다양한 언어적 자질을 고려한 발화간 유사도 측정 방법

이연수,신중휘,홍금원,송영인,이도길,임해창,Lee, Yeon-Su,Shin, Joong-Hwi,Hong, Gum-Won,Song, Young-In,Lee, Do-Gil,Rim, Hae-Chang 한국음향학회 2009 韓國音響學會誌 Vol.28 No.1

본 연구는 예제 기반 대화 시스템에서 응답을 결정하기 위한 핵심 요소 기술 중 하나인 발차간 유사도 측정 방법의 개선에 대해 논한다. 일반적인 문장간 유사도 측정과는 달리, 대화에서 발차간 유사도 측정은 단어 분포간 유사도 뿐만 아니라, 문형, 시제, 긍/부정, 양태등 대화 자연스러움을 결정하는 문장의 다양한 언어적 요소 역시 중요하게 고려되어야 한다. 그러나 기존 연구에서는 이에 대한 고려가 부족 했던 것이 사실이며, 따라서 본 연구에서는 개선 방안으로서 발화의 형태적 유사성 뿐 아니라 다양한 언어적 자질들을 분석하고 이를 유사도 측정에 반영하여 정확도를 향상시키는 새로운 유사도 측정 방법을 제안한다. 또한, 발차의 자질별 유사도를 고려함으로써, 한정된 수의 예제들의 활용도를 높일 수 있는 방법을 제안하였다. 실험 결과 제안하는 방법이 기존 방식에 비해 10%p 이상 정확도 성능 향상이 있었다. This paper presents an improved method measuring inter-utterance similarity in an example-based dialogue system, which searches the most similar utterance in a dialogue database to generate a response to a given user utterance. Unlike general inter-sentence similarity measures, the inter-utterance similarity measure for example-based dialogue system should consider not only word distribution but also various linguistic features, such as affirmation/negation, tense, modality, sentence type, which affects the natural conversation. However, previous approaches do not sufficiently reflect these features. This paper proposes a new utterance similarity measure by analyzing and reflecting various linguistic features to improve performance in accuracy. Also, by considering substitutability of the features, the proposed method can utilize limited number of examples. Experimental results show that the proposed method achieves 10%p improvement in accuracy compared to the previous method.

무치악자의 하악전방운동시 관절융기와 과두운동로에 관한 컴퓨터 분석

이연수,박남수,최대균,Lee Yeoun-Soo,Park Nam-Soo,Choi Dae-Gyun 대한치과보철학회 1992 대한치과보철학회지 Vol.30 No.3

The objective of this study was to compare the condylar path and the anterior angle of articular fossa and to analyze the pattern of condylar path in edentulus patients. Nineteen male and female edentulous patients with normal masticatory system ranging in age 42 to 78, without present symptoms and any history of TMJ disturbance were selected for this study. On the computer analysis on the transcranial radiographs of the TMJ, the angle of slope of articular eminance and condylar path to the Frankfort Horizontal Plane and the height of glenoid fossa was measured respectively, and stuied their interrelationship comparatively. Obtained results were asfollows. 1. The angle of the slope of articular eminence averaged 37.28 degree. and there was no significant difference between the right and left side. 2. The condylar path angle averaged 29.05 degree and there was no significant difference between the right and left side. 3. The height of the glenoid fossa averaged 8.11 mm and there was no significant difference between the right and left side. 4. The sequence of the frequence of condylar movement patterns were concavex curve(39.5% ), 'S' shape curve(34.2%), reverse 'S' shape(15.8%) and convex curve(10.5%). 5. The horizontal distance of the point of the changed curve of the condylar path averaged 2.91 mm. 6. The height of glenoid fossa was highly correlated to the slope of articular eminence and relatively highly correlated to tile condylar path and the condylar path was closely correlated to the slop of articular eminence.

Otto 결합 구조 기반의 표면 플라즈몬 공명 칩 제작

이연수,김정무,Lee, Yeon-Su,Kim, Jeong-Mu 한국광학회 2016 광학과 기술 Vol.20 No.3

항공 라이다와 딥러닝 기반 도시 수목 면적 지도를 이용한 개별 도시 수목 탐지

이연수,손보경,임정호,Yeonsu Lee,Bokyung Son,Jungho Im 대한원격탐사학회 2023 대한원격탐사학회지 Vol.39 No.5

Urban trees play an important role in absorbing carbon dioxide from the atmosphere, improving air quality, mitigating the urban heat island effect, and providing ecosystem services. To effectively manage and conserve urban trees, accurate spatial information on their location, condition, species, and population is needed. In this study, we propose an algorithm that uses a high-resolution urban tree cover map constructed from deep learning approach to separate trees from the urban land surface and accurately detect tree locations through local maximum filtering. Instead of using a uniform filter size, we improved the tree detection performance by selecting the appropriate filter size according to the tree height in consideration of various urban growth environments. The research output, the location and height of individual trees in human settlement over Suwon, will serve as a basis for sustainable management of urban ecosystems and carbon reduction measures.

