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Data science and machine learning hub Python, SQL, stats, ML, deep learning, projects, PDFs, roadmaps and AI resources. For beginners, data scientists and ML engineers 👉 https://rebrand.ly/bigdatachannels DMCA: @disclosure_bds Contact: @mldatascientist
Show more📈 Analytical overview of Telegram channel Data science/ML/AI
Channel Data science/ML/AI (@datascience_bds) in the English language segment is an active participant. Currently, the community unites 13 660 subscribers, ranking 9 391 in the Technologies & Applications category and 31 743 in the India region.
📊 Audience metrics and dynamics
Since its creation on невідомо, the project has demonstrated rapid growth, gathering an audience of 13 660 subscribers.
According to the latest data from 07 June, 2026, the channel demonstrates stable activity. Although there has been a change in the number of participants by 151 over the last 30 days and by -5 over the last 24 hours, overall reach remains high.
- Verification status: Not verified
- Engagement rate (ER): The average audience engagement rate is 7.92%. Within the first 24 hours after publication, content typically collects 2.33% reactions from the total number of subscribers.
- Post reach: On average, each post receives 1 082 views. Within the first day, a publication typically gains 318 views.
- Reactions and interaction: The audience actively supports content: the average number of reactions per post is 5.
- Thematic interests: Content is focused on key topics such as panda, learning, row, api, ethic.
📝 Description and content policy
The author describes the resource as a platform for expressing subjective opinions:
“Data science and machine learning hub
Python, SQL, stats, ML, deep learning, projects, PDFs, roadmaps and AI resources.
For beginners, data scientists and ML engineers
👉 https://rebrand.ly/bigdatachannels
DMCA: @disclosure_bds
Contact: @mldatasci...”
Thanks to the high frequency of updates (latest data received on 08 June, 2026), the channel maintains relevance and a high level of publication reach. Analytics show that the audience actively interacts with content, making it an important point of influence in the Technologies & Applications category.
13 660
Subscribers
-524 hours
+527 days
+15130 days
Posts Archive
13 660
Why Feature Scaling Is Required in Many Algorithms
Algorithms like kNN, SVMs, and gradient descent assume that features share comparable scales.
If one feature ranges from 0 to 1 and another from 0 to 10000, the larger one dominates distances and gradients.
Scaling equalizes the influence so the model focuses on relative patterns.
Key takeaway❔
Unscaled data hides structure. Scaling makes patterns visible for the algorithm.
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✅ Reinforcement Learning (RL) Basics You Should Know 🎮🧠
Reinforcement Learning is a type of machine learning where an agent learns by interacting with an environment to achieve a goal — through trial and error.
1️⃣ What is Reinforcement Learning?
It’s a learning approach where an agent takes actions in an environment, gets feedback as rewards or penalties, and learns to maximize cumulative reward.
2️⃣ Key Terminologies:
- Agent: Learner or decision maker
- Environment: The world the agent interacts with
- Action: What the agent does
- State: Current situation of the agent
- Reward: Feedback from the environment
- Policy: Strategy the agent uses to choose actions
- Value function: Expected reward from a state
3️⃣ Real-World Applications:
- Game AI (e.g. AlphaGo, Chess bots)
- Robotics (walking, grasping)
- Self-driving cars
- Trading bots
- Industrial control systems
4️⃣ Common Algorithms:
- Q-Learning: Learns value of action in a state
- SARSA: Like Q-learning but learns from current policy
- DQN (Deep Q Network): Combines Q-learning with deep neural networks
- Policy Gradient: Directly optimizes the policy
- Actor-Critic: Combines value-based and policy-based methods
5️⃣ Reward Example:
In a game,
- +1 for reaching goal
- -1 for hitting obstacle
- 0 for doing nothing
6️⃣ Key Libraries:
- OpenAI Gym
- Stable-Baselines3
- RLlib
- TensorFlow Agents
- PyTorch RL
7️⃣ Simple Q-Learning Example:
Q[state, action] = Q[state, action] + learning_rate * (
reward + discount_factor * max(Q[next_state]) - Q[state, action])
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✅ Generative AI Basics You Should Know 🤖🎨
Generative AI focuses on creating new content—like text, images, music, code, or even video—using machine learning models.
