• Journal of Information Processing Systems
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• 제2권1호
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• pp.23-27
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• 2006

This paper presents a feature selection technique based on distributional differences for efficient machine learning. Initial training data consists of data including many features and a target value. We classified them into positive and negative data based on the target value. We then divided the range of the feature values into 10 intervals and calculated the distribution of the intervals in each positive and negative data. Then, we selected the features and the intervals of the features for which the distributional differences are over a certain threshold. Using the selected intervals and features, we could obtain the reduced training data. In the experiments, we will show that the reduced training data can reduce the training time of the neural network by about 40%, and we can obtain more profit on simulated stock trading using the trained functions as well.

• 사상체질의학회지
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• 제23권3호
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• pp.361-373
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• 2011

1. Objectives: The purpose of this study was done to learn the Sasang constitutional distribution and to find out if there are differences in the type of diseases and symptoms according to the Sasang constitution in Japan. 2. Methods: We collected data from 366 patients who visited the Department of Oriental Medicine, Keio University and recruited 132 healthy persons in Tokyo, Japan. For sasang constitution diagnosis, they all have done SSCQ-P(Sasang Constitution Questionaire for Patients) questionnaire. and a sasang constitution specialist diagnosed the sasang constitution of them. And We classify the diseases and symptoms of 313 patients according to KCD(Korean Standard Classification of Diseases) and learn the prevalences of diseases and symptoms according to Sasang Constitution. 3. Results: 1) Among the total 498 subjects, distributional rate of Taeyangin, Soyangin, Taeeumin, and Soeumin were 2.0%, 26.3%, 29.9%, and 41.8%. Among the 366 patients, distributional rate of Taeyangin, Soyangin, Taeumin, and Soeumin were 0.8%, 27.3%, 28.7%, and 43.2%. Among the 132 healthy group, distributional rate of Taeyangin, Soyangin, Taeeumin, and Soeumin were 5.3%, 23.5%, 33.3%, and 37.9%. 2) The prevalences of 'V.Mental and behavioural disorders', 'XI.Diseases of the digestive system', 'XV.Pregnancy, childbirth and the puerperium' and 'feeling of coldness(X VIII.Symptoms, signs and abnormal clinical and laboratory findings, NEC)' of Soeumin were significantly higher than those of the other constitutions.(p-value<0.05) 4. Conclusions: The distributional rate of Sasangin of Japanese was different from that of Korean and especially the distributional rate of Soeumin of Japanese was significantly higher than that of Korean. There were significant differences on the prevalences of some diseases and symtoms according to KCD in Soeumin.

• The Journal of Asian Finance, Economics and Business
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• 제8권2호
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• pp.281-288
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• 2021

The purpose of the study is to determine the poverty and distributional effects of the implementation of Tax Reform for Acceleration and Inclusion Law. The Computable General Equilibrium-Top Down Behavioral Microsimulation was used to obtain the effects of the tax reform on macroeconomic and microeconomic levels. Moreover, the Poverty Gap Index, Squared Poverty Gap Index, Foster, Greer, and Thorbecke Measures of Poverty, and Sen-Shorrocks-Thon Index were used to measure the poverty effect of the tax reform. Meanwhile, the Gini Coefficient and SST Gini Coefficient Index were used to measure the distributional effect of the tax reform. The results show that the implementation of the tax reform has resulted in a significant increase in household income and disposable income. Region IV has the highest estimated increase in household income. Meanwhile, Region IV remained to have the lowest household income. Further, the findings of this study suggest that the tax reform resulted in a significant decrease in the magnitude of poor and the number of poor in the Philippines. However, the result of the study also suggests that the effect of tax reform manifests no differences in terms of the poverty gap measured through the Foster, Greer, and Thorbecke poverty index due.

