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시맨틱 웹 서비스를 위한 Topic Maps 기반의 온톨로지 언어 (Ontology Language based on Topic Maps for Semantic Web Service)

황윤영;유정연;유소연;이규철
- 한국전자거래학회:학술대회논문집
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- 한국전자거래학회 2003년도 종합학술대회 논문집
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- pp.191-196
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- 2003
The Semantic web service is able to intelligently discover, execute, composite and monitor the Web Service. It constructs the ontology on Web Service and describes the Semantic Markup in the machine-readable form. The currently developing technologies of the Semantic Web Service discovery are DAML-S matchmaker in Carnegie Mellon University, Process Handbook in MIT and etc. In this paper, we propose the ontology language based on Topic Maps that supports the benefits and solves the problems of the Semantic Web Service discovery technologies .
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TM-S ： 서비스를 위한 Topic Maps기반의 온톨로지 및 질의 언어 설계 (Define the Ontology and Query Language Based on Topic Maps for Service)

유정연;이규철
- 한국정보과학회:학술대회논문집
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- 한국정보과학회 2004년도 봄 학술발표논문집 Vol.31 No.1 (B)
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- pp.109-111
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- 2004
대표적인 시맨틱 웹 서비스 발견 기술은 OWL-S와 MIT의 Process Handbook이 있다. 그러나. OWL-S는 개발 초기 단계이기 때문에, 아직 효과적인 웹 서비스 발견을 제공하기에는 몇 가지 제약 조건을 가지고 있다. 예를 들어. 정보 전송을 위한 제악 조건과 실행에 따른 상태 변환 정보를 정의하고 있지 않다. 또한. 사용자가 원하는 프로세스들의 시맨틱 정보들을 정의하고 있지 않다. 반면, MIT Process Handbook은 OWL-S와 같이 서비스 모델에 대한 상세한 정보들을 정의하고 있지 않아, 서비스 작성에 필요한 서비스들을 찾기가 어렵다. 그러므로, 본 논문에서는 Topic Maps 기반의 TM-S(Topic Maps for Service)를 제안하였다.
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유사도 알고리즘을 활용한 시맨틱 프로세스 검색방안 (Semantic Process Retrieval with Similarity Algorithms)

이홍주
- Asia pacific journal of information systems
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- 제18권1호
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- pp.79-96
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- 2008
One of the roles of the Semantic Web services is to execute dynamic intra-organizational services including the integration and interoperation of business processes. Since different organizations design their processes differently, the retrieval of similar semantic business processes is necessary in order to support inter-organizational collaborations. Most approaches for finding services that have certain features and support certain business processes have relied on some type of logical reasoning and exact matching. This paper presents our approach of using imprecise matching for expanding results from an exact matching engine to query the OWL(Web Ontology Language) MIT Process Handbook. MIT Process Handbook is an electronic repository of best-practice business processes. The Handbook is intended to help people: (1) redesigning organizational processes, (2) inventing new processes, and (3) sharing ideas about organizational practices. In order to use the MIT Process Handbook for process retrieval experiments, we had to export it into an OWL-based format. We model the Process Handbook meta-model in OWL and export the processes in the Handbook as instances of the meta-model. Next, we need to find a sizable number of queries and their corresponding correct answers in the Process Handbook. Many previous studies devised artificial dataset composed of randomly generated numbers without real meaning and used subjective ratings for correct answers and similarity values between processes. To generate a semantic-preserving test data set, we create 20 variants for each target process that are syntactically different but semantically equivalent using mutation operators. These variants represent the correct answers of the target process. We devise diverse similarity algorithms based on values of process attributes and structures of business processes. We use simple similarity algorithms for text retrieval such as TF-IDF and Levenshtein edit distance to devise our approaches, and utilize tree edit distance measure because semantic processes are appeared to have a graph structure. Also, we design similarity algorithms considering similarity of process structure such as part process, goal, and exception. Since we can identify relationships between semantic process and its subcomponents, this information can be utilized for calculating similarities between processes. Dice's coefficient and Jaccard similarity measures are utilized to calculate portion of overlaps between processes in diverse ways. We perform retrieval experiments to compare the performance of the devised similarity algorithms. We measure the retrieval performance in terms of precision, recall and F measure? the harmonic mean of precision and recall. The tree edit distance shows the poorest performance in terms of all measures. TF-IDF and the method incorporating TF-IDF measure and Levenshtein edit distance show better performances than other devised methods. These two measures are focused on similarity between name and descriptions of process. In addition, we calculate rank correlation coefficient, Kendall's tau b, between the number of process mutations and ranking of similarity values among the mutation sets. In this experiment, similarity measures based on process structure, such as Dice's, Jaccard, and derivatives of these measures, show greater coefficient than measures based on values of process attributes. However, the Lev-TFIDF-JaccardAll measure considering process structure and attributes' values together shows reasonably better performances in these two experiments. For retrieving semantic process, we can think that it's better to consider diverse aspects of process similarity such as process structure and values of process attributes. We generate semantic process data and its dataset for retrieval experiment from MIT Process Handbook repository. We suggest imprecise query algorithms that expand retrieval results from exact matching engine such as SPARQL, and compare the retrieval performances of the similarity algorithms. For the limitations and future work, we need to perform experiments with other dataset from other domain. And, since there are many similarity values from diverse measures, we may find better ways to identify relevant processes by applying these values simultaneously.
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반 무한 평판에 존재하는 반 무한 균열에서 엄밀 해를 이용한 응력확대계수 계산 (Calculation of Stress Intensity Factor K_I Using the Exact Solution in an Infinitely Deep Crack in a Half-Plane)

안득만
- 대한기계학회논문집A
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- 제41권1호
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- pp.7-11
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- 2017
본 논문은 등방성 재료로 된 반 무한 평판에 존재하는 반 무한 균열에서 엄밀해를 구성하여 응력확대계수를 계산하였다. H. Tada, P. Paris, G. Irwin의 "The Stress Analysis of Cracks Handbook"에 수록된 공식과 Bueckner의 공식에 엄밀해로부터 구한 균열 면에 작용하는 표면력을 적용하여 응력확대계수를 계산하였다. Bueckner의 공식은 엄밀해와 일치하였고 Tada의 Handbook에 수록된 공식은 엄밀해와 일치하지 않았다. 따라서 Tada의 공식이 오류임을 알 수 있다.
https://doi.org/10.3795/KSME-A.2017.41.1.007 인용 PDF KSCI