{"title":"Analysis of economic activity using mobile phone GPS data and estimating impact of COVID-19","authors":"Yoshiyuki Suimon, Mikoto Yanai","doi":"10.1109/IIAI-AAI50415.2020.00145","DOIUrl":"https://doi.org/10.1109/IIAI-AAI50415.2020.00145","url":null,"abstract":"In order to understand what is happening in the underlying economy it is useful to be able to gain a picture of what people are doing. For example, when people go out on the weekend, they may do so in order to engage in some kind of economic activity. In this research, we measured the level of economic activity by gaining a macro picture of people's movements. Specifically, we used the location data (GPS data) of mobile phones owned by the customers of major Japanese mobile carrier au to measure changes in the movements of people in key urban areas, and to show the relationship between these changes and macroeconomic variables. Our results found a notable correlation between the number of visitors to Shinjuku area in Tokyo on weekends/holidays and GDP consumer spending and spending-related government statistics such as the Indices of Tertiary Industry Activity and the Current Survey of Commerce. In addition, in Japan, the spread of COVID-19 has had a marked impact on people's economic activity in 2020. In order to confirm the details of this change, we analyzed the weekly change in the number of visitors to some commercial area in Tokyo. As a result, we confirm that there has been a dramatic change in people's behavior since the middle of February, when people became more aware of COVID-19 in Japan.","PeriodicalId":188870,"journal":{"name":"2020 9th International Congress on Advanced Applied Informatics (IIAI-AAI)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114702950","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Multiple Perspective Caption Generation with Attention Mechanism","authors":"H. Yanagimoto, Maaki Shozu","doi":"10.1109/IIAI-AAI50415.2020.00031","DOIUrl":"https://doi.org/10.1109/IIAI-AAI50415.2020.00031","url":null,"abstract":"In caption generation, a caption generation system generates a caption, which describes the content of the image with natural language and needs to understand both an image and a text. So caption generation is an essential task in natural language processing and image processing. Many researchers recently pay attention to deep learning as a key technique to construct the caption generation system because deep learning can construct an intermediate representation, which is shared in both image processing and natural language processing. First, the system generates a feature from a given image with convolutional neural networks. Eventually, the system generates a word sequence, a caption, from the feature. It means that the system consists of two modules, the image processing module and the language model module and both of the modules are simultaneously trained with a training dataset. The deep learning based caption generation system is a blackbox system and it is difficult to collaborate with a human. So, we introduce attention mechanism in the caption generation system and we control caption generation by the attention weights. The usual caption generation systems can generate only a single caption from one image because the system can generate a caption from an image directly. The proposed system can generate some different captions form the same image because we can control the initial attention weights. Our results demonstrate how we collaborate with deep learning and the fact that the collaboration improves caption generation.","PeriodicalId":188870,"journal":{"name":"2020 9th International Congress on Advanced Applied Informatics (IIAI-AAI)","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127337746","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
K. Orimoto, Tomoko Tateyama, Masashi Honda, T. Miyamoto, S. Matsumoto
{"title":"Detection Character Regions and Comparison Features in Event flyer Images based on Machine Learning","authors":"K. Orimoto, Tomoko Tateyama, Masashi Honda, T. Miyamoto, S. Matsumoto","doi":"10.1109/IIAI-AAI50415.2020.00125","DOIUrl":"https://doi.org/10.1109/IIAI-AAI50415.2020.00125","url":null,"abstract":"Tame-map is a smartphone application that allows users to easily share regional events information within their daily lives by uploading digital flyer images on the web. Although there are a lot of event flyer images uploaded daily, these data have been organized manually. This manual work is hard and takes a huge time, so a system to automate the manual work has been required. An automatic processing method will support the organization, such as categorization, assigning keywords to each image. To develop a basis of automatic flyer images processing, this paper examines detection character region in event flyer images based on machine learning. Concretely, we compared the two features which are obtained vectors based on unsupervised/supervised leanings, such as k-means and SVM respectively.","PeriodicalId":188870,"journal":{"name":"2020 9th International Congress on Advanced Applied Informatics (IIAI-AAI)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125795118","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Y. Yaginuma, Hideaki Takahashi, Toshio Akimitsu, E. Nishina, M. Miwa
