sophryu99/TIL

TIL Repository

today-i-learned

Archives of my learnings (kept track in the Issues tab)

Algorithm & Data Structures

• Graph
• Linked Lists
• Trees, BFS & DFS
• Heapq, Priority Queue
• Dictionary
• Set
• Big-O Analysis
• Sorting algorithms
• Binary Search
• Travelling Salesman problems
• NP-Complete
• Sieve of Eratosthenes

Python code snippets

• Pandas Dataframe basics
• enumerate()
• Binary -> int, Int -> binary
• String to Datetime
• Sorting 2d array by index

Development

• OOP, SOLID Principles
• Aync & Await
• Node.js basics
• Sequelize Orm Operators

Database & SQL

• Adding data from csv to sqlite tables
• FULL JOIN with LEFT JOIN and UNION
• SQL Code snippets
• Database Normalization
• DBMS Joins: Theta, Natural, Equi

Data Science

Statistics

• Data Types: Qualitative vs Quantitative
• Hypothesis Testing
• Confusion matrix

Machine Learning & Deep Learning

• Clustering - KMeans
• Classification - Decision Tree Classifier
• NLP basics
• Recommendation - content-based filtering
• Neural Networks - Basics & Terminologies
• Word2vec - CBOW, Skip-gram