5 citations · 8 across the 12 of their papers we have counts for
12 papers
Extraction of Constituent Factors of Digestion Efficiency in Information Transfer by Media Composed of Texts and Images
Koike Hiroaki, Teruaki Hayashi
The development and spread of information and communication technologies have increased and diversified information. However, the increase in the volume and the selection of inform…
Feature Concepts for Data Federative Innovations
Yukio Ohsawa, Sae Kondo, Teruaki Hayashi
A feature concept, the essence of the data-federative innovation process, is presented as a model of the concept to be acquired from data. A feature concept may be a simple feature…
Collaborative Problem Solving on a Data Platform Kaggle
Teruaki Hayashi, Takumi Shimizu, Yoshiaki Fukami
Data exchange across different domains has gained much attention as a way of creating new businesses and improving the value of existing services. Data exchange ecosystem is develo…
Hierarchical entropy and domain interaction to understand the structure in an image
Nao Uehara, Teruaki Hayashi, Yukio Ohsawa
In this study, we devise a model that introduces two hierarchies into information entropy. The two hierarchies are the size of the region for which entropy is calculated and the si…
Effects of Interregional Travels and Vaccination in Infection Spreads Simulated by Lattice of SEIRS Circuits
Yukio Ohsawa, Teruaki Hayashi, Sae Kondo
The SEIRS model, an extension of the SEIR model for analyzing and predicting the spread of virus infection, was further extended to consider the movement of people across regions.…
Data Combination for Problem-solving: A Case of an Open Data Exchange Platform
Teruaki Hayashi, Hiroki Sakaji, Hiroyasu Matsushima +3
In recent years, rather than enclosing data within a single organization, exchanging and combining data from different domains has become an emerging practice. Many studies have di…
Data Requests and Scenarios for Data Design of Unobserved Events in Corona-related Confusion Using TEEDA
Teruaki Hayashi, Nao Uehara, Daisuke Hase +1
Due to the global violence of the novel coronavirus, various industries have been affected and the breakdown between systems has been apparent. To understand and overcome the pheno…
Modeling Stakeholder-centric Value Chain of Data to Understand Data Exchange Ecosystem
Teruaki Hayashi, Gensei Ishimura, Yukio Ohsawa
In recent years, the expectation that new businesses and economic value can be created by combining/exchanging data from different fields has risen. However, value creation by data…
Detecting and explaining changes in various assets' relationships in financial markets
Makoto Naraoka, Teruaki Hayashi, Takaaki Yoshino +3
We study the method for detecting relationship changes in financial markets and providing human-interpretable network visualization to support the decision-making of fund managers…
Variable-Based Network Analysis of Datasets on Data Exchange Platforms
Teruaki Hayashi, Yukio Ohsawa
Recently, data exchange platforms have emerged in the digital economy to enable better resource allocation in a data-driven society, which requires cross-organizational data collab…
Extracting and Validating Explanatory Word Archipelagoes using Dual Entropy
Yukio Ohsawa
The logical connectivity of text is represented by the connectivity of words that form archipelagoes. Here, each archipelago is a sequence of islands of the occurrences of a certai…
Tangled String for Multi-Scale Explanation of Contextual Shifts in Stock Market
Yukio Ohsawa, Teruaki Hayashi, Takaaki Yoshino
The original research question here is given by marketers in general, i.e., how to explain the changes in the desired timescale of the market. Tangled String, a sequence visualizat…