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Inferring Long-term User Property based on Users
- In IJCAI
, 2007
"... Recent development of location technologies en-ables us to obtain the location history of users. This paper proposes a new method to infer users ’ long-term properties from their respective location histo-ries. Counting the instances of sensor detection for every user, we can obtain a sensor-user ma ..."
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Cited by 15 (1 self)
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Recent development of location technologies en-ables us to obtain the location history of users. This paper proposes a new method to infer users ’ long-term properties from their respective location histo-ries. Counting the instances of sensor detection for every user, we can obtain a sensor-user matrix. Af-ter generating features from the matrix, a machine learning approach is taken to automatically classify users into different categories for each user prop-erty. Inspired by information retrieval research, the problem to infer user properties is reduced to a text categorization problem. We compare weightings of several features and also propose sensor weight-ing. Our algorithms are evaluated using experimen-tal location data in an office environment. 1
Mining social network of conference participants from the web
- Proceedings of the International Conference on Web Intelligence
, 2003
"... In a ubiquitous computing environment, it is desirable to provide a user with information depending on a user’s situation, such as time, location, user behavior, and social context. At conventions, such as academic conferences and exhibitions, where participants must register in advance, the social ..."
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Cited by 8 (0 self)
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In a ubiquitous computing environment, it is desirable to provide a user with information depending on a user’s situation, such as time, location, user behavior, and social context. At conventions, such as academic conferences and exhibitions, where participants must register in advance, the social context of participants can be extracted from the Web using their names and affiliations without asking the partic-ipants many questions. In this paper, we attempt to extract the social network of participants from the Web, where a node represents a participant and an edge represents the relationship of two participants. Each edge is added using the number of pages retrieved by a search engine which in-clude both participants names. Moreover, each edge has a label such as “co-authors ” and “members of the same project ” by applying classification rules to the page con-tent. We show an example of the extracted network and make a preliminery evaluation. This network can be used in many information services, such as finding an appropri-ate introducer or negotiater, and who one should talk to in order to efficiently expand his/her network. 1.
Social Network Extraction of Conference Participants
- In Proceedings of 12th International Conference on World Wide WebWWW’03
, 2003
"... ABSTRACT In a ubiquitous computing environment, it is desirable to provide a user with information depending on a user's situation, such as time, location, user behavior, and social context. At conventions, such as academic conferences and exhibitions, where participants must register in advan ..."
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Cited by 3 (0 self)
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ABSTRACT In a ubiquitous computing environment, it is desirable to provide a user with information depending on a user's situation, such as time, location, user behavior, and social context. At conventions, such as academic conferences and exhibitions, where participants must register in advance, the social context of participants can be extracted from the Web using their names and affiliations without asking them many questions. In our study, we attempt to extract the social network of participants from the Web, where a node represents a participant and an edge represents the relationship of two participants. The network shows the position of each participant and some participant clusters. Furthermore, this network can be used in many services, such as finding an appropriate person to introduce or negotiate with someone, and who one should talk to in order to expand his/her network efficiently.
Communications Technique
"... Abstract:- Optical wireless communications system with a corner-reflecting terminal and a distance image camera is proposed for location-based information support. By using the corner-reflecting terminal and the distance image camera, the user location can be tracked and detected, and the distance f ..."
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Cited by 2 (0 self)
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Abstract:- Optical wireless communications system with a corner-reflecting terminal and a distance image camera is proposed for location-based information support. By using the corner-reflecting terminal and the distance image camera, the user location can be tracked and detected, and the distance from the camera to the user who is tracked can be obtained real-timely. Therefore, the information support of users can be implemented based only on their physical locations and without the private data such as an address or ID number. We also performed several experiments based on the proposed system and method, and their effectiveness is demonstrated in multi-terminal location detection and indoor data communications.
Towards LuxTrace: Using Solar Cells to Measure Distance Indoors
, 2005
"... Navigation for and tracking of humans within a building usually implies significant infrastructure investment and devices are usually too high in weight and volume to be integrated into garments. We propose a system that relies on existing infrastructure (so requires little infrastructure investme ..."
