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Data Science Projects Part-2
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โœ… Want to master Automation Testing? ๐Ÿงช๐Ÿ’ป

Whether you're a beginner or looking to upgrade your skills โ€” this course is your fast-track to success!

๐ŸŽฏ GeeksforGeeks Automation Testing Course 
โ€“ Covers Selenium, Java, TestNG, Maven, Jenkins & more 
โ€“ Perfect for beginners & working professionals 
โ€“ Learn at your own pace

๐ŸŽ Limited-Time Offer: Get 25% OFF

Use Code: GFGWINTERARC at checkout

๐Ÿ”— Enroll Now: https://gfgcdn.com/tu/W85/

๐Ÿ“Œ Donโ€™t wait โ€” Invest in your career today!
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๐Ÿ”ฐ Important Built-in Functions in Python
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Essential Skills to Master for Using Generative AI

1๏ธโƒฃ Prompt Engineering
โœ๏ธ Learn how to craft clear, detailed prompts to get accurate AI-generated results.

2๏ธโƒฃ Data Literacy
๐Ÿ“Š Understand data sources, biases, and how AI models process information.

3๏ธโƒฃ AI Ethics & Responsible Usage
โš–๏ธ Know the ethical implications of AI, including bias, misinformation, and copyright issues.

4๏ธโƒฃ Creativity & Critical Thinking
๐Ÿ’ก AI enhances creativity, but human intuition is key for quality content.

5๏ธโƒฃ AI Tool Familiarity
๐Ÿ” Get hands-on experience with tools like ChatGPT, DALLยทE, Midjourney, and Runway ML.

6๏ธโƒฃ Coding Basics (Optional)
๐Ÿ’ป Knowing Python, SQL, or APIs helps customize AI workflows and automation.

7๏ธโƒฃ Business & Marketing Awareness
๐Ÿ“ข Leverage AI for automation, branding, and customer engagement.

8๏ธโƒฃ Cybersecurity & Privacy Knowledge
๐Ÿ” Learn how AI-generated data can be misused and ways to protect sensitive information.

9๏ธโƒฃ Adaptability & Continuous Learning
๐Ÿš€ AI evolves fastโ€”stay updated with new trends, tools, and regulations.

Master these skills to make the most of AI in your personal and professional life! ๐Ÿ”ฅ

Free Generative AI Resources: https://whatsapp.com/channel/0029VazaRBY2UPBNj1aCrN0U
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Learn by Building: 60 GenAI Projects + AI Engineering Hub

1๏ธโƒฃ 60 ready projects on generative AI
List of 60 projects on GitHub with open code on generative AI from text models to audio and video.

Each project includes a description and a link to the repository. You can choose an idea, run it locally, and build your own AI portfolio.

Github and Even more useful stuff.


2๏ธโƒฃ AI Engineering Hub : comprehensive resource for learning & developing AI-based solutions.
- 93+ production-ready projects for any level
- detailed tutorials on LLM, RAG, agents, and much more
- real examples of AI agent applications
- ready-made examples for implementation, adaptation, and scaling in your projects

Grab it on GitHub
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๐Ÿ“Š Data Science Roadmap at a Glance

Master the key pillars of Data Science step by step:

โ€ข Math & Stats: Build foundations in Linear Algebra, Probability, and Hypothesis Testing.

โ€ข Programming: Learn Python/R and SQL for data handling and analysis.

โ€ข Visualization: Use Tableau, Power BI, or Excel to tell stories with data.

โ€ข Feature Engineering: Focus on feature selection, encoding, and generation.

โ€ข Machine Learning: Start with basics, then explore advanced models like XGBoost.

โ€ข Deep Learning: Dive into Neural Networks, CNNs, and RNNs with TensorFlow or PyTorch.

โ€ข NLP: Work with text data using classification and word embeddings.

โ€ข Deployment: Deploy models using Flask, Django, or cloud platforms.

๐ŸŽฏ Tip: Learn consistently โ€” Data Science is a journey, not a sprint.
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The program for the 10th AI Journey 2025 international conference has been unveiled: scientists, visionaries, and global AI practitioners will come together on one stage. Here, you will hear the voices of those who don't just believe in the futureโ€”they are creating it!

Speakers include visionaries Kai-Fu Lee and Chen Qufan, as well as dozens of global AI gurus from around the world!