1️⃣ What is Generative AI?
A subfield of AI where models generate data similar to what they were trained on (text, images, audio, etc.).
2️⃣ Common Applications:
- Text generation (ChatGPT)
- Image generation (DALL·E, Midjourney)
- Code generation (GitHub Copilot)
- Music creation
- Video synthesis
- AI avatars & deepfakes
3️⃣ Key Models in Generative AI:
- GPT (Generative Pre-trained Transformer) – Text generation
- DALL·E / Stable Diffusion – Image creation from prompts
- StyleGAN – Face/image generation
- MusicLM – AI music generation
- Whisper – Audio transcription
4️⃣ How It Works:
- Trains on large datasets
- Learns patterns, style, structure
- Generates new content based on prompts or inputs
5️⃣ Tools You Can Try:
- ChatGPT
- Bing Image Creator
- RunwayML
- Leonardo AI
- Poe
- Adobe Firefly
6️⃣ Prompt Engineering:
Crafting clear and specific prompts is key to getting useful results from generative models.
7️⃣ Text-to-Image Example Prompt:
"An astronaut riding a horse in a futuristic city, digital art style."
8️⃣ Challenges in Generative AI:
- Bias and misinformation
- Copyright issues
- Hallucinations (false content)
- Ethical concerns (deepfakes, impersonation)
9️⃣ Popular Use Cases:
- Content creation (blogs, ads)
- Game asset generation
- Marketing and branding
- Personalized customer experiences
🔟 Future Scope:
- Human-AI collaboration in art and work
- Faster content pipelines
- AI-assisted creativity
💬 Tap ❤️ for more!
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🧠📚 RAG Explained for Beginners (No Confusion, I Promise)
You hear RAG everywhere lately… so what is it actually? 🤔
RAG = Retrieval Augmented Generation
In simple words 👇
RAG means:
👉 *LLM + your own data working together*
Instead of guessing answers, the model:
1️⃣ Searches relevant documents
2️⃣ Reads them
3️⃣ Uses that info to answer
That’s it. No magic. Just smart setup.
🛠 How RAG works step by step
• Your data is stored as embeddings
• A question comes in
• Relevant chunks are retrieved
• LLM generates an answer using that context
Why RAG is so popular 🔥
• Reduces hallucinations
• Works with private data
• No retraining needed
• Much cheaper than fine tuning
Where RAG is used today 🚀
• Company chatbots
• Internal knowledge bases
• Document search
• Customer support assistants
💡 Reality check
LLMs alone are smart.
LLMs + RAG are actually useful.
If you are building anything serious with LLMs,
RAG is not optional anymore 😉
13 660
✅ Speech Recognition Basics You Should Know 🎙️🧠
Speech Recognition enables machines to understand and convert spoken language into text.
1️⃣ What is Speech Recognition?
It’s a field of AI and NLP that focuses on converting human speech into machine-readable text.
2️⃣ Common Applications:
- Voice assistants (Alexa, Siri, Google Assistant)
- Transcription services
- Voice-to-text typing
- Call center automation
- Accessibility tools (voice commands for disabled users)
3️⃣ Key Tasks:
- Speech-to-Text (STT): Converting audio to text
- Voice Activity Detection: Identify when someone is speaking
- Speaker Identification: Recognize who is speaking
- Command Recognition: Identify specific commands (e.g., “Play music”)
- Language & Accent Adaptation
4️⃣ Popular Libraries & Tools:
- Google Speech API
- Mozilla DeepSpeech
- OpenAI Whisper
- CMU Sphinx
- SpeechRecognition (Python library)
- Kaldi
5️⃣ Simple Python Example:
import speech_recognition as sr
r = sr.Recognizer()
with sr.Microphone() as source:
print("Speak now...")
audio = r.listen(source)
text = r.recognize_google(audio)
print("You said:", text)13 660
SQL Scenario Based Practical Questions & Answers.pdf17.70 MB
13 660
Condition Number: The Hidden Math That Determines Model Stability 🧮
Have you ever asked yourself why some models behave erratically with tiny changes in input?
