Preface from the Organizing Chair [PDF]
Jun Adachi
Preface from the Program Chair [PDF]
Noriko Kando
Overview of the Fourth NTCIR Workshop [PDF]
Noriko Kando
Cross-Lingual Information Retrieval Task (CLIR)
Overview of CLIR Task at the Fourth NTCIR Workshop [PDF]
Kazuaki Kishida, Kuang-hua Chen, Sukhoon Lee, Kazuko Kuriyama, Noriko Kando, Hsin-Hsi Chen, Sung Hyon Myaeng and Koji Eguchi
Cross-Language IR at University of Tsukuba: Automatic Transliteration for Japanese, English, and Korean [PDF]
Atsushi Fujii and Tetsuya Ishikawa
Chinese and Korean Topic Search of Japanese News Collections [PDF]
Fredric C. Gey
Combination Approaches in Information Retrieval: Words vs. N-grams and Query Translation vs. Document Translation [PDF]
In-Su Kang, Seung-Hoon Na and Jong-Hyeok Lee
CLIR Using Web Directory at NTCIR-4 [PDF]
Fuminori Kimura, Akira Maeda and Shunsuke Uemura
Prediction of Performance on Cross-Lingual Information Retrieval by Regression Models [PDF]
Kazuaki Kishida, Kazuko Kuriyama, Noriko Kando and Koji Eguchi
Ricoh in the NTCIR4 CLIR Tasks [PDF]
Yuichi Kojima and Hideo Itoh
NTCIR-4 Chinese, English, Korean Cross Language Retrieval Experiments Using PIRCS [PDF]
Kui-Lam Kwok, Norbert Dinstl and Sora Choi
University of Chicago at NTCIR4 CLIR: Multi-Scale Query Expansion [PDF]
Gina-Anne Levow
Merging Multilingual Information Retrieval Results Based on Prediction of Retrieval Effectiveness [PDF]
Wen-Cheng Lin and Hsin-Hsi Chen
Pseudo-Relevance Feedback and Title Re-Ranking for Chinese Information Retrieval [PDF]
Robert W.P. Luk and K.F. Wong
Thomson Legal and Regulatory at NTCIR-4: Monolingual and Pivot-Language Retrieval Experiments [PDF]
Isabelle Moulinier
Integration of PLSA into Probabilistic CLIR Model - Yokohama National University at NTCIR4 CLIR - [PDF]
Tetsu Muramatsu and Tatsunori Mori
Applying Multiple Characteristics and Techniques to Obtain High Levels of Performance in Information Retrieval at NTCIR-4 [PDF]
Masaki Murata, Qing Ma and Hitoshi Isahara
NTCIR-4 CLIR Experiments at Oki [PDF]
Tetsuji Nakagawa and Mihoko Kitamura
Justsystem-Clairvoyance CLIR Experiments at NTCIR-4 Workshop [PDF]
Yan Qu, Gregory Grefenstette, David A. Hull, David A. Evans, Motoko Ishikawa, Setsuko Nara, Toshiya Ueda, Daisuke Noda, Kousaku Arita, Yuki Funakoshi and Hiroshi Matsuda
Toshiba BRIDJE at NTCIR-4 CLIR: Monolingual/Bilingual IR and Flexible Feedback [PDF]
Tetsuya Sakai, Makoto Koyama, Akira Kumano and Toshihiko Manabe
Report on CLIR Task for the NTCIR-4 Evaluation Campaign [PDF]
Jacques Savoy
KUNLP System for NTCIR-4 Korean-English Cross-Language Information Retrieval [PDF]
Hee-Cheol Seo, Sang-Bum Kim, Ho-Gun Lim and Hae-Chang Rim
CJK Experiments with Hummingbird SearchServerTM at NTCIR-4 [PDF]
Stephen Tomlinson
Global and Local Term Expansion for Text Retrieval [PDF]
Yuen-Hsien Tseng, Da-Wei Juang and Shiu-Han Chen
Chinese Information Retrieval Based on Terms and Ontology [PDF]
Lingpeng Yang, Donghong Ji and Li Tang
Applying Language Model into IR Task [PDF]
Junlin Zhang, Le Sun, Yongche Zhang and Yufang Sun
RMIT Chinese-English CLIR at NTCIR-4 [PDF]
Ying Zhang and Phil Vines
Experiments on Chinese-English Cross-language Retrieval at NTCIR-4 [PDF]
Yilu Zhou, Jialun Qin, Michael Chau and Hsinchun Chen
PATENT Retrieval Task (PATENT)
Overview of Patent Retrieval Task at NTCIR-4 [PDF]
Atsushi Fujii, Makoto Iwayama and Noriko Kando
Document Structure Analysis in Associative Patent Retrieval [PDF]
Atsushi Fujii and Tetsuya Ishikawa
Revisiting Document Length Hypotheses: NTCIR-4 CLIR and Patent Experiments at Patolis [PDF]
Sumio Fujita
NTCIR-4 Patent Retrieval Experiments at RICOH [PDF]
Hideo Itoh
Invalidity Patent Search System of NTT DATA [PDF]
