May 29, 2023

How to become a Data Scientist?

Welcome to an exciting journey towards becoming a proficient data scientist! Over the years, I have gained extensive experience in the field and carefully crafted a comprehensive two-year learning plan just for you. In this blog, I will guide you through each phase, providing detailed insights and mentorship along the way. So, let's dive in and unleash your potential as a data scientist!

Year 1: Building a Strong Foundation

The first year of our journey focuses on establishing a solid foundation in data science. We will cover essential topics and acquire fundamental skills that form the backbone of this field.

Month 1-2: Foundations of Data Science

We kickstart the journey by introducing you to the fascinating world of data science and its applications. Additionally, we dive into the Python programming language, which is widely used in the field. Through coding exercises and practical examples, you will gain confidence in your Python skills.

What You'll Learn :

  • Introduction to Data Science and its applications
  • Basics of Python programming
  • Data types, variables, and control flow in Python
  • Introduction to NumPy and Pandas for data manipulation
  • Basic data visualization using Matplotlib

Learning Resources : 

Books: 

Online Courses:

YouTube Channels: 

  • Corey Schafer, 
  • Sentdex

Practice: Complete coding exercises in Python, such as solving simple programming problems and implementing basic data structures.

Month 3-4: Statistics and Exploratory Data Analysis

Understanding statistics is crucial for any data scientist. In these months, we explore descriptive statistics, probability theory, hypothesis testing, and techniques for exploratory data analysis. You will learn how to derive meaningful insights from data and make informed decisions.

What You'll Learn :

  • Introduction to descriptive statistics
  • Probability theory and distributions
  • Statistical inference and hypothesis testing
  • Exploratory data analysis techniques
  • Advanced data visualization using Seaborn

Learning Resources: 

Books: 

Online Courses: 

Websites for Practice:

  • Kaggle, 
  • DataCamp, 
  • Mode Analytics

Practice: Analyze datasets using Python libraries like NumPy and Pandas, perform statistical tests, and visualize data using Matplotlib or Seaborn.

Month 5-6: Data Manipulation and Cleaning

Real-world data is often messy, and as a data scientist, you need to know how to clean and preprocess it. This phase covers data cleaning techniques, handling missing data and outliers, feature engineering, feature selection, and working with time series data. You will become proficient in using powerful Python libraries like Pandas.

What You'll Learn :

  • Data Cleaning and Preprocessing Techniques
  • Handling Missing Data and Outliers
  • Feature Engineering
  • Feature Selection
  • Working with Time Series Data

Learning Resources: 

Books:

Online Courses: 

Websites for Practice: 

  • Kaggle, 
  • DataCamp, 
  • Mode Analytics

Practice: Work with real-world datasets, apply data cleaning techniques, preprocess data for machine learning models, and handle time series data using libraries like Pandas.

Month 7-8: SQL and Relational Databases

SQL is the language of databases, and a data scientist must be comfortable working with relational databases. In this phase, we introduce you to SQL and guide you through basic and advanced querying techniques. You will learn to join tables, use subqueries, and modify databases.

What You'll Learn :

  • Introduction to SQL and Basic Querying
  • Advanced Querying (Joins, Subqueries)
  • Aggregation Functions and Grouping Data
  • Modifying Databases with Insert, Update, and Delete Statements

Learning Resources: 

Books: 

Online Courses: 

Websites for Practice: 

  • SQLZoo, 
  • Mode Analytics, 
  • LeetCode

Practice: Practice SQL queries on sample databases, work with SQLite or MySQL, and solve SQL-related problems on platforms like HackerRank or LeetCode.

Month 9-10 : Machine Learning Fundamentals

Machine learning is at the heart of data science. We delve into supervised learning, covering linear regression, logistic regression, and k-nearest neighbors. Model evaluation, unsupervised learning techniques like clustering and dimensionality reduction, and their practical implementations are also explored.

What You'll Learn :

  • Introduction to Machine Learning and its Types
  • Supervised Learning: Linear Regression
  • Supervised Learning: Logistic Regression
  • Supervised Learning: k-nearest neighbors
  • Model Evaluation and Performance Metrics
  • Unsupervised Learning: Clustering
  • Unsupervised Learning: Dimensionality Reduction

Learning Resources: 

Books: 

Online Courses:


Websites for Practice: 

Practice: Implement machine learning algorithms from scratch using Python, work on small projects to apply regression, classification, and clustering techniques, and evaluate model performance.

Month 11-12 - Practice & Apply for Internship

In these final months of year one, we encourage you to revise and reinforce your knowledge. Engage in Python and SQL beginner to Intermediate-level projects, participate in challenges on platforms like Kaggle, and solidify your understanding of the concepts you've learned so far. We also would like you to recommend to apply for Internships to gain experience in the field.

What You'll do :

  • Practice Python and SQL beginner level projects
  • Participate in beginner level challenges on the sites like Kaggle
  • Make profile on LinkedIn and Build a network
  • Apply for Internships

Year 2: Advanced Topics and Specializations

Congratulations on completing the first year of your journey! Now it's time to expand your expertise and explore advanced topics and specialized areas of data science.

Month 1- 2: Big Data Tools and Technologies

As data sets continue to grow, it is essential to learn how to handle big data. In this phase, we introduce you to Hadoop, MapReduce, Apache Spark, and NoSQL databases. You will also learn advanced SQL querying techniques to tackle complex problems.

