Data Science & Machine Learning – Telegram
Data Science & Machine Learning
73.8K subscribers
801 photos
2 videos
68 files
700 links
Join this channel to learn data science, artificial intelligence and machine learning with funny quizzes, interesting projects and amazing resources for free

For collaborations: @love_data
Download Telegram
GitHub Profile Tips for Data Scientists 🧠📊

Your GitHub = your portfolio. Make it show skills, tools, and thinking.

1️⃣ Profile README
• Who you are & what you work on
• Mention tools (Python, Pandas, SQL, Scikit-learn, Power BI)
• Add project links & contact info
Example:
“Aspiring Data Scientist skilled in Python, ML & visualization. Love solving business problems with data.”

2️⃣ Highlight 3–6 Strong Projects
Each repo must have:
• Clear README:
– What problem you solved
– Dataset used
– Key steps (EDA → Model → Results)
– Tools & libraries
• Jupyter notebooks (cleaned + explained)
• Charts & results with conclusions
Tip: Include PDF/report or dashboard screenshots

3️⃣ Project Ideas to Include
• Sales insights dashboard (Power BI or Tableau)
• ML model (churn, fraud, sentiment)
• NLP app (text summarizer, topic model)
• EDA project on Kaggle dataset
• SQL project with queries & joins

4️⃣ Show Real Workflows
• Use .py noscripts + .ipynb notebooks
• Add data cleaning + preprocessing steps
• Track experiments (metrics, models tried)

5️⃣ Regular Commits
• Update notebooks
• Push improvements
• Show learning progress over time

📌 Practice Task:
Pick 1 project → Write full README → Push to GitHub today

💬 Tap ❤️ for more!
8👍3
Data Science Mistakes Beginners Should Avoid ⚠️📉

1️⃣ Skipping the Basics
• Jumping into ML without Python, Stats, or Pandas
Build strong foundations in math, programming & EDA first

2️⃣ Not Understanding the Problem
• Applying models blindly
• Irrelevant features and metrics
Always clarify business goals before coding

3️⃣ Treating Data Cleaning as Optional
• Training on dirty/incomplete data
Spend time on preprocessing — it’s 70% of real work

4️⃣ Using Complex Models Too Early
• Overfitting small datasets
• Ignoring simpler, interpretable models
Start with baseline models (Logistic Regression, Decision Trees)

5️⃣ No Evaluation Strategy
• Relying only on accuracy
Use proper metrics (F1, AUC, MAE) based on problem type

6️⃣ Not Visualizing Data
• Missed outliers and patterns
Use Seaborn, Matplotlib, Plotly for EDA

7️⃣ Poor Feature Engineering
• Feeding raw data into models
Create meaningful features that boost performance

8️⃣ Ignoring Domain Knowledge
• Features don’t align with real-world logic
Talk to stakeholders or do research before modeling

9️⃣ No Practice with Real Datasets
• Kaggle-only learning
Work with messy, real-world data (open data portals, APIs)

🔟 Not Documenting or Sharing Work
• No GitHub, no portfolio
Document notebooks, write blogs, push projects online

💬 Tap ❤️ for more!
10
📊 𝗗𝗮𝘁𝗮 𝗔𝗻𝗮𝗹𝘆𝘁𝗶𝗰𝘀 𝗙𝗥𝗘𝗘 𝗖𝗲𝗿𝘁𝗶𝗳𝗶𝗰𝗮𝘁𝗶𝗼𝗻 𝗖𝗼𝘂𝗿𝘀𝗲😍

🚀Upgrade your skills with industry-relevant Data Analytics training at ZERO cost 

Beginner-friendly
Certificate on completion
High-demand skill in 2026

𝐋𝐢𝐧𝐤 👇:- 

https://pdlink.in/497MMLw

📌 100% FREE – Limited seats available!
2🥰1
Python Libraries & Tools You Should Know 🐍💼

Mastering the right Python libraries helps you work faster, smarter, and more effectively in any data role.

