NAIST at the CLEF 2013 QA4MRE pilot task

Philip Arthur, Graham Neubig, Sakriani Sakti, Tomoki Toda, Satoshi Nakamura

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearchpeer-review

5 Citations (Scopus)


This paper describes the Nara Institute of Science and Technology's system for the entrance exam pilot task of CLEF 2013 QA4MRE. The core of the system is a similar to the system for the main task of CLEF 2013 QA4MRE. We use minimum error rate training (MERT) to train the weights of the model and also propose a novel method for MERT with the addition of a threshold that defines the certainty with which we must answer questions. The system received a score of 22% c@1.

Original languageEnglish
Title of host publication2013 Cross Language Evaluation Forum Conference
Publication statusPublished - 2013
Externally publishedYes
EventCross Language Evaluation Forum Conference 2013 - Valencia, Spain
Duration: 23 Sept 201326 Sept 2013
Conference number: 4th


ConferenceCross Language Evaluation Forum Conference 2013
Abbreviated titleCLEF 2013
Internet address


  • Discriminative learning
  • Inter-sentence features
  • Linear feature model
  • Machine reading
  • Minimum error rate training
  • Question answering

Cite this