International Conference

2017年度

  • R. Saga and T. Yamashita: Proposal of network visualization of customer expectation by using Web, ISAROB(2017)
  • R. Saga and T. Yamashita: Cluster-Based Edge Bundling based on a Line Graph, IVAPP(2017)
  • R. Saga, N. Ohkusa, T. Yamashita, and N. Maki: Visualization of Customer Expectation from Web Text using  Co-occurrence Graph and Auto-labeling in the Servies Market, IVAPP(2017)
  • A. Sakaguchi, S. Nohara, and R. Saga: Prediction of Evaluation Value from Product Reviews and  Explanation to Healthcare Products Using Network, IMECS(2017)

2016年度

  • Cheng, Mei-Hui Wang, S. Nohara, Kuan-Yi Wu, and R. Saga: FML-based Feature Similarity Assessment Agent for Japanese Taiwanese Langege Learning, WCCI(2016)
  • M. Ueda and R. Saga: Place name extraction and area identification in a sightseeing map, ACIS(2016)
  • R. Saga: Quantitative Evaluation for Edge Bundling Based on Structural Aesthetics, EUROvis2016, pp.17-19(2016)
  • T. Utou and R. Saga: Trend Analisis for Patent Network Visualization: ACIS(2016)
  • R. Saga: Quantitative Evaluation for Edge Bundling by Difference of Edge Lengths and Area Occupation, HCII(2016)
  • H. Sakai and R. Saga: Aspect Evaluation by using Overall Rating and Category Characteristics of Reviews, ICBIR(2016)

2015年度

  • R. Saga and N. Shoji: Factor analysis of investment judgment in crowdfunding using structural equation modeling, ACIS(2015)
  • R. Saga and R. Kunimoto: LDA-Based Path Model Construction Process for structure Equation Modeling, ISAROB(2015)

2014年度

  • Kunimoto and R. Saga: Purchase Factor Expression for Game Software Using Structural Equation Modeling with Topic Model in User’s Review Texts, International Conference on E-Education, E-Business, E-Management and E-Learning, pp.417-421(2015)
  • H. Kobayashi and R. Saga: Finiding Division Points for Time-Series Corpus Based on Topic Changes, HCI International, pp. 364-372( 2014)
  • R. Saga, H. Kobayashi and T. Miyamoto, H. Tsuji: Measurement Evaluation of Keyword Extraction Based on Topic Coverage, HCI International, pp. 224- 227 (2014)
  • R. Saga, and R. Kunimoto: LDA-Based Path Model Construction Process for Structure Equation Modeling, International Symposium on Artificial Life and Robot, pp. 208-211 (2015)
  • H. Kobayashi and R. Saga: Finding Division Points for Time-Series Corpus Based on the Sequential Probability Ratio Test, International Symposium on Artificial Life and Robot, pp. 182-185(2015)
  • R. Saga: Visualization of Comparison of Texts from Two Information Sources by Network Integration, International Conference on Knowledge, Information, and Creativity Support System, pp. 441-445(2014)
  • R. Kunimoto, H. Kobayashi and R. Saga: Factor Analysis for Game software Using Structural Equation Modeling with Hierarchical Latent Dirichlet Allocation in User’s Review Comments, International Conference on Knowledge in CD-ROM (2015)
  • Y. Takayama, R. Saga: Proposal of Chance Index in Co-occurrence Visualized Network, International Conference on Knowledge in CD-ROM (2015)
  • R. Saga: Network Visualization of Difference of Value in Use, International Conference of Business and Industrial Research, pp. 230-234 (2014)
  • T. Kaewkiriya, R. Saga, and H. Tsuji: Finding Path Generator Function for Planning Support of Students Based on Trajectory, ACIS(2014)

2013年度

  • R. Kunimoto and R. Saga: Integration of Path Models for Structural Equation Modeling by Use of Union Operation for Merging Multiple Viewpoints, ISCBI(2013)
  • R. Kunimoto and R. Saga: Path Model Integration Method for Structural Equation Modeling by OR and Probability Concepts, SMC(2013)
  • K. Thongchai, R. Saga, and H. Tsuji: Planning Support in Capability Growth Trajectory Mining, ACIS(2013)
  • S. Aoki, R. Saga, T. Ichinotsubo, W. Niu, and H. Tsuji: Dependency Extraction from Growth Trajectory Using Sequential Pattern, i-Know2013, No.3, pp.1-6(2013)
  • H. Shigeyoshi, K. Tamano, R. Saga, H. Tsuji, S. Inoue, and T. Ueno: Social Experiment on Advisory Recommender System for Energy-Saving, HIMI(2013)
  • H. Tsuji, R. Saga, A. Tiwana, and D. Albert: Trajectory Mining on Capability Space: Its Concept and Potential Application, HICCS(2013)
  • T. Kaewkiriya, R. Saga, and H. Tsuji: Transparent Digital Contents Sharing for Science Teachers, HIMI(2013)

