• Title/Summary/Keyword: preference profile

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A Study of a Knowledge Inference Algorithm using an Association Mining Method based on Ontologies (온톨로지 기반에서 연관 마이닝 방법을 이용한 지식 추론 알고리즘 연구)

  • Hwang, Hyun-Suk;Lee, Jun-Yeon
    • Journal of Korea Multimedia Society
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    • v.11 no.11
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    • pp.1566-1574
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    • 2008
  • Researches of current information searching focus on providing personalized results as well as matching needed queries in an enormous amount of information. This paper aims at discovering hidden knowledge to provide personalized and inferred search results based on the ontology with categorized concepts and relations among data. The current searching occasionally presents too much redundant information or offers no matching results from large volumes of data. To lessen this disadvantages in the information searching, we propose an inference algorithm that supports associated and inferred searching through the Jess engine based on the OWL ontology constraints and knowledge expressed by SWRL with association rules. After constructing the personalized preference ontology for domains such as restaurants, gas stations, bakeries, and so on, it shows that new knowledge information generated from the ontology and the rules is provided with an example of the domain of gas stations.

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Efficient Web Document Search based on Users' Understanding Levels (사용자의 이해수준에 따른 효율적인 웹문서 검색)

  • Shim, Sang-Hee;Lee, Soo-Jung
    • Journal of KIISE:Computing Practices and Letters
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    • v.15 no.1
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    • pp.38-46
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    • 2009
  • With the rapid increase in the number of Web documents, the problem of information overload is growing more serious in Internet search. In order to ease the problem, researchers are paying attention to personalization, which creates Web environment fittingly for users' preference, but most of search engines produce results focused on users' queries. Thus, the present study examined the method of producing search results personalized based on a user's understanding level. A characteristic that differentiates this study from previous researches is that it considers users' understanding level and searches documents of difficulty fit for the level first. The difficulty level of a document is adjusted based on the understanding level of users who access the document, and a user's understanding level is updated periodically based on the difficulty of documents accessed by the user. A Web search system based on the results of this study is expected to bring very useful results to Web users of various age groups.

Two-step Clustering Method Using Time Schema for Performance Improvement in Recommender Systems (추천시스템의 성능 향상을 위한 시간스키마 적용 2단계 클러스터링 기법)

  • Bu Jong-Su;Hong Jong-Kyu;Park Won-Ik;Kim Ryong;Kim Young-Kuk
    • The Journal of Society for e-Business Studies
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    • v.10 no.2
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    • pp.109-132
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    • 2005
  • With the flood of multimedia contents over the digital TV channels, the internet, and etc., users sometimes have a difficulty in finding their preferred contents, spend heavy surfing time to find them, and are even very likely to miss them while searching. In this paper we suggests two-step clustering technique using time schema on how the system can recommend the user's preferred contents based on the collaborative filtering that has been proved to be successful when new users appeared. This method maps and recommends users' profile according to the gender and age at the first step, and then recommends a probabilistic item clustering customers who choose the same item at the same time based on time schema at the second stage. In addition, this has improved the accuracy of predictions in recommendation and the efficiency in time calculation by reflecting feedbacks of the result of the recommender engine and dynamically update customers' preference.

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Quality Characteristics of Muffin added with Actinidia polygama Powder (개다래 분말을 첨가한 머핀의 품질특성)

  • Park, Eo-Jin
    • Culinary science and hospitality research
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    • v.22 no.2
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    • pp.125-135
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    • 2016
  • This study investigated the quality characteristics of muffins containing Actinidia polygama powder, which is well known for its various functions and biological activity. With increasing Actinidia polygama powder, the volume, height and specific volume increased significantly. The height of the muffins prepared with Actinidia polygama powder was higher than that of the control group. The pH of the muffin decreased significantly with increased levels of Actinidia polygama powder. The moisture of samples raged from 26.83% to 30.86%. The L- and b-value decreased, while a-value increased, with increasing amounts of added Actinidia polygama powder. Textural profile analysis showed that the hardness, springiness and chewiness were decreased with increasing Actinidia polygama powder contents. As the Actinidia polygama powder content increased, 1,1-diphenyl-2picriylhydrazyl(DPPH) radical scavenging also significantly increased. The sensory evaluation results indicated that the group of 3% Actinidia polygama powder recorded the highest overall preference score at 6.20. The quality characteristics of the 3% added samples exhibited significantly similar or higher values as compared to those of the conrols, raising the possibility of development in health-functional muffins.

