Data Analytics
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Dive into the world of Data Analytics – uncover insights, explore trends, and master data-driven decision making.

Admin: @HusseinSheikho || @Hussein_Sheikho
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Language Models Interview Handbook.pdf
721 KB
Language Models Interview Handbook

151 Interview Questions, Foundation Roadmaps, Python Examples,
Architecture Diagrams and Production Playbooks for Modern LLM


Help us grow


https://t.me/DataAnalyticsX
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If you want to become a Data Analyst or Data Scientist, these are the Python concepts you should master first:

🧹 Data Cleaning
✔️ dropna() → remove missing values
✔️ fillna() → handle nulls properly
✔️ astype() → fix data types
✔️ unique() → explore categories

📊 Exploratory Data Analysis (EDA)
✔️ describe() → quick statistics
✔️ groupby() → analyze patterns
✔️ corr() → find relationships
✔️ hist() & scatter() → visualize distributions

📈 Data Visualization
✔️ bar() → compare categories
✔️ sns.barplot() → statistical plots
✔️ sns.lineplot() → trends over time
✔️ plotly.express.scatter() → interactive charts

https://t.me/DataAnalyticsX 🤩
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LLMs are the new operating system for work. 🚀💻

But most people still don’t know the difference between RAG, Embeddings, and Hallucinations. 🤔🧠

Here’s the vocabulary cheat sheet everyone in AI should know 📚

These foundational LLM concepts every professional, creator, founder, and tech enthusiast should know 👩‍💼👨‍💻🎨🚀

#LLM #DataScience #AI #ML

https://t.me/DataAnalyticsX 📎
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2
Here’s a NumPy cheat sheet that depicts the 40 most commonly used methods from NumPy 📝🐍

#NumPy #DataAnalytics #AI #math 📊🤖

https://t.me/DataAnalyticsX 🔗📲
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Polars Cheat Sheet — The Ultimate Fast DataFrame Guide 🐻‍❄️

Master the most important Polars methods used in real-world data analytics and data science workflows. 📊🚀

This visual cheat sheet covers DataFrame creation, filtering, aggregations, joins, lazy execution, reshaping, sorting, and more — with practical examples and simulated outputs for faster learning. 🧠💻

Perfect for:
• Data Analysts 👩‍💼
• Data Scientists 🧪
• Python Developers 🐍
• Big Data Enthusiasts 🌐

🚀 Built for speed with Rust-powered performance. ⚙️
📌 Save this post for your next data project.

Source: DataAnalyticsX
4
🤔 Where do I learn Claude?

🤖 You could've just asked!

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With certificates.
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🧠 Claude teaches Claude. Who knew?

Here's the stash: 📚

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5️⃣ Claude Code in Action
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🚫 No "enrollment closes at midnight."

Just click and learn. 🚀

♻️ Repost for everyone still searching for Claude courses!

https://t.me/DataAnalyticsX 🔗
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Google Gemma 4's pre-training is completely free

All you need is a browser and access to more than 500 models to choose from.

The process is simple:

1. Open the notebook of Unsloth in Colab
2. Select a model and a dataset
3. Start the trainin

Link: https://colab.research.google.com/github/unslothai/unsloth/blob/main/studio/Unsloth_Studio_Colab.ipynb

It's done 😂

👉 https://t.me/MachineLearning9
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TOP RAG CHUNKING METHODS.pdf
300.1 KB
🚀 𝐑𝐀𝐆 𝐢𝐬 𝐨𝐧𝐥𝐲 𝐚𝐬 𝐠𝐨𝐨𝐝 𝐚𝐬 𝐲𝐨𝐮𝐫 𝐂𝐇𝐔𝐍𝐊𝐈𝐍𝐆 𝐬𝐭𝐫𝐚𝐭𝐞𝐠𝐲⁣

