| commit | f6cdfce98d2d2f677426dbc525d396fb6d6c2eaa | [log] [tgz] |
|---|---|---|
| author | baunsgaard <baunsgaard@tugraz.at> | Mon Nov 02 15:21:20 2020 +0100 |
| committer | baunsgaard <baunsgaard@tugraz.at> | Mon Nov 02 15:21:38 2020 +0100 |
| tree | ff02aabb830fe19f8dc02fb3f022a1ba7d2e67f1 | |
| parent | b492ac4fc18092f0f591a83a50a3d7e0b46fb1b1 [diff] |
[SYSTEMDS-2712] Inferring CSV mdt bug fix When reading CSV files and directly writing them to another file. The metadata it saves with indicate -1 cols and -1 rows. This is because it while reading the CSV does not know how big it is in default arguments. This commit fixes this, when the first read from disk is called, the metadata is changed on the matrix object after the read, to reflect the correct number of cols, rows and nnz.
Overview: SystemDS is a versatile system for the end-to-end data science lifecycle from data integration, cleaning, and feature engineering, over efficient, local and distributed ML model training, to deployment and serving. To this end, we aim to provide a stack of declarative languages with R-like syntax for (1) the different tasks of the data-science lifecycle, and (2) users with different expertise. These high-level scripts are compiled into hybrid execution plans of local, in-memory CPU and GPU operations, as well as distributed operations on Apache Spark. In contrast to existing systems - that either provide homogeneous tensors or 2D Datasets - and in order to serve the entire data science lifecycle, the underlying data model are DataTensors, i.e., tensors (multi-dimensional arrays) whose first dimension may have a heterogeneous and nested schema.
Quick Start Install, Quick Start and Hello World
Documentation: SystemDS Documentation
Python Documentation Python SystemDS Documentation
Issue Tracker Jira Dashboard
Status and Build: SystemDS is renamed from SystemML which is an Apache Top Level Project. To build from source visit SystemDS Install from source
