group-lasso

Experiments with coordinate descent in Sparse Group Lasso model

DecliningOpen SourceLow lock-in

Pricing

Free tier

Flat rate

Adoption

Cooling

License

Open Source

Data freshness

Aging · Jun 8, 2026

Overview

What is group-lasso?

The group-lasso package provides experiments and implementations of the coordinate descent algorithm used in the Sparse Group Lasso model, useful for regression tasks where feature groups are known.

Key differentiator

group-lasso offers a specialized implementation of the Sparse Group Lasso model, focusing on coordinate descent algorithms for regression tasks with grouped features.

Capability profile

Capability Radar

Ease of StartEcosystemValueMaturityFlexibilityScale Ready

Honest assessment

Strengths & Weaknesses

↑ Strengths

Implementation of coordinate descent for Sparse Group Lassomedium

Supports both sparse and dense data formatsmedium

Optimized for regression tasks with known feature groupsmedium

↓ Weaknesses

Steep learning curve for non-Python developershigh

API requires Python-specific patterns, TypeScript SDK is community-maintained

Frequent breaking changes between versionsmedium

v0.1 to v0.2 migration required rewriting chain definitions

Limited documentation and examples for complex use caseshigh

Official documentation lacks detailed explanations of advanced features and usage scenarios

Performance issues with very large datasetsmedium

Coordinate descent algorithm can be slow when processing high-dimensional data, leading to increased computational time

Fit analysis

Who is it for?

✓ Best for

Researchers working with regression models who need to apply regularization at the group level

Data scientists dealing with datasets where features are naturally grouped into meaningful categories

✕ Not a fit for

Projects requiring real-time processing or very large datasets due to computational constraints

Applications that do not benefit from group-level regularization techniques

Cost structure

Pricing

Free Tier

Available

Open source — free to use

Starts at

$0

Model

Flat rate

Enterprise

None

Performance benchmarks

How Fast Is It?

Ecosystem

Relationships

Next step

Get Started with group-lasso

Step-by-step setup guide with code examples and common gotchas.

View Setup Guide →