• The Korean Journal of Physiology and Pharmacology
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• 제1권4호
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• pp.385-392
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• 1997

The phospholipase C (PLC)-mediated intracellular signal transduction pathway is considered to be involved in the regulation of blood pressure. However, little information is available concerning the distributional and functional significance of PLC in the genetic hypertensive rats. As the first step of knowing the role of PLC on hypertension, we investigated the distribution of 6 PLC isozymes $(PLC-{\beta}1,\;-{\beta}3,\;-{\beta}4,\;-{\gamma}1,\;-{\gamma}2\;and\;-{\delta}1)$ in the heart and brain, which are concerned with hypertension, in the normotensive Wistar-Kyoto rat (WKY) and spontaneously hypertensive rat (SHR) using the western blotting and immunocytochemistry. The immunoreactivities of PLC isozymes in brain were detected, but there were no distributional and quantitative differences between the WKY and SHR. In the heart, but the immunoreactivities to $PLC-{\beta}1$ and $-{\gamma}2$ in the SHR were higher than those in WKY. In immunocytochemistry to confirm these western blotting data, $PLC-{\beta}1$ and $-{\gamma}2$ were localized in cardiac myocytes and the intensities of immunoreactivity in SHR were stronger than that in WKY. These results suggest that $PLC-{\beta}1$ and $-{\gamma}2$ would have possibility to concern with the establishment of spontaneous hypertension.

• 한국언어정보학회:학술대회논문집
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• 한국언어정보학회 2002년도 Language, Information, and Computation Proceedings of The 16th Pacific Asia Conference
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• pp.348-357
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• 2002

This paper discusses constraints on grammaticalization, a primarily diachronic process through which lexical elements take on grammatical functions. In particular, it will argue that two constraints on this process, namely Persistence and Lwering, explain the different distributional patterns of time-relationship adverbs in Japanese, Korean, English and German. Furthermore, it will suggest that the distributional difference between Japanese and Korean time-relationship adverbs is not an isolated phenomenon but is a reflection of the overall semantic typological differences between the two languages in the sense of Hawkins (1986).

• 한국환경과학회지
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• 제19권4호
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• pp.415-425
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• 2010

The purpose of the present study was to analyze the vegetation structure and distributional characteristics of Abies koreana forests in Mt. Halla, and to provide basicdata for an ecological study on Abies koreana in Mt. Halla. The results of the analysis showed that the mean importance percentage(M.I.P,) of Abies koreana in the Youngsil and Bangaeoreum and the Azalea field were 28.3%, 23.6%, and 46.4%, respectively. The ratios of DBH (diameter at breast height) to height were similar in all region, except in the Azalea field, where Abies koreana of various ages, both young and old, were found. The species diversity (H) of the upper and lower layers in the Youngsil and Bangaeoreum and in the Azalea field were 0.625 and 0.810, 0.731 and 0.848, and 0.342 and 0.757, respectively. A total of 52 community were distributed at locations higher than 1,300m above sea level. The proportions of each community in the whole Abies koreana forest were 56.5%(Azalea field), 11.0% (Youngsil trail at 1,550-1,650 m above sea level), and 8.1%(Janggumok and Kundurewat region). The total area of the Abies koreana forest was calculated to be 795.3ha by combining all the areas of each community. An Abies koreana forest with the largest area was found at locations 1,500-1,600 m above sea level, taking up 38.8% of the total Abies koreana forest area. For the slopes of the distributional area of Abies koreana, 46.1%(highest proportion) of the total area was $10\sim25^{\circ}$, and for the azimuth of the distributional area, 17.4%(the highest proportion) of the total area was $0-45^{\circ}$. The vegetation structure showed large differences between areas. It was found, however, that the distribution was mostly in the areas with a relatively gentle slope. It is suggested that research be done to forecast the possible changes in the differences in the vegetation structures between different areas caused by climate changes. In addition, there is a need to monitor the Abies koreana and alpine plants in the subalpine zones of Mt. Halla, which are sensitive to climate change, to obtain the basic data that are necessary for the protection and maintenance of the ecosystem.

• The Korean Journal of Ecology
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• 제8권2호
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• pp.89-98
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• 1985

