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Breaking into Data Science doesnโ€™t need to be complicated.

If youโ€™re just starting out,

Hereโ€™s how to simplify your approach:

Avoid:
๐Ÿšซ Trying to learn every tool and library (Python, R, TensorFlow, Hadoop, etc.) all at once.
๐Ÿšซ Spending months on theoretical concepts without hands-on practice.
๐Ÿšซ Overloading your resume with keywords instead of impactful projects.
๐Ÿšซ Believing you need a Ph.D. to break into the field.

Instead:

โœ… Start with Python or Rโ€”focus on mastering one language first.
โœ… Learn how to work with structured data (Excel or SQL) - this is your bread and butter.
โœ… Dive into a simple machine learning model (like linear regression) to understand the basics.
โœ… Solve real-world problems with open datasets and share them in a portfolio.
โœ… Build a project that tells a story - why the problem matters, what you found, and what actions it suggests.

Data Science & Machine Learning Resources: https://topmate.io/coding/914624

Like if you need similar content ๐Ÿ˜„๐Ÿ‘

Hope this helps you ๐Ÿ˜Š

#ai #datascience
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๐Ÿฏ๐Ÿฌ+ ๐—™๐—ฟ๐—ฒ๐—ฒ ๐—–๐—ฒ๐—ฟ๐˜๐—ถ๐—ณ๐—ถ๐—ฒ๐—ฑ ๐—–๐—ผ๐˜‚๐—ฟ๐˜€๐—ฒ๐˜€ ๐—ฏ๐˜† ๐—›๐—ฃ ๐—Ÿ๐—œ๐—™๐—˜ ๐˜๐—ผ ๐—ฆ๐˜‚๐—ฝ๐—ฒ๐—ฟ๐—ฐ๐—ต๐—ฎ๐—ฟ๐—ด๐—ฒ ๐—ฌ๐—ผ๐˜‚๐—ฟ ๐—–๐—ฎ๐—ฟ๐—ฒ๐—ฒ๐—ฟ๐Ÿ˜

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Important questions to ace your machine learning interview with an approach to answer:

1. Machine Learning Project Lifecycle:
   - Define the problem
   - Gather and preprocess data
   - Choose a model and train it
   - Evaluate model performance
   - Tune and optimize the model
   - Deploy and maintain the model

2. Supervised vs Unsupervised Learning:
   - Supervised Learning: Uses labeled data for training (e.g., predicting house prices from features).
   - Unsupervised Learning: Uses unlabeled data to find patterns or groupings (e.g., clustering customer segments).

3. Evaluation Metrics for Regression:
   - Mean Absolute Error (MAE)
   - Mean Squared Error (MSE)
   - Root Mean Squared Error (RMSE)
   - R-squared (coefficient of determination)

4. Overfitting and Prevention:
   - Overfitting: Model learns the noise instead of the underlying pattern.
   - Prevention: Use simpler models, cross-validation, regularization.

5. Bias-Variance Tradeoff:
   - Balancing error due to bias (underfitting) and variance (overfitting) to find an optimal model complexity.

6. Cross-Validation:
   - Technique to assess model performance by splitting data into multiple subsets for training and validation.

7. Feature Selection Techniques:
   - Filter methods (e.g., correlation analysis)
   - Wrapper methods (e.g., recursive feature elimination)
   - Embedded methods (e.g., Lasso regularization)

8. Assumptions of Linear Regression:
   - Linearity
   - Independence of errors
   - Homoscedasticity (constant variance)
   - No multicollinearity

9. Regularization in Linear Models:
   - Adds a penalty term to the loss function to prevent overfitting by shrinking coefficients.

10. Classification vs Regression:
    - Classification: Predicts a categorical outcome (e.g., class labels).
    - Regression: Predicts a continuous numerical outcome (e.g., house price).

11. Dimensionality Reduction Algorithms:
    - Principal Component Analysis (PCA)
    - t-Distributed Stochastic Neighbor Embedding (t-SNE)

12. Decision Tree:
    - Tree-like model where internal nodes represent features, branches represent decisions, and leaf nodes represent outcomes.

13. Ensemble Methods:
    - Combine predictions from multiple models to improve accuracy (e.g., Random Forest, Gradient Boosting).

