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    Proceedings of the Fourth NTCIR Workshop on Research in Information Access Technologies Information Retrieval, Question Answering and Summarization, NTCIR-4, National Center of Sciences, Tokyo, Japan, June 2-4, 2004

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    Proceedings of the Fourth NTCIR Workshop on Research in Information Access Technologies Information Retrieval, Question Answering and Summarization, NTCIR-4, National Center of Sciences, Tokyo, Japan, June 2-4, 2004

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    A Multiple-Document Summarization System Introducing User Interaction for Reflecting User's Summarization Need
    Hiroyuki Sakai | Shigeru Masuyama

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    A Question Answering System Based on Vector Similarity
    Takuya Kosugi | Hiroya Susuki | Hiroyuki Okamoto | Hiroaki Saito

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    A Web Search Result Classification System Based on the Degree of Suitability for Specialists
    Masanobu Tsuruta | Yoshiyuki Umemura | Hiroyuki Sakai | Shigeru Masuyama

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    Aligning Patent Claims with Detailed Descriptions for Readability
    Akihiro Shinmori | Manabu Okumura

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    An Evaluation Method of Web Search Engines Based on Users' Sense
    Takashi Ohtsuka | Koji Eguchi | Hayato Yamana

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    Applying Language Model into IR Task
    Junlin Zhang | Le Sun | Yongche Zhang | Yufang Sun

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    Applying Multiple Characteristics and Techniques to Obtain High Levels of Performance in Information Retrieval at NTCIR-4
    Masaki Murata | Qing Ma | Hitoshi Isahara

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    Are We Making Progress? - An Analysis of NTCIR QAC1 and 2
    Masako Nomoto | Yoshio Fukushige | Mitsuhiro Sato | Hiroyuki Suzuki

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    CJK Experiments with Hummingbird SearchServer^ at NTCIR-4
    Stephen Tomlinson

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    CLIR Using Web Directory at NTCIR-4
    Fuminori Kimura | Akira Maeda | Shunsuke Uemura

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    Can Claim Analysis Contribute toward Patent Map Generation?
    Akihiro Shinmori | Manabu Okumura | Yuzo Marukawa | Makoto Iwayama

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    Chinese Information Retrieval Based on Terms and Ontology
    Lingpeng Yang | Donghong Ji | Li Tang

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    Chinese and Korean Topic Search of Japanese News Collections
    Fredric C. Gey

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    Combination Approaches in Information Retrieval: Words vs. N-grams and Query Translation vs. Document Translation
    In-Su Kang | Seung-Hoon Na | Jong-Hyeok Lee

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    Comparison of Feature Usage at TSC-3 Summarization Tasks
    Chikashi Nobata | Satoshi Sekine | Kiyotaka Uchimoto | Hitoshi Isahara

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    Cross-Language IR at University of Tsukuba: Automatic Transliteration for Japanese, English, and Korean
    Atsushi Fujii | Tetsuya Ishikawa

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    Document Clustering at NTCIR-4 Workshop: Limiting Search Space of the K-Means Method Using Word Occurrence
    Yuji Kaneda | Naonori Ueda | Kazumi Saito

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    Document Structure Analysis in Associative Patent Retrieval
    Atsushi Fujii | Tetsuya Ishikawa

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    Evaluating ADM on a Four-Level Relevance Scale Document Set from NTCIR
    Vincenzo Della Mea | Luca Di Gaspero | Stefano Mizzaro

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    Experiments on Chinese-English Cross-language Retrieval at NTCIR-4
    Yilu Zhou | Jialun Qin | Michael Chau | Hsinchun Chen

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    Experiments on Patent Retrieval at NTCIR-4 Workshop
    Hironori Takeuchi | Naohiko Uramoto | Koichi Takeda

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    Experiments on Web Retrieval Driven by Spontaneously Spoken Queries
    Tomoyosi Akiba | Atsushi Fujii | Tetsuya Ishikawa | Katunobu Itou

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    Finding Relevant Answers in Question Answering System Contest
    David Ramamonjisoa

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    GDQA: Graph Driven Question Answering System - NTCIR-4 QAC2 Experiments
    Gakuto Kurata | Naoaki Okazaki | Mitsuru Ishizuka

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    Giving an Upprebound of the Number of Clusters and Relevant Words in Hierarchical Document Clustering Based on BIC
    Yoshio Fukushige

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    Global and Local Term Expansion for Text Retrieval
    Yuen-Hsien Tseng | Da-Wei Juang | Shiu-Han Chen

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    Integration of PLSA into Probabilistic CLIR Model - Yokohama National University at NTCIR4 CLIR
    Tetsu Muramatsu | Tatsunori Mori

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    Invalidity Patent Search System of NTT DATA
    Kazuya Konishi | Akira Kitauchi | Toru Takaki

