Advertising on the Telegram channel «Data Science Portfolio - Datasets & Projects»

How to send follow up email to a recruiter 👇👇

Dear [Recruiter’s Name],

I hope this email finds you doing well. I wanted to take a moment to express my sincere gratitude for the time and consideration you have given me throughout the recruitment process for the [position] role at [company].

I understand that you must be extremely busy and receive countless applications, so I wanted to reach out and follow up on the status of my application. If it’s not too much trouble, could you kindly provide me with any updates or feedback you may have?

I want to assure you that I remain genuinely interested in the opportunity to join the team at [company] and I would be honored to discuss my qualifications further. If there are any additional materials or information you require from me, please don’t hesitate to let me know.

Thank you for your time and consideration. I appreciate the effort you put into recruiting and look forward to hearing from you soon.

Warmest regards,

(Tap to copy)

Kandinsky 5.0 Video Lite and Kandinsky 5.0 Video Pro generative models on the global text-to-video landscape

🔘Pro is currently the #1 open-source model worldwide
🔘Lite (2B parameters) outperforms Sora v1.
🔘Only Google (Veo 3.1, Veo 3), OpenAI (Sora 2), Alibaba (Wan 2.5), and KlingAI (Kling 2.5, 2.6) outperform Pro — these are objectively the strongest video generation models in production today. We are on par with Luma AI (Ray 3) and MiniMax (Hailuo 2.3): the maximum ELO gap is 3 points, with a 95% CI of ±21.

Useful links
🔘Full leaderboard: LM Arena
🔘Kandinsky 5.0 details: technical report
🔘Open-source Kandinsky 5.0: GitHub and Hugging Face

👋 Greetings from PVR Cloud Tech!

📚 Course: Azure Data Engineering

⏰ Time: 7:00 AM to 8:00 AM IST
🗓️ Duration: 3 months

Please find the key resources and next-session details below:

▶️ Day-1 Recording (Introduction to Azure Data Engineering)
https://drive.google.com/file/d/1m8v_e9ASBq2hSgHPWq6UHYHLZ1FwLeQk/view?usp=sharing

📘 Course Curriculum
https://drive.google.com/file/d/1YufWV0Ru6SyYt-oNf5Mi5H8mmeV_kfP-/view

📍 Next Session (Tomorrow (Sunday) | 7:00 AM – 8:00 AM IST)
Meeting Link: https://meet.goto.com/934921645

📝 Mandatory Registration
https://forms.gle/Wy57ZnARuUSa1yeB9

👉 Join the Official WhatsApp Community
https://chat.whatsapp.com/JezGFEebk2G3TsZPzTsbZP

🔗 Learning more about Data Engineering? Follow me on LinkedIn!
https://www.linkedin.com/in/srinivas-reddy-35a47a65/

Kind regards,
PVR Cloud Tech
📞 +91-9346060794

🚗 If ML Algorithms Were Cars…

🚙 Linear Regression — Maruti 800
Simple, reliable, gets you from A to B.
Struggles on curves, but hey… classic.

🚕 Logistic Regression — Auto-rickshaw
Only two states: yes/no, 0/1, go/stop.
Efficient, but not built for complex roads.

🚐 Decision Tree — Old School Jeep
Takes sharp turns at every split.
Fun, but flips easily. 😅

🚜 Random Forest — Tractor Convoy
A lot of vehicles working together.
Slow individually, powerful as a group.

🏎 SVM — Ferrari
Elegant, fast, and only useful when the road (data) is perfectly separated.
Otherwise… good luck.

🚘 KNN — School Bus
Just follows the nearest kids and stops where they stop.
Zero intelligence, full blind faith.

🚛 Naive Bayes — Delivery Van
Simple, fast, predictable.
Surprisingly efficient despite assumptions that make no sense.

🚗💨 Neural Network — Tesla
Lots of hidden features, runs on massive power.
Even mechanics (developers) can't fully explain how it works.