14. Handling Missing or Corrupted Data:
    - Imputation (e.g., mean substitution)
    - Removing rows or columns with missing data
    - Using algorithms robust to missing values

15. Kernels in Support Vector Machines (SVM):
    - Linear kernel
    - Polynomial kernel
    - Radial Basis Function (RBF) kernel

Data Science Interview Resources
๐Ÿ‘‡๐Ÿ‘‡
https://topmate.io/coding/914624

Like for more ๐Ÿ˜„
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๐Ÿฒ ๐—™๐—ฅ๐—˜๐—˜ ๐—–๐—ผ๐˜‚๐—ฟ๐˜€๐—ฒ๐˜€ ๐˜๐—ผ ๐— ๐—ฎ๐˜€๐˜๐—ฒ๐—ฟ ๐—™๐˜‚๐˜๐˜‚๐—ฟ๐—ฒ-๐—ฃ๐—ฟ๐—ผ๐—ผ๐—ณ ๐—ฆ๐—ธ๐—ถ๐—น๐—น๐˜€ ๐—ถ๐—ป ๐Ÿฎ๐Ÿฌ๐Ÿฎ๐Ÿฑ๐Ÿ˜

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Complete roadmap to learn Python and Data Structures & Algorithms (DSA) in 2 months

### Week 1: Introduction to Python

Day 1-2: Basics of Python
- Python setup (installation and IDE setup)
- Basic syntax, variables, and data types
- Operators and expressions

Day 3-4: Control Structures
- Conditional statements (if, elif, else)
- Loops (for, while)

Day 5-6: Functions and Modules
- Function definitions, parameters, and return values
- Built-in functions and importing modules

Day 7: Practice Day
- Solve basic problems on platforms like HackerRank or LeetCode

### Week 2: Advanced Python Concepts

Day 8-9: Data Structures in Python
- Lists, tuples, sets, and dictionaries
- List comprehensions and generator expressions

Day 10-11: Strings and File I/O
- String manipulation and methods
- Reading from and writing to files

Day 12-13: Object-Oriented Programming (OOP)
- Classes and objects
- Inheritance, polymorphism, encapsulation

Day 14: Practice Day
- Solve intermediate problems on coding platforms

### Week 3: Introduction to Data Structures

Day 15-16: Arrays and Linked Lists
- Understanding arrays and their operations
- Singly and doubly linked lists

Day 17-18: Stacks and Queues
- Implementation and applications of stacks
- Implementation and applications of queues

Day 19-20: Recursion
- Basics of recursion and solving problems using recursion
- Recursive vs iterative solutions

Day 21: Practice Day
- Solve problems related to arrays, linked lists, stacks, and queues

### Week 4: Fundamental Algorithms

Day 22-23: Sorting Algorithms
- Bubble sort, selection sort, insertion sort
- Merge sort and quicksort

Day 24-25: Searching Algorithms
- Linear search and binary search
- Applications and complexity analysis

Day 26-27: Hashing
- Hash tables and hash functions
- Collision resolution techniques

Day 28: Practice Day
- Solve problems on sorting, searching, and hashing

### Week 5: Advanced Data Structures

Day 29-30: Trees
- Binary trees, binary search trees (BST)
- Tree traversals (in-order, pre-order, post-order)

Day 31-32: Heaps and Priority Queues
- Understanding heaps (min-heap, max-heap)
- Implementing priority queues using heaps

Day 33-34: Graphs
- Representation of graphs (adjacency matrix, adjacency list)
- Depth-first search (DFS) and breadth-first search (BFS)

Day 35: Practice Day
- Solve problems on trees, heaps, and graphs

### Week 6: Advanced Algorithms

Day 36-37: Dynamic Programming
- Introduction to dynamic programming
- Solving common DP problems (e.g., Fibonacci, knapsack)

Day 38-39: Greedy Algorithms
- Understanding greedy strategy
- Solving problems using greedy algorithms

Day 40-41: Graph Algorithms
- Dijkstraโ€™s algorithm for shortest path
- Kruskalโ€™s and Primโ€™s algorithms for minimum spanning tree

Day 42: Practice Day
- Solve problems on dynamic programming, greedy algorithms, and advanced graph algorithms

### Week 7: Problem Solving and Optimization

Day 43-44: Problem-Solving Techniques
- Backtracking, bit manipulation, and combinatorial problems

Day 45-46: Practice Competitive Programming
- Participate in contests on platforms like Codeforces or CodeChef

Day 47-48: Mock Interviews and Coding Challenges
- Simulate technical interviews
- Focus on time management and optimization

Day 49: Review and Revise
- Go through notes and previously solved problems
- Identify weak areas and work on them

### Week 8: Final Stretch and Project

Day 50-52: Build a Project
- Use your knowledge to build a substantial project in Python involving DSA concepts

Day 53-54: Code Review and Testing
- Refactor your project code
- Write tests for your project

Day 55-56: Final Practice
- Solve problems from previous contests or new challenging problems

Day 57-58: Documentation and Presentation
- Document your project and prepare a presentation or a detailed report

Day 59-60: Reflection and Future Plan
- Reflect on what you've learned
- Plan your next steps (advanced topics, more projects, etc.)