Sensory and Texture Properties of Gamdanja (감단자의 관능적 및 텍스쳐 특성)

  • Lee Hyo-Gee;Baek Hyun-Nam;Kim Jung-Won
    • Korean journal of food and cookery science
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    • v.20 no.6 s.84
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    • pp.650-657
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    • 2004
  • The objective of this study was to seek the best recipe for making Gamdanja. Gamdanja is a kind of rice cake made from persimmon extract and winy flour, with a little salt mixed into the waxy flour. The method involved boiling the persimmon extract and beating in the waxy rice powder until all the waxy flour had been added. The procedure was as follows: Gamdanja containing different ratios of ingredients, such as persimmon extract (23, 23.5 and 24 hrs) and waxy rice flour (160 and 180g). The most desirable recipe was determined after sensory examination and mechanical tests using texture, moisture content and colorimeter measurements. The results of the sensory evaluation showed that Gamdanja made using persimmon extracted for 23.5 hrs, with the additional of 160g of winy flour gave the higher scores for QDA profile, chewiness, delicacy and after swallowing preference than the other ratios. The results of the acceptance test also showed that the Gamdanja made using the persimmon extracted for 23.5 hrs with 160g of waxy rice flour was the best mix in every respect, such as for color and overall acceptability. In the textural analysis of Gamdanja, the hardness, adhesiveness, gumminess and chewiness were increased by the additiong of furtherway lour. The moisture content of Gamdnja with persimmon extracted for 23 hrs was higher an those extracted for 23.5 and 24 hrs. The L-, a- and values of Gamdanja were increased with decreasing waxy flour. The sensory and mechanical examinations showed the overall quality of Gamdanja had positive correlations with delicacy and color, but negative correlations with hardness, adhesiveness, gumminess, and chewiness. As a result of these tests, the most desirable recipe for the Gamdanja was persimmon extracted for 23.5 hrs with the additional of 160g of waxy rice flour, containing $1\%$ salt and a moisture content of $45.87\%$.

The changes of sensory and instrumental characteristics for rice stored at different temperature (온도를 달리하여 저장한 쌀의 관능적 특성 및 기계적 특성의 변화)

  • 김미라;황인경
    • Korean journal of food and cookery science
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    • v.3 no.2
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    • pp.50-58
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    • 1987
  • This study was conducted to examine the changes of sensory and instrumental characteristics focusing on flavor and texture of cooked rice with Akibare(Japonica type) and Milyang 23(hybrid of Japonica and Indies) under two different storage temperatures. The changes of sensory characteristics were not significant throughout the storage of 70 days at $5^{\circ}C$, but were significant after 30 days storage at $30^{\circ}C$. The stepwise regression showed that stickiness, gloosiness and off-flavor of rice effected on overall preference in old rice stored at $30^{\circ}C$. As making storage temperature be tiger and period be longer, hardness, springiness, gumminess and chewiness were increased further but cohesiveness and adhesiveness were decreased in the texture changes of cooked rice measured by Instron.

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Implementation of Personalized Music Recommendation System using Time-weighting in Mobile Environment (모바일 환경에서 시간에 따른 가중치 부여를 이용한 개인화된 음악 추천 서비스)

  • Park, Won Ik;Kang, Sang Kil
    • Journal of Information Technology and Architecture
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    • v.10 no.2
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    • pp.251-261
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    • 2013
  • The appearance of various mobile Internet environment access to existing networks of mobile devices is easier to tell. In addition, mobile device users to use the wireless environment than a wired environment, user profile information is readily available features. Mobile devices have features that use alone. These characteristics of mobile devices to apply the personalization service is the best system. This paper proposes for mobile device users a personalized mobile music content recommendation service. This service propose to utilizes the user's access history information using time-weighting and collaborative filtering. Access history information can find out information of user interest. Using this information, consider the preference of music genre and time-weighted based on the recommendations makes the music. This method the problem of the traditional music recommendation system, point user's favorite music genre is changing over time do not consider that to solve the problem.