🔷 1️⃣ For Data Analytics 📊
Useful for cleaning, analyzing, and visualizing data
pandas – Handle and manipulate structured data (tables)
numpy – Fast numerical operations, arrays, math
matplotlib – Basic data visualizations (charts, plots)
seaborn – Statistical plots, easier visuals with pandas
openpyxl – Read/write Excel files
plotly – Interactive visualizations and dashboards

🔷 2️⃣ For Data Science 🧠
Used for statistics, experimentation, and storytelling
scipy – Scientific computing, probability, optimization
statsmodels – Statistical testing, linear models
sklearn – Preprocessing + classic ML algorithms
sqlalchemy – Work with databases using Python
Jupyter – Interactive notebooks for code, text, charts
dash – Create dashboard apps with Python

🔷 3️⃣ For Machine Learning 🤖
Build and train predictive and deep learning models
scikit-learn – Core ML: regression, classification, clustering
TensorFlow – Deep learning by Google
PyTorch – Deep learning by Meta, flexible and research-friendly
XGBoost – Popular for gradient boosting models
LightGBM – Fast boosting by Microsoft
Keras – High-level neural network API (runs on TensorFlow)

💡 Tip:
• Learn pandas + matplotlib + sklearn first
• Add ML/DL libraries based on your goals

💬 Tap ❤️ for more!
10
Natural Language Processing (NLP) Basics – Tokenization, Embeddings, Transformers 🧠🗣️

NLP is the branch of AI that deals with how machines understand human language. Let's break down 3 core concepts:

1️⃣ Tokenization – Breaking Text Into Pieces
Tokenization means splitting a sentence or paragraph into smaller units like words or subwords.
Why it's needed: Models can’t understand full sentences — they process numbers, not raw text.
Types:
Word Tokenization – “I love NLP” → [“I”, “love”, “NLP”]
Subword Tokenization – “unbelievable” → [“un”, “believ”, “able”]
Sentence Tokenization – Splits a paragraph into sentences
Tools: NLTK, SpaCy, Hugging Face Tokenizers

2️⃣ Embeddings – Turning Text Into Numbers
Words need to be converted into vectors (numbers) so models can work with them.
What it does: Captures semantic meaning — similar words have similar embeddings.
Common Methods:
One-Hot Encoding – Basic, high-dimensional
Word2Vec / GloVe – Pre-trained word embeddings
BERT Embeddings – Context-aware, word meaning changes by context
Example: “Apple” in “fruit” vs “Apple” in “tech” → different embeddings in BERT

3️⃣ Transformers – Modern NLP Backbone
Transformers are deep learning models that read all words at once and use attention to find relationships between them.
Core Idea: Instead of reading left-to-right (like RNNs), Transformers look at the entire sequence and decide which words matter most.
Key Terms:
Self-Attention – Focus on relevant words in context
Encoder & Decoder – For understanding and generating text
Pretrained Models – BERT, RoBERTa, etc.
Use Cases:
• Text classification
• Question answering
• Translation
• Summarization
• Chatbots

🛠️ Tools to Try Out:
• Hugging Face Transformers
• TensorFlow / PyTorch
• Google Colab
• spaCy, NLTK

🎯 Practice Task:
• Take a sentence
• Tokenize it
• Convert tokens to embeddings
• Pass through a transformer model (like BERT)
• See how it understands or predicts output

💬 Tap ❤️ for more!
3🥰1
Data Science: Tools You Should Know as a Beginner 🧰📊

Mastering these tools helps you build real-world data projects faster and smarter:

1️⃣ Python
Most popular language in data science
Libraries: NumPy, Pandas, Scikit-learn, Matplotlib, Seaborn
📌 Use: Data cleaning, EDA, modeling, automation

2️⃣ Jupyter Notebook
Interactive coding environment
Great for documentation + visualization
📌 Use: Prototyping & explaining models

3️⃣ SQL
Essential for querying databases
📌 Use: Data extraction, filtering, joins, aggregations

4️⃣ Excel / Google Sheets
Quick analysis & reports
📌 Use: Data exploration, pivot tables, charts

5️⃣ Power BI / Tableau
Drag-and-drop dashboards
📌 Use: Visual storytelling & business insights