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    Japanese Q/A System Using A* Search and Its Improvement - Yokohama National University at QAC2
    Tatsunori Mori

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    Japanese Question-Answering System Using Decreased Adding with Multiple Answers
    Masaki Murata | Masao Utiyama | Hitoshi Isahara

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    Justsystem-Clairvoyance CLIR Experiments at NTCIR-4 Workshop
    Yan Qu | Gregory Grefenstette | David A. Hull | David A. Evans | Motoko Ishikawa | Setsuko Nara | Toshiya Ueda | Daisuke Noda | Kousaku Arita | Yuki Funakoshi | Hiroshi Matsuda

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    KUNLP System for NTCIR-4 Korean-English Cross-Language Information Retrieval
    Hee-Cheol Seo | Sang-Bum Kim | Ho-Gun Lim | Hae-Chang Rim

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    Looking for a Few Good Metrics: Automatic Summarization Evaluation - How Many Samples Are Enough?
    Chin-Yew Lin

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    Merging Multilingual Information Retrieval Results Based on Prediction of Retrieval Effectiveness
    Wen-Cheng Lin | Hsin-Hsi Chen

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    Multi-Document Summarization Using Cross-Language Texts
    Jung-Min Lim | In-Su Kang | Jong-Hyeok Lee

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    Multi-Document Summarization Using a Question-Answering Engine - Yokohama National University at TSC3
    Tatsunori Mori | Masanori Nozawa | Yoshiaki Asada

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    Multi-Document Summarization Using Document Set Type Classification
    Jun-ichi Fukumoto

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    Multiple News Articles Summarization Based on Event Reference Information
    Masaharu Yoshioka | Makoto Haraguchi

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    NAIST QA System for QAC2
    Tetsuro Takahashi | Kozo Nawata | Kentaro Inui | Yuji Matsumoto

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    NTCIR-4 CLIR Experiments at Oki
    Tetsuji Nakagawa | Mihoko Kitamura

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    NTCIR-4 Chinese, English, Korean Cross Language Retrieval Experiments Using PIRCS
    Kui-Lam Kwok | Norbert Dinstl | Sora Choi

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    NTCIR-4 PATENT Experiments at Osaka Kyoiku University - Gram-Based Passage Index and Essential Words
    Takashi Sato | Nao Hatta

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    NTCIR-4 Patent Retrieval Experiments at RICOH
    Hideo Itoh

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    NTCIR-4 QAC Experiments at Matsushita
    Masako Nomoto | Yoshio Fukushige | Mitsuhiro Sato | Hiroyuki Suzuki

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    NTCIR-4 WEB Experiments at Osaka Kyoiku University - Static/Dynamic Scoring Using Link Structure Analysis and Web Page Grouping
    Hitoshi Nakakubo | Peng Zhang | Takashi Sato

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    NTT DATA Question-Answering Experiment at the NTCIR-4 QAC2
    Toru Takaki

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    NTT's Question Answering System for NTCIR QAC2
    Hideki Isozaki

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    NYU/CRL QA System for QAC-2
    Satoshi Sekine | Kiyoshi Sudo | Yusuke Shinyama | Chikashi Nobata | Kiyotaka Uchimoto | Hitoshi Isahara

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    Navigation Retrieval with Site Anchor Text
    Hideki Kawai | Kenji Tateishi | Toshikazu Fukushima

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    New Performance Metrics Based on Multigrade Relevance: Their Application to Question Answering
    Tetsuya Sakai

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    Oki QA System for QAC-2
    Masachika Fuchigami | Hiroyuki Ohnuma | Atsushi Ikeno

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    Overlapping Clustering Method Using Local and Global Importance of Feature Terms at NTCIR-4 WEB Task
    Manabu Ohta | Hirokazu Narita | Shigeyoshi Ohno

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    Overview of CLIR Task at the Fourth NTCIR Workshop
    Kazuaki Kishida | Kuang-hua Chen | Sukhoon Lee | Kazuko Kuriyama | Noriko Kando | Hsin-Hsi Chen | Sung-Hyon Myaeng | Koji Eguchi

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    Overview of Patent Retrieval Task at NTCIR-4
    Atsushi Fujii | Makoto Iwayama | Noriko Kando

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    Overview of WEB Task at the Fourth NTCIR Workshop
    Keizo Oyama | Akiko Aizawa | Haruko Ishikawa

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    Overview of the Fourth NTCIR Workshop
    Noriko Kando

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    Overview of the Informational Retrieval Task at NTCIR-4 WEB
    Koji Eguchi | Keizo Oyama | Akiko Aizawa | Haruko Ishikawa

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    Overview of the NTCIR-4 WEB Navigational Retrieval Task 1
    Keizo Oyama | Koji Eguchi | Haruko Ishikawa | Akiko Aizawa

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    Overview of the Topical Classification Task at NTCIR-4 WEB
    Koji Eguchi