2012年度

  • H. Tsuji, R. Saga, D. ALBERT and A. TIWANA: Trajectory Mining on Capability Space Its Concept and Potential Application, HICSS 46 – Hawaii International Conference on System Sciences(2012)(Accepted)
  • R. Saga: Proposal of Directed FACT-Graph Based on Association Rule, Proc. of Asian Conference on Information Systems (ACIS),pp.123-126(2012)
  • A. Vella, D. Castel, H. Tsuji and R. Saga: Bias Effect on Interative Spiral Conjoint Analysis, Proc. of Asian Conference on Information Systems (ACIS),pp.55-59(2012)
  • L. Issertial, H. Tsuji, R. Saga: Visualized Comparison for CFP Datasets by Structure Identification and Ontology, 6th ISSDM: 2012 International Conference on New Trends in Information Science, Service Science and Data Mining, pp.365-370(2012)
  • D. Castel, A. Vella, F. Wei, R. Saga and H. Tsuji: Diagnosis for Interactive Conjoint Analysis, 6th ISSDM: 2012 International Conference on New Trends in Information Science, Service Science and Data Mining, pp.371-376(2012)
  • R. Saga, and H. Tsuji: Comparison Analysis for Text Data by Integrating Two FACT-Graphs, KES IIMS 2012, pp.143-151(2012)
  • R. Saga, and H. Tsuji: Integrating FACT-Graph For Comparison Analysis Based on TF-IDF Weight, IADIS International Conference Information Systems 2012, pp.34-40 (11 March, 2012, Ramada Berlin Alexanderplatz, Berlin, Germany) (2012)
  • R. Saga, M. Letelier, N. Kaisaku, Y. Takayama, and H. Tsuji: Visualization Analysis of web access log of E-commerce site by Fact Graph with Sequential Probability Ratio Test, KES(2012)

2011年度

  • K. Kitami, R. Saga, and K. Matsumoto: Comparison analysis of video game purchase factors between Japanese and American consumers, 15th international Conference on Knowledge-Based and Intelligent Information & Engineering Systems (KES2011, Part III, LNAI6883), pp.285-294(2011)
  • R. Saga, S. Takamizawa, K. Kitami, H. Tsuji, and K. Matsumoto: Comparison analysis for text data by using FACT-Graph, HCI international 2011, pp.75-83 (14 July, 2011, Hilton Orlando Bonnet Creek, Orlando, USA)(2011)
  • K. Kitami, R. Saga, and K. Matsumoto: Verification of centrality to extract proper factors in model construction process by using creativity technique, HCI international 2011, pp.43-47 (9-14 Jul, 2011, Hilton Orlando Bonnet Creek , Orlando, USA)(2011)
  • K. Kitami, R. Saga, and K. Matsumoto: Validation for model construction process by using creativity method, IADIS international Conference Information Systems 2011, pp.362-364 (12 March, 2011, Hotel Palacio De Los Velada, Avila, Spain)(2011)
  • K. Kitami, R. Saga, and K. Matsumoto: Construction and analysis of purchase factor model by using creativity method, The Sixteenth international Symposium on Artificial Life and Robotics 2011 (AROB 16th ‘11), pp.695-698(2011)
  • K. Kitami, R. Saga, K. Matsumoto: Comparison Analysis of Video Game Purchase Factors between Japanese and American Consumers, Proc. of 15th Intl. Conf. on Knowledge-Based and Intelligent Information and Engineering Systems,pp.285-294(2011)
  • R. Saga, K. Okamoto, H. Tsuji, K. Matsumoto: Evaluating Recommender System using Multiagent-based Simulator, Proc. of 2011 Intl. Conf. on Data Engineering and Internet Technology (Bali, Indonesia), pp.947-950(2011)
  • R. Saga, T. Miyamoto, H. Tsuji, K. Matsumoto: Visualization of WebSite Usage with Consideration of Trend and Relationships, Proc. of 2011 Intl. Conf. on Data Engineering and Internet Technology (Bali, Indonesia), pp.947-950 (2011)
  • K. Kitami, R. Saga, K. Matsumoto: Validation for Model Construction Process by Using Creativity Method, Proc. of the IADIS Intl. Conf. Information Systems 2011 (Avila, Spain), pp.362-364(2011)
  • R. Saga, S. Takamizawa, H. Tsuji, K. Matsumoto: Application for Text-Based Comparison Analysis Using Frequency and Co-occurrence Trend-graph, Proc. of the IADIS Intl. Conf. Information Systems 2011 (Avila, Spain), pp.352-354 (2011)
  • H. Sugimura, R. Saga, K. Matsumoto: Identifying Authors of Text Based on Association Rules, Proc. of the IADIS Intl. Conf. Information Systems 2011 (Avila, Spain), pp.355-358(2011)
  • R. Saga, K. Okamoto, H. Tsuji and K. Matsumoto: Proposal of recommender system simulator based on small-world model, Proc. of Artificial Life and Robotics (AROB 16th ’11), pp.691-694 (2011)
  • K. Kitami, R. Saga, K. Matsumoto: Construction and Analysis of Purchase Factor Model by Using Creativity Method, Proc. of Intl. Symp. on Artificial Life and Robotics 2011 (Beppu, Japan), pp.695-698(2011)
  • F. Masruri, H. Tsuji and R. Saga: Visualized Preference Transition Network Based on Recency & Frequency, Proc. of Japan-Cambodia Joint Symposium on Information System and Communication Technology, pp.121-122,(2011)
  • R. Saga, K. Kitami, K. Matsumoto: Graphical Modeling by Creativity Method for Structural Equation Modeling, Proc. of Japan-Cambodia Joint Symp. on Information System and Communication Technology (Phnom Penh, Cambodia), pp.51-56(2011)