6️⃣ Git & GitHub
Track code changes + collaborate
📌 Use: Version control, building your portfolio

7️⃣ Scikit-learn
Ready-to-use ML models
📌 Use: Classification, regression, model evaluation

8️⃣ Google Colab / Kaggle Notebooks
Free, cloud-based Python environment
📌 Use: Practice & run notebooks without setup

🧠 Bonus:
• VS Code – for scalable Python projects
• APIs – for real-world data access
• Streamlit – build data apps without frontend knowledge

Double Tap ♥️ For More
12
𝐏𝐚𝐲 𝐀𝐟𝐭𝐞𝐫 𝐏𝐥𝐚𝐜𝐞𝐦𝐞𝐧𝐭 - 𝐆𝐞𝐭 𝐏𝐥𝐚𝐜𝐞𝐝 𝐈𝐧 𝐓𝐨𝐩 𝐌𝐍𝐂'𝐬 😍

Learn Coding From Scratch - Lectures Taught By IIT Alumni

60+ Hiring Drives Every Month

𝐇𝐢𝐠𝐡𝐥𝐢𝐠𝐡𝐭𝐬:- 

🌟 Trusted by 7500+ Students
🤝 500+ Hiring Partners
💼 Avg. Rs. 7.4 LPA
🚀 41 LPA Highest Package

Eligibility: BTech / BCA / BSc / MCA / MSc

𝐑𝐞𝐠𝐢𝐬𝐭𝐞𝐫 𝐍𝐨𝐰👇 :- 

https://pdlink.in/4hO7rWY

Hurry, limited seats available!
3🔥1
SQL vs Python Programming: Quick Comparison

📌 SQL Programming

• Query data from databases
• Filter, join, aggregate rows

Best fields
• Data Analytics
• Business Intelligence
• Reporting and MIS
• Entry-level Data Engineering

Job noscripts
• Data Analyst
• Business Analyst
• BI Analyst
• SQL Developer

Hiring reality
• Asked in most analyst interviews
• Used daily in analyst roles

India salary range
• Fresher: 4–8 LPA
• Mid-level: 8–15 LPA

Real tasks
• Monthly sales report
• Top customers by revenue
• Duplicate removal

📌 Python Programming

• Clean and analyze data
• Automate workflows
• Build models

Where you work
• Notebooks
• Scripts
• ML pipelines

Best fields
• Data Science
• Machine Learning
• Automation
• Advanced Analytics

Job noscripts
• Data Scientist
• ML Engineer
• Analytics Engineer
• Python Developer

Hiring reality
• Common in mid to senior roles
• Strong demand in AI teams

India salary range
• Fresher: 6–10 LPA
• Mid-level: 12–25 LPA

Real tasks
• Churn prediction
• Report automation
• File handling CSV, Excel, JSON

⚔️ Quick comparison

Data source
SQL stays inside databases
Python pulls data from anywhere

Speed
SQL runs fast on large tables
Python slows with raw big data

Learning
SQL is beginner-friendly
Python needs coding basics

🎯 Role-based choice

Data Analyst
SQL required
Python adds value

Data Scientist
Python required
SQL used to fetch data

Business Analyst
SQL works for most roles
Python helps automate work

Data Engineer
SQL for pipelines
Python for processing

Best career move
• Learn SQL first for entry
• Add Python for growth
• Use both in real projects

Which one do you prefer?

SQL 👍
Python ❤️
Both 🙏
None 😮
13🙏4👏3
Machine Learning Roadmap 2026
16🔥4🥰1
👩‍💻 FREE 2026 IT Learning Kits Giveaway

🔥 No matter if you're studying for #Cisco, #AWS, #PMP, #Python, #Excel, #Google, #Microsoft, #AI, or any other high-value certification — SPOTO is here to support your journey!