Correlations between horizontal distributions of bamboos (Bambusaceae) in the Korean peninsula and environmental factors were studied using taxanomic and geographical literatures, both old and current. The vertical distributions of bamboos on Mt. Chiri were also studied, and environmental factors limiting horizontal and vertical distributions were compared. There are 18 species of bamboos (belonging to 5 genera) distributed in the Korean peninsula. The distributional range of each genus were distinct, although overlapped. Northern limit of bamboos of any species was marked by the line connecting Paikryung Island (124。40'E, 38。00'N), Mt. Changsoo, Mt. Myungji, Mt. Myohyung and Myungchum (129。40'E, 41。10'N). The optimum range of bamboos was concluded to be restricted to several southern province, with annual precipitation over 1,200 mm. The limiting factors on the distribution were inferred to be low temperature and duration of it. Mean daily minimum temperature of January and the number of days with daily mean temperatures below zero during January showed close associations with the distributional range, and an environmental factors favouring the distributrion of bamboos appeared to be vicinity of warm sea current, deep and extended snow acculation and southern exposure. The vertical distribution of bamboos on Mt. Chiri was limited by low temperature, unfavorable topographic and edaphic conditions caused by steep slope. Difference in the vertical limits between SE and NW slopes are caused by the differences in temperature and precipitation between the slopes. Bamboos were more abundant in valleys than on the ridge, apparently because the deeper snow in the valleys protected the plants from low temperature, heavy winter winds and desiccation.

• 사상체질의학회지
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• 제23권2호
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• pp.230-239
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• 2011

1. Objectives: The purpose of this study was to find out the distributional characteristics of dyspepsia according to Sasang Constitution. 2. Methods: The medical records of 108 subjects who have received prescriptions and diagnosis of Sasang constitution from June 2007 to April 2009 at a Korean Medical clinic in Seoul were reviewed. General factors and the frequency of the prescriptions according to Sasang constitution are compared and analyzed. 3. Results: Among the 108 subjects, 57(52.78%) persons were Soyangin, 27(25.00%) Taeumin, and 24(22.22%) Soeumin. The frequencies of the prescriptions of interior and exterior disease were compared. Exterior disease(89.47%) was higher than interior disease in Soyangin and interior disease was higher than exterior disease in Taeumin(88.89%) and Soeumin(91.67%). (p-value<0.001) The most common disease was Mangeum-syndrome(73.68%) of exterior disease in Soyangin, Dry-febrile symptom(88.89%) of interior disease in Taeumin and Taeum-syndrome(66.66%) of interior disease in Soeumin. 4. Conclusion: There were significant differences on the distribution of dyspepsia in interior or exterior disease according to Sasang Constitution.

• 해양환경안전학회지
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• 제15권3호
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• pp.179-185
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• 2009

마산만 조간대에서 서식하는 해조류 군집의 종조성 및 분포패턴을 2007년도에 계절별로 조사하였다. 조사기간 동안 총 42종의 해조류가 서식하였으며, 이 중 녹조류 5종, 갈조류 8종, 그리고 홍조류가 29종으로 나타났다. 우점종은 Enteromorpha linza, Ulva pertusa, Sargassum thunbergii, Gelidium amansii, G. divaricatum, Corallina pilulifera, Gracilaria textorii, 그리고 Polysiphonia morrowii으로 나타났다. 특히 우점종들은 수직분포가 뚜렷하였는데, 조간대 상부에는 U. pertusa, G. divaricatum가, 중부에는 E. intestinalis, E. linza, S. thunbergii, G. divaricatum이 우점하였다. 한편 하부에는 U. pertusa, Undaria pinnatifida, S. thunbergii, G. amansii, G. divaricatum, C. pilulifera이 주로 출현하였다. 조사기간 동안 출현한 출현종수는 계절 및 정점에 따라 변하였다. 겨울에 가장 많은 38종이 출현하였으며, 가을에는 28종으로 가장 적었다. 정점별로는 정점 4, 6에서 가장 많았으며, 정점 1, 2에서 가장 낮게 나타났다. 해조류 군집의 공간적 분포를 파악하기 위한 군집분석을 이용한 수지도 및 MDS 분석 결과에서는 해조류의 종조성 및 현존량이 각 정점의 지형적인 차이 및 조류, 해수의 움직임과 같은 물리해양학적인 특징에 의한 것으로 나타났다.

• 한국산학기술학회논문지
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• 제9권3호
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• pp.580-586
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• 2008

본 연구는 재료 특성에 있어 미세구조의 연속성을 예측한 것이다. 예측은 미세구조에서 사용되는 제작 재료의 동적 응답 분포를 측정해서 만들어졌다. 분포되는 재료 특성들이 미세구조의 기계적 성능을 평가하는데 사용될 때, 미세구조에 대한 컴퓨터 시뮬레이션과 실험결과의 차이를 줄일 수 있고 신뢰성 설계가 이루어질 수 있다.