🤖 AI News of the Day: 23 July 2026

1️⃣ OpenAI and Hugging Face investigate AI security incident
OpenAI and Hugging Face shared details of a security incident discovered during AI model evaluation and are working together to strengthen safeguards for advanced AI systems.

2️⃣ Google unveils Gemini 3.6 Flash
Google introduced Gemini 3.6 Flash, along with Gemini 3.5 Flash-Lite and Gemini 3.5 Flash Cyber, focusing on faster performance, lower latency, and AI agents for enterprise applications.

3️⃣ Microsoft expands AI partnership with Mistral
Microsoft and Mistral AI announced a broader strategic partnership to deliver frontier AI models for enterprises and regulated industries, backed by Microsoft's cloud infrastructure.

4️⃣ Amazon restructures its AGI division
Amazon has reduced jobs within its Artificial General Intelligence (AGI) group as it refocuses resources on its highest-priority AI initiatives while continuing long-term AGI development.

5️⃣ AI infrastructure spending continues to surge
Major technology companies are significantly increasing investments in AI chips, data centers, and cloud infrastructure, with Google expected to spend even more on AI capacity over the coming years.

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1. CS109 Data Science
http://cs109.github.io/2015/pages/videos.html

2. Data Science Essentials
https://www.edx.org/course/data-science-essentials

3. Learning From Data from California Institute of Technology
http://work.caltech.edu/telecourse

4. Mathematics for Machine Learning by University of California, Berkeley
https://gwthomas.github.io/docs/math4ml.pdf?fbclid=IwAR2UsBgZW9MRgS3nEo8Zh_ukUFnwtFeQS8Ek3OjGxZtDa7UxTYgIs_9pzSI

5. Foundations of Data Science by Avrim Blum, John Hopcroft, and Ravindran Kannan
https://www.cs.cornell.edu/jeh/book.pdf?fbclid=IwAR19tDrnNh8OxAU1S-tPklL1mqj-51J1EJUHmcHIu2y6yEv5ugrWmySI2WY

6. Python Data Science Handbook
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7. CS 221 ― Artificial Intelligence
https://stanford.edu/~shervine/teaching/cs-221/

8. Ten Lectures and Forty-Two Open Problems in the Mathematics of Data Science
https://ocw.mit.edu/courses/mathematics/18-s096-topics-in-mathematics-of-data-science-fall-2015/lecture-notes/MIT18_S096F15_TenLec.pdf

9. Python for Data Analysis by Boston University
https://www.bu.edu/tech/files/2017/09/Python-for-Data-Analysis.pptx

10. Data Mining bu University of Buffalo
https://cedar.buffalo.edu/~srihari/CSE626/index.html?fbclid=IwAR3XZ50uSZAb3u5BP1Qz68x13_xNEH8EdEBQC9tmGEp1BoxLNpZuBCtfMSE

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By E&ICT Academy, IIT Roorkee

Batch Closing Soon - 26th July 2026

A-Z of essential data science concepts

A: Algorithm - A set of rules or instructions for solving a problem or completing a task.
B: Big Data - Large and complex datasets that traditional data processing applications are unable to handle efficiently.
C: Classification - A type of machine learning task that involves assigning labels to instances based on their characteristics.
D: Data Mining - The process of discovering patterns and extracting useful information from large datasets.
E: Ensemble Learning - A machine learning technique that combines multiple models to improve predictive performance.
F: Feature Engineering - The process of selecting, extracting, and transforming features from raw data to improve model performance.
G: Gradient Descent - An optimization algorithm used to minimize the error of a model by adjusting its parameters iteratively.
H: Hypothesis Testing - A statistical method used to make inferences about a population based on sample data.
I: Imputation - The process of replacing missing values in a dataset with estimated values.
J: Joint Probability - The probability of the intersection of two or more events occurring simultaneously.
K: K-Means Clustering - A popular unsupervised machine learning algorithm used for clustering data points into groups.
L: Logistic Regression - A statistical model used for binary classification tasks.
M: Machine Learning - A subset of artificial intelligence that enables systems to learn from data and improve performance over time.
N: Neural Network - A computer system inspired by the structure of the human brain, used for various machine learning tasks.
O: Outlier Detection - The process of identifying observations in a dataset that significantly deviate from the rest of the data points.
P: Precision and Recall - Evaluation metrics used to assess the performance of classification models.
Q: Quantitative Analysis - The process of using mathematical and statistical methods to analyze and interpret data.
R: Regression Analysis - A statistical technique used to model the relationship between a dependent variable and one or more independent variables.
S: Support Vector Machine - A supervised machine learning algorithm used for classification and regression tasks.
T: Time Series Analysis - The study of data collected over time to detect patterns, trends, and seasonal variations.
U: Unsupervised Learning - Machine learning techniques used to identify patterns and relationships in data without labeled outcomes.
V: Validation - The process of assessing the performance and generalization of a machine learning model using independent datasets.
W: Weka - A popular open-source software tool used for data mining and machine learning tasks.
X: XGBoost - An optimized implementation of gradient boosting that is widely used for classification and regression tasks.
Y: Yarn - A resource manager used in Apache Hadoop for managing resources across distributed clusters.
Z: Zero-Inflated Model - A statistical model used to analyze data with excess zeros, commonly found in count data.

