Comments (2)
Good questions!
- The
num_frames
in the configs are actually placeholders, and I changed them to4
in theipynb
. Since UMT uses sic-cos position embedding and is pretrained with 4 frames, I set it to 4 for better position interpolation. - In the instruction tuning, we use 8 frames, but we find 16 frames are better for different tasks. We do not use 16 frames considering the efficiency and effectiveness.
- You can find the data details in data.py. We use only
WebVid10M
andCC3M
in the stage2 of Mistral, since we find that more data is even harmful, leading to about 1~2% accuracy drop in MVBench.
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Thank you for the quick response! This is really helpful!
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