🚀 Deep Learning — SpaceX Rocket
Needs crazy fuel, insane computing power, and one wrong parameter = explosion.
But when it works… mind-blowing.

🏎💥 Gradient Boosting — Formula 1 Car
Tiny improvements stacked until it becomes a monster.
Warning: overheats (overfits) if not tuned properly.

🤖 Reinforcement Learning — Self-Driving Car
Learns by trial and error.
Sometimes brilliant… sometimes crashes into a wall.

Feature Engineering: The Hidden Skill That Makes or Breaks ML Models

Most people chase better algorithms. Professionals chase better features.

Because no matter how fancy your model is, if the data doesn’t speak the right language. it won’t learn anything meaningful.

🔍 So What Exactly Is Feature Engineering?

It’s not just cleaning data. It’s translating raw, messy reality into something your model can understand.

You’re basically asking:

“How can I represent the real world in numbers, without losing its meaning?”

Example:

➖ “Date of birth” → Age (time-based insight)
➖ “Text review” → Sentiment score (emotional signal)
➖ “Price” → log(price) (stabilized distribution)

Every transformation teaches your model how to see the world more clearly.

⚙️ Why It Matters More Than the Model

You can’t outsmart bad features.
A simple linear model trained on smartly engineered data will outperform a deep neural net trained on noise.

Kaggle winners know this. They spend 80% of their time creating and refining features not tuning hyperparameters.

Why? Because models don’t create intelligence, They extract it from what you feed them.

🧩 The Core Idea: Add Signal, Remove Noise

Feature engineering is about sculpting your data so patterns stand out.

You do that by:

✔️ Transforming data (scale, encode, log).
✔️ Creating new signals (ratios, lags, interactions).
✔️ Reducing redundancy (drop correlated or useless columns).

Every step should make learning easier not prettier.

⚠️ Beware of Data Leakage

Here’s the silent trap: using future information when building features.

For example, when predicting loan default, if you include “payment status after 90 days,” your model will look brilliant in training and fail in production.

Golden rule:
👉 A feature is valid only if it’s available at prediction time.

🧠 Think Like a Domain Expert

Anyone can code transformations.
But great data scientists understand context.

They ask:

❔What actually influences this outcome in real life?
❔How can I capture that influence as a feature?

When you merge domain intuition with technical precision, feature engineering becomes your superpower.

⚡️ Final Takeaway

The model is the student.
The features are the teacher.

And no matter how capable the student if the teacher explains things poorly, learning fails.

Feature engineering isn’t preprocessing. It’s the art of teaching your model how to understand the world.

Preparing for a SQL interview?

Focus on mastering these essential topics:

1. Joins: Get comfortable with inner, left, right, and outer joins.
Knowing when to use what kind of join is important!

2. Window Functions: Understand when to use
ROW_NUMBER, RANK(), DENSE_RANK(), LAG, and LEAD for complex analytical queries.

3. Query Execution Order: Know the sequence from FROM to
ORDER BY. This is crucial for writing efficient, error-free queries.

4. Common Table Expressions (CTEs): Use CTEs to simplify and structure complex queries for better readability.

5. Aggregations & Window Functions: Combine aggregate functions with window functions for in-depth data analysis.

6. Subqueries: Learn how to use subqueries effectively within main SQL statements for complex data manipulations.

7. Handling NULLs: Be adept at managing NULL values to ensure accurate data processing and avoid potential pitfalls.

8. Indexing: Understand how proper indexing can significantly boost query performance.

9. GROUP BY & HAVING: Master grouping data and filtering groups with HAVING to refine your query results.

10. String Manipulation Functions: Get familiar with string functions like CONCAT, SUBSTRING, and REPLACE to handle text data efficiently.

11. Set Operations: Know how to use UNION, INTERSECT, and EXCEPT to combine or compare result sets.

12. Optimizing Queries: Learn techniques to optimize your queries for performance, especially with large datasets.

If we master/ Practice in these topics we can track any SQL interviews..

