Bird‑flocking method reduces AI summary errors ^{CEFR A2}

Researchers at New York University developed a new preprocessing method for large language models (LLMs). The method cleans and simplifies long documents before an LLM makes a final summary.

It keeps important words, merges multi-word terms, and converts each sentence into a numerical vector that captures meaning and topic. Sentences get scores for centrality, section importance, and alignment with the abstract. Then bird‑flocking rules group similar sentences and pick leaders. The chosen sentences are reordered and given to the LLM to write a fluent summary with less repetition and fewer factual errors. The team says the method aims to reduce hallucinations and keep summaries closer to the source.