IrtRuby is a comprehensive Ruby library for Item Response Theory (IRT) analysis, commonly used in educational assessment, psychological testing, and survey research. Features three core IRT models: • Rasch Model (1PL) - Simple difficulty-only model • Two-Parameter Model (2PL) - Adds item discrimination • Three-Parameter Model (3PL) - Includes guessing parameter Key capabilities: • Robust gradient ascent optimization with adaptive learning rates • Flexible missing data strategies (ignore, treat as incorrect/correct) • Comprehensive performance benchmarking suite • Memory-efficient implementation with excellent scaling • Production-ready with extensive test coverage Perfect for researchers, data scientists, and developers working with educational assessments, psychological measurements, or any binary response data where item and person parameters need to be estimated simultaneously.

Ishin converts objects into their Hash representations.

Type assertion library for method arguments

JSON escape

A calculator that can safely and quickly interpret user-input

Check number whether kiriban

JSON Driven, Stateless Rules Engine for JIT and efficient evaluation of complex rules and computation graphs.

Provides thread-safe lazy initialization with clean, Ruby-idiomatic API. Eliminates race conditions in lazy attribute initialization while maintaining performance.

It's lenjadoric

Use String#levenshtein(other_str) to get the levenshtein distance between 2 strings. Useful for measuring approximate string similarity, and fuzzy matching.

Ruby bindings for libdeflate.

It's logasmic

It's logasmic

ls-trace is LightStep's fork of Datadog’s tracing client for Ruby. It is used to trace requests as they flow across web servers, databases and microservices so that developers have great visiblity into bottlenecks and troublesome requests.

Manager generates a user's manual and a developer's chart simultaneously from a single spec file that contains both kinds of information. More precisely, it is a document generator, source code annotation extracter, source code analyzer, class diagram generator, unit test framework, benchmark measurer for alternative implementations of a feature, all in one.

A general-purpose microlanguage for configurable objects.

Generalized implementation of the middleware abstraction for Ruby.

A mighty struct which wraps objects in order to provide deep method access to its properties.

Helps to learn spanish

A 'personal assistant' supplying utilities and libraries for general Ruby and Bash use.