{"title":"Prediction of Retained ICT Skills After Face-to-Face ICT Training Course","authors":"Y. Yaginuma, Hideaki Takahashi, Toshio Akimitsu, E. Nishina, M. Miwa","doi":"10.1109/IIAI-AAI50415.2020.00160","DOIUrl":"https://doi.org/10.1109/IIAI-AAI50415.2020.00160","url":null,"abstract":"The Open University of Japan (OUJ) offeres an ICT skills training course for PC beginners since 2010. In this course, students’ ICT skills are measured using a five-point Likert scale at three time points: the beginning of the course (pre-course), the end of the course (post-course), and 0.5–3 years after attending the course (retention). In this paper, we report on the results of analysis of them. We first carried out clustering of retained ICT skills after attending the course using the k-means method. Then, the clusters of retained ICT skills are predicted from the pre-course and post-course skills using the support vector machine. The prediction accuracy of upper / lower clusters was about 80%, which will be the basis for the supports after attending the course.","PeriodicalId":188870,"journal":{"name":"2020 9th International Congress on Advanced Applied Informatics (IIAI-AAI)","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128161405","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Model Checking of Visual Scripts Created by UE4 Blueprints","authors":"Nao Igawa, Tomoyuki Yokogawa, Mami Takahashi, Kazutami Arimoto","doi":"10.1109/IIAI-AAI50415.2020.00107","DOIUrl":"https://doi.org/10.1109/IIAI-AAI50415.2020.00107","url":null,"abstract":"This paper proposes a method for applying model checking for video game logic written by Unreal Engine 4 Blueprints. We use a model-checker NuSMV to verify game logic. We provide a method for representing behavior written in blueprints as an input model for NuSMV. In Unreal Engine 4 Blueprints, game logic is described as node-graph style visual scripts. In the proposed method, inputs and outputs of nodes are modeled as variables in the model. The behaviors of the inputs and outputs are represented as transitions of the variables. We also conduct an application experiment of the proposed method for the game logic written by Unreal Engine 4 Blueprints.","PeriodicalId":188870,"journal":{"name":"2020 9th International Congress on Advanced Applied Informatics (IIAI-AAI)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121713613","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Disentangled Representations by Pseudo-Maximum Mutual Information for Interpreting Multi-Layered Neural Networks","authors":"R. Kamimura","doi":"10.1109/IIAI-AAI50415.2020.00094","DOIUrl":"https://doi.org/10.1109/IIAI-AAI50415.2020.00094","url":null,"abstract":"The present paper aims to propose a new type of information-theoretic method to disentangle complex information to have easily interpretable representations for multi-layered neural networks. By this disentanglement of complex information, multi-layered neural networks can be easily compressed to the simplest ones with simple, linear and individual relations between inputs and outputs. The principal idea is to train neural networks by supposing maximum mutual information states before learning, namely, pseudo-maximum information maximization. This pseudo-maximum information method can greatly facilitate the implementation of maximum information procedures. The method was applied to the well-known Boston housing data set for easily reproducing the present results. The experimental results confirmed that pseudo-mutual information can be used to increase actual mutual information. In addition, when mutual information increased, compressed weights from multi-layered neural networks became similar to the correlation coefficients between inputs and targets of original data set. Thus, the method could successfully show that the main inference mechanism can be based on linear and individual relations between inputs and outputs with additional and peripheral nonlinear relations.","PeriodicalId":188870,"journal":{"name":"2020 9th International Congress on Advanced Applied Informatics (IIAI-AAI)","volume":"142 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123415860","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Toward Clarifying Causes of Unusual Plasma Emissions Based on Support Vectors","authors":"Kendal Cousy, T. Hochin, H. Nakanishi, M. Shoji","doi":"10.1109/IIAI-AAI50415.2020.00018","DOIUrl":"https://doi.org/10.1109/IIAI-AAI50415.2020.00018","url":null,"abstract":"This paper tries to clarify the causes of unusual plasma emission. Unusual plasma emission is required to be predicted because a bright flash often observed inside of the machine may cause a failure of a superconducting plasma confinement device. The causes of unusual plasma emission are tried to be identified by taking the differences of the positive and the negative support vectors, which are used in the estimation through Support Vector Machine (SVM). This paper experimentally shows that the portion of unusual plasma emission can be identified.","PeriodicalId":188870,"journal":{"name":"2020 9th International Congress on Advanced Applied Informatics (IIAI-AAI)","volume":"80 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123573972","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
