发布于 2016-02-16 00:22:44 | 146 次阅读 | 评论: 0 | 来源: 网友投递
SystemML 机器学习语言
SystemML 是灵活的，可伸缩机器学习 (ML) 语言，使用 Java 编写。机器学习 (ML) 是指无需显式的编程即可让计算机学习的能力。
Apache SystemML 0.9.0-incubating 发布了，SystemML 是灵活的，可伸缩机器学习 (ML) 语言，使用 Java 编写。机器学习 (ML) 是指无需显式的编程即可让计算机学习的能力。
该版本改进内容包括：
*APIs* Improvements to MLContext and to MLPipeline wrappers *Data Ingestion* Data conversion utilities (from RDDs and DataFrames) Data transformations on raw data sets *Optimizations* Extensions to compilation chain, including IPA Improvements to parfor Improved execution of concurrent Spark jobs New rewrites, including eager RDD caching and repartitioning Improvements to buffer pool caching Partitioning-preserving operations On-demand creation of SparkContext Efficient use of RDD checkpointing *Language and Runtime Operators* New matrix multiplication operators (e.g., ZipMM) New multi-threaded readers and operators Extended aggregation-outer operations for different relational operators Sample capability *New Algorithms* Alternating Least Squares (Conjugate Gradient) Cubic Splines (Conjugate Gradient and Direct Solve)