Sachio Hirokawa

Orcid: 0000-0002-8050-1109

According to our database1, Sachio Hirokawa authored at least 159 papers between 1985 and 2020.

Collaborative distances:
  • Dijkstra number2 of four.
  • Erdős number3 of four.

Timeline

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On csauthors.net:

Bibliography

2020
Prediction of Category of Scientific Article by Graph Convolution.
Proceedings of the 9th International Congress on Advanced Applied Informatics, 2020

2019
Ties Between Mined Structural Patterns in Program and Their Identifier Names.
Proceedings of the Integrated Uncertainty in Knowledge Modelling and Decision Making, 2019

Location does not always determine sudden braking.
Proceedings of the 2019 IEEE Intelligent Transportation Systems Conference, 2019

Predict the Next Location From Trajectory Based on Spatiotemporal Sequence.
Proceedings of the 8th International Congress on Advanced Applied Informatics, 2019

Extracting Irregular Datasets in University Admission Statistics using Text Mining and Benford's Law.
Proceedings of the 8th International Congress on Advanced Applied Informatics, 2019

Significance of Low-Frequent Words in Concept Describing Document.
Proceedings of the 8th International Congress on Advanced Applied Informatics, 2019

Text Mining and Logic Model for University Midterm Plans.
Proceedings of the 8th International Congress on Advanced Applied Informatics, 2019

Machine Learning and Visualization of Sudden Braking using Probe Data.
Proceedings of the 8th International Congress on Advanced Applied Informatics, 2019

Quantitive Analysis of Important Attributes to Attract International Conventions.
Proceedings of the 8th International Congress on Advanced Applied Informatics, 2019

Does Crime Activity Report Reveal Regional Characteristics?
Proceedings of the 13th International Conference on Ubiquitous Information Management and Communication, 2019

Evaluation Index to Find Relevant Papers: Improvement of Focused Citation Count.
Proceedings of the Human Interface and the Management of Information. Visual Information and Knowledge Management, 2019

2018
An Automatic Method to Extract Online Foreign Language Learner Writing Error Characteristics.
Int. J. Distance Educ. Technol., 2018

Attribute-based quality classification of academic papers.
Artif. Life Robotics, 2018

Is SVM+FS Better to Satisfy Decision by Majority?
Proceedings of the Recent Advances on Soft Computing and Data Mining, 2018

User Behavior Analysis of Location-Based Social Network.
Proceedings of the 7th International Congress on Advanced Applied Informatics, 2018

Automated Evaluation of Students Comments Regarding Correct Concepts and Misconceptions of Convex Lenses.
Proceedings of the 7th International Congress on Advanced Applied Informatics, 2018

Identification of Unnatural Subsets in Statistical Data.
Proceedings of the 7th International Congress on Advanced Applied Informatics, 2018

Quality Assurance in Education through the Diploma Policy and President's Message - An Analysis Focused on Local Community.
Proceedings of the 7th International Congress on Advanced Applied Informatics, 2018

Key attribute for predicting student academic performance.
Proceedings of the 10th International Conference on Education Technology and Computers, 2018

2017
LTDE: A Layout Tree Based Approach for Deep Page Data Extraction.
IEICE Trans. Inf. Syst., 2017

Personalized Movie Recommendation System Based on Support Vector Machine and Improved Particle Swarm Optimization.
IEICE Trans. Inf. Syst., 2017

Machine learning is better than human to satisfy decision by majority.
Proceedings of the International Conference on Web Intelligence, 2017

Graph Clustering System for Text-Based Records in a Clinical Pathway.
Proceedings of the MEDINFO 2017: Precision Healthcare through Informatics, 2017

Cluster analysis of scientific citation context.
Proceedings of the 19th International Conference on Information Integration and Web-based Applications & Services, 2017

A Point-of-Interest Recommendation Method Using Location Similarity.
Proceedings of the 6th IIAI International Congress on Advanced Applied Informatics, 2017

An Analysis of Characteristics of Student-Athletes from Questionnaire by SVM.
Proceedings of the 6th IIAI International Congress on Advanced Applied Informatics, 2017

Who is the Last Author of Your Paper?
Proceedings of the 6th IIAI International Congress on Advanced Applied Informatics, 2017

A Multi-model SVR Approach to Estimating the CEFR Proficiency Level of Grammar Item Features.
Proceedings of the 6th IIAI International Congress on Advanced Applied Informatics, 2017

Finding Key Integer Values in Many Features for Learners' Academic Performance Prediction.
Proceedings of the 9th International Conference on Education Technology and Computers, 2017