⁣𝐑𝐞𝐭𝐫𝐢𝐞𝐯𝐚𝐥-𝐀𝐮𝐠𝐦𝐞𝐧𝐭𝐞𝐝 𝐆𝐞𝐧𝐞𝐫𝐚𝐭𝐢𝐨𝐧 (𝐑𝐀𝐆) 𝐢𝐬 𝐭𝐫𝐚𝐧𝐬𝐟𝐨𝐫𝐦𝐢𝐧𝐠 𝐡𝐨𝐰 𝐰𝐞 𝐛𝐮𝐢𝐥𝐝 𝐀𝐈 𝐬𝐲𝐬𝐭𝐞𝐦𝐬—𝐛𝐮𝐭 𝐡𝐞𝐫𝐞’𝐬 𝐭𝐡𝐞 𝐬𝐞𝐜𝐫𝐞𝐭 𝐦𝐨𝐬𝐭 𝐩𝐞𝐨𝐩𝐥𝐞 𝐦𝐢𝐬𝐬:⁣

👉 𝐓𝐡𝐞 𝐰𝐚𝐲 𝐲𝐨𝐮 𝐬𝐩𝐥𝐢𝐭 𝐲𝐨𝐮𝐫 𝐝𝐨𝐜𝐮𝐦𝐞𝐧𝐭𝐬 (𝐜𝐡𝐮𝐧𝐤𝐢𝐧𝐠) 𝐝𝐢𝐫𝐞𝐜𝐭𝐥𝐲 𝐝𝐞𝐭𝐞𝐫𝐦𝐢𝐧𝐞𝐬 𝐡𝐨𝐰 𝐚𝐜𝐜𝐮𝐫𝐚𝐭𝐞, 𝐟𝐚𝐬𝐭, 𝐚𝐧𝐝 𝐬𝐜𝐚𝐥𝐚𝐛𝐥𝐞 𝐲𝐨𝐮𝐫 𝐑𝐀𝐆 𝐬𝐲𝐬𝐭𝐞𝐦 𝐰𝐢𝐥𝐥 𝐛𝐞.⁣

💡 𝐁𝐚𝐝 𝐜𝐡𝐮𝐧𝐤𝐢𝐧𝐠 = 𝐢𝐫𝐫𝐞𝐥𝐞𝐯𝐚𝐧𝐭 𝐚𝐧𝐬𝐰𝐞𝐫𝐬, 𝐰𝐚𝐬𝐭𝐞𝐝 𝐭𝐨𝐤𝐞𝐧𝐬, 𝐚𝐧𝐝 𝐡𝐢𝐠𝐡𝐞𝐫 𝐜𝐨𝐬𝐭𝐬.⁣
💡 𝐒𝐦𝐚𝐫𝐭 𝐜𝐡𝐮𝐧𝐤𝐢𝐧𝐠 = 𝐩𝐫𝐞𝐜𝐢𝐬𝐞 𝐫𝐞𝐭𝐫𝐢𝐞𝐯𝐚𝐥, 𝐜𝐨𝐧𝐭𝐞𝐱𝐭-𝐫𝐢𝐜𝐡 𝐫𝐞𝐬𝐩𝐨𝐧𝐬𝐞𝐬, 𝐚𝐧𝐝 𝐞𝐟𝐟𝐢𝐜𝐢𝐞𝐧𝐜𝐲.⁣

𝐀𝐟𝐭𝐞𝐫 𝐝𝐞𝐞𝐩 𝐫𝐞𝐬𝐞𝐚𝐫𝐜𝐡, 𝐈 𝐩𝐮𝐭 𝐭𝐨𝐠𝐞𝐭𝐡𝐞𝐫 𝐚 𝐠𝐮𝐢𝐝𝐞 𝐨𝐧 𝐭𝐡𝐞 𝐓𝐎𝐏 𝟏𝟓 𝐂𝐡𝐮𝐧𝐤𝐢𝐧𝐠 𝐌𝐞𝐭𝐡𝐨𝐝𝐬 𝐞𝐯𝐞𝐫𝐲 𝐀𝐈 𝐞𝐧𝐠𝐢𝐧𝐞𝐞𝐫 𝐬𝐡𝐨𝐮𝐥𝐝 𝐤𝐧𝐨𝐰:⁣