On the first day of the conference, November 19, we will talk about how AI is already being used in various areas of life, helping to unlock human potential for the future and changing creative industries, and what impact it has on humans and on a sustainable future.

On November 20, we will focus on the role of AI in business and economic development and present technologies that will help businesses and developers be more effective by unlocking human potential.

On November 21, we will talk about how engineers and scientists are making scientific and technological breakthroughs and creating the future today!

Ride the wave with AI into the future!

Tune in to the AI Journey webcast on November 19-21.
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DATA ANALYST Interview Questions (0-3 yr) (SQL, Power BI)

๐Ÿ‘‰ Power BI:

Q1: Explain step-by-step how you will create a sales dashboard from scratch.

Q2: Explain how you can optimize a slow Power BI report.

Q3: Explain Any 5 Chart Types and Their Uses in Representing Different Aspects of Data.

๐Ÿ‘‰SQL:

Q1: Explain the difference between RANK(), DENSE_RANK(), and ROW_NUMBER() functions using example.

Q2 โ€“ Q4 use Table: employee (EmpID, ManagerID, JoinDate, Dept, Salary)

Q2: Find the nth highest salary from the Employee table.

Q3: You have an employee table with employee ID and manager ID. Find all employees under a specific manager, including their subordinates at any level.

Q4: Write a query to find the cumulative salary of employees department-wise, who have joined the company in the last 30 days.

Q5: Find the top 2 customers with the highest order amount for each product category, handling ties appropriately. Table: Customer (CustomerID, ProductCategory, OrderAmount)

๐Ÿ‘‰Behavioral:

Q1: Why do you want to become a data analyst and why did you apply to this company?

Q2: Describe a time when you had to manage a difficult task with tight deadlines. How did you handle it?

I have curated best top-notch Data Analytics Resources ๐Ÿ‘‡๐Ÿ‘‡
https://whatsapp.com/channel/0029VaGgzAk72WTmQFERKh02

Hope this helps you ๐Ÿ˜Š
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Top 6 Data Concepts
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Tune in to the 10th AI Journey 2025 international conference: scientists, visionaries, and global AI practitioners will come together on one stage. Here, you will hear the voices of those who don't just believe in the futureโ€”they are creating it!

Speakers include visionaries Kai-Fu Lee and Chen Qufan, as well as dozens of global AI gurus! Do you agree with their predictions about AI?

On November 20, we will focus on the role of AI in business and economic development and present technologies that will help businesses and developers be more effective by unlocking human potential.

On November 21, we will talk about how engineers and scientists are making scientific and technological breakthroughs and creating the future today! The day's program includes presentations by scientists from around the world:
- Ajit Abraham (Sai University, India) will present on โ€œGenerative AI in Healthcareโ€
- Nebojลกa Baฤanin Dลพakula (Singidunum University, Serbia) will talk about the latest advances in bio-inspired metaheuristics
- AIexandre Ferreira Ramos (University of Sรฃo Paulo, Brazil) will present his work on using thermodynamic models to study the regulatory logic of transcriptional control at the DNA level
- Anderson Rocha (University of Campinas, Brazil) will give a presentation entitled โ€œAI in the New Era: From Basics to Trends, Opportunities, and Global Cooperationโ€.

And in the special AIJ Junior track, we will talk about how AI helps us learn, create and ride the wave with AI.

The day will conclude with an award ceremony for the winners of the AI Challenge for aspiring data scientists and the AIJ Contest for experienced AI specialists. The results of an open selection of AIJ Science research papers will be announced.

Ride the wave with AI into the future!

Tune in to the AI Journey webcast on November 19-21.
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Data Science Techniques
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Data Analytics Interview Questions

1. What is the difference between SQL and MySQL?

SQL is a standard language for retrieving and manipulating structured databases. On the contrary, MySQL is a relational database management system, like SQL Server, Oracle or IBM DB2, that is used to manage SQL databases.


2. What is a Cross-Join?

Cross join can be defined as a cartesian product of the two tables included in the join. The table after join contains the same number of rows as in the cross-product of the number of rows in the two tables. If a WHERE clause is used in cross join then the query will work like an INNER JOIN.


3. What is a Stored Procedure?

A stored procedure is a subroutine available to applications that access a relational database management system (RDBMS). Such procedures are stored in the database data dictionary. The sole disadvantage of stored procedure is that it can be executed nowhere except in the database and occupies more memory in the database server.


