Facebook Pixel
Searching...
English
EnglishEnglish
EspañolSpanish
简体中文Chinese
FrançaisFrench
DeutschGerman
日本語Japanese
PortuguêsPortuguese
ItalianoItalian
한국어Korean
РусскийRussian
NederlandsDutch
العربيةArabic
PolskiPolish
हिन्दीHindi
Tiếng ViệtVietnamese
SvenskaSwedish
ΕλληνικάGreek
TürkçeTurkish
ไทยThai
ČeštinaCzech
RomânăRomanian
MagyarHungarian
УкраїнськаUkrainian
Bahasa IndonesiaIndonesian
DanskDanish
SuomiFinnish
БългарскиBulgarian
עבריתHebrew
NorskNorwegian
HrvatskiCroatian
CatalàCatalan
SlovenčinaSlovak
LietuviųLithuanian
SlovenščinaSlovenian
СрпскиSerbian
EestiEstonian
LatviešuLatvian
فارسیPersian
മലയാളംMalayalam
தமிழ்Tamil
اردوUrdu
Data Science from Scratch

Data Science from Scratch

First Principles with Python
by Joel Grus 2019 403 pages
3.91
1k+ ratings
Listen

Key Takeaways

1. Master the fundamentals of Python for data science

Python has several features that make it well suited for learning (and doing) data science.

Python essentials. Python's simplicity and extensive library ecosystem make it an ideal language for data science. Key concepts include data structures (lists, dictionaries, sets), control flow (if statements, loops), and functions. The language's readability and ease of use allow data scientists to focus on problem-solving rather than complex syntax.

Data manipulation libraries. Familiarize yourself with essential libraries such as NumPy for numerical computing and pandas for data manipulation. These tools provide efficient data structures and operations for working with large datasets. Learn to:

  • Load and save data in various formats
  • Clean and preprocess data
  • Perform basic statistical operations
  • Reshape and merge datasets

Visualization tools. Master data visualization libraries like Matplotlib and Seaborn to create informative and visually appealing plots. Understand how to:

  • Create basic plots (line, scatter, bar)
  • Customize plot aesthetics
  • Create subplots and multi-panel figures
  • Visualize high-dimensional data

2. Understand and apply core statistical concepts

Statistics is important. (Or maybe statistics are important?)

Descriptive statistics. Learn to summarize and describe data using measures of central tendency (mean, median, mode) and dispersion (variance, standard deviation). Understand the importance of data distribution and how to visualize it using histograms and box plots.

Inferential statistics. Master key concepts in statistical inference:

  • Probability distributions (normal, binomial, Poisson)
  • Hypothesis testing and p-values
  • Confidence intervals
  • Regression analysis

Statistical pitfalls. Be aware of common statistical errors and misinterpretations:

  • Correlation vs. causation
  • Simpson's paradox
  • Survivorship bias
  • Multiple comparisons problem

3. Leverage linear algebra for data manipulation and analysis

Linear algebra is the branch of mathematics that deals with vector spaces.

Vector and matrix operations. Understand fundamental linear algebra concepts and their applications in data science:

  • Vector addition and scalar multiplication
  • Matrix multiplication and transposition
  • Eigenvectors and eigenvalues
  • Singular value decomposition (SVD)

Applications in data science. Apply linear algebra techniques to solve various data science problems:

  • Dimensionality reduction (e.g., Principal Component Analysis)
  • Feature extraction and transformation
  • Solving systems of linear equations
  • Implementing machine learning algorithms (e.g., linear regression, neural networks)

4. Implement machine learning algorithms from scratch

Machine learning is really hot right now, and in this chapter we barely scratched its surface.

Supervised learning. Understand and implement fundamental supervised learning algorithms:

  • Linear regression
  • Logistic regression
  • Decision trees
  • K-nearest neighbors
  • Support Vector Machines (SVM)

Unsupervised learning. Explore unsupervised learning techniques for discovering patterns in data:

  • K-means clustering
  • Hierarchical clustering
  • Principal Component Analysis (PCA)
  • Gaussian Mixture Models

Model evaluation. Learn techniques for assessing and improving model performance:

  • Cross-validation
  • Regularization
  • Feature selection and engineering
  • Hyperparameter tuning

5. Explore advanced techniques in neural networks and deep learning

Deep learning originally referred to the application of "deep" neural networks (that is, networks with more than one hidden layer), although in practice the term now encompasses a wide variety of neural architectures.