🔹 𝘍𝘪𝘹𝘦𝘥-𝘚𝘪𝘻𝘦 𝘊𝘩𝘶𝘯𝘬𝘪𝘯𝘨 – 𝘴𝘪𝘮𝘱𝘭𝘦, 𝘱𝘳𝘦𝘥𝘪𝘤𝘵𝘢𝘣𝘭𝘦⁣
🔹 𝘙𝘦𝘤𝘶𝘳𝘴𝘪𝘷𝘦 𝘊𝘩𝘢𝘳𝘢𝘤𝘵𝘦𝘳 𝘚𝘱𝘭𝘪𝘵𝘵𝘪𝘯𝘨 – 𝘧𝘢𝘴𝘵 & 𝘴𝘤𝘢𝘭𝘢𝘣𝘭𝘦⁣
🔹 𝘚𝘦𝘮𝘢𝘯𝘵𝘪𝘤 𝘊𝘩𝘶𝘯𝘬𝘪𝘯𝘨 – 𝘮𝘦𝘢𝘯𝘪𝘯𝘨-𝘣𝘢𝘴𝘦𝘥 𝘱𝘳𝘦𝘤𝘪𝘴𝘪𝘰𝘯⁣
🔹 𝘋𝘰𝘤𝘶𝘮𝘦𝘯𝘵-𝘚𝘱𝘦𝘤𝘪𝘧𝘪𝘤 – 𝘭𝘦𝘷𝘦𝘳𝘢𝘨𝘦 𝘴𝘵𝘳𝘶𝘤𝘵𝘶𝘳𝘦 (𝘗𝘋𝘍𝘴, 𝘏𝘛𝘔𝘓, 𝘔𝘢𝘳𝘬𝘥𝘰𝘸𝘯)⁣
🔹 𝘏𝘪𝘦𝘳𝘢𝘳𝘤𝘩𝘪𝘤𝘢𝘭 – 𝘱𝘢𝘳𝘦𝘯𝘵-𝘤𝘩𝘪𝘭𝘥 𝘳𝘦𝘭𝘢𝘵𝘪𝘰𝘯𝘴𝘩𝘪𝘱𝘴⁣
🔹 𝘚𝘦𝘯𝘵𝘦𝘯𝘤𝘦-𝘈𝘸𝘢𝘳𝘦 – 𝘳𝘦𝘢𝘥𝘢𝘣𝘪𝘭𝘪𝘵𝘺 𝘱𝘳𝘦𝘴𝘦𝘳𝘷𝘦𝘥⁣
🔹 𝘛𝘰𝘬𝘦𝘯-𝘉𝘢𝘴𝘦𝘥 – 𝘢𝘭𝘪𝘨𝘯𝘦𝘥 𝘸𝘪𝘵𝘩 𝘓𝘓𝘔 𝘵𝘰𝘬𝘦𝘯𝘪𝘻𝘢𝘵𝘪𝘰𝘯⁣
🔹 𝘚𝘭𝘪𝘥𝘪𝘯𝘨 𝘞𝘪𝘯𝘥𝘰𝘸 – 𝘰𝘷𝘦𝘳𝘭𝘢𝘱𝘱𝘪𝘯𝘨 𝘤𝘰𝘯𝘵𝘦𝘹𝘵⁣
🔹 𝘛𝘰𝘱𝘪𝘤-𝘉𝘢𝘴𝘦𝘥 – 𝘵𝘩𝘦𝘮𝘢𝘵𝘪𝘤 𝘤𝘭𝘶𝘴𝘵𝘦𝘳𝘪𝘯𝘨⁣
🔹 𝘗𝘳𝘰𝘱𝘰𝘴𝘪𝘵𝘪𝘰𝘯-𝘉𝘢𝘴𝘦𝘥 – 𝘭𝘰𝘨𝘪𝘤𝘢𝘭 𝘶𝘯𝘪𝘵 𝘴𝘱𝘭𝘪𝘵𝘴⁣
🔹 𝘊𝘰𝘯𝘵𝘦𝘹𝘵-𝘈𝘸𝘢𝘳𝘦 – 𝘕𝘓𝘗-𝘥𝘳𝘪𝘷𝘦𝘯 𝘥𝘦𝘤𝘪𝘴𝘪𝘰𝘯𝘴⁣
🔹 𝘈𝘨𝘦𝘯𝘵𝘪𝘤 – 𝘓𝘓𝘔𝘴 𝘤𝘩𝘶𝘯𝘬 𝘭𝘪𝘬𝘦 𝘩𝘶𝘮𝘢𝘯𝘴⁣
🔹 𝘚𝘮𝘢𝘭𝘭-𝘵𝘰-𝘉𝘪𝘨 – 𝘱𝘳𝘦𝘤𝘪𝘴𝘪𝘰𝘯 + 𝘤𝘰𝘯𝘵𝘦𝘹𝘵⁣
🔹 𝘚𝘵𝘢𝘵𝘪𝘴𝘵𝘪𝘤𝘢𝘭 – 𝘥𝘢𝘵𝘢-𝘥𝘳𝘪𝘷𝘦𝘯 𝘣𝘰𝘶𝘯𝘥𝘢𝘳𝘪𝘦𝘴⁣
🔹 𝘔𝘰𝘥𝘢𝘭𝘪𝘵𝘺-𝘚𝘱𝘦𝘤𝘪𝘧𝘪𝘤 – 𝘵𝘦𝘹𝘵, 𝘵𝘢𝘣𝘭𝘦𝘴, 𝘪𝘮𝘢𝘨𝘦𝘴, 𝘤𝘰𝘥𝘦⁣