Predicting Learning Result of Learner in E-learning Course with Feature Selection Using SVM.
Proceedings of the 9th International Conference on Education Technology and Computers, 2017

Classification of Imbalanced Documents by Feature Selection.
Proceedings of the International Conference on Compute and Data Analysis, 2017

Analysis of the Quality of Academic Papers by the Words in Abstracts.
Proceedings of the Human Interface and the Management of Information: Supporting Learning, Decision-Making and Collaboration, 2017

2016
Automated Duplicate Bug Report Detection Using Multi-Factor Analysis.
IEICE Trans. Inf. Syst., 2016

Shilling Attack Detection in Recommender Systems via Selecting Patterns Analysis.
IEICE Trans. Inf. Syst., 2016

Learning Activity Features of High Performance Students.
Proceedings of the First International Workshop on Learning Analytics Across Physical and Digital Spaces (CrossLAK 2016) co-located with 6th International Conference on Learning Analytics & Knowledge (LAK 2016), 2016

Difficulty of words and their ambiguity estimated from the result of word sense disambiguation.
Proceedings of the 11th International Conference on Knowledge, 2016

Standard measure and SVM measure for feature selection and their performance effect for text classification.
Proceedings of the 18th International Conference on Information Integration and Web-based Applications and Services, 2016

A Restaurant Recommender System Based on User Preference and Location in Mobile Environment.
Proceedings of the 5th IIAI International Congress on Advanced Applied Informatics, 2016

Bibliometric Search with Focused Citation Ratios.
Proceedings of the 5th IIAI International Congress on Advanced Applied Informatics, 2016

Feature Words of Moves in Scientific Abstracts.
Proceedings of the 5th IIAI International Congress on Advanced Applied Informatics, 2016

Automatic Extraction and Prediction of Word Order Errors from Language Learning SNS.
Proceedings of the 5th IIAI International Congress on Advanced Applied Informatics, 2016

Classification of Speaking Proficiency Level by Machine Learning and Feature Selection.
Proceedings of the Emerging Technologies for Education - First International Symposium, 2016

A Visual Citation Search Engine.
Proceedings of the Human Interface and the Management of Information: Information, Design and Interaction, 2016

Support Vector Mind Map of Wine Speak.
Proceedings of the Human Interface and the Management of Information: Information, Design and Interaction, 2016

Prediction of Key Patient Outcome from Sentence and Word of Medical Text Records.
Proceedings of the Clinical Natural Language Processing Workshop, 2016

2015
Extraction of Tourism Objects from Blogs.
Proceedings of the Tourism Informatics - Towards Novel Knowledge Based Approaches, 2015

Discovery of Implicit Feature Words of Place Name.
Proceedings of the Tourism Informatics - Towards Novel Knowledge Based Approaches, 2015

A Predictive Model to Evaluate Student Performance.
J. Inf. Process., 2015

Dynamic Macro-Based Heuristic Planning through Action Relationship Analysis.
IEICE Trans. Inf. Syst., 2015

Power Law and Entropy.
CoRR, 2015

Temporal Relation Extraction in Outcome Variances of Clinical Pathways.
Proceedings of the MEDINFO 2015: eHealth-enabled Health, 2015

Journal Impact Factor Revised with Focused View.
Proceedings of the Intelligent Decision Technologies, 2015

Visualization of Key Factor Relation in Clinical Pathway.
Proceedings of the 19th International Conference in Knowledge Based and Intelligent Information and Engineering Systems, 2015

Unique Links as Weak Ties.
Proceedings of the IIAI 4th International Congress on Advanced Applied Informatics, 2015

Sentiment Analysis of Wine Aroma.
Proceedings of the IIAI 4th International Congress on Advanced Applied Informatics, 2015

Focused Citation Count: A Combined Measure of Relevancy and Quality.
Proceedings of the IIAI 4th International Congress on Advanced Applied Informatics, 2015

Vector Similarity of Related Words in the Japanese Word Net.
Proceedings of the IIAI 4th International Congress on Advanced Applied Informatics, 2015

Correlation between an Entropy Based Measure and English Language Learner Proficiency.
Proceedings of the IIAI 4th International Congress on Advanced Applied Informatics, 2015

Prediction of Learner Native Language by Writing Error Pattern.
Proceedings of the Learning and Collaboration Technologies, 2015

Predicting and Visualizing Wine Characteristics Through Analysis of Tasting Notes from Viewpoints.
Proceedings of the HCI International 2015 - Posters' Extended Abstracts, 2015

2014
Classification of English language learner writing errors using a parallel corpus with SVM.
Int. J. Knowl. Web Intell., 2014

A Web Page Segmentation Approach Using Visual Semantics.
IEICE Trans. Inf. Syst., 2014

