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[[http://incubator.apache.org/hama|Hama]] (means a hippopotamus in Korean) is a distributed scientific package on Hadoop for massive matrix and graph data. It is currently in incubation with Apache. The main goal of Hama is to provide computational tools for data-intensive scientific and industrial areas. It consists of two packages, which are the matrix package and the graph package.

The matrix package (means a hippopotamus in Korean) is a library of matrix operations on a Map/Reduce framework for a large-scale numerical analysis and data mining, that need the intensive computation power of matrix inversion, e.g., linear regression, PCA, SVM and etc. It will be useful for many scientific applications, e.g., physics computations, linear algebra, computational fluid dynamics, statistics, graphic rendering and many more.

[[GraphPackage| The graph package]], is an large-scale graph data management framework for analytical processing. It is still an ongoing project. It will employ massive parallelism on Hadoop. It aims to achieve the scalability for tera bytes or peta bytes graph data. Angrapa will be used in a variety of scientific and industrial areas, such as data mining, machine learning, information retrieval, bioinformatics, and social networks, required to process large-scale graph data.

 * Scientific simulation and modeling 
  * Matrix-vector/[[MatrixMultiply|matrix-matrix multiply]]
  * Soving linear systems
  * [[GraphPackage| Scientific graphs]]
  * Scientific Business Intelligence
 * Information retrieval 
  * Sorting 
  * Finding [[EigenValuesAndEigenVectors| eigenvalues and eigenvectors]]
 * Computer graphics and computational geometry 
  * Matrix multiply 
  * Computing matrix determinate 

== General Information ==

 * [[http://incubator.apache.org/hama|Hama Homepage]] 
 * Hama [[Architecture]] and Plans -- Work in progress
 * [[Presentations]] and [[Articles]] about Hama
 * [[GettingStarted| Getting Started with Hama]]
 * [[MailingLists| Hama Mailing Lists]]
 * [[IRC| Hama IRC Channel]]
 * Hama [[PerformanceEvaluation| Performance Evaluation]]
 * [[PoweredBy]], a list of sites and applications powered by Hama
== User Documentation ==

 * Examples
  * [[MatMult| Matrix Multiplication]]
  * [[CosineSimilarity| Cosine Similarity Matrix]]
  * [[BFS| Breadth-First Search]] using Hama
== Developer Documentation ==

 * [[HowToContribute| How to contribute]]
 * [[Jira]] usage guidelines
 * [[BecomingDeveloper| Becoming a developer]]
 * [[HowToCommit| How to commit]]