Kazuya Konishi, Akira Kitauchi and Toru Takaki
Two-Stage Patent Retrieval Method Considering Claim Structure [PDF]
Hisao Mase, Tadataka Matsubayashi, Yuichi Ogawa, Makoto Iwayama and Tadaaki Oshio
NTCIR-4 PATENT Experiments at Osaka Kyoiku University - Gram-Based Passage Index and Essential Words - [PDF]
Takashi Sato and Nao Hatta
Can Claim Analysis Contribute toward Patent Map Generation? [PDF]
Akihiro Shinmori, Manabu Okumura, Yuzo Marukawa and Makoto Iwayama
Experiments on Patent Retrieval at NTCIR-4 Workshop [PDF]
Hironori Takeuchi, Naohiko Uramoto and Koichi Takeda
Patent Map Generation Using Concept-Based Vector Space Model [PDF]
Hideyuki Uchida, Atsushi Mano and Takashi Yukawa
Question Answering Challenge (QAC)
Question Answering Challenge for Five Ranked Answers and List Answers - Overview of NTCIR4 QAC2 Subtask 1 and 2 - [PDF]
Jun'ichi Fukumoto, Tsuneaki Kato and Fumito Masui
Question Answering Challenge for Information Access Dialogue - Overview of NTCIR4 QAC2 Subtask 3 - [PDF]
Tsuneaki Kato, Jun'ichi Fukumoto and Fumito Masui
Question Answering Using “Common Sense” and Utility Maximization Principle [PDF]
Tomoyosi Akiba, Katunobu Itou and Atsushi Fujii
Oki QA System for QAC-2 [PDF]
Masachika Fuchigami, Hiroyuki Ohnuma and Atsushi Ikeno
Rits-QA: List Answer Detection and Context Task with Zero Anaphora Handling [PDF]
Jun'ichi Fukumoto, Tatsuhiro Niwa, Makoto Itoigawa and Megumi Matsuda
Question Answering System Based on Expanded Answer Types and Multi-Scores [PDF]
Naoya Hidaka, Fumito Masui and Keiko Tosaki
Question Answering System Using Concept-Based Vector Space Model [PDF]
Isrami Ismail and Takashi Yukawa
NTT's Question Answering System for NTCIR QAC2 [PDF]
Hideki Isozaki
A Question Answering System Based on Vector Similarity [PDF]
Takuya Kosugi, Hiroya Susuki, Hiroyuki Okamoto and Hiroaki Saito
GDQA: Graph Driven Question Answering System - NTCIR-4 QAC2 Experiments - [PDF]
Gakuto Kurata, Naoaki Okazaki and Mitsuru Ishizuka
Japanese Q/A System Using A* Search and Its Improvement - Yokohama National University at QAC2 - [PDF]
Tatsunori Mori
Japanese Question-Answering System Using Decreased Adding with Multiple Answers [PDF]
Masaki Murata, Masato Utiyama and Hitoshi Isahara
POSTECH Question-Answering Experiments at NTCIR4-QAC [PDF]
Seung-Hoon Na, In-Su Kang and Jong-hyeok Lee
Question Answering System QUARK [PDF]
Yasuo Nii, Keizo Kawata, Tatsumi Yoshida, Hiroyuki Sakai and Shigeru Masuyama
NTCIR-4 QAC Experiments at Matsushita [PDF]
Masako Nomoto, Yoshio Fukushige, Mitsuhiro Sato and Hiroyuki Suzuki
Are We Making Progress? - An Analysis of NTCIR QAC1 and 2 - [PDF]
Masako Nomoto, Yoshio Fukushige, Mitsuhiro Sato and Hiroyuki Suzuki
Finding Relevant Answers in Question Answering System Contest [PDF]
David R. Ramamonjisoa
Toshiba ASKMi at NTCIR-4 QAC2 [PDF]
Tetsuya Sakai, Yoshimi Saito, Yumi Ichimura, Makoto Koyama and Tomoharu Kokubu
NYU/CRL QA System for QAC-2 [PDF]
Satoshi Sekine, Kiyoshi Sudo, Yusuke Shinyama, Chikashi Nobata, Kiyotaka Uchimoto and Hitoshi Isahara
NAIST QA System for QAC2 [PDF]
Tetsuro Takahashi, Kozo Nawata, Kentaro Inui and Yuji Matsumoto
NTT DATA Question-Answering Experiment at the NTCIR-4 QAC2 [PDF]
Toru Takaki
Text Summarization Challenge (TSC)
Text Summarization Challenge 3 - Text Summarization Evaluation at NTCIR Workshop 4 - [PDF], [Erratum]
Tsutomu Hirao, Manabu Okumura, Takahiro Fukusima and Hidetsugu Nanba
Multi-Document Summarization Using Document Set Type Classification [PDF]
Jun'ichi Fukumoto
Multi-Document Summarization Using Cross-Language Texts [PDF]
Jung-Min Lim, In-Su Kang and Jong-Hyeok Lee
Multi-Document Summarization Using a Question-Answering Engine - Yokohama National University at TSC3 - [PDF]