𝐏𝐫𝐨 𝐭𝐢𝐩: 𝐓𝐡𝐞𝐫𝐞’𝐬 𝐧𝐨 𝐨𝐧𝐞-𝐬𝐢𝐳𝐞-𝐟𝐢𝐭𝐬-𝐚𝐥𝐥. 𝐓𝐡𝐞 𝐛𝐞𝐬𝐭 𝐑𝐀𝐆 𝐬𝐲𝐬𝐭𝐞𝐦𝐬 𝐮𝐬𝐞 𝐡𝐲𝐛𝐫𝐢𝐝 𝐜𝐡𝐮𝐧𝐤𝐢𝐧𝐠 𝐬𝐭𝐫𝐚𝐭𝐞𝐠𝐢𝐞𝐬 𝐭𝐚𝐢𝐥𝐨𝐫𝐞𝐝 𝐭𝐨 𝐭𝐡𝐞𝐢𝐫 𝐜𝐨𝐧𝐭𝐞𝐧𝐭 𝐚𝐧𝐝 𝐮𝐬𝐞 𝐜𝐚𝐬𝐞.⁣

https://t.me/DataAnalyticsX ⭐️
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AI for Data Processing and Analytics 🤖📊

Hex — a platform that helps analyze data through SQL and Python, automating most routine tasks 🚀💻

What it can do: 🛠
• generate SQL queries and Python code 💾🧩
• build charts and dashboards 📈📉
• explain results and answer questions in simple language 🗣🧠
• allow you to quickly create a report or a data app 📝📱

Link: https://hex.tech/ 🔗🌐

#DataAnalytics #HexTech #SQL #Python #Automation #DataScience

https://t.me/DataAnalyticsX ✈️
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🙏💸 500$ FOR THE FIRST 500 WHO JOIN THE CHANNEL! 🙏💸

Join our channel today for free! Tomorrow it will cost 500$!

https://t.me/+-WZeIeP8YI8wM2E6

You can join at this link! 👆👇

https://t.me/+-WZeIeP8YI8wM2E6
2
🙏💸 500$ FOR THE FIRST 500 WHO JOIN THE CHANNEL! 🙏💸

Join our channel today for free! Tomorrow it will cost 500$!

https://t.me/+-WZeIeP8YI8wM2E6

You can join at this link! 👆👇

https://t.me/+-WZeIeP8YI8wM2E6
1
Cheat sheet for working with data in Python (Data Science) 🐍📊

🔹 importing NumPy and pandas libraries — basic tools for data processing 🛠️

🔹 text files — reading/writing plain text and working via context manager 📄

🔹 tabular CSV/flat files — loading and processing structured data into DataFrame 📊

