ProximityForest

A proximity forest is a data structure that allows for efficient computation of approximate nearest neighbors of arbitrary data elements in a metric space.

See: O'Hara and Draper, "Are You Using the Right Approximate Nearest Neighbor Algorithm?", WACV 2013 (best student paper award).

One application of a ProximityForest is given in the following CVPR publication:
Stephen O'Hara and Bruce A. Draper, "Scalable Action Recognition with a Subspace Forest," IEEE Conference on Computer Vision and Pattern Recognition, 2012.

This source code is provided without warranty and is available under the GPL license. More commercially-friendly licenses may be available. Please contact Stephen O'Hara for license options.

Please view the wiki on this site for installation instructions and examples on reproducing the results of the papers.

Features

Approximate Nearest Neighbors of General Metric Spaces
Simple Python code base
Includes Code to Reproduce CVPR 2012 Publication's Results
Includes action recognition examples using a Subspace Forest
Includes Code to Reproduce WACV 2013 Publication's Results

Project Samples

Proximity Forest Nearest Neighbors on 2D Points

Using a Proximity Forest to Cluster KTH Actions

Using a Proximity Forest to Cluster Cambridge Gestures

Project Activity

See All Activity >

License

GNU General Public License version 3.0 (GPLv3)

Follow ProximityForest

ProximityForest Web Site

Other Useful Business Software

Veeam Data Platform v13.1

Move workloads across hypervisors and clouds with no vendor lock-in. Try VDP free today.

Try Veeam Data Platform today. Experience the unified platform that's secure by design, portable by default, and proven to recover clean, fast, and anywhere.

Try Now

Rate This Project

User Reviews

Be the first to post a review of ProximityForest!

Additional Project Details

Intended Audience

Developers, Science/Research

Programming Language

Python

Related Categories

Python Algorithms, Python Libraries, Python Machine Learning Software, Python Computer Vision Libraries

Registered

2012-05-31

Similar Business Software

Highcharts

Highcharts is a JavaScript charting library that allows developers to create interactive and visually appealing charts for web applications. It offers a wide range of chart types, including line charts, bar charts, pie charts, scatter plots, and more. It also supports different types of data,...

See Software
Process Street

Process Street is an AI-powered compliance operations platform that automates complex workflows, enforces standards, and tracks audit data in real time. Teams use it to create structured SOPs, assign tasks, collect data, and monitor execution with intelligent oversight. From onboarding and...

See Software
Grafana Cloud

Grafana Labs delivers the leading AI-powered observability platform, built around Grafana—the world’s most widely adopted open source technology for dashboards and visualization. Recognized as a Leader in the 2026 Gartner® Magic Quadrant™ for Observability Platforms (3x) and furthest in...

See Software
Google Cloud BigQuery

BigQuery is a serverless, multicloud data warehouse that simplifies the process of working with all types of data so you can focus on getting valuable business insights quickly. At the core of Google’s data cloud, BigQuery allows you to simplify data integration, cost effectively and securely...

See Software
Odoo

Odoo is a fully integrated, customizable, open-source software packed with hundreds of expertly designed business applications. Odoo’s intuitive database is able to meet a majority of business needs, such as: CRM, Sales, Project, Manufacturing, Inventory, and Accounting, just to name a few. Odoo...

See Software
Google Cloud Platform

Google Cloud is a cloud-based service that allows you to create anything from simple websites to complex applications for businesses of all sizes. New customers get $300 in free credits to run, test, and deploy workloads. All customers can use 25+ products for free, up to monthly usage...

See Software