ModelArts supports the following types of datasets:

Images: in .jpg, .png, .jpeg, or .bmp format for image classification, image segmentation, and object detection
Audio: in .wav format for sound classification, speech labeling, and speech paragraph labeling
Text: in .txt or .csv format for text classification, named entity recognition, and text triplet labeling
Video: in .mp4 format for video labeling
Free format: allows data in any format. Labeling is not available for free format data. The free format applies if labeling is not required or needs to be customized. Select this format if your data is in multiple formats or your data is not in any of the preceding formats.

Different types of datasets support different functions, such as auto labeling and team labeling. For details, see Table 1.

**Table 1** Functions supported by different types of datasets
Dataset Type	Labeling Type	Creating a Dataset	Importing Data	Exporting Data	Publishing a Dataset	Modifying a Dataset	Managing Dataset Versions	Auto Grouping	Data Features
Image	Image classification	Supported	Supported	Supported	Supported	Supported	Supported	Supported	Supported
	Object detection	Supported	Supported	Supported	Supported	Supported	Supported	Supported	Supported
	Image segmentation	Supported	Supported	Supported	Supported	Supported	Supported	Supported	N/A
Audio	Sound classification	Supported	Supported	N/A	Supported	Supported	Supported	N/A	N/A
	Speech labeling	Supported	Supported	N/A	Supported	Supported	Supported	N/A	N/A
	Speech paragraph labeling	Supported	Supported	N/A	Supported	Supported	Supported	N/A	N/A
Text	Text classification	Supported	Supported	N/A	Supported	Supported	Supported	N/A	N/A
	Named entity recognition	Supported	Supported	N/A	Supported	Supported	Supported	N/A	N/A
	Text triplet	Supported	Supported	N/A	Supported	Supported	Supported	N/A	N/A
Video	Video labeling	Supported	Supported	N/A	Supported	Supported	Supported	N/A	N/A
Free format	Free format	Supported	N/A	_	Supported	Supported	Supported	N/A	N/A
Table	Table	Supported	Supported	N/A	Supported	Supported	Supported	N/A	N/A

The maximum numbers of samples and labels in a single text, video, or audio database other than a table dataset are 1,000,000 and 10,000, respectively.
The maximum size of a sample in a single text, video, or audio database other than an image dataset is 5 GB.
The maximum size of an image for object detection, image segmentation, or image classification is 25 MB.
The maximum size of a manifest file is 5 GB.
The maximum size of a text file in a line is 100 KB.
The maximum size of a labeling result file is 100 MB.

Dataset Overview