So we can consider both Height and Gender โก๏ธ N=2
Apr 24 โข 13 tweets โข 5 min read
Ever felt confused by SQL's execution flow? ๐ค
Then you better stay with me!
Today let's exemplify SQL's execution order with a simple query๐๐ป
1๏ธโฃ ๐ฆ๐ง๐๐ฅ๐ง๐๐ก๐ ๐๐ฅ๐ข๐ ๐ข๐จ๐ฅ ๐ฅ๐๐ช ๐ง๐๐๐๐
We use a dummy table with the salary of employees depending on their field and experience,
๐ฏ Our main goal?
Understand the field that earns the most.
Mar 29 โข 12 tweets โข 2 min read
Want to become a SQL Pro and no idea where to start?
Then, you better...
๐ SAVE these 9 steps to become an SQL Pro! ๐
1๏ธโฃ ๐๐ผ๐๐ป๐ฑ๐ฎ๐๐ถ๐ผ๐ป๐ฎ๐น ๐ฆ๐ค๐:
Understand basics like SELECT, WHERE, JOIN, and ORDER BY.
We all need to start from the basics!
Feb 16 โข 8 tweets โข 3 min read
Struggling with Machine Learning algorithms? ๐ค
Then you better stay with me! ๐ค
Today I am starting with a new ML model
... so it is the turn of the Support Vector Machine! ๐๐ป
0๏ธโฃ ๐ฅ๐๐๐๐ฃ
SVM is a ML method that finds the optimal hyperplane separating classes by maximizing margin, using support vectors to ensure the greatest distance between class data points.
Jan 28 โข 12 tweets โข 4 min read
Struggling with Machine Learning algorithms? ๐ค
Then you better stay with me! ๐ค
Today we're expanding our simple Logistic Regression...
to classy more than 2 classes! ๐๐ป
By default, Logistic Regression is like a coin toss - heads or tails, A or B.
But what if you have multiple classes?
That's where we adapt our model for MULTIPLE CHOICES!
There are two main ways:
Jan 25 โข 9 tweets โข 3 min read
Are you the one crafting charts to communicate your data?
Then you better stay with me! ๐ค
Today let's dive into visual encoding and their key role in DataViz! ๐๐ป
Charts are composed of two core components:
- Data
- Visuals
But how do we convert this data into a visual representation?
Say hi to visual encodings! ๐๐ป
Jan 21 โข 13 tweets โข 5 min read
Struggling with Machine Learning algorithms? ๐ค
Then you better stay with me! ๐ค
Today we're exemplifying Logistic Regression...
all set to classify two adorable penguin species! ๐๐ป๐ง๐
1๏ธโฃ ๐๐๐ง๐ ๐๐๐ง๐๐๐ฅ๐๐ก๐ ๐ฃ๐๐๐ฆ๐
We're using Kaggle to find robust data for our flippered friends.
Meet our stars: the dapper Gentoo and the lovely Adelie!
Like biologists in the wild, we'll use data points to distinguish between them.
Jan 14 โข 12 tweets โข 4 min read
Struggling with Machine Learning algorithms? ๐ค
Then you better stay with me! ๐ค
Today I am starting with a new ML model
... so it is the turn of Logistic Regression! ๐๐ป
1๏ธโฃ ๐๐ข๐๐๐ฆ๐ง๐๐ ๐ฅ๐๐๐ฅ๐๐ฆ๐ฆ๐๐ข๐ก
It is a binary classification model used to classify our input data into two main categories.
It can be extended to multiple classifications... but today we'll focus on a binary one.
Also known as Simple Logistic Regression.
Jan 13 โข 6 tweets โข 2 min read
Ever feel like Python's simplicity is almost poetic?
Let's dive into the elegant world of Python's structures.
A journey of poetic logic awaits! ๐
1๏ธโฃ ๐ง๐๐ ๐๐ฅ๐ง ๐ข๐ ๐ช๐๐๐ง๐๐ฆ๐ฃ๐๐๐
Python's beauty lies in its simplicity.
Unlike other languages cluttered with braces and keywords, Python uses plain old indentation to define a program's structure.
It's like poetry for coders! ๐
Jan 12 โข 9 tweets โข 3 min read
Struggling with Machine Learning algorithms? ๐ค
Then you better stay with me! ๐ค
Today I am starting with a new ML model
... so it is the turn of Logistic Regression! ๐๐ป
0๏ธโฃ ๐ฅ๐๐๐๐ฃ
Logistic Regression is your go-to for predicting whether something is YES or NO.
It uses a slick curve to calculate probabilities and a special formula to minimize errors, ensuring your predictions are on point!
Jan 11 โข 8 tweets โข 3 min read
Ever stared at a chart and wondered what secret sauce makes it... well, a chart?
It's time to decode the magic behind those bars, lines, and pies.
Today's turn is for what (two) core elements compose the DataViz world! ๐จ๐
๐ช๐๐๐ง ๐ ๐๐๐ ๐๐๐ ๐๐๐๐ฅ๐ง๐ฆ ๐ง๐ข ๐ฅ๐๐๐๐๐ฌ ๐๐... ๐ ๐๐๐๐ฅ๐ง?
All charts share two main traits:
- They all communicate data.
- They all have a graphic design.
Jan 10 โข 7 tweets โข 3 min read
Struggling with Machine Learning algorithms? ๐ค
Then you better stay with me! ๐ค
Today I am starting with a new ML model
... so it is the turn of Logistic Regression! ๐๐ป
1๏ธโฃ ๐๐ข๐๐๐ฆ๐ง๐๐ ๐ฅ๐๐๐ฅ๐๐ฆ๐ฆ๐๐ข๐ก
It is a binary classification model used to classify our input data into two main categories.
It can be extended to multiple classifications... but today we'll focus on a binary one.
Also known as Simple Logistic Regression.
Jan 9 โข 11 tweets โข 3 min read
Struggling with long and complex SQL queries?
Last week, we dived into CTEs and their advantages.
Today, let's see them in action with a real-world example!๐๐ป
Imagine we have a table of all Airbnb apartments in Barcelona.