Tatsunori Mori, Masanori Nozawa and Yoshiaki Asada
Comparison of Feature Usage at TSC-3 Summarization Tasks [PDF]
Chikashi Nobata, Satoshi Sekine, Kiyotaka Uchimoto and Hitoshi Isahara
TISS: An Integrated Summarization System for TSC-3 [PDF]
Naoaki Okazaki, Yutaka Matsuo and Mitsuru Ishizuka
A Multiple-Document Summarization System Introducing User Interaction for Reflecting User's Summarization Need [PDF]
Hiroyuki Sakai and Shigeru Masuyama
Query-Based Multidocument Summarization for Information Retrieval [PDF]
Toshihiko Sakurai and Akira Utsumi
User-Focused Multi-Document Summarization with Paragraph Clustering and Sentence-Type Filtering [PDF]
Yohei Seki, Koji Eguchi and Noriko Kando
Multiple News Articles Summarization Based on Event Reference Information [PDF]
Masaharu Yoshioka and Makoto Haraguchi
Overview of WEB Task at the Fourth NTCIR Workshop [PDF]
Koji Eguchi, Keizo Oyama, Akiko Aizawa and Haruko Ishikawa
Overview of the Informational Retrieval Task at NTCIR-4 WEB [PDF]
Koji Eguchi, Keizo Oyama, Akiko Aizawa and Haruko Ishikawa
An Evaluation Method of Web Search Engines Based on Users’ Sense [PDF]
Takashi Ohtsuka, Koji Eguchi and Hayato Yamana
Overview of the NTCIR-4 WEB Navigational Retrieval Task 1 [PDF]
Keizo Oyama, Koji Eguchi, Haruko Ishikawa and Akiko Aizawa
Preliminary Workshop on Evaluation of Geographic Information Retrieval Systems for Web Documents [PDF]
Masatoshi Arikawa, Takeshi Sagara, Kouzou Noaki and Hideyuki Fujita
Overview of the Topical Classification Task at NTCIR-4 WEB [PDF]
Koji Eguchi
Experiments on Web Retrieval Driven by Spontaneously Spoken Queries [PDF]
Tomoyosi Akiba, Atsushi Fujii, Tetsuya Ishikawa and Katunobu Itou
Giving an Upprebound of the Number of Clusters and Relevant Words in Hierarchical Document Clustering Based on BIC [PDF]
Yoshio Fukushige
R2D2 at NTCIR-4 Web Retrieval Task [PDF]
Teruhito Kanazawa, Tomonari Masada, Atsuhiro Takasu and Jun Adachi
Document Clustering at NTCIR-4 Workshop: Limiting Search Space of the K-Means Method Using Word Occurrence [PDF]
Yuji Kaneda, Naonori Ueda and Kazumi Saito
Navigation Retrieval with Site Anchor Text [PDF]
Hideki Kawai, Kenji Tateishi and Toshikazu Fukushima
NTCIR-4 WEB Experiments at Osaka Kyoiku University - Static/Dynamic Scoring Using Link Structure Analysis and Web Page Grouping - [PDF]
Hitoshi Nakakubo, Peng Zhang and Takashi Sato
Overlapping Clustering Method Using Local and Global Importance of Feature Terms at NTCIR-4 WEB Task [PDF]
Manabu Ohta, Hirokazu Narita and Shigeyoshi Ohno
Web Document Clustering Using Threshold Selection Partitioning [PDF]
Minoru Sasaki and Hiroyuki Shinnou
A Web Search Result Classification System Based on the Degree of Suitability for Specialists [PDF]
Masanobu Tsuruta, Yoshiyuki Umemura, Hiroyuki Sakai and Shigeru Masuyama
Using Virtual Document for NTCIR-4 Web Information Retrieval Task [PDF]
Yinghui Xu and Kyoji Umemura
Study on the Combination of Probabilistic and Boolean IR Models for WWW Documents Retrieval [PDF]
Masaharu Yoshioka and Makoto Haraguchi
Evaluating ADM on a Four-Level Relevance Scale Document Set from NTCIR [PDF]
Vincenzo Della Mea, Luca Di Gaspero and Stefano Mizzaro
Looking for a Few Good Metrics: Automatic Summarization Evaluation - How Many Samples Are Enough? [PDF]
Chin-Yew Lin
Towards Innovative Evaluation Methodologies for Speech Translation [PDF]
Michael Paul, Hiromi Nakaiwa and Marcello Federico
New Performance Metrics Based on Multigrade Relevance: Their Application to Question Answering [PDF]
Tetsuya Sakai
(*)Erratum by the author. [added on 2008-09-18]
Aligning Patent Claims with Detailed Descriptions for Readability [PDF]
Akihiro Shinmori and Manabu Okumura