Per-second retention-causal chain-of-thought traces generated from TTCC ads
using Gemini 3.5 Flash via Vertex AI. Each row pairs a TikTok Creative Center
ad with a structured trace identifying the visual, audio, and impact factors
that drive viewer retention or drop-off second-by-second.
ad_id : str — TTCC ad identifier
cot : str —
<cot> ...
</cot> trace… See the full description on the dataset page:
https://huggingface.co/datasets/liangyuch/ttcc-cot.