Toshiba ASKMi at NTCIR-4 QAC2

  title={Toshiba ASKMi at NTCIR-4 QAC2},
  author={Tetsuya Sakai and Yoshimi Saito and Yumi Ichimura and Makoto Koyama and Tomoharu Kokubu},
Toshiba participated in NTCIR-4 QAC2 Subtask 1: this is our first QAC participation. Using our newly developed Japanese QA system called ASKMi, we submitted two runs, one using Okapi/BM25 for document retrieval (TSB-A) and the other using Boolean AND constraints before applying Okapi/BM25 (TSB-B). We achieved the 5th best performance among the 17 participants (8th and 9th among the 25 submitted runs). This paper briefly describes ASKMi, and analyses the formal run and oracle run results using… CONTINUE READING