2010年度

  • K. Kitami and R. Saga: Causality Analysis for Best-Seller of Software Game by Regression and Structural Equation Modeling, 2010 IEEE International Conference on Systems, Man and Cybernetics (IEEE/SMC 2010), pp.1495-1500 (2010)
  • R. Saga, C. Sugaya, and K. Kitami: Extension of Hierarchical Information Acquirement by Association Rule from Semi-Structured Data, DMIN’10 – 6th international Conference on Data Mining (DMIN 2010), pp.370-374 (2010)
  • K. Kitami, R. Saga: Causality Analysis for Best-Seller of Software Game by Regression and Structural Equation Modeling, Proc. of 2010 IEEE Intl. Conf. on Systems, Man and Cybernetics (Istanbul, Turkey), pp.1495-1500(2010)
  • H. Sugimura, Y. Taniguchi, R. Saga, K. Matsumoto: Text Authorship Detection Using Decision Trees and Association Rules over N-Graph, Proc. of IADIS The European Conf. on Data Mining (Freiburg, Germany), pp.167-170(2010)
  • R. Saga, K. Okamoto, H. Tsuji, K. Matsumoto: Proposal of Recommender System based on Mediator’s Diversity, Proc. of International Association for Development of the Information Society, pp.150-154 (2010)
  • R. Saga, C. Sugaya, K. Kitami: Extension of Hierarchical Information Acquirement by Association Rule from Semi-Structured Data, Proc. of 6th Intl. Conf. on Data Mining (Las Vegas, USA), pp.370-374(2010)
  • Y. Hayashi, F. Masruri, R. Saga, H. Tsuji: Enhanced Visualization on Preference Transition for Sales Records, 8th IEEE International Conference on Industrial Informatics (INDIN 2010) , pp.361-366 (2010)
  • R. Saga, H. Tsuji, T. Miyamoto and K. Tabata: Development and Case Study of Trend Analysis Software Based on FACT-Graph, Proc. of Artificial Life and Robotics (AROB 15th ’10), pp.362-366 (2010)

2009年度

  • Z. Sheng, M. Sano, Y. Hayashi, H. Tsuji, R. Saga: Visualization study of the relationships between responses in choice-type questionnaire[C]. 2009 International Conference on Information Management, Innovation Management and Industrial Engineering (ICIII2009):pp.249-253 (2009)
  • Y. Hayashi, R. Saga, H. Tsuji: Visualizing Method based on Item Sales Records and its Experimentation, IEEE International Conference on Systems, Man & Cybernetics (IEEE/SMC 2009), pp.524-528(2009)
  • R. Saga, H. Tsuji, K. Tabata: Loopo: Integrated Text Miner for FactGraph-based Trend Analysis, HCI International 2009, Vol. 5618, pp. 192-200 (2009)
  • Y. Hayashi, R. Saga, H. Tsuji: Competition state Visualization Technique for Sales and its Application, The Twenty Tow International Conference on Industrial Engineering & Other Applications of Applied Intelligent Systems IEA/AIE conference, Vol. 214, pp. 335-340(2009)

2008年度

  • R. Saga, Y. Hayashi and H. Tsuji: Hotel Recommender System based on User’s Preference Transition, IEEE International Conference on Systems, Man & Cybernetics (IEEE/SMC 2008), pp.2437-2442 (2008)
  • M. Terachi, R. Saga, Z. Sheng, H. Tsuji: Visualized Technique for Trend Analysis of News Articles, The Twenty-First International Conference on Industrial Engineering & Other Applications of Applied Intelligent Systems IEA/AIE conference, Vol. 5027, pp. 659-668(2008)