🎁 Claim your free learning resources now
· IT Certs E-book : https://bit.ly/49qh6Bi
· IT exams skill Test : https://bit.ly/49IvAv9
· Python, Excel, Cyber Security, SQL Courses : https://bit.ly/49CS54m
· Free AI Materials & Support Tools: https://bit.ly/4b1Dlia
· Free Cloud Study Guide: https://bit.ly/4pDXuOI

🔗 Looking for Exam Support? Get in touch:
wa.link/zzcvds
📲 Join our IT Study Group for exclusive tips & community support:
https://chat.whatsapp.com/BEQ9WrfLnpg1SgzGQw69oM
1
𝗕𝗲𝗰𝗼𝗺𝗲 𝗮 𝗖𝗲𝗿𝘁𝗶𝗳𝗶𝗲𝗱 𝗗𝗮𝘁𝗮 𝗔𝗻𝗮𝗹𝘆𝘀𝘁 𝗜𝗻 𝗧𝗼𝗽 𝗠𝗡𝗖𝘀😍

Learn Data Analytics, Data Science & AI From Top Data Experts 

𝗛𝗶𝗴𝗵𝗹𝗶𝗴𝗵𝘁𝗲𝘀:- 

- 12.65 Lakhs Highest Salary
- 500+ Partner Companies
- 100% Job Assistance
- 5.7 LPA Average Salary

𝗕𝗼𝗼𝗸 𝗮 𝗙𝗥𝗘𝗘 𝗗𝗲𝗺𝗼👇:-

𝗢𝗻𝗹𝗶𝗻𝗲:- https://pdlink.in/4fdWxJB

🔹 Hyderabad :- https://pdlink.in/4kFhjn3

🔹 Pune:-  https://pdlink.in/45p4GrC

🔹 Noida :-  https://linkpd.in/DaNoida

( Hurry Up 🏃‍♂️Limited Slots )
1
🎯 Tech Career Tracks What You’ll Work With 🚀👨‍💻

💡 1. Data Scientist
▶️ Languages: Python, R
▶️ Skills: Statistics, Machine Learning, Data Wrangling
▶️ Tools: Pandas, NumPy, Scikit-learn, Jupyter
▶️ Projects: Predictive models, sentiment analysis, dashboards

📊 2. Data Analyst
▶️ Tools: Excel, SQL, Tableau, Power BI
▶️ Skills: Data cleaning, Visualization, Reporting
▶️ Languages: Python (optional)
▶️ Projects: Sales reports, business insights, KPIs

🤖 3. Machine Learning Engineer
▶️ Core: ML Algorithms, Model Deployment
▶️ Tools: TensorFlow, PyTorch, MLflow
▶️ Skills: Feature engineering, model tuning
▶️ Projects: Image classifiers, recommendation systems

🌐 4. Cloud Engineer
▶️ Platforms: AWS, Azure, GCP
▶️ Tools: Terraform, Ansible, Docker, Kubernetes
▶️ Skills: Cloud architecture, networking, automation
▶️ Projects: Scalable apps, serverless functions

🔐 5. Cybersecurity Analyst
▶️ Concepts: Network Security, Vulnerability Assessment
▶️ Tools: Wireshark, Burp Suite, Nmap
▶️ Skills: Threat detection, penetration testing
▶️ Projects: Security audits, firewall setup

🕹️ 6. Game Developer
▶️ Languages: C++, C#, JavaScript
▶️ Engines: Unity, Unreal Engine
▶️ Skills: Physics, animation, design patterns
▶️ Projects: 2D/3D games, multiplayer games

💼 7. Tech Product Manager
▶️ Skills: Agile, Roadmaps, Prioritization
▶️ Tools: Jira, Trello, Notion, Figma
▶️ Background: Business + basic tech knowledge
▶️ Projects: MVPs, user stories, stakeholder reports

💬 Pick a track → Learn tools → Build + share projects → Grow your brand

❤️ Tap for more!
15🥰1
𝗧𝗵𝗲 𝟯 𝗦𝗸𝗶𝗹𝗹𝘀 𝗧𝗵𝗮𝘁 𝗪𝗶𝗹𝗹 𝗠𝗮𝗸𝗲 𝗬𝗼𝘂 𝗨𝗻𝘀𝘁𝗼𝗽𝗽𝗮𝗯𝗹𝗲 𝗶𝗻 𝟮𝟬𝟮𝟲😍

Start learning for FREE and earn a certification that adds real value to your resume.

