oneDAL is a C++ and DPC++ library for accelerated machine learning routines on tabular data, governed by the UXL Foundation.
Open source
24 alternatives19 Questions
19 Questions assigns attributes to objects using machine learning and Bayesian inference, according to its project description.
About 19 Questions
19 Questions is an open-source project that implements a machine learning and Bayesian inference engine for assigning attributes to objects. It is presented as a guessing game in which the program asks questions to determine which object the player is thinking of. The computer wins if it guesses the object within 19 questions.
Players answer questions in a web browser, and the system compares those answers to responses from past players. It uses statistical inference to estimate the likelihood of each known object and selects the next question to reduce uncertainty, using entropy calculations. A demo is available at apps.phor.net/19q/, and the code can be self-hosted using PHP with a SQL database created from the included schema.
The repository includes installation steps, source files, and technical documentation in TECHNICAL.md. It suits developers, students, and others interested in machine learning, data science, and Bayesian methods who want to study or run a question-based inference system.
Key features
- Guessing game that asks up to 19 questions
- Uses past player answers to estimate likely object
- Chooses questions to reduce uncertainty using entropy
- Self-host with PHP and SQL database
- Playable demo in a web browser
- Technical documentation in TECHNICAL.md file
Best for: Developers and students interested in Bayesian inference and question-based learning systems.
Good for
- Open source under MIT license
- Includes working demo and install instructions
- Documents inference method in detail
Watch out for
- Requires PHP server and SQL database setup
- Needs manual data entry to get started
19 Questions at a glance
- Category
- AI & Machine Learning › AI Data & Analytics
- Type
- Open-source project
- Pricing
- Not confirmed. Check the site
- Open source
- Yes · Source code
- Language
- English
- Last checked
- Oct 5, 2026 · Online when checked
- Listed
- Oct 5, 2026
19 Questions alternatives
Tools and sites you could use instead, ranked by how closely they match.
DVC tracks data versions and machine learning experiments for collaborative development.
Open source
24 alternatives
Cleanlab provides a Python library for data quality and machine learning with messy real world data and labels.
Open source
24 alternatives
Feature Engine provides Python tools for feature engineering and selection that are compatible with scikit-learn.
Open source
24 alternatives
mljar-supervised provides tabular data AutoML with feature engineering, hyperparameter tuning, explanations, and documentation.
Open source
24 alternatives
The Featuretools Python library supports automated feature engineering and is published as open source.
Open source
24 alternativesPopular in AI Data & Analytics
Well-known listings from the same topic.
Dotgetdot.aiForvioforvio.comFluidAI Medicalfluidai.mdApache Zeppelinzeppelin.apache.orgSola Securitysola.securityQuadraticquadratichq.com
19 Questions FAQ
What is 19 Questions?
It is an open-source machine learning game that tries to guess the object you are thinking of within 19 questions.
How does 19 Questions work?
It compares your answers to past player responses and uses statistical inference and entropy to choose the next question.
How do I install 19 Questions?
Create a SQL database from SCHEMA.sql, set database details in sources/config.php, copy the files to a server, and add initial data.
Is 19 Questions open source?
Yes, the code is published on GitHub under the MIT license.
Is something wrong or out of date?
Tell us and an editor will check it.
Own this website?
Claim this listing
Claim the listing and suggest updates yourself. An editor checks every claim first.