Construction and Deployment of a Plant Ontology. - Riichiro Mizoguchi; Kouji Kozaki; Toshinobu Sano; Yoshinobu Kitamura (EKAW, 2000)

Hozo: An Environment for Building/Using Ontologies Based on a Fundamental Consideration of "Role" and "Relationship". - Kouji Kozaki; Yoshinobu Kitamura; Mitsuru Ikeda; Riichiro Mizoguchi (EKAW, 2002)

An Environment for Distributed Ontology Development Based on Dependency Management. - Eiichi Sunagawa; Kouji Kozaki; Yoshinobu Kitamura; Riichiro Mizoguchi (ISWC, 2003)

Developing Ontology-based Applications using Hozo. - Kouji Kozaki; Yoshinobu Kitamura; Riichiro Mizoguchi (Computational Intelligence, 2005)

Role Organization Model in Hozo. - Eiichi Sunagawa; Kouji Kozaki; Yoshinobu Kitamura; Riichiro Mizoguchi (EKAW, 2006)

Fundamental Consideration of Role Concepts for Ontology Evaluation. - Kouji Kozaki; Eiichi Sunagawa; Yoshinobu Kitamura; Riichiro Mizoguchi (EON@WWW, 2006)

Development of Contents Management System Based on Light-Weight Ontology. - Kouji Kozaki; Yoshinobu Kitamura; Riichiro Mizoguchi (IMECS, 2007)

A Framework for Cooperative Ontology Construction Based on Dependency Management of Modules. - Kouji Kozaki; Eiichi Sunagawa; Yoshinobu Kitamura; Riichiro Mizoguchi (ESOE, 2007)

Distributed and Collaborative Construction of Ontologies Using Hozo. - Kouji Kozaki; Eiichi Sunagawa; Yoshinobu Kitamura; Riichiro Mizoguchi (CKC, 2007)

The model of roles within an ontology development tool: Hozo. - Riichiro Mizoguchi; Eiichi Sunagawa; Kouji Kozaki; Yoshinobu Kitamura (Appl. Ontology, 2007)

Understanding Semantic Web Applications. - Kouji Kozaki; Yusuke Hayashi; Munehiko Sasajima; Shinya Tarumi; Riichiro Mizoguchi (ASWC, 2008)

Development of a Conceptual Map Generation Tool for Exploring Ontologies. - Kouji Kozaki; Takeru Hirota; Riichiro Mizoguchi (ESWC (Posters), 2008)

Instance Management Problems in the Role Model of Hozo. - Kouji Kozaki; Satoshi Endo; Riichiro Mizoguchi (PRICAI, 2008)

Divergent Exploration of an Ontology. - Takeru Hirota; Kouji Kozaki; Riichiro Mizoguchi (ISWC (Posters & Demos), 2008)

Knowledge Structuring Tool for Sustainability Science Based on Ontology Engineering. - Terukazu Kumazawa; Osamu Saito; Kouji Kozaki; Takanori Matsui; Riichiro Mizoguchi (CISIS, 2009)

Ontology Engineering Environments. - Riichiro Mizoguchi; Kouji Kozaki (Handbook on Ontologies, 2009)

Practical Considerations on Identity for Instance Management in Ontological Investigation. - Kouji Kozaki; Satoshi Endo; Riichiro Mizoguchi (EKAW, 2010)

Development of Fundamental Technologies for Better Understanding of Clinical Medical Ontologies. - Hiroko Kou; Mamoru Ohta; Jun Zhou; Kouji Kozaki; Riichiro Mizoguchi; Takeshi Imai; Kazuhiko Ohe (KEOD, 2010)

The Counting Problem in the Light of Role Kinds. - Claudio Masolo; Laure Vieu; Yoshinobu Kitamura; Kouji Kozaki; Riichiro Mizoguchi (AAAI Spring Symposium: Logical Formalizations of Commonsense Reasoning, 2011)

Dynamic Is - a Hierarchy Generation System Based on User's Viewpoint. - Kouji Kozaki; Keisuke Hihara; Riichiro Mizoguchi (JIST, 2011)

A Quality Assurance Framework for Ontology Construction and Refinement. - Mamoru Ohta; Kouji Kozaki; Riichiro Mizoguchi (AWIC, 2011)