What You'll Learn :

  • Introduction to Hadoop and MapReduce
  • Apache Spark for Distributed Computing
  • Working with NoSQL Databases
  • Querying Relational Databases with SQL

Learning Resources: 

Books: 


Online Courses: 

Websites for Practice: 

  • Hortonworks Sandbox, 
  • Databricks Community Edition, 
  • AWS or GCP documentation

Practice: Set up a local Hadoop or Spark cluster for hands-on experience, practice querying NoSQL databases like MongoDB, and perform complex SQL queries on large datasets.

Month 3-4: Advanced Topics in Data Science

Deep dive into exciting domains such as recommender systems, time series analysis, advanced natural language processing (NLP) techniques, and image recognition. You will gain practical skills in building recommendation systems, forecasting time series data, analyzing text sentiment, and exploring computer vision.

What You'll Learn :

  • Recommender Systems
  • Time Series Analysis and Forecasting
  • Advanced NLP Techniques
  • Image Recognition and Computer Vision Basics

Learning Resources: 

Books: 

Online Courses: 

Websites for Practice: 

  • Kaggle,
  • NLTK documentation, 
  • spaCy documentation

Practice: Build recommendation systems using collaborative filtering or matrix factorization techniques, forecast time series data using ARIMA or LSTM models, work on NLP tasks like sentiment analysis or text generation, and explore image recognition using libraries like TensorFlow or PyTorch.

Month 5-6: Model Evaluation and Validation

Building accurate and reliable models is vital. We cover cross-validation, model selection, hyperparameter tuning, handling imbalanced datasets, and understanding the bias-variance tradeoff. These skills will help you develop models that perform well in real-world scenarios.

What You'll Learn :

  • Cross-Validation and Model Selection
  • Hyperparameter Tuning and Optimization
  • Handling Imbalanced Datasets
  • Bias-Variance Tradeoff and Overfitting

Learning Resources: 

Books: 

Online Courses: 

Websites for Practice: 

  • Scikit-learn documentation
  • Kaggle competitions
  • Analytics Vidhya

Practice: Apply cross-validation techniques to assess model performance, optimize hyperparameters using techniques like grid search or random search, handle imbalanced datasets using sampling techniques, and experiment with regularization to address overfitting.

Month 7 - 8: Model Deployment and Productionisation

Once you have developed a successful model, you need to deploy it effectively. This phase covers model deployment techniques, building web applications using frameworks like Flask or Django, and an introduction to cloud platforms like AWS, Azure, and GCP. We also address ethical considerations in data science.

What You'll Learn :

  • Model Deployment Techniques (APIs, containers)
  • Building Web Applications with Flask or Django
  • Introduction to Cloud Platforms (AWS, Azure, GCP)
  • Ethical Considerations in Data Science

Learning Resources: 

Books: 

Online Courses: 

Websites for Practice: 

  • Flask documentation, 
  • Django documentation, 
  • Docker documentation

Practice: Deploy models as RESTful APIs using Flask or Django, containerize models using Docker, explore cloud platforms like AWS, Azure, or GCP for model deployment, and consider ethical implications when working with data and deploying models.

Month 9 - 10  : Deep Dive into Data Science Specializations

It's time to specialize! Choose from domains such as deep learning for computer vision or NLP, reinforcement learning, advanced time series analysis, and advanced recommender systems. You will gain hands-on experience by implementing state-of-the-art techniques using frameworks like TensorFlow or PyTorch.

What You'll Learn :

  • Deep Learning for Computer Vision or NLP
  • Reinforcement Learning
  • Advanced Time Series Analysis and Forecasting
  • Advanced Recommender Systems

Learning Resources: 

Books: 

Online Courses: 

Websites for Practice: 

  • OpenAI Gym, 
  • Kaggle (for specialized datasets), 
  • TensorFlow or PyTorch documentation

Practice: Implement deep learning models for computer vision or NLP tasks using frameworks like TensorFlow or PyTorch, explore reinforcement learning algorithms and apply them to solve simple problems, work on advanced time series analysis techniques like SARIMA or Prophet, and build advanced recommender systems using matrix factorization or deep learning methods.

Month 11 - 12: Capstone Project and Professional Development

In these final months, you will work on a comprehensive data science project that showcases your skills and creativity. Document and present your project findings effectively, polish your resume, prepare for interviews, and explore job search strategies and networking opportunities.

What You'll Learn :

  • Work on a Comprehensive Data Science Project
  • Documenting and Presenting Project Findings
  • Resume Building and Interview Preparation
  • Job Search Strategies and Networking

Learning Resources: 

Books: 

Online Courses: 

Websites for Practice: 

  • Kaggle, 
  • GitHub (for exploring other data science projects), 
  • LinkedIn Learning

Practice: Devote time to a substantial data science project that demonstrates your skills, document and present your findings effectively, polish your resume, practice technical interviews, and network with professionals in the field through online communities, events, or platforms like LinkedIn.

Congratulations on completing this two-year data science learning journey! You have gained a strong foundation, explored advanced topics, and specialized in specific domains. Remember, learning is a continuous process in the ever-evolving field of data science. Keep practicing, stay curious, and embrace the challenges that come your way. You are now equipped with the tools and knowledge to excel as a data scientist. Best of luck in your future endeavors!

Now, go forth and unleash your potential in the exciting world of data science!

We at Alphaa AI are on a mission to tell #1billion #datastories with their unique perspective. We are the community that is creating Citizen Data Scientists, who bring in data first approach to their work, core specialisation, and the organisation.With Saurabh Moody and Preksha Kaparwan you can start your journey as a citizen data scientist.

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