1. Akiba T, Nishizaki H, Aikawa K, Kawahara T, Matsui T (2011) Overview of the IR for spoken documents task in NTCIR-9 workshop. In: Kando N, Ishikawa D, Sugimoto M (eds) Proceedings of the 9th NTCIR workshop meeting on evaluation of information access technologies: information retrieval, question answering and cross-lingual information access. National Institute of Informatics, Tokyo
2. Akiba T, Nishizaki H, Aikawa K, Hu X, Itoh Y, Kawahara T, Nakagawa S, Nanjo H, Yamashita Y (2013) Overview of the NTCIR-10 spokendoc-2 task. In: Kando N, Kishida K (eds) Proceedings of the 10th NTCIR conference on evaluation of information access technologies. National Institute of Informatics, Tokyo
3. Akiba T, Nishizaki H, Nanjo H, Jones GJF (2014) Overview of the NTCIR-11 spokenquery&doc task. In: Kando N, Joho H, Kishida K (eds) Proceedings of the 11th NTCIR conference on evaluation of information access technologies. National Institute of Informatics, Tokyo
4. Akiba T, Nishizaki H, Nanjo H, Jones GJF (2016) Overview of the ntcir-12 spokenquery&doc-2 task. In: Kando N, Sakai T, Sanderson M (eds) Proceedings of the 12th NTCIR conference on evaluation of information access technologies. National Institute of Informatics, Tokyo
5. Aly R, Ordelman R, Eskevich M, Jones GJF, Chen S (2013) Linking inside a video collection - what and how to measure? In: Proceedings of the first worldwide web workshop on linked media (LiME-2013), International World Wide Web Conference Committee (IW3C2), Geneva