4. What is Pattern Matching in SQL?

SQL pattern matching provides for pattern search in data if you have no clue as to what that word should be. This kind of SQL query uses wildcards to match a string pattern, rather than writing the exact word. The LIKE operator is used in conjunction with SQL Wildcards to fetch the required information.
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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 collectionโ€”full weights, code, and commercial rights included.
โœ… No API paywalls.
โœ… No usage restrictions.
โœ… 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 inferenceโ€”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 practicalityโ€”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 โ€“ it's about building sovereign AI infrastructure that belongs to everyone who needs it.
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โœ… Useful Resources to Learn Machine Learning in 2025 ๐Ÿค–๐Ÿ“˜

1. YouTube Channels
โฆ StatQuest โ€“ Simple, visual ML explanations
โฆ Krish Naik โ€“ ML projects and interviews
โฆ Simplilearn โ€“ Concepts + hands-on demos
โฆ freeCodeCamp โ€“ Full ML crash courses

2. Free Courses
โฆ Andrew Ngโ€™s ML โ€“ Coursera (audit for free)
โฆ Googleโ€™s ML Crash Course โ€“ Interactive + videos
โฆ Kaggle Learn โ€“ Short, hands-on ML tutorials
โฆ Fast.ai โ€“ Practical deep learning for coders

3. Practice Platforms
โฆ Kaggle โ€“ Real datasets, notebooks, and competitions
โฆ Google Colab โ€“ Run Python ML code in browser
โฆ DrivenData โ€“ ML competitions with impact

4. Projects to Try
โฆ House price predictor
โฆ Stock trend classifier
โฆ Sentiment analysis on tweets
โฆ MNIST handwritten digit recognition
โฆ Recommendation system

5. Key Libraries
โฆ scikit-learn โ€“ Core ML algorithms
โฆ pandas โ€“ Data manipulation
โฆ matplotlib/seaborn โ€“ Visualization
โฆ TensorFlow / PyTorch โ€“ Deep learning
โฆ XGBoost โ€“ Advanced boosting models

6. Must-Know Concepts
โฆ Supervised vs Unsupervised learning
โฆ Overfitting & underfitting
โฆ Model evaluation: Accuracy, F1, ROC
โฆ Cross-validation
โฆ Feature engineering

7. Books
โฆ โ€œHands-On ML with Scikit-Learn & TensorFlowโ€ โ€“ Aurรฉlien Gรฉron
โฆ โ€œPython MLโ€ โ€“ Sebastian Raschka

๐Ÿ’ก Build a portfolio. Learn by doing. Share projects on GitHub.

๐Ÿ’ฌ Tap โค๏ธ for more!
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๐Ÿš€ ๐„๐ฉ๐จ๐œ๐ก ๐ฏ๐ฌ ๐ˆ๐ญ๐ž๐ซ๐š๐ญ๐ข๐จ๐ง ๐ข๐ง ๐ƒ๐ž๐ž๐ฉ ๐‹๐ž๐š๐ซ๐ง๐ข๐ง๐  โ€“ ๐“๐ก๐ž ๐Œ๐จ๐ฌ๐ญ ๐‚๐จ๐ฆ๐ฆ๐จ๐ง๐ฅ๐ฒ ๐‚๐จ๐ง๐Ÿ๐ฎ๐ฌ๐ž๐ ๐“๐ž๐ซ๐ฆ๐ฌ!

When training a neural network, two words confuse most beginners:

