• Title/Summary/Keyword: Ontology Service

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Ontology based reasoning for resource sharing in ubiquitous smart space (유비쿼터스 지능 공간에서 자원 공유를 위한 온톨로지기반 추론)

  • Kang, Sun-Hee;Park, Jong-Hyun;Kim, Young-Kuk;Kang, Ji-Hoon
    • Proceedings of the Korea Contents Association Conference
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    • 2008.05a
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    • pp.489-493
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    • 2008
  • One of the main goals of ubiquitous computing is to share a variety of resources existing to smart space and compose an efficient services by reasoning the most user-suitable resources, However, each applications describe the resources and services in different expression ways and these heterogeneous expression ways make it difficult for sharing and reasoning of the resources. Therefore, it is necessary to unify the information for resources sharing and ontology is one of the solution for the unification. In this paper, we define the possible services in the ubiquitous smart space and its ontology. Also, we propose a resource ontology to represent the usable resources in the space. our ontologies are used to reason resource set for composing user-suitable service in the ubiquitous smart space.

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Ontology-based IoT Context Information Modeling and Semantic-based IoT Mashup Services Implementation (온톨로지 기반의 IoT 상황 정보 모델링 및 시맨틱 기반 IoT 매쉬업 서비스 구현)

  • Seok, Hyun-Seung;Lee, Yong-Ju
    • The Journal of the Korea institute of electronic communication sciences
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    • v.14 no.4
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    • pp.671-678
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    • 2019
  • The semantic information provided through the semantic-based IoT system will produce new high value-added products that are completely different from what we have known and experienced. From this point of view, the key issue of current IoT technology and applications is the development of an intelligent IoT platform architecture. The proposed system collects the IoT data of the sensors from the cloud computer, converts them into RDF, and annotates them with semantics. The converted semantic data is shared and utilized through the ontology repository. We use KT's IoTMakers as a cloud computing environment, and the ontology repository uses Jena's Fuseki server to express SPARQL query results on the web using Daum Map API and Highcharts API. This gives people the opportunity to access the semantic IoT mash-up service easily and has various application possibilities.

Panic Disorder Symptom Care System Based on Context Awareness (상황인식 기반의 공황장애 증상 관리 시스템)

  • Choi, Dong-Oun;Huan, Meng;Kang, Yun-Jeong
    • Journal of Korea Entertainment Industry Association
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    • v.13 no.4
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    • pp.63-70
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    • 2019
  • We extract the symptom of panic disorder from the context awareness environment. It extracts body context information through natural movement that exists in everyday life and uses a component of panic disorder. The ontology theory can be used to provide information on the degree of symptoms of panic disorder through inference process. For the components of panic disorder to the information processing based on ontology are defined as Classes. Panic disorder index is expressed through ontology modeling so that the condition of panic disorder can be known. The derivation of panic disorder component and panic disorder index will enable context awareness based information service for panic disorder. The context information is periodically synchronized with the context awareness on based device. Panic disorder can be used to improve the lifestyle of panic disorder.

Development of the Efficient DAML+OIL Document Management System to support the DAML-S Services in the Embedded Systems (내장형 시스템에서 DAML-S서비스 지원을 위한 효율적인 DAML+OIL문서 관리 시스템)

  • Kim Hag Soo;Jung Moon-young;Cha Hyun Seok;Son Jin Hyun
    • Journal of KIISE:Computing Practices and Letters
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    • v.11 no.1
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    • pp.36-49
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    • 2005
  • Recently, many researchers have given high attention to the semantic web services based on the semantic web technology While existing web services use the XML-based web service description language, WSDL, semantic web services are utilizing web service description languages such as DAML-S in ontology languages. The researchers of semantic web services are generally focused on web service discovery, web service invocation, web service selection and composition, and web service execution monitoring. Especially, the semantic web service discovery as the basis to accomplish the ultimate semantic web service environment has some different properties from previous information discovery areas. Hence, it is necessary to develop the storage system and discovery mechanism appropriate to the semantic well description languages. Even though some related systems have been developed, they are not appropriate for the embedded system environment, such as intelligent robotics, in which there are some limitations on memory disk space, and computing power In this regard, we in the embedded system environment have developed the document management system which efficiently manages the web service documents described by DAML-S for the purpose of the semantic web service discovery, In addition, we address the distinguishing characteristics of the system developed in this paper, compared with the related researches.

