| --- |
| title: Welcome to PredictionIO! |
| description: PredictionIO Open Source Machine Learning Server |
| --- |
| |
| ## What is PredictionIO? |
| |
| PredictionIO is an **open source Machine Learning Server** built on top of state-of-the-art open source stack for developers and data scientists create predictive engines for any machine learning task. It lets you: |
| |
| * quickly build and deploy an engine as a web service on production with [customizable templates](http://templates.prediction.io); |
| * respond to dynamic queries in **real-time** once deployed as a web service; |
| * evaluate and tune multiple engine variants systematically; |
| * unify data from multiple platforms in batch or in real-time for comprehensive predictive analytics; |
| * speed up machine learning modeling with systematic processes and pre-built evaluation measures; |
| * support machine learning and data processing libraries such as Spark MLLib and OpenNLP; |
| * implement your own machine learning models and seamlessly incorporate them into your engine; |
| * simplify data infrastructure management. |
| |
| PredictionIO can be [installed](https://docs.prediction.io/install/) as a full machine learning stack, bundled with **Apache Spark**, **MLlib**, **HBase**, **Spray** and **Elasticsearch**, which simplifies and accelerates scalable machine learning infrastructure management. |
| |
| | Getting Started | Developer Guides | ML Education and Usage | PredictionIO SDKs | |
| | --------------- | ---------------- | ---------------------- | ----------------- | |
| | [Quick Intro](/start/) | [System Architecture](/system/) | [Comics Recommendation](/demo/tapster/) | [Java](/sdk/java/) | |
| | [Installation Guide](/install/) | [Event Server Overview](/datacollection/) | [Text Classification](/demo/textclassification/) | [PHP](/sdk/php/) | |
| | [Downloading Template](/start/download/) | [Collecting Data](/datacollection/eventapi/) | [Community Contributed Demo](/demo/community/) | [Python](/sdk/python/) | |
| | [Deploying an Engine](/start/deploy/) | [Learning DASE](/customize/) |[Dimensionality Reduction](/machinelearning/dimensionalityreduction/)| [Ruby](/sdk/ruby/) | |
| | [Customizing an Engine](/start/customize/) | [Implementing DASE](/customize/dase/) ||[Community Contributed](/sdk/community/) | |
| | [App Integration Overview](/appintegration/) | [Evaluation Overview](/evaluation/) ||| |
| || [Intellij IDEA Guide](/resources/intellij/) ||| |
| || [Scala API](/api/current/#package) ||| |
| |
| |
| ## Release Notes |
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| A summary of the changes in each release in the current series can now be found on the separate [Release Notes](/release-notes) page |
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| ## Licensing |
| |
| PredictionIO is licensed under the Apache License, Version 2.0. See [LICENSE](https://github.com/PredictionIO/PredictionIO/blob/master/LICENSE.txt) for the full license text. |
| |
| ### Documentation |
| |
| Documentation is under a [Creative Commons Attribution-NonCommercial-ShareAlike 3.0 License](http://creativecommons.org/licenses/by-nc-sa/3.0/). |