Understanding an Ontology through Divergent Exploration. - Kouji Kozaki; Takeru Hirota; Riichiro Mizoguchi (ESWC (1), 2011)

An Advanced Strategy for Integration of Biological Measurement Data. - Hiroshi Masuya; Georgios V. Gkoutos; Nobuhiko Tanaka; Kazunori Waki; Yoshihiro Okuda; Tatsuya Kushida; Norio Kobayashi; Koji Doi; Kouji Kozaki; Robert Hoehndorf; Shigeharu Wakana; Tetsuro Toyoda; et al. (ICBO, 2011)

River Flow Model of Diseases. - Riichiro Mizoguchi; Kouji Kozaki; Hiroko Kou; Yuki Yamagata; Takeshi Imai; Kayo Waki; Kazuhiko Ohe (ICBO, 2011)

The RIKEN integrated database of mammals. - Hiroshi Masuya; Yuko Makita; Norio Kobayashi; Koro Nishikata; Yuko Yoshida; Yoshiki Mochizuki; Koji Doi; Terue Takatsuki; Kazunori Waki; Nobuhiko Tanaka; Manabu Ishii; Akihiro Matsushima; et al. (Nucleic Acids Res., 2011)

Ontological Modeling of Interoperable Abnormal States. - Yuki Yamagata; Hiroko Kou; Kouji Kozaki; Riichiro Mizoguchi; Takeshi Imai; Kazuhiko Ohe (JIST, 2012)

A Model of Derived Roles. - Kouji Kozaki; Yoshinobu Kitamura; Riichiro Mizoguchi (EKAW, 2012)

Ontological Analyses of Roles. - Riichiro Mizoguchi; Kouji Kozaki; Yoshinobu Kitamura (FedCSIS, 2012)

Identity Tracking of a Disease as a Causal Chain. - Kouji Kozaki; Riichiro Mizoguchi; Takeshi Imai; Kazuhiko Ohe (ICBO, 2012)

Browsing Causal Chains in a Disease Ontology. - Kouji Kozaki; Hiroko Kou; Yuki Yamagata; Takeshi Imai; Kazuhiko Ohe; Riichiro Mizoguchi (ISWC (Posters & Demos), 2012)

Ontology exploration tool for social, economic and environmental development. - Kouji Kozaki; Terukazu Kumazawa; Osamu Saito; Riichiro Mizoguchi (DEST, 2013)

Finer Investigation into Role. - Riichiro Mizoguchi; Kouji Kozaki; Yoshinobu Kitamura (FedCSIS (Position Papers), 2013)

Ontological Model of Abnormal States and its Application in the Medical Domain. - Yuki Yamagata; Hiroko Kou; Kouji Kozaki; Riichiro Mizoguchi; Takeshi Imai; Kazuhiko Ohe (ICBO, 2013)

Publishing a Disease Ontologies as Linked Data. - Kouji Kozaki; Yuki Yamagata; Takeshi Imai; Kazuhiko Ohe; Riichiro Mizoguchi (JIST, 2013)

Protein Experimental Information Management System (PREIMS) Based on Ontology: Development and Applications. - Junko Sato; Kouji Kozaki; Susumu Handa; Takashi Ikeda; Ryotaro Saka; Kohei Tomizuka; Yugo Nishiyama; Toshiyuki Okumura; Shinichi Hirai; Tadashi Ohno; Mamoru Ohta; Susumu Date; et al. (Inf. Media Technol., 2013)

Towards the Integration of Abnormality in Diseases. - Yuki Yamagata; Kouji Kozaki; Takeshi Imai; Kazuhiko Ohe; Riichiro Mizoguchi (ICBO, 2014)

Choosing Related Concepts for Intelligent Exploration. - Kouji Kozaki (JIST, 2014)

An Information Literacy Ontology and Its Use for Guidance Plan Design - An Example on Problem Solving. - Kouji Kozaki; Hiroko Kanoh; Takaaki Hishida; Motohiro Hasegawa (JIST, 2014)

A Keyword Exploration for Retrieval from Biomimetics Databases. - Kouji Kozaki; Riichiro Mizoguchi (JIST, 2014)

An Ontology Explorer for Biomimetics Database. - Kouji Kozaki; Riichiro Mizoguchi (ISWC (Posters & Demos), 2014)

