A Mathematical Model of Meaning and its Application to Multidatabase Systems. - Takashi Kitagawa; Yasushi Kiyoki (RIDE-IMS, 1993)

A Metadatabase System for Semantic Image Search by a Mathematical Model of Meaning. - Yasushi Kiyoki; Takashi Kitagawa; Takanari Hayama (SIGMOD Rec., 1994)

An Associative Search Method Based on Symbolic Filtering and Semantic Ordering for Database Systems. - Naofumi Yoshida; Yasushi Kiyoki; Takashi Kitagawa (DS-7, 1997)

A Metadatabase System for Semantic Image Search by a Mathematical Model of Meaning. - Yasushi Kiyoki; Takashi Kitagawa; Takanari Hayama (Multimedia Data Management, 1998)

A Semantic Media Data Search Method Based on a Mathematical Model of Meaning for Multimedia Information Systems. - Takashi Kitagawa; Yasushi Kiyoki; Kyoko Nakamura (EJC, 1998)

A Multi-Language Oriented Intelligent Information Retrieval System Utilizing a Semantic Associative Search Method. - Xing Chen 003; Yasushi Kiyoki; Takashi Kitagawa (Applied Informatics, 1999)

Application of a Semantic Associative Search Method to Multidatabases for Environmental Information. - Yasushi Kiyoki; Takashi Kitagawa (EJC, 1999)

A Semantic Metadata-Translation Method for Multilingual Cross-Language Information Retrieval. - Xing Chen 003; Yasushi Kiyoki; Takashi Kitagawa (EJC, 2000)

Fundamental Framework for Media Data Retrieval Systems using Media-lexico Transformation Operator - in the Case of Musical MIDI Data. - Takashi Kitagawa; Yasushi Kiyoki (EJC, 2000)

Regularization Method by Rank Revealing QR Factorization and Its Optimization. - Susumu Nakata; Takashi Kitagawa; Yohsuke Hosoda (NAA, 2000)

A Semantic Associative Search Method for WWW Information Resources. - Yasushi Kiyoki; Xing Chen 003; Takashi Kitagawa (WISE, 2000)

An ID Coding Scheme for Fingerprinting, Randomized c-Secure CRT Code. - Hajime Watanabe; Takashi Kitagawa (ICICS, 2002)

A Random-Error-Resilient Collusion-Secure Fingerprinting Code, Randomized c-Secure CRT Code. - Hajime Watanabe; Takashi Kitagawa (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2003)

An implementation method of automatic metadata extraction method for music data and its application to semantic associative search. - Takashi Kitagawa; Takafumi Nakanishi; Yasushi Kiyoki (Syst. Comput. Jpn., 2004)

Applying Fujisaki-Okamoto to Identity-Based Encryption. - Peng Yang 002; Takashi Kitagawa; Goichiro Hanaoka; Rui Zhang 002; Kanta Matsuura; Hideki Imai (AAECC, 2006)

Generic Transforms to Acquire CCA-Security for Identity Based Encryption: The Cases of FOpkc and REACT. - Takashi Kitagawa; Peng Yang 002; Goichiro Hanaoka; Rui Zhang 002; Hajime Watanabe; Kanta Matsuura; Hideki Imai (ACISP, 2006)

Visualization of music impression in facial expression to represent emotion. - Takafumi Nakanishi; Takashi Kitagawa (APCCM, 2006)

An Implementation Method of an Integrated Associative Search for Mathematical Expressions. - Sadaya Kishimoto; Takafumi Nakanishi; Mamoru Murakata; Toru Otsuka; Tetsuya Sakurai; Takashi Kitagawa (Databases and Applications, 2006)

An Implementation Method of a Heterogeneous Associative Media Data Search for Music Data and Image Data. - Takafumi Nakanishi; Takashi Kitagawa (Databases and Applications, 2006)

A Method of Automatic Metadata Extraction Corresponding to the Impression by Sound of the Words. - Hidenori Homma; Takafumi Nakanishi; Takashi Kitagawa (EJC, 2006)

An Improvement of Tardos's Collusion-Secure Fingerprinting Codes with Very Short Lengths. - Koji Nuida; Satoshi Fujitsu; Manabu Hagiwara; Takashi Kitagawa; Hajime Watanabe; Kazuto Ogawa; Hideki Imai (AAECC, 2007)

A Tracing Algorithm for Short 2-Secure Probabilistic Fingerprinting Codes Strongly Protecting Innocent Users. - Satoshi Fujitsu; Koji Nuida; Manabu Hagiwara; Takashi Kitagawa; Hajime Watanabe; Kazuto Ogawa; Hideki Imai (CCNC, 2007)

Construction of a metadata space for a specific field of knowledge from an index of a document. - Takafumi Nakanishi; Sadaya Kishimoto; Tetsuya Sakurai; Takashi Kitagawa (Syst. Comput. Jpn., 2007)

An improvement of discrete Tardos fingerprinting codes. - Koji Nuida; Satoshi Fujitsu; Manabu Hagiwara; Takashi Kitagawa; Hajime Watanabe; Kazuto Ogawa; Hideki Imai (IACR Cryptol. ePrint Arch., 2008)

Smallest Size of Circulant Matrix for Regular (3, L) and (4, L) Quasi-Cyclic LDPC Codes with Girth 6. - Manabu Hagiwara; Marc P. C. Fossorier; Takashi Kitagawa; Hideki Imai (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2009)

An Efficient 2-Secure and Short Random Fingerprint Code and Its Security Evaluation. - Koji Nuida; Satoshi Fujitsu; Manabu Hagiwara; Hideki Imai; Takashi Kitagawa; Kazuto Ogawa; Hajime Watanabe (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2009)

Efficient and Fully Secure Forward Secure Ciphertext-Policy Attribute-Based Encryption. - Takashi Kitagawa; Hiroki Kojima; Nuttapong Attrapadung; Hideki Imai (ISC, 2013)

A Method of Knowledge Creation and Knowledge Utilization by Generalized Inverse Operator. - Ryotaro Okada; Takafumi Nakanishi; Takashi Kitagawa (IIAI-AAI, 2014)

Automatic media content creation system according to an impression by recognition-creation operators. - Takafumi Nakanishi; Ryotaro Okada; Takashi Kitagawa (ICIS, 2016)

Evaluation Indexes of Customer Journey for Contents of Owned Media. - Kyohei Matsumoto; Takafumi Nakanishi; Takashi Kitagawa (EJC, 2016)

Semantic-Dependent Access Log Analysis for Predicting the Demographic Data. - Kyohei Matsumoto; Takafumi Nakanishi; Takashi Kitagawa (EJC, 2018)

NaviMine: A tool for mining trajectories through behavior prediction. - Yiming Tian; Takuya Maekawa; Takahiro Hara; Yojiro Yokomori; Takashi Kitagawa (PerCom Workshops, 2021)

Relationship between Tissue Gliding of the Lateral Thigh and Gait Parameters after Trochanteric Fractures. - Kengo Kawanishi; Daisuke Fukuda; Hiroyuki Niwa; Taisuke Okuno; Toshinori Miyashita; Takashi Kitagawa; Shintarou Kudo (Sensors, 2022)