𝗖𝗹𝗼𝘂𝗱 𝗖𝗼𝗺𝗽𝘂𝘁𝗶𝗻𝗴:- https://pdlink.in/3LoutZd

𝗖𝘆𝗯𝗲𝗿 𝗦𝗲𝗰𝘂𝗿𝗶𝘁𝘆:- https://pdlink.in/3N9VOyW

𝗕𝗶𝗴 𝗗𝗮𝘁𝗮 𝗔𝗻𝗮𝗹𝘆𝘁𝗶𝗰𝘀:- https://pdlink.in/497MMLw

👉 Enroll today & future-proof your career!
1
Data Science Projects and Deployment

What a real data science project looks like
• You start with a business problem
Example. Predict customer churn for a telecom company to reduce revenue loss.
• You define success metrics
Churn prediction accuracy above 80 percent. Recall more important than precision.
• You collect data
Sources include SQL databases, CSV files, APIs, logs. Typical size ranges from 50,000 rows to millions.
• You clean data
Remove duplicates. Handle missing values. Fix incorrect data types. 
Example. Convert dates, remove negative salaries.
• You explore data
Check distributions. Find correlations. Spot outliers. 
Example. Customers with low tenure churn more.
• You engineer features
Create new columns from raw data. 
Example. Average monthly spend, tenure buckets.
• You build models
Start simple. Logistic Regression, Decision Tree. Move to Random Forest, XGBoost if needed.
• You evaluate models
Use train test split or cross validation. Metrics depend on the problem. 
Classification. Accuracy, Precision, Recall, ROC AUC. 
Regression. RMSE, MAE.
• You select the final model
Balance performance and interpretability. 
Example. Slightly lower accuracy but easier to explain to stakeholders.

Common Real World Data Science Projects
• Sales forecasting
Predict next 3 to 6 months revenue using historical sales data.
• Customer churn prediction
Used by telecom, SaaS, OTT platforms.
• Recommendation systems
Products, movies, courses. Tech. Collaborative filtering, content based filtering.
• Fraud detection
Credit card transactions. Focus on recall. Missing fraud costs money.
• Sentiment analysis
Analyze reviews, tweets, feedback. Used in marketing and brand monitoring.
• Demand prediction
Used in e commerce and supply chain.

What Deployment Actually Means 
Deployment means your model runs automatically and gives predictions without you opening Jupyter Notebook. If your model is not deployed, it is not used.

Basic Deployment Options
• Batch prediction
Run the model daily or weekly. 
Example. Predict churn for all customers every night.
• Real time prediction
Prediction happens instantly via an API. 
Example. Fraud detection during a transaction.

Simple Deployment Workflow
• Save the trained model
Use pickle or joblib.
• Build an API
Use Flask or FastAPI.
• Load the model inside the API
The API takes input and returns predictions.
• Test locally
Send sample requests. Check responses.
• Deploy to cloud
AWS, GCP, Azure, Render, Railway.

Example Stack for Beginners
• Python
• Pandas, NumPy, Scikit learn
• Flask or FastAPI
• Docker
• AWS EC2 or Render

What MLOps Adds in Real Companies
• Model versioning
Track which model is in production.
• Data drift detection
Alert when incoming data changes.
• Model retraining
Automatically retrain with new data.
• Monitoring
Track accuracy, latency, failures.
• CI CD pipelines
Safe and repeatable deployments.

Tools Used in MLOps
• MLflow for experiments
• Docker for packaging
• Airflow for scheduling
• GitHub Actions for CI CD
• Prometheus and Grafana for monitoring

How You Should Present Projects in Your Resume
• Mention the business problem
• Mention dataset size
• Mention algorithms used
• Mention metrics achieved
• Mention deployment clearly
Example resume bullet: 
Built a customer churn prediction model on 200k records using Random Forest, achieved 84 percent recall, deployed as a REST API using FastAPI and Docker on AWS.

Common Mistakes to Avoid
• Only showing notebooks
• No clear business problem
• No metrics
• No deployment
• Using deep learning for small data without reason

Double Tap ♥️ For More
8👍1😁1