PAI-iTAG FAQ

Q: Is PAI-iTAG free? How is it billed?

• iTAG platform: The iTAG platform itself is free when your own team performs all labeling work manually.

• Object Storage Service (OSS): iTAG depends on Alibaba Cloud OSS. OSS storage and data transfer costs are billed separately according to OSS billing overview.

• AI-assisted labeling: Smart labeling for selected templates (such as image captioning and image-text description) is currently free. If pricing plans change in the future, Alibaba Cloud will notify you in advance.

• Outsourced labeling service: To have Alibaba Cloud's professional team label your data, submit a ticket to the PAI team to request this paid service.

Q: The console shows I don't have iTAG permissions. How do I get authorized?

Add a role in the workspace first, then go to iTAG's member management to grant access. For details, see Assign user roles.

Q: How do I add team members (such as RAM sub-accounts) as labelers?

Log in to the PAI console with the primary account and add the RAM sub-account as a member in Workspace management. Then go to Member management in iTAG, select Add workspace internal account, and add that RAM user as a labeler or administrator. For details, see Assign user roles.

Q: Why can't I find my RAM user when adding workspace internal accounts?

The RAM user must be added as a member of the current PAI workspace first. After that, the user appears in the list. For the steps, see Configure a workspace > Member role configuration.

Q: How do I add team members, users from other organizations, or individuals as labelers?

Follow the steps in Assign roles > Add roles for other Alibaba Cloud accounts to assign the labeler role to team members, users from other organizations, or individuals.

Q: Can labelers download the source data?

iTAG doesn't give labelers direct download access to source data, which keeps your data secure. Access to the underlying data is controlled by the access policy of the storage location (such as OSS). Configure OSS permissions to manage who can access the data.

Q: How do I find the tenant ID when using the iTAG API?

Query it through the iTAG API using ListTenants. For details, see ListTenants.

Q: Content fails to load with a CORS error and images don't display. What should I do?

If resource loading fails during labeling in iTAG, the OSS bucket storing the labeling data likely doesn't have CORS enabled. To enable CORS on OSS:

Go to the details page of a bucket.

1. Log on to the OSS console.

2. In the left-side navigation pane, click Buckets.

3. On the Buckets page, find the OSS bucket that you want to manage and click the bucket name.

1. On the bucket details page, click Data Security, and configure Cross-Origin Resource Sharing (CORS).

2. Click Create Rule. In the Create CORS Rule panel, configure the following parameters.

   OSS CORS parameters

   Parameter	Required	Description
   Sources	Yes	The allowed origin for cross-origin requests. Set to the following value. https://*.console.aliyun.com
   Allowed Methods	Yes	The allowed HTTP methods for cross-origin requests. Set to the following values. GET POST PUT
   Allowed Headers	Yes	The response headers allowed in cross-origin requests. Set to the following value. *
   Exposed Headers	Yes	The response headers that the client application can access. Set to the following values. etag x-oss-request-id
   Cache timeout	No	The cache duration (in seconds) for preflight (OPTIONS) responses for the specified resource.
   Return Vary: Origin	Yes	Select the checkbox next to Return Vary: Origin to include the Vary: Origin header in responses. If your application handles both CORS and non-CORS requests, or if the Origin header can have multiple values, select Return Vary: Origin to prevent incorrect cache behavior.

3. Click OK.

Q: Dataset format parsing fails when creating a labeling task. How do I fix it?

When creating a labeling task on the iTAG page, if you select a registered dataset and see the error Dataset format parsing failed. Select a dataset in the correct format, check the following:

• iTAG only supports datasets in the iTAG labeling format. For instructions on how to create a compatible dataset, see Create a dataset for a labeling job.

• Verify that the existing dataset uses the correct format. For details, see Annotation file formats.

Q: Why is the OSS bucket unavailable or the file path dropdown empty when creating an iTAG dataset?

Check the following:

1. Region consistency: The region of the PAI-iTAG workspace must match the region of the OSS bucket. Switch regions using the region selector in the upper-left corner of the PAI console.

   To check the current PAI-iTAG region:

   Look at the region selector in the top navigation bar of the PAI console (for example, China (Hangzhou)).

   To check the OSS bucket region:

   In the OSS Management console, open the bucket list and check the Region column for each bucket (for example, US (Silicon Valley), Singapore, or China (Beijing)).

2. Path and file requirements: iTAG doesn't support reading directly from the root directory of an OSS bucket. Store data files in a subdirectory and enter the subdirectory name in the OSS file path field. The dataset import also requires an index file (such as a .csv or .manifest file), not a direct path to a folder of raw images or videos.

Q: Does iTAG support using local data directly for labeling, such as mounting a local NAS?

No. iTAG requires all input data to be stored in Alibaba Cloud OSS. Upload local data (including data on NAS) to OSS first, then create a dataset in iTAG that points to the OSS data.