| --- |
| title: Welcome to Apache PredictionIO®! |
| description: Apache PredictionIO® Open Source Machine Learning Server |
| --- |
| |
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| |
| ## What is Apache PredictionIO®? |
| |
| Apache PredictionIO® is an **open source Machine Learning Server** |
| built on top of a state-of-the-art open source stack for developers and data |
| scientists to 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](/gallery/template-gallery); |
| * 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. |
| |
| Apache PredictionIO® can be [installed](/install/) as a full machine |
| learning stack, bundled with **Apache Spark**, **MLlib**, **HBase**, **Akka HTTP** |
| and **Elasticsearch**, which simplifies and accelerates scalable machine |
| learning infrastructure management. |
| |
| | Getting Started | Developer Guides | Machine Learning Education and Usage | PredictionIO SDKs | |
| | --------------- | ---------------- | ------------------------------------ | ----------------- | |
| | [Quick Intro](/start/) | [System Architecture](/system/) | [Demo: Recommending Comics](/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](/community/projects.html#demos) | [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](/community/projects.html#sdks) | |
| | [App Integration Overview](/appintegration/) | [Evaluation Overview](/evaluation/) ||| |
| || [Intellij IDEA Guide](/resources/intellij/) ||| |
| || [Scala API](/api/current/#package) ||| |
| |
| |
| ## Release Notes |
| |
| A summary of changes in each release can be found |
| [here](https://github.com/apache/predictionio/blob/livedoc/RELEASE.md). |
| |
| ## Licensing |
| |
| Apache PredictionIO® is licensed under the Apache License, Version |
| 2.0. See |
| [LICENSE](https://github.com/apache/predictionio/blob/master/LICENSE.txt) |
| for the full license text. |
