Data Science Machine Learning Data Analysis
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1- Data Science
2- Machine Learning
3- Data Visualization
4- Artificial Intelligence
5- Data Analysis
6- Statistics
7- Deep Learning

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😀 Introduction to Machine Learning – Laurent Younes

Looking for a clear and concise introduction to machine learning? This book by Laurent Younes provides a solid foundation in ML concepts, from theory to practical applications.

Perfect for students, researchers, and enthusiasts aiming to build a strong understanding of the core principles behind modern machine learning.

📄 Read the Book (PDF)
🔗 Shared via @DataScinceM

#MachineLearning #ML #AI #DeepLearning #DataScience #Python #MathForML #Books #LearningResources #MLBooks #OpenSourceKnowledge


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🥇 40+ Real and Free Data Science Projects

👨🏻‍💻 Real learning means implementing ideas and building prototypes. It's time to skip the repetitive training and get straight to real data science projects!

🔆 With the DataSimple.education website, you can access 40+ data science projects with Python completely free ! From data analysis and machine learning to deep learning and AI.

✏️ There are no beginner projects here; you work with real datasets. Each project is well thought out and guides you step by step. For example, you can build a stock forecasting model, analyze customer behavior, or even study the impact of major global events on your data.

🏳️‍🌈 40+ Python Data Science Projects
🌎 Website

#DataScience #PythonProjects #MachineLearning #DeepLearning #AIProjects #RealWorldData #OpenSource #DataAnalysis #ProjectBasedLearning #LearnByBuilding


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𝗬𝗼𝘂𝗿_𝗗𝗮𝘁𝗮_𝗦𝗰𝗶𝗲𝗻𝗰𝗲_𝗜𝗻𝘁𝗲𝗿𝘃𝗶𝗲𝘄_𝗦𝘁𝘂𝗱𝘆_𝗣𝗹𝗮𝗻.pdf
7.7 MB
1. Master the fundamentals of Statistics

Understand probability, distributions, and hypothesis testing

Differentiate between descriptive vs inferential statistics

Learn various sampling techniques

2. Get hands-on with Python & SQL

Work with data structures, pandas, numpy, and matplotlib

Practice writing optimized SQL queries

Master joins, filters, groupings, and window functions

3. Build real-world projects

Construct end-to-end data pipelines

Develop predictive models with machine learning

Create business-focused dashboards

4. Practice case study interviews

Learn to break down ambiguous business problems

Ask clarifying questions to gather requirements

Think aloud and structure your answers logically

5. Mock interviews with feedback

Use platforms like Pramp or connect with peers

Record and review your answers for improvement

Gather feedback on your explanation and presence

6. Revise machine learning concepts

Understand supervised vs unsupervised learning

Grasp overfitting, underfitting, and bias-variance tradeoff

Know how to evaluate models (precision, recall, F1-score, AUC, etc.)

7. Brush up on system design (if applicable)

Learn how to design scalable data pipelines

Compare real-time vs batch processing

Familiarize with tools: Apache Spark, Kafka, Airflow

8. Strengthen storytelling with data

Apply the STAR method in behavioral questions

Simplify complex technical topics

Emphasize business impact and insight-driven decisions

9. Customize your resume and portfolio

Tailor your resume for each job role

Include links to projects or GitHub profiles

Match your skills to job descriptions

10. Stay consistent and track progress

Set clear weekly goals

Monitor covered topics and completed tasks

Reflect regularly and adapt your plan as needed


#DataScience #InterviewPrep #MLInterviews #DataEngineering #SQL #Python #Statistics #MachineLearning #DataStorytelling #SystemDesign #CareerGrowth #DataScienceRoadmap #PortfolioBuilding #MockInterviews #JobHuntingTips


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Over the last year, several articles have been written to help candidates prepare for data science technical interviews. These resources cover a wide range of topics including machine learning, SQL, programming, statistics, and probability.

