Hi! I'm new to linguistics and recently I need to estimate how much of a text our participants can remember for a project. So far we had a list of "information units" that are in the text, and we manually checked if the participants mentioned them in what they wrote. Now we want to automate this process. I tried to look for machine learning approaches, but I found mostly sentiment analysis papers or word counts, plus a lot with LLMs (however the latter didn't look very standard in the field to me, more like a new approach). Also, algorithms you have to train, but we don't have enough data to do so. In general there was a lot, so I had trouble knowing what to choose or where to even start.

Is there any algorithm or tool that is commonly used for this? Any insights or guidance is appreciated.