Real time text-based feedback systems from frequency-based feedback to mindmap feedback in foreign language teaching.
Proceedings of the 2014 IEEE International Conference on Systems, Man, and Cybernetics, 2014

Non-Topical Classification of Healthcare Information on the Web.
Proceedings of the Smart Digital Futures 2014, 2014

A Hybrid Trust Degree Model in Social Network for Recommender System.
Proceedings of the IIAI 3rd International Conference on Advanced Applied Informatics, 2014

Construction of Dominant Factor Presumption Model for Postoperative Hospital Days from Operation Records.
Proceedings of the IIAI 3rd International Conference on Advanced Applied Informatics, 2014

Comments Data Mining for Evaluating Student's Performance.
Proceedings of the IIAI 3rd International Conference on Advanced Applied Informatics, 2014

Implementation and Evaluation of Real Time Qualitative Feedback Systems in a Foreign Language Presentation Course.
Proceedings of the IIAI 3rd International Conference on Advanced Applied Informatics, 2014

Discovery of Implicit Feature Words of Place Name.
Proceedings of the IIAI 3rd International Conference on Advanced Applied Informatics, 2014

Detection of Misplacement of Synonyms in the Japanese WordNet.
Proceedings of the IIAI 3rd International Conference on Advanced Applied Informatics, 2014

Classification and Clustering English Writing Errors Based on Native Language.
Proceedings of the IIAI 3rd International Conference on Advanced Applied Informatics, 2014

Prediction of Students' Grades Based on Free-Style Comments Data.
Proceedings of the Advances in Web-Based Learning - ICWL 2014, 2014

Learning Winespeak from Mind Map of Wine Blogs.
Proceedings of the Human Interface and the Management of Information. Information and Knowledge in Applications and Services, 2014

Predicting students' grades based on free style comments data by artificial neural network.
Proceedings of the IEEE Frontiers in Education Conference, 2014

Efficiency of LSA and K-means in Predicting Students' Academic Performance Based on Their Comments Data.
Proceedings of the CSEDU 2014, 2014

Chinese tag analysis for foreign movie contents.
Proceedings of the 2014 IEEE/ACIS 13th International Conference on Computer and Information Science, 2014

2013
Research Trends with Cross Tabulation Search Engine.
Int. J. Distance Educ. Technol., 2013

An Automated Method to Generate e-Learning Quizzes from Online Language Learner Writing.
Int. J. Distance Educ. Technol., 2013

Learning by Searching: A Learning Environment that Provides Searching and Analysis Facilities for Supporting Trend Analysis Activities.
J. Educ. Technol. Soc., 2013

Automatic generation of tourism quiz using blogs.
Artif. Life Robotics, 2013

Correlation of grade prediction performance and validity of self-evaluation comments.
Proceedings of the 14th Annual ACM SIGITE Conference on Information Technology Education, 2013

Shifting Concepts to Their Associative Concepts via Bridges.
Proceedings of the Machine Learning and Data Mining in Pattern Recognition, 2013

Analysis of Opinions from Questionnaire Surveys of Farming Candidates using Cross Tabulation System.
Proceedings of the Intelligent Interactive Multimedia Systems and Services, 2013

Intelligent Computer Classification of English Writing Errors.
Proceedings of the Intelligent Interactive Multimedia Systems and Services, 2013

Proposal of Seam Degree and Content Similarity for Web Page Segmentation.
Proceedings of the 2013 Second IIAI International Conference on Advanced Applied Informatics, 2013

Build a Search Engine to Support Doing Research Surveys on SNS.
Proceedings of the 2013 Second IIAI International Conference on Advanced Applied Informatics, 2013

Proposal of a Matching System for Companies and Researchers Using Patents and Scientific Papers.
Proceedings of the 2013 Second IIAI International Conference on Advanced Applied Informatics, 2013

Evaluation of Tourism Resources Extraction Based on Japanese Dependency Analysis.
Proceedings of the 2013 Second IIAI International Conference on Advanced Applied Informatics, 2013

Prediction of Growth Rate of Operating Income Using Securities Reports.
Proceedings of the 2013 Second IIAI International Conference on Advanced Applied Informatics, 2013

Keywords Frequency Trend Analysis of Online Novels.
Proceedings of the 2013 Second IIAI International Conference on Advanced Applied Informatics, 2013

Automated Evaluation of Student Comments on Their Learning Behavior.
Proceedings of the Advances in Web-Based Learning - ICWL 2013, 2013

Layout-tree-based approach for identifying visually similar blocks in a web page.
Proceedings of the 2013 IEEE/ACIS 12th International Conference on Computer and Information Science, 2013