An Intelligent SPARQL Query Builder for Exploration of Various Life-science Databases. - Atsuko Yamaguchi; Kouji Kozaki; Kai Lenz; Hongyan Wu; Norio Kobayashi (IESD@ISWC, 2014)

Prototype Implementation of SPARQL Builder for Life-science Databases by Intelligent Schema Analysis on RDF datasets. - Norio Kobayashi; Kai Lenz; Hongyan Wu; Kouji Kozaki; Atsuko Yamaguchi (SWAT4LS, 2014)

An ontological modeling approach for abnormal states and its application in the medical domain. - Yuki Yamagata; Kouji Kozaki; Takeshi Imai; Kazuhiko Ohe; Riichiro Mizoguchi (J. Biomed. Semant., 2014)

Efficiently Finding Paths Between Classes to Build a SPARQL Query for Life-Science Databases. - Atsuko Yamaguchi; Kouji Kozaki; Kai Lenz; Hongyan Wu; Yasunori Yamamoto; Norio Kobayashi (JIST, 2015)

Development of Ontology for Information Literary. - Hiroko Kanoh; Kouji Kozaki; Motohiro Hasegawa; Takaaki Hishida (KES, 2015)

RDF-Based Integration with SPARQL Building System for Life Science Database Archive. - Atsuko Yamaguchi; Katsuhiko Okubo; Norio Kobayashi; Kouji Kozaki; Sadahiro Kumagai; Kai Lenz; Tomoe Nobusada; Hongyan Wu; Yasunori Yamamoto; Hideki Hatanaka (SWAT4LS, 2015)

Families of roles: A new theory of occurrent-dependent roles. - Riichiro Mizoguchi; Antony Galton; Yoshinobu Kitamura; Kouji Kozaki (Appl. Ontology, 2015)

An Ontological Framework for Representing Topological Information in Human Anatomy. - Takeshi Imai; Emiko Yamada Shinohara; Masayuki Kajino; Ryota Sakurai; Kazuhiko Ohe; Kouji Kozaki; Riichiro Mizoguchi (ICBO/BioCreative, 2016)

Expanding Science and Technology Thesauri from Bibliographic Datasets Using Word Embedding. - Takahiro Kawamura; Kouji Kozaki; Tatsuya Kushida; Katsutaro Watanabe; Katsuji Matsumura (ICTAI, 2016)

Ontology Refinement System for Improving Consistency of Classification among Brother Concepts. - Takeshi Masuda; Kouji Kozaki; Kazunori Komatani (JIST (Workshops & Posters), 2016)

Semantic Data Acquisition by Traversing Class-Class Relationships Over Linked Open Data. - Atsuko Yamaguchi; Kouji Kozaki; Kai Lenz; Yasunori Yamamoto; Hiroshi Masuya; Norio Kobayashi (JIST, 2016)

SPARQL Builder: Constructing SPARQL Query by Traversing Class-Class Relationships for Life Science Databases. - Atsuko Yamaguchi; Kouji Kozaki; Kai Lenz; Yasunori Yamamoto; Hiroshi Masuya; Norio Kobayashi (JIST (Workshops & Posters), 2016)

Data Acquisition by Traversing Class-Class Relationships over the Linked Open Data. - Atsuko Yamaguchi; Kouji Kozaki; Kai Lenz; Yasunori Yamamoto; Hiroshi Masuya; Norio Kobayashi (ISWC (Posters & Demos), 2016)

SPARQL Query Construction with Monitoring Service for Endpoints. - Atsuko Yamaguchi; Yasunori Yamamoto; Kouji Kozaki; Kai Lenz; Hiroshi Masuya; Norio Kobayashi (SWAT4LS, 2016)

Efficient Construction of a New Ontology for Life Sciences by Sub-classifying Related Terms in the Japan Science, Technology Agency Thesaurus. - Tatsuya Kushida; Kouji Kozaki; Yuka Tateisi; Katsutaro Watanabe; Takeshi Masuda; Katsuji Matsumura; Takahiro Kawamura; Toshihisa Takagi (ICBO, 2017)