Best DSA RESOURCES: https://topmate.io/coding/886874

Credits: https://t.iss.one/free4unow_backup

ENJOY LEARNING ๐Ÿ‘๐Ÿ‘
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๐Ÿฑ ๐—™๐—ฟ๐—ฒ๐—ฒ ๐— ๐—œ๐—ง ๐—–๐—ผ๐˜‚๐—ฟ๐˜€๐—ฒ๐˜€ ๐—ฌ๐—ผ๐˜‚ ๐—–๐—ฎ๐—ป ๐—ง๐—ฎ๐—ธ๐—ฒ ๐—ข๐—ป๐—น๐—ถ๐—ป๐—ฒ ๐—ถ๐—ป ๐Ÿฎ๐Ÿฌ๐Ÿฎ๐Ÿฑ๐Ÿ˜

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Use Chat GPT to prepare for your next Interview

This could be the most helpful thing for people aspiring for new jobs.

A few prompts that can help you here are:

๐Ÿ’กPrompt 1: Here is a Job description of a job I am looking to apply for. Can you tell me what skills and questions should I prepare for? {Paste JD}

๐Ÿ’กPrompt 2: Here is my resume. Can you tell me what optimization I can do to make it more likely to get selected for this interview? {Paste Resume in text}

๐Ÿ’กPrompt 3: Act as an Interviewer for the role of a {product manager} at {Company}. Ask me 5 questions one by one, wait for my response, and then tell me how I did. You should give feedback in the following format: What was good, where are the gaps, and how to address the gaps?

๐Ÿ’กPrompt 4: I am interviewing for this job given in the JD. Can you help me understand the company, its role, its products, main competitors, and challenges for the company?

๐Ÿ’กPrompt 5: What are the few questions I should ask at the end of the interview which can help me learn about the culture of the company?

Free book to master ChatGPT: https://t.iss.one/InterviewBooks/166

ENJOY LEARNING ๐Ÿ‘๐Ÿ‘
๐Ÿ‘4โค1
๐—™๐—ฟ๐—ฒ๐—ฒ ๐—ข๐—ฟ๐—ฎ๐—ฐ๐—น๐—ฒ ๐—”๐—œ ๐—–๐—ฒ๐—ฟ๐˜๐—ถ๐—ณ๐—ถ๐—ฐ๐—ฎ๐˜๐—ถ๐—ผ๐—ป ๐˜๐—ผ ๐—•๐—ผ๐—ผ๐˜€๐˜ ๐—ฌ๐—ผ๐˜‚๐—ฟ ๐—–๐—ฎ๐—ฟ๐—ฒ๐—ฒ๐—ฟ๐Ÿ˜

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Forwarded from Artificial Intelligence
๐Ÿณ+ ๐—™๐—ฟ๐—ฒ๐—ฒ ๐—š๐—ผ๐—ผ๐—ด๐—น๐—ฒ ๐—–๐—ฒ๐—ฟ๐˜๐—ถ๐—ณ๐—ถ๐—ฐ๐—ฎ๐˜๐—ถ๐—ผ๐—ป๐˜€ ๐˜๐—ผ ๐—•๐—ผ๐—ผ๐˜€๐˜ ๐—ฌ๐—ผ๐˜‚๐—ฟ ๐—–๐—ฎ๐—ฟ๐—ฒ๐—ฒ๐—ฟ๐Ÿ˜

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Technical Questions Wipro may ask on their interviews

1. Data Structures and Algorithms:
   - "Can you explain the difference between an array and a linked list? When would you use one over the other in a real-world application?"
   - "Write code to implement a binary search algorithm."

2. Programming Languages:
   - "What is the difference between Java and C++? Can you provide an example of a situation where you would prefer one language over the other?"
   - "Write a program in your preferred programming language to reverse a string."

3. Database and SQL:
   - "Explain the ACID properties in the context of database transactions."
   - "Write an SQL query to retrieve all records from a 'customers' table where the 'country' column is 'India'."

4. Networking:
   - "What is the difference between TCP and UDP? When would you choose one over the other for a specific application?"
   - "Explain the concept of DNS (Domain Name System) and how it works."

5. System Design:
   - "Design a simple online messaging system. What components would you include, and how would they interact?"
   - "How would you ensure the scalability and fault tolerance of a web service or application?"
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Forwarded from Artificial Intelligence
๐Ÿฒ ๐—™๐—ฅ๐—˜๐—˜ ๐——๐—ฎ๐˜๐—ฎ ๐—”๐—ป๐—ฎ๐—น๐˜†๐˜๐—ถ๐—ฐ๐˜€ ๐—–๐—ผ๐˜‚๐—ฟ๐˜€๐—ฒ๐˜€ ๐˜๐—ผ ๐— ๐—ฎ๐˜€๐˜๐—ฒ๐—ฟ ๐—ฃ๐˜†๐˜๐—ต๐—ผ๐—ป, ๐—ฆ๐—ค๐—Ÿ & ๐— ๐—Ÿ ๐—ถ๐—ป ๐Ÿฎ๐Ÿฌ๐Ÿฎ๐Ÿฑ๐Ÿ˜

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Tools Every AI Engineer Should Know

1. Data Science Tools
Python: Preferred language with libraries like NumPy, Pandas, Scikit-learn.
R: Ideal for statistical analysis and data visualization.
Jupyter Notebook: Interactive coding environment for Python and R.
MATLAB: Used for mathematical modeling and algorithm development.
RapidMiner: Drag-and-drop platform for machine learning workflows.
KNIME: Open-source analytics platform for data integration and analysis.

