hkb

historical knowledge base · primary sources to 1920

595 works · 97,857 passages · 53,367,694 words · 283 primary sources

Search runs BM25 and dense-vector retrieval in parallel, fuses them with reciprocal rank fusion, then re-ranks by author importance and source type.

What did the Romans say about Christians arguments for religious toleration eyewitness accounts of battle the causes of the fall of Rome what did travellers report about China justifications for revolution

Or put one question to hundreds of sources at once: ask retrieves ~250 passages, clusters them by period, and has a strong model group the sources by the answer they give.