• The Transactions of The Korean Institute of Electrical Engineers
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• v.59 no.7
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• pp.1327-1331
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• 2010

Association rules are very useful and interesting patterns for discovering preferences of each person in digital-content services. The Apriori algorithm is an influential algorithm for mining frequent itemsets for association rules. However, since this algorithm does not take into account reference times of each content as an important support factor, it cannot be used to extract associations among time-based data. This paper proposes an augmented Apriori algorithm discovers association rules using both frequencies and usage times of each item.

• Journal of the Korea Society for Simulation
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• v.14 no.3
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• pp.119-127
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• 2005

Web services and their composition (web processes) are promising technologies to efficiently integrate disparate software components over various types of systems. As many web services are nowadays available on Internet, quality of services (QoS) and performance/cost become increasingly important to differentiating between similar service providers. In this work, we introduce sPAC (Web Services Performance Analysis Centre) and show how customers can benefit from sPAC to consider performance in composing and commercializing web services. sPAC 1) helps users to graphically describe the workflow of web services, 2) invokes web services to test out performance for light load conditions, 3) automatically converts the web services and the flow between them into a simulation model, 4) conducts extensive simulations for heavy load conditions and various usage patterns, and 5) reports analysis results and estimation data for the web services.

• Speech Sciences
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• v.8 no.3
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• pp.105-113
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• 2001

The abbreviation (specially, an acronym) are used more nowadays. However we are using them carelessly unknowing that there are some reducing patterns. In this paper, we will first analyse the right oralization and the phonemicization of abbreviation on the basis of the group types. Then, we will propose necessary and sufficient conditions to recognize how to read or pronounce the acronyms and in which way, when they are converted from the text to the speech. We have limited the use of acronym to the graphem-phoneme relations, and the diversity of the usage to minimized, and therefore we could define clearly the characteristics of the phonetic chains. In conclusion, we could find that there are more phonemicization in producing acronyms with these phonetic chains characteristics, and these phonetic based acronyms are increasingly used in the field of aviation and medicine.

• Journal of Sasang Constitutional Medicine
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• v.10 no.2
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• pp.291-304
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• 1998

This thesis on the basis of the "Sasang"(the four classification by the physical constitution) that becomes the focus of the public interest in Korea intends to grasp a color image and serve basic materials for the color usage in the interior design planning. It tries to identify the relationship between physical constitution and color. The color planning for experiment plans to be related to Korean traditional color. Analysis result on color and color image to patterns of interior color shows that the physical constitution in measure difference is bigger than sex among the many image evaluation items. Therefore, the interior color preference of Korean is bright hue and tint such as warm and cool color.

• Journal of the Semiconductor & Display Technology
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• v.19 no.2
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• pp.82-87
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• 2020

In this paper, we introduce the novel idea to improve the B/W usage efficiency of on-chip networks used for TAM to test multiple DRAMs. In order to avoid the local bottleneck of test packets caused by an ATE, we make test patterns using microcode-based instructions within ATE and adopt a test bus to transmit test responses from DRAM DFT (Design for Testability) called Test Generator (TG) to ATE. The proposed test platform will contribute to increasing the test economics of memory IC industry.

• Smart Media Journal
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• v.8 no.4
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• pp.80-84
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• 2019

As a result of AMI rapidly expanding and distributing its products, variety of services that utilize data on the use of electricity are increasing. In order to make these services more effective, missing metric data needs to be corrected, compensating for which Euclidean similarity is used to find customers with similar usage patterns. Throughout such a process, we propose a method for correcting missing data and provide comparison with the preceding methods.

• Journal of the Korean Institute of Rural Architecture
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• v.6 no.3
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• pp.39-48
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• 2004

The purpose of this study is to clarify the actual conditions of the plan composition of expressway service facilities. This study investigated the characteristics of both indoor space and outdoor space of 15 service facilities, and then analyzed attributes of users by the plan type along with their perception on the facility usage. The results of this study are summarized as follows; 1) When analyzing the attributes of expressway service facilities users, 36% respondents said that they used the expressway service facilities just to rest. The average distance of using the service plaza was found to be approximately 67km. 2) In terms of the indoor space of the expressway service facilities, as basic patterns, B(R+C+T)-type(53%), A(C+R+T)-type(40%), C(C+T+R)-type(7%) were found in order, all the service facilities need to expand them.

• Proceedings of the Korea Inteligent Information System Society Conference
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• 2001.06a
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• pp.243-252
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• 2001

Recently, as most companies recognize the importance of the customer relationship management, they strongly believe that they must know who their customers are. The job of a customer is very important information for us to understand the customer. However, since most customers are reluctant to reveal themselves, they do not let us know their jobs, and even provide false information about their jobs. The target domain of our research is mobile telecommunication. In this research, we developed a system that identifies the customer's job by utilizing the Call Detailed Record. From the Call Detailed Record, we extracted such variables as 'Average Monthly Payment'and 'Age of the Customer'and so forth. Moreover, we generated many summary variables and derived variables such as 'Number of Calls during Work Hours in Weekday', and 'Ratio of Calls from other Mobile Telephone'. Using artificial neural networks, we developed a two-step Job Identification System. In the first step, it identifies the four job classes then in the second step, it subdivides these four job classes into seven jobs. The accuracy of identifying the seven jobs was 69.1%.

• Proceedings of the Korean Information Science Society Conference
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• 2004.04b
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• pp.25-27
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• 2004

대용량 웹 데이터베이스로부터 필요한 관련 정보를 탐색하고, 다양한 형태의 정보로부터 지식을 창출하는 일은 매우 어려운 일이다. 본 논문은 복잡하고 다양한 형태의 패턴이 존재하고, 연속된 입력을 갖는 웹 데이터베이스에서 발생되는 빈발 패턴들을 효과적으로 저장할 수 있는 FP-Tree를 기반으로 하여 변화된 정보들을 능동적으로 유지하고 새로운 정보들에 U해 FP-Tree를 재구성하여 웹 페이지에 대한 유용한 패턴 정보와 사용자의 웹 사용 패턴 분석을 용이하게 한다. 그 결과 새로이 발견된 웹 사용 패턴들을 통해 웹 페이지의 구조적 정보와 구조적 연판 정보를 효과적으로 얻을 수 있다.

• Journal of Korean language education
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• v.29 no.3
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• pp.145-163
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• 2018

The purpose of this study was to identify the necessity of research for increasing French language learners and to examine their use of listening strategies according to their proficiency as a basic study for their continuous learning and communication skills. In the case of French language Korean learners, both the beginner and intermediate learners used the upper cognitive strategy most frequently. However, the cognitive strategy, which has been mentioned as a frequently used strategy in previous studies, was found to be the least used in this study. This finding can be attributed to differences in mores and mastery of prior studies and research subjects. The cognitive strategy was lower in both the beginner and intermediate levels, but the level of use increased significantly in the intermediate level compared to the beginner level, showing only statistically significant differences in the usage patterns according to the proficiency level among the four listening strategies.