A investigation of opinions and demands of new farming applicants of Japan using concept graph in the questionnaire survey.
Proceedings of the 2013 IEEE/ACIS 12th International Conference on Computer and Information Science, 2013

2012
Analysing Research Trends of Mobile Learning with the Milky Way.
Proceedings of the Seventh IEEE International Conference on Wireless, 2012

Extraction of Feature Words with the Same Generality Level as Query using Restricted Bootstrapping.
Proceedings of the 14th IEEE International Conference on Commerce and Enterprise Computing, 2012

Extraction of Hints and Advice from Hotel Reviews for Improving Small Hotel Management.
Proceedings of the 14th IEEE International Conference on Commerce and Enterprise Computing, 2012

Feature words that classify problem sentence in scientific article.
Proceedings of the 14th International Conference on Information Integration and Web-based Applications & Services, IIWAS '12, Bali, Indonesia, 2012

Extraction of Relevant Snippets from Web Pages Using Hybrid Features.
Proceedings of the IIAI International Conference on Advanced Applied Informatics, 2012

Mistake Discovery and Generation of Exercises Automaticity in Context.
Proceedings of the IIAI International Conference on Advanced Applied Informatics, 2012

Search Engine Focused on Multiple Features of Scientific Articles.
Proceedings of the IIAI International Conference on Advanced Applied Informatics, 2012

Near Friends Communication Encouragement System Using NFC and SNS.
Proceedings of the IIAI International Conference on Advanced Applied Informatics, 2012

Extraction of Tourist Behavior Contexts from Blog by Verbs and Their Objects.
Proceedings of the IIAI International Conference on Advanced Applied Informatics, 2012

A "Milky Way Research Trend" System for Survey of Scientific Literature.
Proceedings of the New Horizons in Web Based Learning, 2012

Introducing faceted views in diversity of online novels.
Proceedings of the Seventh International Conference on Digital Information Management, 2012

Extraction of relevant components using shallow structure of HTML documents.
Proceedings of the 9th International Conference on Fuzzy Systems and Knowledge Discovery, 2012

Descriminant Words for Problems in Scientific Articles.
Proceedings of the 2012 IEEE/ACIS 11th International Conference on Computer and Information Science, Shanghai, China, May 30, 2012

Feature Extraction Using Restricted Bootstrapping.
Proceedings of the 2012 IEEE/ACIS 11th International Conference on Computer and Information Science, Shanghai, China, May 30, 2012

2011
Search and Analysis of Bankruptcy Cause by Classification Network.
Proceedings of the Model and Data Engineering - First International Conference, 2011

Finding Top-N Chance Patterns with KeyGraph $^{\tiny \textregistered}$ -Based Importance.
Proceedings of the Knowlege-Based and Intelligent Information and Engineering Systems, 2011

Building a Search Engine for Scientific Projects Survey.
Proceedings of the 2011 IEEE International Conference on Internet of Things (iThings) & 4th IEEE International Conference on Cyber, 2011

Component search engine using tree-view interface for tourist blogs.
Proceedings of the 3rd International Conference on Awareness Science and Technology, 2011

Classification Network of tourism information A smart phone-based system for supporting "Petit Trips".
Proceedings of the 3rd International Conference on Awareness Science and Technology, 2011

Visualization of tourism information using WordNet.
Proceedings of the 3rd International Conference on Awareness Science and Technology, 2011

Text mining of bankruptcy information using formal concept analysis.
Proceedings of the 3rd International Conference on Awareness Science and Technology, 2011

Evaluation of Link System between Repository and Researcher Database.
Proceedings of the Digital Libraries: For Cultural Heritage, Knowledge Dissemination, and Future Creation, 2011

Component-based search engine for blogs.
Proceedings of the FUZZ-IEEE 2011, 2011

A Progressive Data Warehouse of Institutional Research with Web API and Mashup Visualization.
Proceedings of the CSEDU 2011, 2011

2010
Formal Concept Analysis of Medical Incident Reports.
Proceedings of the Knowledge-Based and Intelligent Information and Engineering Systems, 2010

2009
Time Series Analysis of R&D Team Using Patent Information.
Proceedings of the Knowledge-Based and Intelligent Information and Engineering Systems, 2009

2008
Structural Analysis of R & D Division from Patent Documents.
Proceedings of the 2008 IEEE International Conference on e-Business Engineering, 2008

Dynamic Thesaurus Construction from English-Japanese Dictionary.
Proceedings of the Second International Conference on Complex, 2008