Construction of Linked Urban Problem Data with Causal Relations Using Crowdsourcing. - Shusaku Egami; Takahiro Kawamura; Kouji Kozaki; Akihiko Ohsuga (IIAI-AAI, 2017)

Linked Urban Open Data Including Social Problems' Causality and Their Costs. - Shusaku Egami; Takahiro Kawamura; Kouji Kozaki; Akihiko Ohsuga (JIST, 2017)

Refined JST Thesaurus Extended with Data from Other Open Life Science Data Sources. - Tatsuya Kushida; Yuka Tateisi; Takeshi Masuda; Katsutaro Watanabe; Katsuji Matsumura; Takahiro Kawamura; Kouji Kozaki; Toshihisa Takagi (JIST, 2017)

Semantic Graph Analysis for Federated LOD Surfing in Life Sciences. - Atsuko Yamaguchi; Kouji Kozaki; Yasunori Yamamoto; Hiroshi Masuya; Norio Kobayashi (JIST, 2017)

A Semi-Automatic Framework to Identify Abnormal States in EHR Narratives. - Xiaojun Ma; Takeshi Imai; Emiko Y. Shinohara; Ryota Sakurai; Kouji Kozaki; Kazuhiko Ohe (MedInfo, 2017)

GPS Trajectory Linked Open Data based on Open POI Information- Through an Experiment in ISWC2016-. - Kouji Kozaki; Teruaki Yokoyama; Yoshiaki Fukami (ISWC (Posters, Demos & Industry Tracks), 2017)

LOD Surfer API: Web API for LOD Surfing Using Class-Class Relationships in Life Sciences. - Atsuko Yamaguchi; Kouji Kozaki; Yasunori Yamamoto; Hiroshi Masuya; Norio Kobayashi (SWAT4LS, 2017)

Disease Compass- a navigation system for disease knowledge based on ontology and linked data techniques. - Kouji Kozaki; Yuki Yamagata; Riichiro Mizoguchi; Takeshi Imai; Kazuhiko Ohe (J. Biomed. Semant., 2017)

Inference of Functions, Roles, and Applications of Chemicals Using Linked Open Data and Ontologies. - Tatsuya Kushida; Kouji Kozaki; Takahiro Kawamura; Yuka Tateisi; Yasunori Yamamoto; Toshihisa Takagi (JIST, 2018)

Knowledge-based Identication of Emotional Status on Social Networks. - Julio Vizcarra; Kouji Kozaki; Miguel Torres Ruiz; Rolando Quintero (JIST (Workshops & Posters), 2018)

Content-based Visualization System For Sentiment Analysis On Social Networks. - Julio Vizcarra; Kouji Kozaki; Miguel Torres Ruiz; Rolando Quintero (JIST (Workshops & Posters), 2018)

Urban Problem LOD for Understanding the Problem Structure and Detecting Vicious Cycles. - Shusaku Egami; Takahiro Kawamura; Kouji Kozaki; Akihiko Ohsuga (ICSC, 2018)

Reconstruction of Hierarchical Structures in a Thesaurus-based Ontology through Curation by Domain Experts. - Tatsuya Kushida; Kouji Kozaki; Yasunori Yamamoto; Atsuko Yamaguchi; Takahiro Kawamura; Takako Nakagawa; Yuka Tateisi; Toshihisa Takagi (ICBO, 2019)

Report on the First Knowledge Graph Reasoning Challenge 2018. - Takahiro Kawamura; Shusaku Egami; Koutarou Tamura; Yasunori Hokazono; Takanori Ugai; Yusuke Koyanagi; Fumihito Nishino; Seiji Okajima; Katsuhiko Murakami; Kunihiko Takamatsu; Aoi Sugiura; Shun Shiramatsu; et al. (JIST, 2019)

Building Knowledge Graph Across Different Subdomains Using Interlinking Ontology for Biomedical Concepts. - Kouji Kozaki; Tatsuya Kushida; Yasunori Yamamoto; Toshihisa Takagi (JIST (2), 2019)

Violence Identification in Social Media. - Julio Vizcarra; Ken Fukuda; Kouji Kozaki (JIST, 2019)

Investigating Schema Definitions Using RDFS and OWL 2 for RDF Databases in Life Sciences. - Atsuko Yamaguchi; Tatsuya Kushida; Yasunori Yamamoto; Kouji Kozaki (JIST (2), 2019)