1️⃣ Machine Learning (ML) Interview
Types of ML Q&A in Data Science Interview
https://shorturl.at/syN37

ML Interview Q&A for Data Scientists
https://shorturl.at/HVWY0

Crack the ML Coding Q&A
https://shorturl.at/CDW08

Deep Learning Interview Q&A
https://shorturl.at/lHPZ6

Top LLMs Interview Q&A
https://shorturl.at/wGRSZ

Top CV Interview Q&A [Part 1]
https://rb.gy/51jcfi

Part 2
https://rb.gy/hqgkbg

Part 3
https://rb.gy/5z87be

2️⃣ SQL Interview Preparation
13 SQL Statements for 90% of Data Science Tasks
https://rb.gy/dkdcl1

SQL Window Functions: Simplifying Complex Queries
https://t.ly/EwSlH

Ace the SQL Questions in the Technical Interview
https://lnkd.in/gNQbYMX9

Unlocking the Power of SQL: How to Ace Top N Problem Questions
https://lnkd.in/gvxVwb9n

How To Ace the SQL Ratio Problems
https://lnkd.in/g6JQqPNA

Cracking the SQL Window Function Coding Questions
https://lnkd.in/gk5u6hnE

SQL & Database Interview Q&A
https://lnkd.in/g75DsEfw

6 Free Resources for SQL Interview Preparation
https://lnkd.in/ghhiG79Q

3️⃣ Programming Questions
Foundations of Data Structures [Part 1]
https://lnkd.in/gX_ZcmRq

Part 2
https://lnkd.in/gATY4rTT

Top Important Python Questions [Conceptual]
https://lnkd.in/gJKaNww5

Top Important Python Questions [Data Cleaning and Preprocessing]
https://lnkd.in/g-pZBs3A

Top Important Python Questions [Machine & Deep Learning]
https://lnkd.in/gZwcceWN

Python Interview Q&A
https://lnkd.in/gcaXc_JE

5 Python Tips for Acing DS Coding Interview
https://lnkd.in/gsj_Hddd

4️⃣ Statistics
Mastering 5 Statistics Concepts to Boost Success
https://lnkd.in/gxEuHiG5

Mastering Hypothesis Testing for Interviews
https://lnkd.in/gSBbbmF8

Introduction to A/B Testing
https://lnkd.in/g35Jihw6

Statistics Interview Q&A for Data Scientists
https://lnkd.in/geHCCt6Q

5️⃣ Probability
15 Probability Concepts to Review [Part 1]
https://lnkd.in/g2rK2tQk

Part 2
https://lnkd.in/gQhXnKwJ

Probability Interview Q&A [Conceptual Questions]
https://lnkd.in/g5jyKqsp

Probability Interview Q&A [Mathematical Questions]
https://lnkd.in/gcWvPhVj

🔜 All links are available in the GitHub repository:
https://lnkd.in/djcgcKRT

#DataScience #InterviewPrep #MachineLearning #SQL #Python #Statistics #Probability #CodingInterview #AIBootcamp #DeepLearning #LLMs #ComputerVision #GitHubResources #CareerInDataScience


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If you are doing regression modeling in Python for explanatory purposes, don't use scikit-learn - it's not set up for explanatory modeling. Use #statsmodels. It's set up much better for immediately showing you all the underlying parameters of your model and helping you interpret your results..

#analytics #peopleanalytics #datascience #rstats #python

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Topic: Handling Datasets of All Types – Part 1 of 5: Introduction and Basic Concepts

---

1. What is a Dataset?

• A dataset is a structured collection of data, usually organized in rows and columns, used for analysis or training machine learning models.

---

2. Types of Datasets

Structured Data: Tables, spreadsheets with rows and columns (e.g., CSV, Excel).

Unstructured Data: Images, text, audio, video.

Semi-structured Data: JSON, XML files containing hierarchical data.

---

3. Common Dataset Formats

• CSV (Comma-Separated Values)

• Excel (.xls, .xlsx)

• JSON (JavaScript Object Notation)

• XML (eXtensible Markup Language)

• Images (JPEG, PNG, TIFF)

• Audio (WAV, MP3)

---

4. Loading Datasets in Python

• Use libraries like pandas for structured data:

import pandas as pd
df = pd.read_csv('data.csv')


• Use libraries like json for JSON files:

import json
with open('data.json') as f:
data = json.load(f)


---

5. Basic Dataset Exploration

• Check shape and size:

print(df.shape)


• Preview data:

print(df.head())


• Check for missing values:

print(df.isnull().sum())


---

6. Summary

• Understanding dataset types is crucial before processing.