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    POSTECH Question-Answering Experiments at NTCIR4-QAC
    Seung-Hoon Na | In-Su Kang | Jong-Hyeok Lee

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    Patent Map Generation Using Concept-Based Vector Space Model
    Hideyuki Uchida | Atsushi Mano | Takashi Yukawa

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    Prediction of Performance on Cross-Lingual Information Retrieval by Regression Models
    Kazuaki Kishida | Kazuko Kuriyama | Noriko Kando | Koji Eguchi

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    Preface from the Organizing Chair
    Jun Adachi

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    Preface from the Program Chair
    Noriko Kando

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    Preliminary Workshop on Evaluation of Geographic Information Retrieval Systems for Web Documents
    Masatoshi Arikawa | Takeshi Sagara | Kouzou Noaki | Hideyuki Fujita

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    Pseudo-Relevance Feedback and Title Re-Ranking for Chinese Information Retrieval
    Robert W. P. Luk | Kam-Fai Wong

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    Query-Based Multidocument Summarization for Information Retrieval
    Toshihiko Sakurai | Akira Utsumi

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    Question Answering Challenge for Five Ranked Answers and List Answers - Overview of NTCIR4 QAC2 Subtask 1 and 2
    Jun-ichi Fukumoto | Tsuneaki Kato | Fumito Masui

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    Question Answering Challenge for Information Access Dialogue - Overview of NTCIR4 QAC2 Subtask
    Tsuneaki Kato | Jun-ichi Fukumoto | Fumito Masui

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    Question Answering System Using Concept-Based Vector Space Model
    Isrami Ismail | Takashi Yukawa

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    Question Answering System QUARK
    Yasuo Nii | Keizo Kawata | Tatsumi Yoshida | Hiroyuki Sakai | Shigeru Masuyama

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    Question Answering System Based on Expanded Answer Types and Multi-Scores
    Naoya Hidaka | Fumito Masui | Keiko Tosaki

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    Question Answering Using "Common Sense" and Utility Maximization Principle
    Tomoyosi Akiba | Katunobu Itou | Atsushi Fujii

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    RMIT Chinese-English CLIR at NTCIR-4
    Ying Zhang | Phil Vines

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    R^D^ at NTCIR-4 Web Retrieval Task
    Teruhito Kanazawa | Tomonari Masada | Atsuhiro Takasu | Jun Adachi

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    Report on CLIR Task for the NTCIR-4 Evaluation Campaign
    Jacques Savoy

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    Revisiting Document Length Hypotheses: NTCIR-4 CLIR and Patent Experiments at Patolis
    Sumio Fujita

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    Ricoh in the NTCIR4 CLIR Tasks
    Yuichi Kojima | Hideo Itoh

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    Rits-QA: List Answer Detection and Context Task with Zero Anaphora Handling
    Jun-ichi Fukumoto | Tatsuhiro Niwa | Makoto Itoigawa | Megumi Matsuda

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    Study on the Combination of Probabilistic and Boolean IR Models for WWW Documents Retrieval
    Masaharu Yoshioka | Makoto Haraguchi

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    TISS: An Integrated Summarization System for TSC-3
    Naoaki Okazaki | Yutaka Matsuo | Mitsuru Ishizuka

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    Text Summarization Challenge 3 - Text Summarization Evaluation at NTCIR Workshop
    Tsutomu Hirao | Manabu Okumura | Takahiro Fukusima | Hidetsugu Nanba

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    Thomson Legal and Regulatory at NTCIR-4: Monolingual and Pivot-Language Retrieval Experiments
    Isabelle Moulinier

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    Toshiba ASKMi at NTCIR-4 QAC2
    Tetsuya Sakai | Yoshimi Saito | Yumi Ichimura | Makoto Koyama | Tomoharu Kokubu

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    Toshiba BRIDJE at NTCIR-4 CLIR: Monolingual/Bilingual IR and Flexible Feedback
    Tetsuya Sakai | Makoto Koyama | Akira Kumano | Toshihiko Manabe

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    Towards Innovative Evaluation Methodologies for Speech Translation
    Michael Paul | Hiromi Nakaiwa | Marcello Federico

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    Two-Stage Patent Retrieval Method Considering Claim Structure
    Hisao Mase | Tadataka Matsubayashi | Yuichi Ogawa | Makoto Iwayama | Tadaaki Oshio

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    University of Chicago at NTCIR4 CLIR: Multi-Scale Query Expansion
    Gina-Anne Levow

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    User-Focused Multi-Document Summarization with Paragraph Clustering and Sentence-Type Filtering
    Yohei Seki | Koji Eguchi | Noriko Kando

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    Using Virtual Document for NTCIR-4 Web Information Retrieval Task
    Yinghui Xu | Kyoji Umemura

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    Web Document Clustering Using Threshold Selection Partitioning
    Minoru Sasaki | Hiroyuki Shinnou