S. Kusakabe, Shunsuke Araki, Keiichi Katamine, M. Umeda
{"title":"Analyzing Motivation in Personal Software Process Education Course with a Qualitative Approach","authors":"S. Kusakabe, Shunsuke Araki, Keiichi Katamine, M. Umeda","doi":"10.1109/IIAI-AAI50415.2020.00066","DOIUrl":"https://doi.org/10.1109/IIAI-AAI50415.2020.00066","url":null,"abstract":"Kyushu Institute of Technology offers a class of the PSP (Personal Software Process) training course. One of the problems of the class is low completion rate and professors have been trying to resolve the situation. One of the trials is formalizing the motivation process of the PSP course trainees by using state transition modelling with the state, values of the factors regarding the trainee’s motivation and a set of stimuli from the course instructors and environment. Conceptually, instructors can decide effective scenarios for the trainees and develop effective learning environment with the assumption on the state and corresponding state transition function of the trainees. However, it is difficult to develop and analyze such scenarios and environment based on the actual motivation states inside trainees. We use a qualitative approach, GTA with systems engineering modeling in analyzing causal conditions, intervening conditions, action strategies for success scenarios and environment.","PeriodicalId":188870,"journal":{"name":"2020 9th International Congress on Advanced Applied Informatics (IIAI-AAI)","volume":"64 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128241127","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Tenzin Dhonden, N. Kien, Phenpimon Wilairatana, Pichit Ngamjarussrivichai, T. Konosu
{"title":"Impact of pharmaceutical promotional strategies on physicians’ prescription behavior in India","authors":"Tenzin Dhonden, N. Kien, Phenpimon Wilairatana, Pichit Ngamjarussrivichai, T. Konosu","doi":"10.1109/IIAI-AAI50415.2020.00134","DOIUrl":"https://doi.org/10.1109/IIAI-AAI50415.2020.00134","url":null,"abstract":"This study focuses on the impact of the promotional strategies used by the pharmaceutical industry on physician’s prescription behavior. This research was mainly carried out through a detailed literature review of past research and self-administered questionnaires. These questionnaires were electronically released and included data from a diverse group of medical doctors. Based on past research and theoretical underpinning, twenty different factors were categorized into four different promotional strategies. Responses to this study were marked on a five-point Likert scale and the relative importance index (RII) was used in order to rank the significant factors of promotional strategies. The study analysis showed that the majority of physicians agreed that the promotional strategies used by pharmaceutical companies impacted their prescription behavior patterns. The study also revealed that rapport, quality of a product and invitations to continuous medical education (CME) conferences speaker are the main factors shaping the prescription behavior of doctors.","PeriodicalId":188870,"journal":{"name":"2020 9th International Congress on Advanced Applied Informatics (IIAI-AAI)","volume":"21 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120942753","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Remote Articulation Test System for Supporting Special Education Classes for Language-disabled Children","authors":"Ikuyo Masuda-Katsuse, Yuiko Hirashima","doi":"10.1109/IIAI-AAI50415.2020.00034","DOIUrl":"https://doi.org/10.1109/IIAI-AAI50415.2020.00034","url":null,"abstract":"We developed a remote articulation test system to support special education classes for language-disabled children. We compared the diagnostic performances of remote articulation test sessions using our system and face-to-face test sessions or remote test sessions using an existing web video system. In the experiment, an external expert and teachers performed articulation tests on the children in a special education class. They also assessed their diagnostic confidence for each phoneme. Their diagnosis results were sufficiently consistent between the face-to-face and remote sessions and among the inspectors. The diagnostic confidence of the remote test using our system was significantly higher than the face-to-face session as well as the session using the existing web video system. In addition, our system was evaluated as having greater usability as a remote articulation system than the existing web video system.","PeriodicalId":188870,"journal":{"name":"2020 9th International Congress on Advanced Applied Informatics (IIAI-AAI)","volume":"153 5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120944487","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}