Choosing a Segmentation Implementation Strategy

A development team is refining a reward model by segmenting long user-chatbot interactions. They use a dedicated software library that is specifically trained to parse text and insert break-points at the end of complete sentences and paragraphs. This process divides the long interactions into a series of coherent, smaller chunks. Which method of segmentation is being implemented in this scenario?

Prompting an LLM for Semantic Segmentation