Neural network fundamentals. Understand the basic building blocks of neural networks:

  • Neurons and activation functions
  • Feedforward and backpropagation
  • Gradient descent and optimization algorithms

Deep learning architectures. Explore various deep learning models and their applications:

  • Convolutional Neural Networks (CNNs) for image processing
  • Recurrent Neural Networks (RNNs) for sequence data
  • Long Short-Term Memory (LSTM) networks
  • Generative Adversarial Networks (GANs)

Deep learning frameworks. Familiarize yourself with popular deep learning libraries:

  • TensorFlow
  • PyTorch
  • Keras

6. Utilize natural language processing for text analysis

Natural language processing (NLP) refers to computational techniques involving language.

Text preprocessing. Learn essential techniques for preparing text data:

  • Tokenization
  • Stemming and lemmatization
  • Stop word removal
  • Part-of-speech tagging

Feature extraction. Understand methods for converting text into numerical features:

  • Bag-of-words representation
  • TF-IDF (Term Frequency-Inverse Document Frequency)
  • Word embeddings (e.g., Word2Vec, GloVe)

NLP applications. Explore common NLP tasks and techniques:

  • Sentiment analysis
  • Named Entity Recognition (NER)
  • Topic modeling
  • Machine translation
  • Question answering systems

7. Apply data science techniques to real-world problems

Throughout the book, we'll be investigating different families of models that we can learn from data.

Problem formulation. Learn to translate business problems into data science tasks:

  • Identify key stakeholders and their needs
  • Define clear objectives and success metrics
  • Determine appropriate data sources and collection methods

Data pipeline development. Build robust data pipelines for real-world applications:

  • Data ingestion and storage
  • Data cleaning and preprocessing
  • Feature engineering and selection
  • Model training and evaluation
  • Deployment and monitoring

Ethical considerations. Understand the ethical implications of data science:

  • Data privacy and security
  • Bias and fairness in machine learning models
  • Transparency and interpretability of algorithms
  • Responsible AI development and deployment

Last updated:

Review Summary

3.91 out of 5
Average of 1k+ ratings from Goodreads and Amazon.

Data Science from Scratch receives mixed reviews. Many praise its practical approach and hands-on examples for beginners, appreciating the author's clear explanations and engaging writing style. The book's focus on building algorithms from scratch is seen as beneficial for understanding fundamentals. However, some critics find it too basic for experienced practitioners or lacking in-depth explanations. Readers appreciate the wide range of topics covered but note that the code examples may not be practical for real-world applications. Overall, it's recommended for those new to data science seeking a practical introduction.

Your rating:

About the Author

Joel Grus is a data scientist and software engineer known for his work in machine learning and data analysis. He gained recognition for authoring "Data Science from Scratch," which has become a popular resource for those entering the field. Grus has a background in mathematics and computer science, and has worked for companies like Google and Microsoft. He is known for his clear, practical approach to teaching complex concepts and his ability to make data science accessible to beginners. Grus is also active in the data science community, regularly contributing to discussions and sharing his expertise through various platforms.

Download PDF

To save this Data Science from Scratch summary for later, download the free PDF. You can print it out, or read offline at your convenience.
Download PDF
File size: 0.69 MB     Pages: 10

Download EPUB

To read this Data Science from Scratch summary on your e-reader device or app, download the free EPUB. The .epub digital book format is ideal for reading ebooks on phones, tablets, and e-readers.
Download EPUB
File size: 3.35 MB     Pages: 6
0:00
-0:00
1x
Dan
Andrew
Michelle
Lauren
Select Speed
1.0×
+
200 words per minute
Create a free account to unlock:
Bookmarks – save your favorite books
History – revisit books later
Ratings – rate books & see your ratings
Unlock unlimited listening
Your first week's on us!
Today: Get Instant Access
Listen to full summaries of 73,530 books. That's 12,000+ hours of audio!
Day 4: Trial Reminder
We'll send you a notification that your trial is ending soon.
Day 7: Your subscription begins
You'll be charged on Dec 1,
cancel anytime before.
Compare Features Free Pro
Read full text summaries
Summaries are free to read for everyone
Listen to summaries
12,000+ hours of audio
Unlimited Bookmarks
Free users are limited to 10
Unlimited History
Free users are limited to 10
What our users say
30,000+ readers
“...I can 10x the number of books I can read...”
“...exceptionally accurate, engaging, and beautifully presented...”
“...better than any amazon review when I'm making a book-buying decision...”
Save 62%
Yearly
$119.88 $44.99/yr
$3.75/mo
Monthly
$9.99/mo
Try Free & Unlock
7 days free, then $44.99/year. Cancel anytime.
Settings
Appearance