=Paper=
{{Paper
|id=Vol-260/paper-21
|storemode=property
|title=Community-based Harmonious Media Space for a Group of Users
|pdfUrl=https://ceur-ws.org/Vol-260/paper21.pdf
|volume=Vol-260
|dblpUrl=https://dblp.org/rec/conf/isuvr/ShinYHRW07
}}
==Community-based Harmonious Media Space for a Group of Users==
https://ceur-ws.org/Vol-260/paper21.pdf
International Symposium on Ubiquitous VR 2007 1
Community-based Harmonious Media Space
for a Group of Users
C.Shin, H.Yoon, J.Han, U.Rashid and W.Woo
describe community-based media space for a group of users.
Abstract—In this paper, we propos a community-based
harmonious media space for multiple users realizing ubiquitous II. COMMUNITY-BASED HARMONIOUS MEDIA SPACE
virtual reality (U-VR). Although lots of work have been tried to
develop smart spaces, they lack efficient management of media The community-based harmonious space is a media space
spaces for multi users. In order to overcome the problem, the allowing a group of users to share services and space based on
proposed space enables the users to initiate community based on community. The users in such space create their community to
context and decide the level of personal information. It also utilize the space dynamically composed of a set of services
detects and resolves service conflicts among the different users. related to the users. Therefore, the space is composed of
Finally, mobile devices allow the users to control service and
community management, personal information disclosure,
participate in the services of the communities. We expect that the
proposed media space plays a vital role in building harmonious conflict management and mobile user assistants. Figure 1
media services for a group of users in U-VR. shows an example scenario illustrating the community-based
media space.
Index Terms—Context-awareness, community computing, 1
Community B
conflict resolution, information disclosure, mobile interaction.
4
Mobile User
Interaction
I. INTRODUCTION 3
Conflict
S MART spaces are shared work spaces of multiple users, Resolution
2 2 1
Information Information
where various services are pervasive and cooperating for Disclosure Disclosure
Community A
the users. MusicFX, an arbitrator, automatically selects music
stations by merging users’ preferences for a group in a fitness Figure 1. An example scenario of Community-based
center [1]. mavHome, an intelligent home environment, harmonious media space
controls a set of devices in a home by automatically adjusting
the equilibrium level of service based on users’ location [2]. As shown in Figure 1, at first, the users initiate their own
ubiHome, an ubiComp-enabled living room for future home communities based on smart objects in the space. Based on the
environments, deals with multi residents by recommending and community, the information discloser decides an appropriate
mediating their preferred media items [3]. However, the level of disclosure for interacting environmental services and
applications in such spaces are targeted for the specific purpose other users.
and therefore they have limitations when they are applied to
another smart space. In addition, there is no privacy concern, A. User Centric Community Management
even though they are supposed to deal with a group of users. The user centric community is a collaborative virtual work
Furthermore, it is difficult to manage and configure service space consisting of users, services and contents. It dynamically
environments because lots of services are pervasive in the configures the work space according to changes of user’s
smart space. interest to efficiently utilize resources in the smart space. The
In order to overcome the limitation of the previous, we community is divided into two layers according to members of
propose a community-based harmonious media space for a community: user-service and user-contents community. In the
group of users. The space builds user-centric community by case of user-service community, the services relevant to users’
exploiting context and social relationship among the services interest are collected and make a harmonious space by resolve
and their owners. It also disseminates user’s private conflict among the services. The user-contents community
information to services and other users nearby users and consists of contents relevant to users’ interest and recommends
situation. It also deals with conflicts when multi-users are communities’ preferred contents to the users.
involved in the same services. In the following sections, we In order to create the user-centric community, the
community management builds a social network by classifying
the members such as users, services and contents. Based on the
This work is support by the UCN Project, the MIC 21C Frontier R&D
Program in S.Korea. social network, it creates communication channels among the
C.Shin, H.Yoon, J.Han, U.Rashid and W.Woo are with GIST U-VR members. The community management also dynamically
Lab.(email:{cshin, hyoon, jhan, urashid and wwoo}@gist.ac.kr).
International Symposium on Ubiquitous VR 2007 2
reconfigures the established community by exploiting context management components exist in the ubi-UCAM. The
when user’s interest is changed. As a result, the community is wear-UCAM is context-aware application model for wearable
updated with the newly created social network. computing environments and is applied mobile user assistant.
Community management, information disclosure and mobile
B. Personal Information Disclosure
assistant components are placed in wear-UCAM. Figure 2
Personal information disclosure is about selectivity shows an implementation of community-based harmonious
disseminating user’s private information according nearby media space.
users and services. Personal information is classified into two
types: static and dynamic information. The static information
includes user profile, preferences, health states, etc. The
dynamic information includes location and activity in a space.
In order to disclose the personal information, it utilizes
two-way handshakes between a recipient and disclosure. The
recipient is the entity which request private information from
other entity and the disclosure is the entity which manages
information. The recipient delivers a query as a context to the
Figure 2. An implementation of the community-based
disclosure to obtain personal information and the disclosure
harmonious media space
determines personal information based on the recipient profile.
C. Conflict Management As shown in Figure 2, the users manage their private
Conflict management is a coordination mechanism allowing information with mobile devices and try to create his
the users to share the applications in the space efficiently. In community while moving around in a smart space. They decide
smart space, conflict is divided into three types according to an appropriate level of disclosure based on the community and
services and their relationship. In case of type 1 conflict, a disseminate his profile to interact with smart objects and their
service is shared by multiple users and has several choices for services. The ubiTV application mediates conflicts among the
conflict resolution. In case of type 2 conflict, a service is related users through mobile devices and the share display when they
to other services and has only two choices as a resource. In case are accessing the same services.
of type 3 conflict, a service is related to other services and has
several strategies for resolving it. IV. CONCLUSION
In order to detect the service conflict, the management
In this paper, we proposed a community-based harmonious
exploits service profile such as precondition, effect, required
resources and parameters which characterize the services. It media space for a group of users. The space supports dynamic
then resolves the conflict harmoniously by selecting a strategy reconfigurable community based on user context. It also
giving the highest satisfaction to the users. supports selectively sharing of personal information and
resolves possible conflict among users by exploiting nearby
D. Mobile User Assistant users and situation. Furthermore, it provides the users with an
Mobile user assistants provide the users with an intuitive intuitive and scalable interface for interacting with smart
and scalable way to interact with the smart objects and their objects and their services. Therefore, we expect that the
services. For the purpose, the assistants consist of service proposed smart space play a vital role in supporting efficiently
discovery, service selection and user interface. The service sharing of the smart space and applications.
discovery gathers services from user community. The service
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