php-ml/docs/machine-learning/datasets/files-dataset.md
2017-01-05 20:37:48 +00:00

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# FilesDataset
Helper class that loads dataset from files. Use folder names as targets. It extends the `ArrayDataset`.
### Constructors Parameters
* $rootPath - (string) path to root folder that contains files dataset
```
use Phpml\Dataset\FilesDataset;
$dataset = new FilesDataset('path/to/data');
```
See [ArrayDataset](array-dataset.md) for more information.
### Example
Files structure:
```
data
business
001.txt
002.txt
...
entertainment
001.txt
002.txt
...
politics
001.txt
002.txt
...
sport
001.txt
002.txt
...
tech
001.txt
002.txt
...
```
Load files data with `FilesDataset`:
```
use Phpml\Dataset\FilesDataset;
$dataset = new FilesDataset('path/to/data');
$dataset->getSamples()[0][0] // content from file path/to/data/business/001.txt
$dataset->getTargets()[0] // business
$dataset->getSamples()[40][0] // content from file path/to/data/tech/001.txt
$dataset->getTargets()[0] // tech
```