A Recommender System for Device Sharing Based on Context-Aware and Personalization

  • Park, Jong-Hyun
    • KSII Transactions on Internet and Information Systems (TIIS)
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    • v.4 no.2
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    • pp.174-190
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    • 2010
  • In ubiquitous computing, invisible devices and software are connected to one another to provide convenient services to users [1][2]. Users hope to obtain a personalized service which is composed of customized devices among sharable devices in a ubiquitous smart space (which is called USS in this paper). However, the situations of each user are different and user preferences also are various. Although users request the same service in the same USS, the most suitable devices for composing the service are different for each user. For these user requirements, this paper proposes a device recommender system which infers and recommends customized devices for composing a user required service. The objective of this paper is the development of the systems for recommending devices through context-aware inference in peer-to-peer environments. For this goal, this paper considers the context and user preference. Also I implement a prototype system and test performance on the real ubiquitous mobile object (UMO).

A Study on the Extension of Disaster Safety Information Service based on Linked Open Data (LOD기반의 재난안전 정보서비스 확장에 관한 연구)

  • Kim, Tae-Young;Gang, Ju-Yeon;Kim, Hye-Young;Kim, Yong
    • Journal of the Korean Society for Library and Information Science
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    • v.51 no.3
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    • pp.163-188
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    • 2017
  • This study aims to propose disaster safety information service model based on LOD for effective management and dissemination of the information. To achieve the aim of this study, current state of disaster safety information was analyzed through online search and face-to-face interviews, and then the information was divided into 6 types. Finally, this study proposed specific process of building disaster safety information LOD service with considerations reflecting the information characteristics. The process for building LOD was based on Guidelines for Building Linked Data written by National Information Society Agency. Especially, ontology concept model was defined by using standard lexical resources and modeling tools based on 6 types of disaster safety information, and classes and properties were proposed. The results of this study will make disaster safety information more useful for common people.

Situation Modeling and Situation Awareness Middleware Development with Sensor Data for the Safety Transportation of Containers (컨테이너 안전 수송을 위한 센서데이터 기반의 상황 모델링과 상황인식 미들웨어 구현)

  • Nam, Tae-Woo;Yeom, Keun-Hyuk
    • The KIPS Transactions:PartD
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    • v.16D no.6
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    • pp.889-898
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    • 2009
  • Currently, the amount of containers is growing up continuously. However, they still depend on humans checking or validating. In this situation, humans must participate in the systems. Situation-awareness technologies allow human participation to be minimized. The situation-awareness technologies provide data or service appropriate to the object's current state, and the state is recognized automatically by the system. They can automatically execute working processes without human intervention. We suggest a middleware system based on situation-awareness technologies using an ontology for the safety transportation of containers. The middleware is aware of the current state and sends the data required by an application. It can help build new applications by enhancing agility, and it can also support automated service processing by invoking the service required like fire-fighting, fixing container, and so on. Improving transportation of containers process automation with situation-awareness technologies reduces manpower requirements for checking and validating containers, and so saves logistics costs of container transportation.

Personalized Recommendation System for IPTV using Ontology and K-medoids (IPTV환경에서 온톨로지와 k-medoids기법을 이용한 개인화 시스템)