🔹 Excel files — working with sheets and tables 📑

🔹 SAS/Stata files — importing statistical formats 📉

🔹 HDF5 and Pickle — saving and loading complex data structures 💾

🔹 MATLAB files — reading .mat via SciPy 🧮

🔹 relational databases (SQL) — connecting, querying, and converting results into DataFrame 🗄️

🔹 Python dictionaries — accessing keys, values, and nested structures 🔑

🔹 data exploration (NumPy arrays and pandas DataFrames) — viewing types, sizes, and basic statistics 🔍

🔹 file system navigation — magic commands and os module for working with files and directories 📂

#Python #DataScience #Coding #Programming #Tech #Learning

https://t.me/DataAnalyticsX
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🔖 Collecting free tokens from all LLM providers in one project 🤖

The developer has created an open-source tool: you add API keys from platforms with free limits. 🔑💻

The system automatically switches between them when one runs out. 🔄🚀

⛓️ Link to GitHub
https://github.com/tashfeenahmed/freellmapi

#LLM #FreeTokens #OpenSource #AI #Developer #Tech
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⚡️ Machine Learning Roadmap 2026: a large map for entering ML without fairy tales about "neural networks in a month" 🤖

A large Russian-language roadmap for machine learning: from the first import of numpy to LLM, RAG, fine-tuning, AI agents, and MLOps, and even Vue coding. 🚀

Inside, there's a normal structure: what to learn, in what order, why it's needed, and what should be achieved in practice after each stage. 🧠

The roadmap is divided into 7 tracks: 📊

1. Foundation: Python, mathematics, statistics, tools 🏗️
2. Classic ML: scikit-learn, tabular data, metrics, validation 📈
3. Deep Learning: PyTorch, CNN, RNN, training loop 🧠
4. LLM and transformers: attention, KV-cache, RAG, LoRA, agents 🤖
5. Generative AI: images, videos, audio, multimodality 🎨
6. MLOps and production: Docker, Kubernetes, CI/CD, monitoring, serving ⚙️
7. Specialization: CV, NLP, RecSys, RL, Safety 🎯

The roadmap doesn't sell the illusion of "training a model - becoming an ML engineer". 🚫

In real work, a lot of time is spent on data, metrics, deployment, monitoring, reproducibility, and error analysis. Model is just part of the system. 🛠️

A good idea from the roadmap: LLM doesn't make a junior a senior. It accelerates someone who already understands the basics. Without the basics, a person just becomes an operator of Copilot, who can't explain why everything broke down. 🛑

In terms of time, it's no fairy tale either:

1. 0-3 months: mathematics, classic ML 📚
2. 3-6 months: Deep Learning and PyTorch 🔥
3. 6-12 months: LLM, RAG, fine-tuning, AI agents 🤖
4. 12+ months: MLOps, production, scaling, specialization 🚀

Here, seven large free courses on machine learning, mathematics, and Vue coding are also collected! 🎓

If you've long wanted to enter ML systematically, rather than jumping between videos about ChatGPT, Stable Diffusion, and "top-10 libraries", this is a good guide. 🗺️

https://github.com/justxor/MachineLearningRoadmap 🔗

#MachineLearning #AI #DataScience #LLM #MLOps #Python
3
Forwarded from Machine Learning
🔥 Awesome open-source project to learn more about Transformer Models! 🤖

We found this interactive website that shows you visually how transformer models work. 🌐📊

Transformer Explainer:
https://poloclub.github.io/transformer-explainer/

#TransformerModels #OpenSource #AI #MachineLearning #DataScience #Tech
4
Pandas vs Polars vs DuckDB: Which Library Should You Choose? 🤔📊

pandas remains the default choice for notebooks, exploratory analysis, visualization, and machine learning workflows 📝📈. Polars focus on fast, memory-efficient DataFrame processing 💾, while DuckDB brings a SQL-first approach for querying local files and embedded analytics 🗄️🔍.

Each tool fits a different kind of local data workflow 🛠️. In this article, we compare pandas, Polars, and DuckDB across performance, architecture, interoperability, and real-world use cases 🏆🔗.

More: https://www.analyticsvidhya.com/blog/2026/05/pandas-vs-polars-vs-duckdb/ 🔗

#DataScience #Pandas #Polars #DuckDB #Python #Analytics
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