2007年度

  • R. Saga, N. Okada, A. Kageyama, S. Aoki and H. Tsuji: RESTER2: Ontology based Reusable ToDo Synthesizer, IEEE International Conference on Systems, Man & Cybernetics (IEEE/SMC 2007), pp.214-219 (2007)
  • J. Noda, H. Nishihara, R. Saga, H. Tsuji: Project evaluation by e-Mail based Communication Pattern, Human-Computer Interaction (HCI) International, Vol. 4553, pp. 702-711(2007)
  • R. Saga, H. Tsuji: Building Weak Ties Network by X-means and Reachable Matrix, Human Computer Interaction (HCI) International (2007)

2006年度

  • M. Terachi, R. Saga, H. Tsuji: Trends Recognition in Journal Papers by Text Mining, IEEE International Conference on Systems, Man & Cybernetics (IEEE/SMC 2006), pp.4784-4789 (2006)
  • R. Saga, N. Okada, and H. Tsuji: Three-Layered Business Process Architecture for Workflow Cooperation, 11th IEEE International Conference on Emerging Technologies and Factory Automation (IEEE/ETFA-2005), pp.553-558 (2006)
  • H. Tsuji, R. Saga, J. NODA: Integrating organizational knowledge into search engine, 19th International Conference on Industrial, Engineering & Other Applications of Applied Intelligent Systems (IEA/AIE 06), pp.1-10 (2006)
  • A. Kageyama, R. Saga, N. Okada, H. Tsuji: ToDo List Reusing in Ad-hoc Group Activities, -SID 2006: Social Intelligence Design 2006, pp.7-14(2006)

2005年度

  • R. Saga, H. Tsuji: Collaborative Filtering versus Personal Log based Filtering: Experimental Comparison for Hotel Room Selection, The First International Congress of the International Federation for Systems Research (IFSR 2005), S2-3-2, pp.144-146(in Proceedings), pp.1-5 (In CD-ROM)(2005)
  • M. Nakano, R. Saga, H. Tsuji: Hotel Room Allocation for Sales Channel by Dynamic Programming, 10th IEEE International Conference on Emerging Technologies and Factory Automation (IEEE/ETFA-2005), pp.1095-1100 (2005)
  • H. Tsuji, A. Kageyama, R. Saga: RESTER: Reusable TODO Synthesizer, 11th International Conference on Human Computer Interaction (HCII2005), in Poster Session (2005)
  • N. Jugo, H. Nishihara, H. Tsuji, R. Saga: User Interface for Improving Precision and Recall in Full Text Retrieval, 11th International Conference on Human Computer Interaction (HCII2005), Vol. 3 – Human-Computer Interfaces: Concepts, New Ideas, Better Usability, and Applications, pp.1-10 (In CD-ROM)) (2005)
  • R. Saga, H. Tsuji, G. Jin, Y. Onitsuka, A. Kageyama: Shortcut Integrated Agent as Search Front, 11th International Conference on Human Computer Interaction(HCII2005) , Vol.-Poster, pp.1-5, (In CD-ROM) (2005)
  • R. Saga, H. Tsuji, J. Onoda: Agent System for Notifying Hotel Room Reservation Alternatives, 11th International Conference on Human Computer Interaction (HCII2005) , Vol. 5 – Emergent Application Domains in HCI, pp.1-10 (In CD-Rom) (2005)
  • R. Saga and H. Tsuji: Alternative Goods Recommender by Customer´s Context-Example for Business Hotel Room Reservation-, The Third International Conference on Active Media Technology, pp.331-334 (2005)

2004年度

  • H. Tsuji, R. Saga: Taming Search Engine for Knowledge Sharing, Social Intelligence Design 2005 (SID2005), pp.1-15 in CD-ROM (2005)
  • A. Koretsune, T. Konzo, R. Saga, H. Tsuji: SCM Simulator with Uncertain Parameters, IEEE International Conference on Systems, Man & Cybernetics (IEEE/SMC 2004), pp.4497-4503 (2004)

2003年度

  • T. Konzo, R. Saga, S. Aoki, H. Tsuji Embedding Policy and Capacity in Concurrent SCM Simulator, IEEE International Conference on Systems, Man & Cybernetics (IEEE/SMC 2003), pp.4779-4784 (2003)
  • R. Saga, T. Konzo, S. Aoki, H. Tsuji Framework of e-Marketplace for concurrent SCM Simulator, IEEE International Conference on Systems, Man & Cybernetics (IEEE/SMC 2003), pp.4785-4790 (2003)
  • H. Tsuji, T. Konzo, R. Saga: Distributed Object Based Simulator LOSIMOPU, IRMA (International Resource Management Associates) International Conference 2003, (Philadelphia, USA) (2003)