English Courses

Mastering SQL Functions and Clauses with PostgreSQL

Master advanced PostgreSQL functions and clauses to enhance data analysis capabilities, from COUNT operations to complex aggregations across multiple tables for improved reporting and insights.

• CodeSignal
• 2 hours
• Self-Paced
• Free Certificate

Advanced Query Techniques and Conditional Logic in PostgreSQL

Master advanced PostgreSQL querying with subqueries, logical operators, and conditional statements to enhance your data analysis and manipulation capabilities.

• CodeSignal
• 1 hour
• Self-Paced
• Free Certificate

Working with DataFrames in PySpark

Master PySpark DataFrames for advanced data manipulation, from creation to complex operations like filtering, joins, and handling missing data - all designed for large-scale dataset management.

• CodeSignal
• 3 hours
• Self-Paced
• Free Certificate

Performing SQL Operations with PySpark

Master SQL operations in PySpark, from basic queries to complex joins and custom functions, enabling efficient data analysis and transformation for large-scale datasets.

• CodeSignal
• 2 hours
• Self-Paced
• Free Certificate

Navigating PySpark MLlib Essentials

Master essential machine learning with PySpark MLlib, from data preparation to model deployment. Learn to train classifiers, make predictions, and evaluate performance using distributed computing.

• CodeSignal
• 2 hours
• Self-Paced
• Free Certificate

Introduction to RAG

Discover the fundamentals of Retrieval-Augmented Generation (RAG), how it reduces hallucinations in AI, and explore basic workflows compared to standard prompting techniques.

• CodeSignal
• 1 hour
• Self-Paced
• Free Certificate

Text Representation Techniques for RAG Systems

Explore essential text representation techniques for RAG systems, from Bag-of-Words to embeddings, and learn how to visualize and compare these methods for effective document retrieval and semantic search.

• CodeSignal
• 1 hour
• Self-Paced
• Free Certificate

Beyond Basic RAG: Improving our Pipeline

Discover advanced RAG techniques including hybrid retrieval, query refinement, context summarization, and constrained generation to improve accuracy and reduce hallucinations.

• CodeSignal
• 1 hour
• Self-Paced
• Free Certificate

Microcredential

APIs Made Easy with Python and Flask

133 ratings at CodeSignal

Master Python API development by building a Flask server, creating dynamic endpoints, handling HTTP methods, implementing data validation with Marshmallow, and securing applications using JWT authentication.

• CodeSignal
• 11 hours
• Self-Paced
• Free Certificate
• 4 courses

Rust Programming for Beginners

Master Rust programming fundamentals through hands-on exercises covering syntax, data types, operators, and control structures while building practical applications for efficient and reliable code development.

• CodeSignal
• 2 hours
• Self-Paced
• Free Certificate

Functions, Scope, and Ownership in Rust

Master Rust's core concepts of functions, scope, and ownership while building practical applications for memory-safe and efficient code development through hands-on exercises and real-world examples.

• CodeSignal
• 2 hours
• Self-Paced
• Free Certificate

Exploring Data Structures in Rust

Master Rust's essential data structures including tuples, arrays, vectors, hash sets, and hash maps while learning ownership rules, indexing operations, and efficient data management techniques.

• CodeSignal
• 2 hours
• Self-Paced
• Free Certificate

String Manipulation in Rust

Master string manipulation techniques in Rust, from basic operations to advanced methods, focusing on ownership, conversions, and efficient text processing for robust applications.

• CodeSignal
• 2 hours
• Self-Paced
• Free Certificate

Mastering Loops and Iterators in Rust

Master Rust's control flow with loops, iterators, and enumerators. Learn to implement while, for, and nested loops effectively while optimizing code performance and readability.

• CodeSignal
• 2 hours
• Self-Paced
• Free Certificate

Object Oriented Features of Rust

Master object-oriented programming in Rust through structs, traits, and methods while building practical applications. Learn encapsulation, polymorphism, and modular design patterns for robust systems development.

• CodeSignal
• 2 hours
• Self-Paced
• Free Certificate