The reason is often a property called the condition number, which measures how sensitive a problem is to small perturbations.
If a matrix has a high condition number, tiny changes in the data can produce massive changes in the solution.
This is why linear regression sometimes explodes, why normal equations fail, why gradient descent struggles, and why normalization dramatically improves training.
You don’t need to memorize the formula. You just need to recognize the intuition:
🔴 A badly conditioned problem is like balancing a pencil on its tip. Every vibration throws it off.
🟢 A well-conditioned problem is like placing a marble in a bowl. It naturally stabilizes.
Understanding conditioning helps you choose the right solver, detect multicollinearity, and prevent numerical disasters before training ever begins.
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✅ Expert Systems Basics You Should Know 🧠🤖
Expert Systems are one of the earliest and most practical applications of Artificial Intelligence, designed to replicate the decision making ability of human experts.
🔹 1. What is an Expert System?
An Expert System is an AI program that uses knowledge and predefined rules to solve complex problems that normally require human expertise.
🔹 2. Core Components of an Expert System:
• Knowledge Base: Stores facts, rules, and domain knowledge
• Inference Engine: Applies rules to make logical decisions
• User Interface: Allows interaction between user and system
• Explanation System: Explains how and why a decision was made
🔹 3. How Expert Systems Work:
→ User provides input
→ Inference engine evaluates rules
→ System reaches a conclusion or recommendation
→ Explanation is generated if required
🔹 4. Types of Reasoning Used:
• Forward Chaining: Starts from known facts and moves toward conclusions
• Backward Chaining: Starts from a goal and works backward to facts
🔹 5. Common Use Cases:
• Medical diagnosis
• Legal advisory systems
• Loan approval systems
• Machine fault detection
• Customer support decision systems
🔹 6. Real World Examples:
• MYCIN for medical diagnosis
• XCON for computer system configuration
• Rule based customer support chatbots
🔹 7. Advantages:
• Consistent decision making
• Works 24x7
• Reduces human error
• Preserves expert knowledge
🔹 8. Limitations:
• Expensive to build and maintain
• Limited to specific domains
• Cannot learn automatically
• Lacks human intuition
🔹 9. Expert Systems vs Machine Learning:
• Expert Systems use predefined rules
• ML systems learn from data
• Expert Systems are explainable
• ML models are often black boxes
🔹 10. Where Expert Systems Are Still Used Today:
• Healthcare decision support
• Banking and finance rules engines
• Compliance and regulatory systems
• Industrial automation
💡 Learning Expert Systems helps you understand the foundation of modern AI reasoning systems.
💬 Tap ❤️ for more!
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Dear friends 😊,
I want 2026 to be a year of bonding, connections, and real conversations 🤗
For years, we have shared courses, resources, news, and knowledge. But I want to talk with you, ask questions, give answers, and learn together.
With over 10 years in data science, software engineering, and AI 🤓, I have built and shipped real world systems that generated millions of dollars. I have made mistakes, learned valuable lessons, and I am always happy to share my experience openly.
❓ Feel free to ask me anything
Career, learning paths, real projects, tech decisions, or doubts.
This is why I am reminding you that each channel has its own discussion group.
You can open it via
channel name → Discuss buttonor via the links below 👇 📌 Channels and their discussion groups • Free courses by Big Data Specialist → linked discussion group • Data Science / ML / AI → linked discussion group • GitHub Repositories → linked discussion group • Coding Interview Preparation → linked discussion group • Data Visualization → linked discussion group • Python Learning → linked discussion group • Tech News → linked discussion group • Logic Quest → linked discussion group • Data Science Research Papers → linked discussion group • Web Development → linked discussion group • AI Revolution → linked discussion group • Talks with ChatGPT → linked discussion group • Programming Memes → linked discussion group • Code Comics → linked discussion group 💬 Join the conversations, ask questions, share your journey. Looking forward to connecting with you all 🚀 I will share this message across all our channels so everyone can see it. Hope you do not mind 🙏 See you in the discussions 👋