• Loading and exploring datasets helps identify cleaning and preprocessing needs.

---

Exercise

• Load a CSV and JSON dataset in Python, print their shapes, and identify missing values.

---

#DataScience #Datasets #DataLoading #Python #DataExploration

https://yangx.top/DataScienceM
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Topic: Handling Datasets of All Types – Part 2 of 5: Data Cleaning and Preprocessing

---

1. Importance of Data Cleaning

• Real-world data is often noisy, incomplete, or inconsistent.

• Cleaning improves data quality and model performance.

---

2. Handling Missing Data

Detect missing values using isnull() or isna() in pandas.

• Strategies to handle missing data:

* Remove rows or columns with missing values:

df.dropna(inplace=True)


* Impute missing values with mean, median, or mode:

df['column'].fillna(df['column'].mean(), inplace=True)


---

3. Handling Outliers

• Outliers can skew analysis and model results.

• Detect outliers using:

* Boxplots
* Z-score method
* IQR (Interquartile Range)

• Handle by removal or transformation.

---

4. Data Normalization and Scaling

• Many ML models require features to be on a similar scale.

• Common techniques:

* Min-Max Scaling (scales values between 0 and 1)

* Standardization (mean = 0, std = 1)

from sklearn.preprocessing import StandardScaler

scaler = StandardScaler()
df_scaled = scaler.fit_transform(df[['feature1', 'feature2']])


---

5. Encoding Categorical Variables

• Convert categorical data into numerical:

* Label Encoding: Assigns an integer to each category.

* One-Hot Encoding: Creates binary columns for each category.

pd.get_dummies(df['category_column'])


---

6. Summary

• Data cleaning is essential for reliable modeling.

• Handling missing values, outliers, scaling, and encoding are key preprocessing steps.

---

Exercise

• Load a dataset, identify missing values, and apply mean imputation.

• Detect outliers using IQR and remove them.

• Normalize numeric features using standardization.

---

#DataCleaning #DataPreprocessing #MachineLearning #Python #DataScience

https://yangx.top/DataScienceM
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Topic: Handling Datasets of All Types – Part 2 of 5: Data Cleaning and Preprocessing

---

1. Importance of Data Cleaning

• Real-world data is often noisy, incomplete, or inconsistent.

• Cleaning improves data quality and model performance.

---

2. Handling Missing Data

Detect missing values using isnull() or isna() in pandas.

• Strategies to handle missing data:

* Remove rows or columns with missing values:

df.dropna(inplace=True)


* Impute missing values with mean, median, or mode:

df['column'].fillna(df['column'].mean(), inplace=True)


---

3. Handling Outliers

• Outliers can skew analysis and model results.

• Detect outliers using:

* Boxplots
* Z-score method
* IQR (Interquartile Range)

• Handle by removal or transformation.

---

4. Data Normalization and Scaling

• Many ML models require features to be on a similar scale.

• Common techniques:

* Min-Max Scaling (scales values between 0 and 1)

* Standardization (mean = 0, std = 1)

from sklearn.preprocessing import StandardScaler

scaler = StandardScaler()
df_scaled = scaler.fit_transform(df[['feature1', 'feature2']])


---

5. Encoding Categorical Variables

• Convert categorical data into numerical:

* Label Encoding: Assigns an integer to each category.

* One-Hot Encoding: Creates binary columns for each category.

pd.get_dummies(df['category_column'])


---

6. Summary

• Data cleaning is essential for reliable modeling.

• Handling missing values, outliers, scaling, and encoding are key preprocessing steps.

---

Exercise

• Load a dataset, identify missing values, and apply mean imputation.

• Detect outliers using IQR and remove them.

• Normalize numeric features using standardization.

---

#DataCleaning #DataPreprocessing #MachineLearning #Python #DataScience

https://yangx.top/DataScience4M
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