fix: return empty int ndarray instead of None for class_id on empty VLM parse #1150
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| Job | Run time |
|---|---|
| 20s | |
| 42s | |
| 40s | |
| 49s | |
| 1m 19s | |
| 1m 49s | |
| 1m 36s | |
| 1m 8s | |
| 43s | |
| 1m 1s | |
| 51s | |
| 1m 14s | |
| 1m 35s | |
| 37s | |
| 56s | |
| 1m 10s | |
| 2s | |
| 16m 32s |