Evaluation of Spoken Document Retrieval for Historic Speech Collections Willemijn Heeren author Franciska de Jong author Laurens van der Werff author Marijn Huijbregts author Roeland Ordelman author 2008-05 text Proceedings of the Sixth International Conference on Language Resources and Evaluation (LREC’08) Nicoletta Calzolari editor Khalid Choukri editor Bente Maegaard editor Joseph Mariani editor Jan Odijk editor Stelios Piperidis editor Daniel Tapias editor European Language Resources Association (ELRA) Marrakech, Morocco conference publication heeren-etal-2008-evaluation https://aclanthology.org/L08-1142/ 2008-05