Consumer Attitudes Toward Storing and Thawing Chicken and Effects of the Common Thawing Practices on Some Quality Characteristics of Frozen Chicken

  • Benli, Hakan
    • Asian-Australasian Journal of Animal Sciences
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    • v.29 no.1
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    • pp.100-108
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    • 2016
  • In this study, a survey was conducted to both evaluate the consumers' general attitudes for purchasing and storing the raw chicken and determine the thawing practices used for defrosting frozen chicken at home. About 75% of the consumers indicated purchasing chicken meat at least once a week or more. Furthermore, the majority (82.16%) of those who stored at least a portion of the raw chicken stated freezing the raw chicken meat at home. Freezing the chicken meat was considered to have no effect on the quality by 43.49% of the consumers while 56.51% thought that freezing had either negative or positive effects on the quality. The survey study indicated that top five most commonly used thawing practices included thawing on the kitchen counter, thawing in the refrigerator, thawing in the warm water, thawing in the microwave, and thawing under tap water. In addition, an experimental study was conducted to determine the effects of these most commonly used thawing practices on some quality characteristics of the chicken meat including pH, drip loss, cooking loss, color analysis and textural profile analysis. Although, $L^*$ value for thawing on the kitchen counter was the lowest, after cooking, none of the thawing treatments have a significant effect on the color values. Thawing in the microwave produced the highest drip loss of 3.47% while the lowest drip loss of 0.62% was observed with thawing in the refrigerator. On the other hand, thawing in the microwave and refrigerator caused the lowest cooking loss values of 18.29% and 18.53%, respectively. Nevertheless, there were no significant differences among textural parameter values of the defrosted and then cooked samples using the home based thawing practices, indicating similar quality characteristics among the samples.

Design and Implementation of Context Awareness Inference System Based on Ontology - Focusing on Tour Information Guidance SmartPhone Application (온톨로지기반 상황인지 추론시스템 설계 및 구현 - 여행정보안내 스마트폰 앱을 사례로)

  • Lee, Jae Gil;Joo, Yong Jin;Park, Soo Hong
    • Journal of Korean Society for Geospatial Information Science
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    • v.20 no.4
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    • pp.67-75
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    • 2012
  • For the last few years, LBS has attracted considerable attention from many industries and societies as a result of propagated smart devices. LBS has a high utilization of mobile users as it uses user positions as a significant factor. Current LBS has only taken user position into account and it makes some limits. So, it is necessarily suggested that support for personalized services which consider user's motion, traffic condition, weather condition, time, personal information and preferences that have a huge impact on the accuracy. The purpose of this study is to design the inference systems with user's motion, preferences and schedules and provide users with the personalized information. To achieve this, Movement Ontology, User Profile Ontology, Schedule Ontology and Work Ontology should be constructed and based on this, smart applications were developed. Developed applications induced appropriately recommended results according to user's preference, motion and directions.

Randomized controlled clinical trial of oral health-related quality of life in patients wearing conventional and self-ligating brackets

  • Othman, Siti Adibah;Mansor, Noorhanizar;Saub, Roslan
    • The korean journal of orthodontics
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    • v.44 no.4
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    • pp.168-176
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    • 2014
  • Objective: The aim of this randomized controlled clinical trial was to compare oral health-related quality of life (OHRQoL) of patients treated with conventional, active self-ligating (ASL), and passive self-ligating (PSL) brackets in different therapeutic phases. Methods: Sixty patients (mean age 18.3 years; 29 males and 31 females) requiring orthodontic treatment were randomly and equally assigned to receive conventional (Victory Series), ASL (In-Ovation R), or PSL (Damon 3MX) brackets. OHRQoL was measured with a self-administered modified 16-item Malaysian version of the Oral Health Impact Profile for immediate (soon after the visit) and late (just before the subsequent visit) assessments of the bonding and activation phases. Data were analyzed with the Kruskal-Wallis and chi-square tests. Results: The PSL and ASL groups showed more immediate and late impacts in the bonding phase, respectively; the conventional group was affected in both the assessments. The first activation phase had similar impacts in the groups. After the second activation, the conventional group showed more immediate impacts, whereas the PSL and ASL groups had more late impacts. The commonly affected domains were "physical disability," "functional limitation," "physical pain," and "psychological discomfort." No significant differences in the prevalence and severity of immediate and late impacts on OHRQoL of the patients were noted in any therapeutic phase. Conclusions: No bracket system seems to ensure superior OHRQoL. This information could be useful for explaining the therapeutic phases, especially the initial one, and selecting the optimal bracket system based on the patient's preference.