Efficient Search Server Assignment in a Disproportionate System Environment. - Toru Takaki; Tsuyoshi Kitani (SIGIR, 1998)

NTT DATA at TREC-7: System Approach for Ad-Hoc and Filtering. - Hiroyuke Nakajima; Toru Takaki; Tsutomu Hirao; Akira Kitauchi (TREC, 1998)

NTT DATA: Overview of system approach at TREC-8 ad-hoc and question answering. - Toru Takaki (TREC, 1999)

NTT DATA TREC-9 Question Answering Track Report. - Toru Takaki (TREC, 2000)

NTT DATA Question-Answering Experiment at the NTCIR-3 QAC. - Toru Takaki; Yoshio Eriguchi (NTCIR, 2002)

Associative document retrieval by query subtopic analysis and its application to invalidity patent search. - Toru Takaki; Atsushi Fujii; Tetsuya Ishikawa (CIKM, 2004)

Invalidity Patent Search System of NTT DATA. - Kazuya Konishi; Akira Kitauchi; Toru Takaki (NTCIR, 2004)

NTT DATA Question-Answering Experiment at the NTCIR-4 QAC2. - Toru Takaki (NTCIR, 2004)

F-term Classification System Using K-Nearest Neighbor Method. - Kazuya Konishi; Toru Takaki (NTCIR, 2007)

Medical Information Extracting System by Bootstrapping of NTTDRDH at NTCIR-10 MedNLP Task. - Yuji Nomura; Takashi Suenaga; Daisuke Satoh; Megumi Ohki; Toru Takaki (NTCIR, 2013)

Expanded Dependency Structure based Textual Entailment Recognition System of NTTDATA for NTCIR10-RITE2. - Megumi Ohki; Takashi Suenaga; Daisuke Satoh; Yuji Nomura; Toru Takaki (NTCIR, 2013)