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| <h1>Apache SystemDS<sup id="trademark">™</sup> 0.9.0-incubating Release Notes</h1> |
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| <p>Apache SystemML 0.9.0-incubating is the first release of SystemML since it joined Apache as an incubator project on November 2nd, 2015.</p> |
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| <p>Extensive updates have been made to the project in several areas. These include APIs, data ingestion, optimizations, language and runtime operators, new algorithms, testing, and online documentation.</p> |
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| <h3 id="apis">APIs</h3> |
| <ul> |
| <li>Improvements to MLContext and to MLPipeline wrappers</li> |
| </ul> |
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| <h3 id="data-ingestion">Data Ingestion</h3> |
| <ul> |
| <li>Data conversion utilities (from RDDs and DataFrames)</li> |
| <li>Data transformations on raw data sets</li> |
| </ul> |
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| <h3 id="optimizations">Optimizations</h3> |
| <ul> |
| <li>Extensions to compilation chain, including IPA</li> |
| <li>Improvements to parfor</li> |
| <li>Improved execution of concurrent Spark jobs</li> |
| <li>New rewrites, including eager RDD caching and repartitioning</li> |
| <li>Improvements to buffer pool caching</li> |
| <li>Partitioning-preserving operations</li> |
| <li>On-demand creation of SparkContext</li> |
| <li>Efficient use of RDD checkpointing</li> |
| </ul> |
| |
| <h3 id="language-and-runtime-operators">Language and Runtime Operators</h3> |
| <ul> |
| <li>New matrix multiplication operators (e.g., ZipMM)</li> |
| <li>New multi-threaded readers and operators</li> |
| <li>Extended aggregation-outer operations for different relational operators</li> |
| <li>Sample capability</li> |
| </ul> |
| |
| <h3 id="new-algorithms">New Algorithms</h3> |
| <ul> |
| <li>Alternating Least Squares (Conjugate Gradient)</li> |
| <li>Cubic Splines (Conjugate Gradient and Direct Solve)</li> |
| </ul> |
| |
| <h3 id="testing">Testing</h3> |
| <ul> |
| <li>PyDML algorithm tests</li> |
| <li>Test suite refactoring</li> |
| <li>Improvements to performance tests</li> |
| </ul> |
| |
| <h3 id="online-documentation">Online Documentation</h3> |
| <ul> |
| <li>GitHub README</li> |
| <li>Quick Start Guide</li> |
| <li>DML and PyDML Programming Guide</li> |
| <li>MLContext Programming Guide</li> |
| <li>Algorithms Reference</li> |
| <li>DML Language Reference</li> |
| <li>Debugger Guide</li> |
| </ul> |
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