2007
Links and Cycles of Web Databases.
Proceedings of the 4th Italian Semantic Web Workshop, Dipartimento di Informatica - Universita' degli Studi di Bari, 2007

Multiple Viewed Search Engine for an e-Journal - A Case Study on Zoological Science.
Proceedings of the Human-Computer Interaction. HCI Applications and Services, 2007

2006
Functional Composition of Web Databases.
Proceedings of the Digital Libraries: Achievements, 2006

2005
An Efficient Mapping for Computing the Score of String Matching.
J. Autom. Lang. Comb., 2005

An Approach to Analyzing Correlation between Songs/Artists Using iTMS Playlists.
Proceedings of the 2005 International Conference on Computational Intelligence for Modelling Control and Automation (CIMCA 2005), 2005

2004
Testbed for information extraction from deep web.
Proceedings of the 13th international conference on World Wide Web, 2004

2003
An Efficient Mapping for Score of String Matching.
Proceedings of the Prague Stringology Conference 2003, Prague, Czech Republic, 2003

Extraction of Tag Tree Patterns with Contractible Variables from Irregular Semistructured Data.
Proceedings of the Advances in Knowledge Discovery and Data Mining, 2003

Expressive Power of Tree and String Based Wrappers.
Proceedings of IJCAI-03 Workshop on Information Integration on the Web (IIWeb-03), 2003

Semi-Automatic Construction of Metadata from a Series of Web Documents.
Proceedings of the AI 2003: Advances in Artificial Intelligence, 2003

2002
Visualization and Analysis of Web Graphs.
Proceedings of the Progress in Discovery Science, 2002

Automatic Wrapper Generation for Multilingual Web Resources.
Proceedings of the Discovery Science, 5th International Conference, 2002

2001
Parallel Reduction in Type Free lambda/mu-Calculus.
Proceedings of the Computing: The Australasian Theory Symposium, 2001

Generation of Navigation Script from Log and Link.
Proceedings of WebNet 2001, 2001

SCOOP: A Record Extractor without Knowledge on Input.
Proceedings of the Discovery Science, 4th International Conference, DS 2001, Washington, 2001

Eliminating Useless Parts in Semi-structured Documents Using Alternation Counts.
Proceedings of the Discovery Science, 4th International Conference, DS 2001, Washington, 2001

2000
A Lambda Proof of The P-W Theorem.
J. Symb. Log., 2000

Long Normal Form Proof Search and Counter-Model Generation.
Proceedings of the Workshop on Type-Theoretic Languages: Proof Search and Semantics 2000, 2000

IntelligentBox: Its Aspects as a Rapid Construction System for Interactive 3D Games.
Proceedings of the 1st International Conference on Intelligent Games and Simulation (GAME-ON 2000), 2000

Extraction Positive and Negative Keywords for Web Communities.
Proceedings of the Discovery Science, 2000

1999
GUI for Geometric Inference Engine on Internet.
Proceedings of WebNet 99, 1999

Developing a Knowledge Network of URLs.
Proceedings of the Discovery Science, 1999

1998
Infiniteness of Proof(alpha) is Polynomial-Space Complete.
Theor. Comput. Sci., 1998

Living with ZK-an approach towards communication with analogue messages.
Proceedings of the Knowledge-Based Intelligent Electronic Systems, 1998

KN on ZK - Knowledge Network on Network Note Pad ZK.
Proceedings of the Discovery Science, 1998

1996
A reduction rule for Peirce formula.
Stud Logica, 1996

The proofs of alpha -> alpha in P-W.
J. Symb. Log., 1996

Normal Proofs and Their Grammar.
Inf. Comput., 1996

1993
Principal Types of BCK-lambda-Terms.
Theor. Comput. Sci., 1993

The Relevance Graph of a BCK-Formula.
J. Log. Comput., 1993

The Number of Proofs for a BCK-Formula.
J. Symb. Log., 1993

1992
Converse Principal Type-Scheme Theorem in Lambda Calculus.
Stud Logica, 1992

Balanced Formulas, BCK-Minimal Formulas and Their Proofs.
Proceedings of the Logical Foundations of Computer Science, 1992

1991
Prinipal Type Assignment to Lambda Terms.
Int. J. Found. Comput. Sci., 1991

Principal Type-Schemes of BCI-Lambda-Terms.
Proceedings of the Theoretical Aspects of Computer Software, 1991

BCK-Formulas Having Unique Proofs.
Proceedings of the Category Theory and Computer Science, 1991

1988
One-Step Recurrent Terms in lambda-beta-Calculus.
Theor. Comput. Sci., 1988

1985
Complexity of the Combinator Reduction Machine.
Theor. Comput. Sci., 1985


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