We're working on building a tool to evaluate the efficacy of NSF proposals, broken down by topic. We extracted the topics per grant using this dataset.
One of the criteria for evaluating the impact of a grant could be the aggregating and analyzing publication-level citation-metrics, perhaps using this list of databases.
However, there doesn't seem to be a way to filter papers that were wholly or partly funded by a particular grant. Do you have any suggestions about how this data could be retrieved, or how grant-giving bodies typically analyze this themselves?