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Data Jacket (DJ) is a technique for sharing information about data and for considering the potential value of datasets, with the data itself hidden, by describing the summary of data in natural language. In DJs, variables are described by variable labels (VLs), which are the names/meanings of variables. In the previous study, the matrix-based method for inferring VLs in DJs whose VLs are unknown,...
With the development of data science, the market of data also plays a significant role in the data mining domain gradually. This paper focus on how to use a visualization method based on contour map to seek the relationship between Data Jackets in order to create an innovative chance for data transaction. The analysis of results by questionnaires can illustrate the feasibility of this visualization...
Public safety, especially the daily traffic accident is concerned by the public. Previous studies have already discussed accident reasons associated with accidents statistically. There is a method called Innovators Marketplace on Data Jackets created by Professor Ohsawa. This method is used to externalize the value of data via stakeholders' requirement communication. This paper applied the solution...
In recent years, the potential benefits of reusing and analyzing the massive quantities of data have been discussed among various stakeholders from diverse domains. In order to take advantage of results of data analyses, instead of forcing to open or share data, it is important to activate a Market of Data, where users select data which they want, negotiate with data owners, and get data at reasonable...
Word co-occurrence measures co-occurring strength between words in texts. Most of the previous measures use a pre-decided context window to define co-occurrence of words. This size is decided from experience, and it is fixed during the whole process of measure. However, this is not ideal because appropriate window size can be different even in two adjacent sentences of a text. This paper provides...
The Tangled String, a sequence visualization tool proposed, created, and considered in the Innovators Marketplace on Data Jackets, is here applied for the sequence of stock prices. Stocks of the top 10 weekly increase rates in the list of the first section of the Tokyo Stock Exchange, for 9 years, are analyzed and visualized by Tangled String. The results imply that a stock of increasing price should...
This paper shows a preliminary report regarding classification techniques based on argumentation theory in artificial intelligence. A classification problem is defined on a directed graph, i.e., An argumentation framework, where each node represents an argument and each edge an attack relation between connected arguments. A hypothesis space is defined by all possible argumentation consequences, i...
In order to acquire infrequent events as new ideas and evaluate the ideas quantitatively, it is necessary to know how people create and refine ideas and to model creating and refining process. In this paper, we focused on relations between thinking time and writing time in handwriting, and proposed to model the relation by externalization, classification, relation, transportation and systematization,...
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