  • Yun, Byeong-Dae;Kim, Jong-Woo;Cho, Yong-Seok;Kang, Sang-Gil
    • Journal of Intelligence and Information Systems
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    • v.16 no.3
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    • pp.147-161
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    • 2010
  • As broadcasting and communication are converged recently, communication is jointed to TV. TV viewing has brought about many changes. The IPTV (Internet Protocol Television) provides information service, movie contents, broadcast, etc. through internet with live programs + VOD (Video on demand) jointed. Using communication network, it becomes an issue of new business. In addition, new technical issues have been created by imaging technology for the service, networking technology without video cuts, security technologies to protect copyright, etc. Through this IPTV network, users can watch their desired programs when they want. However, IPTV has difficulties in search approach, menu approach, or finding programs. Menu approach spends a lot of time in approaching programs desired. Search approach can't be found when title, genre, name of actors, etc. are not known. In addition, inserting letters through remote control have problems. However, the bigger problem is that many times users are not usually ware of the services they use. Thus, to resolve difficulties when selecting VOD service in IPTV, a personalized service is recommended, which enhance users' satisfaction and use your time, efficiently. This paper provides appropriate programs which are fit to individuals not to save time in order to solve IPTV's shortcomings through filtering and recommendation-related system. The proposed recommendation system collects TV program information, the user's preferred program genres and detailed genre, channel, watching program, and information on viewing time based on individual records of watching IPTV. To look for these kinds of similarities, similarities can be compared by using ontology for TV programs. The reason to use these is because the distance of program can be measured by the similarity comparison. TV program ontology we are using is one extracted from TV-Anytime metadata which represents semantic nature. Also, ontology expresses the contents and features in figures. Through world net, vocabulary similarity is determined. All the words described on the programs are expanded into upper and lower classes for word similarity decision. The average of described key words was measured. The criterion of distance calculated ties similar programs through K-medoids dividing method. K-medoids dividing method is a dividing way to divide classified groups into ones with similar characteristics. This K-medoids method sets K-unit representative objects. Here, distance from representative object sets temporary distance and colonize it. Through algorithm, when the initial n-unit objects are tried to be divided into K-units. The optimal object must be found through repeated trials after selecting representative object temporarily. Through this course, similar programs must be colonized. Selecting programs through group analysis, weight should be given to the recommendation. The way to provide weight with recommendation is as the follows. When each group recommends programs, similar programs near representative objects will be recommended to users. The formula to calculate the distance is same as measure similar distance. It will be a basic figure which determines the rankings of recommended programs. Weight is used to calculate the number of watching lists. As the more programs are, the higher weight will be loaded. This is defined as cluster weight. Through this, sub-TV programs which are representative of the groups must be selected. The final TV programs ranks must be determined. However, the group-representative TV programs include errors. Therefore, weights must be added to TV program viewing preference. They must determine the finalranks.Based on this, our customers prefer proposed to recommend contents. So, based on the proposed method this paper suggested, experiment was carried out in controlled environment. Through experiment, the superiority of the proposed method is shown, compared to existing ways.

A Framework For Web Service Evolution using UML and OWL-S (UML과 OWL-S를 사용한 웹 서비스 진화 프레임워크)

  • Kim, Jin-Han;Lee, Chang-Ho;Lee, Jae-Jeong;Lee, Byung-Jeong
    • Journal of Digital Contents Society
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    • v.8 no.3
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    • pp.269-277
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    • 2007
  • Web service is an important technology to develop business to business e-commerce application. From a business perspective of time to market, dynamic evolution offers flexibility that software can adapt to unforeseen and fluctuating business requirements. OWL-S, based on OWL, is a service ontology language. The semantics provided by OWL support automation of service discovery, invocation, and service composition. In this paper we propose a framework to support dynamic evolution of service-oriented applications. We extend use-case analysis method to derive service description by defining requirements concept and mapping from requirement concept to activity diagram. A prototype is provided to show the validity of this framework.

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A Study on Reuse Technique of Software for SaaS Using Process Algebra

  • Hwang, Chigon;Shin, Hyoyoung;Lee, Jong-Yong;Jung, Kyedong
    • International journal of advanced smart convergence
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    • v.3 no.2
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    • pp.6-9
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    • 2014
  • SaaS provides software hosted on the cloud computing in a form of service. Thus, it enables the extension of service functions by combining or reusing the existing software. As an analysis technique, this paper suggests a method of verifying the reusability of a process by analyzing it with the process algebra. The suggested method can confirm the reusability of existing software, ensure the consistency of modifications by tenants or requests, and provide probabilities of combining processes.