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1️⃣ Understand the Job Role
Companies expect knowledge in:
• Frontend basics (HTML, CSS, JS)
• Git GitHub
• Responsive design
• Basic debugging and testing
• Communication with designers/devs

2️⃣ What Recruiters Look For
✔️ Real projects (GitHub)
✔️ Understanding of fundamentals
✔️ Problem-solving
✔️ Code readability
✔️ Willingness to learn

3️⃣ Core Interview Topics Questions

A. HTML/CSS
• How does the box model work?
• Difference between id and class
• Flexbox vs Grid

B. JavaScript
• What is hoisting?
• Difference between var, let, const
• Explain closures or event bubbling

C. React (if applicable)
• What is a component?
• State vs Props
• What are hooks (useState, useEffect)?

D. Coding Rounds
• Reverse a string
• FizzBuzz
• Find max/min in array
• Remove duplicates

E. Debugging + Tools
• Use browser dev tools
• Console logging
• Understanding basic error messages

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✅ Projects to show:
• Responsive website
• To-do app
• Blog or portfolio site
• API-based app (e.g., weather, movie search)
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• Why do you want to be a web developer?
• Tell me about a project you built.
• How do you handle bugs or challenges?

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• VS Code shortcuts
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SQL Checklist for Data Analysts 🚀

🌱 Getting Started with SQL

👉 Install SQL database software (MySQL, PostgreSQL, or SQL Server)
👉 Set up your database environment and connect to your data

🔍 Load & Explore Data

👉 Understand tables, rows, and columns
👉 Use SELECT to retrieve data and LIMIT to get a sample view
👉 Explore schema and table structure with DESCRIBE or SHOW COLUMNS

🧹 Data Filtering Essentials

👉 Filter data using WHERE clauses
👉 Use comparison operators (=, >, <) and logical operators (AND, OR)
👉 Handle NULL values with IS NULL and IS NOT NULL

🔄 Transforming Data

👉 Sort data with ORDER BY
👉 Create calculated columns with AS and use arithmetic operators (+, -, *, /)
👉 Use CASE WHEN for conditional expressions

📊 Aggregation & Grouping

👉 Summarize data with aggregation functions: SUM, COUNT, AVG, MIN, MAX
👉 Group data with GROUP BY and filter groups with HAVING

🔗 Mastering Joins

👉 Combine tables with JOIN (INNER, LEFT, RIGHT, FULL OUTER)
👉 Understand primary and foreign keys to create meaningful joins
👉 Use SELF JOIN for analyzing data within the same table

📅 Date & Time Data

👉 Convert dates and extract parts (year, month, day) with EXTRACT
👉 Perform time-based analysis using DATEDIFF and date functions

📈 Quick Exploratory Analysis

👉 Calculate statistics to understand data distributions
👉 Use GROUP BY with aggregation for category-based analysis

📉 Basic Data Visualizations (Optional)

👉 Integrate SQL with visualization tools (Power BI, Tableau)
👉 Create charts directly in SQL with certain extensions (like MySQL's built-in charts)

💪 Advanced Query Handling

👉 Master subqueries and nested queries
👉 Use WITH (Common Table Expressions) for complex queries
👉 Window functions for running totals, moving averages, and rankings (ROW_NUMBER, RANK, LAG, LEAD)

🚀 Optimize for Performance

👉 Index critical columns for faster querying
👉 Analyze query plans and use optimizations
👉 Limit result sets and avoid excessive joins for efficiency

📂 Practice Projects

👉 Use real datasets to perform SQL analysis
👉 Create a portfolio with case studies and projects

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