Retrieval Augmented Generation for Historical Newspapers
The Trung Tran, Carlos-Emiliano González-Gallardo, Antoine Doucet · 2024
Nowadays, the accessibility and long-term preservation of historical records are significantly impacted by the sharp increase in the digitization of these archives. This shift creates new opportunities for researchers and students in multiple disciplines to broaden their knowledge or conduct multidisciplinary research. However, given the vast amount of data that needs to be analyzed, using this knowledge is not easy. Different natural language processing tasks such as named entity recognition, entity linking, and article separation have been developed to make this accessibility easier for the public by extracting information and structuring data. However, historical newspaper article aggregation is still unexplored. In this work, we demonstrate the potential of the retrieval-augmented generation framework that integrates large language models (LLMs), a semantic retrieval module, and knowledge bases to create a system capable of aggregating historical newspaper articles. In addition, we propose a set of metrics that permit evaluating these generative systems without requiring any ground truth. The results of our proposed RAG pipeline are promising at this early stage of the system. They show that semantic retrieval with the help of reranking and additional information (NER) reduces the impact of OCR errors and query misspellings.