Report on the First Knowledge Graph Reasoning Challenge 2018 - Toward the eXplainable AI System. - Takahiro Kawamura; Shusaku Egami; Koutarou Tamura; Yasunori Hokazono; Takanori Ugai; Yusuke Koyanagi; Fumihito Nishino; Seiji Okajima; Katsuhiko Murakami; Kunihiko Takamatsu; Aoi Sugiura; Shun Shiramatsu; et al. (CoRR, 2019)

Special Issue on Semantic Technology. - Ryutaro Ichise; Stephen H. Muggleton; Kouji Kozaki; Freddy Lécué; Dongyan Zhao 001; Takahiro Kawamura (New Gener. Comput., 2019)

Interconnection of Biological Knowledge Using NikkajiRDF and Interlinking Ontology for Biological Concepts. - Tatsuya Kushida; Kouji Kozaki; Takahiro Kawamura; Yuka Tateisi; Yasunori Yamamoto; Toshihisa Takagi (New Gener. Comput., 2019)

A note on intelligent exploration of semantic data. - Dhavalkumar Thakker; Daniel Schwabe 001; Roberto García 001; Kouji Kozaki; Marco Brambilla 001; Vania Dimitrova (Semantic Web, 2019)

BioHackathon 2015: Semantics of data for life sciences and reproducible research. - Rutger A. Vos; Toshiaki Katayama; Hiroyuki Mishima; Shin Kawano; Shuichi Kawashima; Jin-Dong Kim; Yuki Moriya; Toshiaki Tokimatsu; Atsuko Yamaguchi; Yasunori Yamamoto; Hongyan Wu; Peter Amstutz; et al. (F1000Research, 2020)

Extracting Domain-specific Concepts from Large-scale Linked Open Data. - Satoshi Kume; Kouji Kozaki (IJCKG, 2021)

Knowledge-Based Sentiment Analysis and Visualization on Social Networks. - Julio Vizcarra; Kouji Kozaki; Miguel Torres Ruiz; Rolando Quintero (New Gener. Comput., 2021)

Contextualized Scene Knowledge Graphs for XAI Benchmarking. - Takahiro Kawamura; Shusaku Egami; Kyoumoto Matsushita; Takanori Ugai; Ken Fukuda; Kouji Kozaki (IJCKG, 2022)

Detecting Vicious Cycles in Urban Problem Knowledge Graph using Inference Rules. - Shusaku Egami; Takahiro Kawamura; Kouji Kozaki; Akihiko Ohsuga (Data Intell., 2022)

Datasets of Mystery Stories for Knowledge Graph Reasoning Challenge. - Kouji Kozaki; Shusaku Egami; Kyoumoto Matsushita; Takanori Ugai; Takahiro Kawamura; Ken Fukuda (ESWC Workshops, 2023)

A Fundamental Evaluation of Candidate Answers Generation for Question Answering Using Wikidata. - Ryoga Nakagawa; Kouji Kozaki (IJCKG (Workshop/Poster/Demo), 2023)

RDF-star2Vec: RDF-star Graph Embeddings for Data Mining. - Shusaku Egami; Takanori Ugai; Masateru Oota; Kyoumoto Matsushita; Takahiro Kawamura; Kouji Kozaki; Ken Fukuda (IEEE Access, 2023)

Synthetic Multimodal Dataset for Empowering Safety and Well-being in Home Environments. - Takanori Ugai; Shusaku Egami; Swe Nwe Nwe Htun; Kouji Kozaki; Takahiro Kawamura; Ken Fukuda (CoRR, 2024)

Zero-Shot Entailment Learning for Ontology-Based Biomedical Annotation Without Explicit Mentions. - Rumana Ferdous Munne; Noriki Nishida; Shanshan Liu; Narumi Tokunaga; Yuki Yamagata; Kouji Kozaki; Yuji Matsumoto 001 (COLING, 2025)

MA-COIR: Leveraging Semantic Search Index and Generative Models for Ontology-Driven Biomedical Concept Recognition. - Shanshan Liu; Noriki Nishida; Rumana Ferdous Munne; Narumi Tokunaga; Yuki Yamagata; Kouji Kozaki; Yuji Matsumoto 001 (CoRR, 2025)