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Cited by 2 (0 self)
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Navigation for and tracking of humans within a building usually implies significant infrastructure investment and devices are usually too high in weight and volume to be integrated into garments. We propose a system that relies on existing infrastructure (so requires little infrastructure investment) and is based on a sensor that is low cost, low weight, low volume and can be manufactured to have similar characteristics to everyday clothing (flexible, range of colours). This proposed solution is based on solar modules. This paper investigates their theoretical and practical characteristics in a simplified scenario. Two models based on theory and on experimental results (empirical model) are developed and validated. First distance estimations indicate that an empirical model for a particular scenario achieves an accuracy of 18cm with a confidence of 83%.
Learning ubiquitous user models based on users’ location history
- In [3
, 2007
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ALPHA SYSTEMS INC.
"... One target of a ubiquitous computing environment is to create and activate communities in which people interact in a lively manner based on their interests and situations. To achieve that goal, we have been developing a “ubiquitous community support system (UbiCoSup) ” for event spaces since 2002 be ..."
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One target of a ubiquitous computing environment is to create and activate communities in which people interact in a lively manner based on their interests and situations. To achieve that goal, we have been developing a “ubiquitous community support system (UbiCoSup) ” for event spaces since 2002 because event spaces have rich contents and interactions among certain interest groups and myriad sub-communities. We have been developing the UbiCoSup by elaborately fusing web support systems based on cyber world interaction and onsite support systems based on real-world interaction. In 2005, we were kindly granted the opportunity to demonstrate the newest UbiCoSup for all attendees of Ubicomp2005. This paper briefly describes the system architecture and the characteristics of each system.
General Terms
"... Exhibitions at a scientific museum are usually difficult for ordinary school pupils. To improve the issues of current explanation systems, we use Personal Data Assistant (PDA) devices. Recent PDAs have enough functionality for people to interactively, individually, but it is not easy to assist that ..."
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Exhibitions at a scientific museum are usually difficult for ordinary school pupils. To improve the issues of current explanation systems, we use Personal Data Assistant (PDA) devices. Recent PDAs have enough functionality for people to interactively, individually, but it is not easy to assist that school pupils learn scientific knowledge merely using PDA. This research examined the main focus of the design and implementation of visual interfaces for PDAs for such a learning system. We aims the visual interface for PDAs have more interactive and entertainment to engage for learning scientific knowledge. Experiments using two prototype systems(Pi-book and Pit A Pat)implemented in the Flash/MX software toolkit have suggested the effectiveness on the performance and functionality of the proposed method. Categories and Subject Descriptors [D5 INFORMATION INTERFACES AND PRESENTATION.3.3]: User-centered design,
tokyo.ac.jp
"... In a ubiquitous computing environment, it is desirable to provide a user with information depending on a user’s situation, such as time, location, user behavior, and social context. At conventions, such as academic conferences and exhibitions, where participants must register in advance, the social ..."
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In a ubiquitous computing environment, it is desirable to provide a user with information depending on a user’s situation, such as time, location, user behavior, and social context. At conventions, such as academic conferences and exhibitions, where participants must register in advance, the social context of participants can be extracted from the Web using their names and affiliations without asking them many questions. In our study, we attempt to extract the social network of participants from the Web, where a node rep-resents a participant and an edge represents the relationship of two participants. The network shows the position of each participant and some participant clusters. Furthermore, this network can be used in many services, such as finding an appropriate person to in-troduce or negotiate with someone, and who one should talk to in order to expand his/her network efficiently.
Conductive Fabric
"... Objective: To solve the complicated wires and battery maintainance problems in the application of werarable computing for biomedical monitoring, the elec-tromyography (EMG) measurement system using conductive fabric for power supply and electric shield for noise reduction is proposed. Material and M ..."
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Objective: To solve the complicated wires and battery maintainance problems in the application of werarable computing for biomedical monitoring, the elec-tromyography (EMG) measurement system using conductive fabric for power supply and electric shield for noise reduction is proposed. Material and Methods: The basic cable-free network system using conductive fabric, named as “TextileNet ” is developed. The conductive fabric has the function of electic shield for noise reduction in EMG measurement, and it enables the precise EMG measurement with wearable system. Results: The specifications of the developed prototype TextileNet system us-ing wear with conductive fabric were communication speed of 9600 bit per second and power supply of 3W for each device. The electric shield effect was evaluated for precise EMG measurement, and the shield efficacy of conductive fabric was estimated as high as that of shield room. Conclusions: TextileNet system solves both the problems of complicated wires and battery maintainance in wearable computing systems. Conductive fabric