Like this post if you need more 👍❤️

Hope it helps :)

Tired of AI that refuses to help?

@UnboundGPT_bot doesn't lecture. It just works.

✓ Multiple models (GPT-4o, Gemini, DeepSeek) 
✓ Image generation & editing 
✓ Video creation 
✓ Persistent memory 
✓ Actually uncensored

Free to try → @UnboundGPT_bot or https://ko2bot.com

6 Must-Know Data Engineering Tools For Beginners

📊 Data Science Libraries & Use Cases ✨

🔹 Pandas 🐼 ➜ Data manipulation and analysis (think spreadsheets for Python!)
🔹 NumPy ✨ ➜ Numerical computing (arrays, mathematical operations)
🔹 Scikit-learn ⚙️ ➜ Machine learning algorithms (classification, regression, clustering)
🔹 Matplotlib 📈 ➜ Creating basic and custom data visualizations
🔹 Seaborn 🎨 ➜ Statistical data visualization (prettier plots, easier stats focus)
🔹 TensorFlow 🧠 ➜ Building and training deep learning models (Google's framework)
🔹 SciPy 🔬 ➜ Scientific computing and optimization (advanced math functions)
🔹 Statsmodels 📊 ➜ Statistical modeling (linear models, time series analysis)
🔹 BeautifulSoup 🕸️ ➜ Web scraping data (extracting info from websites)
🔹 SQLAlchemy 🗃️ ➜ Database interactions (working with SQL databases in Python)

💬 Tap ❤️ if this helped you!

Sometimes reality outpaces expectations in the most unexpected ways.
While global AI development seems increasingly fragmented, Sber just released Europe's largest open-source AI collection—full weights, code, and commercial rights included.
✅ No API paywalls.
✅ No usage restrictions.
✅ Just four complete model families ready to run in your private infrastructure, fine-tuned on your data, serving your specific needs.

What makes this release remarkable isn't merely the technical prowess, but the quiet confidence behind sharing it openly when others are building walls. Find out more in the article from the developers.

GigaChat Ultra Preview: 702B-parameter MoE model (36B active per token) with 128K context window. Trained from scratch, it outperforms DeepSeek V3.1 on specialized benchmarks while maintaining faster inference than previous flagships. Enterprise-ready with offline fine-tuning for secure environments.
GitHub | HuggingFace | GitVerse

GigaChat Lightning offers the opposite balance: compact yet powerful MoE architecture running on your laptop. It competes with Qwen3-4B in quality, matches the speed of Qwen3-1.7B, yet is significantly smarter and larger in parameter count.
Lightning holds its own against the best open-source models in its class, outperforms comparable models on different tasks, and delivers ultra-fast inference—making it ideal for scenarios where Ultra would be overkill and speed is critical. Plus, it features stable expert routing and a welcome bonus: 256K context support.
GitHub | Hugging Face | GitVerse

Kandinsky 5.0 brings a significant step forward in open generative models. The flagship Video Pro matches Veo 3 in visual quality and outperforms Wan 2.2-A14B, while Video Lite and Image Lite offer fast, lightweight alternatives for real-time use cases. The suite is powered by K-VAE 1.0, a high-efficiency open-source visual encoder that enables strong compression and serves as a solid base for training generative models. This stack balances performance, scalability, and practicality—whether you're building video pipelines or experimenting with multimodal generation.
GitHub | GitVerse | Hugging Face | Technical report

Audio gets its upgrade too: GigaAM-v3 delivers speech recognition model with 50% lower WER than Whisper-large-v3, trained on 700k hours of audio with punctuation/normalization for spontaneous speech.
GitHub | HuggingFace | GitVerse

Every model can be deployed on-premises, fine-tuned on your data, and used commercially. It's not just about catching up – it's about building sovereign AI infrastructure that belongs to everyone who needs it.