๐Ÿ”น ๐„๐ฉ๐จ๐œ๐ก
๐˜ˆ๐˜ฏ ๐˜ฆ๐˜ฑ๐˜ฐ๐˜ค๐˜ฉ ๐˜ฎ๐˜ฆ๐˜ข๐˜ฏ๐˜ด ๐˜ต๐˜ฉ๐˜ฆ ๐˜ฎ๐˜ฐ๐˜ฅ๐˜ฆ๐˜ญ ๐˜ฉ๐˜ข๐˜ด ๐˜ด๐˜ฆ๐˜ฆ๐˜ฏ ๐˜ต๐˜ฉ๐˜ฆ ๐˜ฆ๐˜ฏ๐˜ต๐˜ช๐˜ณ๐˜ฆ ๐˜ฅ๐˜ข๐˜ต๐˜ข๐˜ด๐˜ฆ๐˜ต ๐˜ฐ๐˜ฏ๐˜ค๐˜ฆ.
๐˜๐˜ง ๐˜บ๐˜ฐ๐˜ถ ๐˜ต๐˜ณ๐˜ข๐˜ช๐˜ฏ ๐˜ง๐˜ฐ๐˜ณ 10 ๐˜ฆ๐˜ฑ๐˜ฐ๐˜ค๐˜ฉ๐˜ด, ๐˜บ๐˜ฐ๐˜ถ๐˜ณ ๐˜ฎ๐˜ฐ๐˜ฅ๐˜ฆ๐˜ญ ๐˜จ๐˜ฐ๐˜ฆ๐˜ด ๐˜ต๐˜ฉ๐˜ณ๐˜ฐ๐˜ถ๐˜จ๐˜ฉ ๐˜ต๐˜ฉ๐˜ฆ ๐˜ธ๐˜ฉ๐˜ฐ๐˜ญ๐˜ฆ ๐˜ฅ๐˜ข๐˜ต๐˜ข 10 ๐˜ต๐˜ช๐˜ฎ๐˜ฆ๐˜ด.

๐Ÿ”น ๐ˆ๐ญ๐ž๐ซ๐š๐ญ๐ข๐จ๐ง
๐˜ˆ๐˜ฏ ๐˜ช๐˜ต๐˜ฆ๐˜ณ๐˜ข๐˜ต๐˜ช๐˜ฐ๐˜ฏ ๐˜ช๐˜ด ๐˜ฐ๐˜ฏ๐˜ฆ ๐˜ธ๐˜ฆ๐˜ช๐˜จ๐˜ฉ๐˜ต ๐˜ถ๐˜ฑ๐˜ฅ๐˜ข๐˜ต๐˜ฆ, ๐˜ฃ๐˜ข๐˜ด๐˜ฆ๐˜ฅ ๐˜ฐ๐˜ฏ ๐˜ข ๐˜ด๐˜ช๐˜ฏ๐˜จ๐˜ญ๐˜ฆ ๐˜ฃ๐˜ข๐˜ต๐˜ค๐˜ฉ ๐˜ฐ๐˜ง ๐˜ฅ๐˜ข๐˜ต๐˜ข.

If you have:
10,000 ๐˜ณ๐˜ฆ๐˜ค๐˜ฐ๐˜ณ๐˜ฅ๐˜ด
๐˜‰๐˜ข๐˜ต๐˜ค๐˜ฉ ๐˜ด๐˜ช๐˜ป๐˜ฆ = 100
๐Ÿ‘‰ ๐˜›๐˜ฉ๐˜ฆ๐˜ฏ ๐˜บ๐˜ฐ๐˜ถ ๐˜จ๐˜ฆ๐˜ต 100 ๐˜ช๐˜ต๐˜ฆ๐˜ณ๐˜ข๐˜ต๐˜ช๐˜ฐ๐˜ฏ๐˜ด ๐˜ฑ๐˜ฆ๐˜ณ ๐˜ฆ๐˜ฑ๐˜ฐ๐˜ค๐˜ฉ.

โœ”๏ธ ๐’๐ข๐ฆ๐ฉ๐ฅ๐ž ๐€๐ง๐š๐ฅ๐จ๐ ๐ฒ
๐“๐ก๐ข๐ง๐ค ๐จ๐Ÿ ๐ ๐จ๐ข๐ง๐  ๐ญ๐จ ๐ญ๐ก๐ž ๐ ๐ฒ๐ฆ:
๐„๐ฉ๐จ๐œ๐ก = ๐œ๐จ๐ฆ๐ฉ๐ฅ๐ž๐ญ๐ข๐ง๐  ๐ญ๐ก๐ž ๐ž๐ง๐ญ๐ข๐ซ๐ž ๐ฐ๐จ๐ซ๐ค๐จ๐ฎ๐ญ ๐ฉ๐ฅ๐š๐ง ๐จ๐ง๐œ๐ž
๐ˆ๐ญ๐ž๐ซ๐š๐ญ๐ข๐จ๐ง = ๐๐จ๐ข๐ง๐  ๐จ๐ง๐ž ๐ฌ๐ž๐ญ ๐ข๐ง๐ฌ๐ข๐๐ž ๐ญ๐ก๐š๐ญ ๐ฐ๐จ๐ซ๐ค๐จ๐ฎ๐ญ

The model becomes stronger with every iteration, and improves overall with more epochs.
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