2. Machine Learning Tools
Scikit-learn: Comprehensive library for traditional ML algorithms.
XGBoost & LightGBM: Specialized tools for gradient boosting.
TensorFlow: Open-source framework for ML and DL.
PyTorch: Popular DL framework with a dynamic computation graph.
H2O.ai: Scalable platform for ML and AutoML.
Auto-sklearn: AutoML for automating the ML pipeline.

3. Deep Learning Tools
Keras: User-friendly high-level API for building neural networks.
PyTorch: Excellent for research and production in DL.
TensorFlow: Versatile for both research and deployment.
ONNX: Open format for model interoperability.
OpenCV: For image processing and computer vision.
Hugging Face: Focused on natural language processing.

4. Data Engineering Tools
Apache Hadoop: Framework for distributed storage and processing.
Apache Spark: Fast cluster-computing framework.
Kafka: Distributed streaming platform.
Airflow: Workflow automation tool.
Fivetran: ETL tool for data integration.
dbt: Data transformation tool using SQL.

5. Data Visualization Tools
Tableau: Drag-and-drop BI tool for interactive dashboards.
Power BI: Microsoftโ€™s BI platform for data analysis and visualization.
Matplotlib & Seaborn: Python libraries for static and interactive plots.
Plotly: Interactive plotting library with Dash for web apps.
D3.js: JavaScript library for creating dynamic web visualizations.

6. Cloud Platforms
AWS: Services like SageMaker for ML model building.
Google Cloud Platform (GCP): Tools like BigQuery and AutoML.
Microsoft Azure: Azure ML Studio for ML workflows.
IBM Watson: AI platform for custom model development.

7. Version Control and Collaboration Tools
Git: Version control system.
GitHub/GitLab: Platforms for code sharing and collaboration.
Bitbucket: Version control for teams.

8. Other Essential Tools

Docker: For containerizing applications.
Kubernetes: Orchestration of containerized applications.
MLflow: Experiment tracking and deployment.
Weights & Biases (W&B): Experiment tracking and collaboration.
Pandas Profiling: Automated data profiling.
BigQuery/Athena: Serverless data warehousing tools.
Mastering these tools will ensure you are well-equipped to handle various challenges across the AI lifecycle.

#artificialintelligence
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๐Ÿฑ ๐—ฃ๐—ผ๐˜„๐—ฒ๐—ฟ๐—ณ๐˜‚๐—น ๐—ฃ๐˜†๐˜๐—ต๐—ผ๐—ป ๐—ฃ๐—ฟ๐—ผ๐—ท๐—ฒ๐—ฐ๐˜๐˜€ ๐˜๐—ผ ๐—”๐—ฑ๐—ฑ ๐˜๐—ผ ๐—ฌ๐—ผ๐˜‚๐—ฟ ๐—ฅ๐—ฒ๐˜€๐˜‚๐—บ๐—ฒ ๐—ถ๐—ป ๐Ÿฎ๐Ÿฌ๐Ÿฎ๐Ÿฑ๐Ÿ˜

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100 Days Data Science Challenge ๐Ÿ‘†
โค5๐Ÿ‘ป1
๐Ÿฏ ๐—™๐—ฟ๐—ฒ๐—ฒ ๐—ข๐—ฟ๐—ฎ๐—ฐ๐—น๐—ฒ ๐—–๐—ฒ๐—ฟ๐˜๐—ถ๐—ณ๐—ถ๐—ฐ๐—ฎ๐˜๐—ถ๐—ผ๐—ป๐˜€ ๐˜๐—ผ ๐—™๐˜‚๐˜๐˜‚๐—ฟ๐—ฒ-๐—ฃ๐—ฟ๐—ผ๐—ผ๐—ณ ๐—ฌ๐—ผ๐˜‚๐—ฟ ๐—ง๐—ฒ๐—ฐ๐—ต ๐—–๐—ฎ๐—ฟ๐—ฒ๐—ฒ๐—ฟ ๐—ถ๐—ป ๐Ÿฎ๐Ÿฌ๐Ÿฎ๐Ÿฑ๐Ÿ˜

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