장기안심주택 공급 실효성과 거주의사 평가에 관한 연구

이연수,류훈,박성진,강준모,Lee, Youn Soo,Ryu, Hoon,Park, Sung Jin,Kang, Jun Mo 대한토목학회 2014 대한토목학회논문집 Vol.34 No.3

This study is conducted to evaluate the supply effectiveness of the Long-term Secured Public Rental Housing (LSPRH) program implemented by the City of Seoul since March, 2012. To estimate the residential intention of potential applicants for the housing program, two logistic regression models of residential intention are estimated based on the residential characteristics of real residents. The purpose of this model estimation is to find out factors influencing the supply of LSPRH and thus to suggest the ideas for improving the effectiveness of the rental housing program operation. The analysis result shows that financial condition, income level, and public support are the major determinants for selecting LSPRH. It is also revealed that those who are currently living in rental housing or living in a house more expensive than those in nearby areas have higher residential intention for the LSPRH program. The result also presents that some problems associated with the traditional rental housing programs - such as visually recognizable low-quality exterior building design or the concentration of rental housing on limited spots - could be solved by this new type of public housing program. Lastly, one interesting finding different from previous research is that people with the intention to move into either traditional rental housing or LSPRH do not necessarily prefer a more spacious house than their current rental house.

2012년 한강 서울통과 구간의 식물플랑크톤 군집 특성

이연수,김태희,이만덕,기장서,Lee, Yeon-Su,Kim, Taehee,Lee, Man-Duck,Ki, Jang-Seu 한국환경생물학회 2020 환경생물 : 환경생물학회지 Vol.38 No.2

This study reported on the phytoplankton community and seasonal changes in the Seoul passage section and downstream in the Han River in 2012. Field samples were collected monthly from the upper (Paldang), middle (Cheongdam), and downstream(Seongsan) areas of the Seoul passage section. Water temperature, DO, pH, and conductivity were measured at each station. All environmental factors measured were recorded similarly at the three stations. The water temperature ranged from 2 to 30℃ and the dissolved oxygen ranged from 4.8 to 9.1 mg L^-1, showing typical patterns of temperate regions. The phytoplankton cell concentrations ranged from 990 cells mL^-1 (Paldang, December) to 2.9×10⁴ cells mL^-1 (Seongsan, March), and the chlorophyll-a content showed similar patterns to the cell numbers. The phytoplankton community was comprised of 75 genera and 95 species, including 37 diatoms, 29 Chlorophyta, 11 cyanobacteria, and two dinoflagellates. The number of species that appeared seasonally varied greatly, from nine species (Paldang, May) to 35 species (Cheongdam, December). Diatoms were the most dominant in all stations and seasons, except in summer. In contrast, chlorophytes and cyanobacteria showed sporadic high numbers in the summer and fall seasons. Four diatoms Stephanodiscus hantzschii f. tenuis, S. hantzschii, Fragilaria sp., and Aulacoseira spp., a chlorophyte Actinastrum hantzschii, and a cyanobacterium Microcystis sp. were each present in proportions greater than 10%. This study provides fundamental data from phytoplankton communities and environmental factors in the Han River for understanding water quality for long-term environmental monitoring.

제 2 발표장 : 구형개재물을 갖은 이상재료의 파괴역학적 고찰

이연수,윤희석 ( Youn Soo Lee,Hi Seak Yoon ) 한국복합재료학회 1994 한국복합재료학회 학술발표대회 논문집 Vol.- No.2

폐의 비정형 유암종의 세침흡인 세포학적 소견 - 2예 보고 -

이연수,박경신,최영진,강석진,김병기,심상인,Lee, Youn-Soo,Park, Gyeong-Sin,Choi, Young-Jin,Kang, Seok-Jin,Kim, Byung-Kee,Shim, Sang-In 대한세포병리학회 1997 대한세포병리학회지 Vol.8 No.1

Two cases of pulmonary atypical carcinoid tumor were diagnosed by fine needle aspiration cytology. Although the cytologic features of atypical carcinoid tumor have been relatively well described, it is easy to confuse atypical carcinoid tumor with typical carcinoid tumor, small cell carcinoma and adenocarcinoma of the lung. Atypical carcinoid tumor has been recognized as a distinct variant of pulmonary neuroendocrine carcinoma, with characteristic histopathologic and clinical features that separate it from both carcinoid and small cell carelnoma. The distinction of atypical carcinoid tumor from small cell carcinoma has important prognostic and therapeutic implications. The cytologic characteristics of atypical carcinoid tumor included polygonal to fusiform cells with a variable amount of lacy cytoplasm, oval nuclei with coarsely dispersed chromatin and frequent nucleoli, and mild pleomorphism. The malignant cells were arranged either in acinus-like clusterg or in epithelial sheets.

교육시설의 임대형 민자사업 활성화 방향

이연수,Lee, Yeon-Su 한국교육시설학회 2006 교육시설 Vol.13 No.3

공간·지리적 자료의 공간자기상관성을 최소화하는 공간샘플링 기법에 관한 연구

이연수,이만출,나경범,강준모,Lee, Youn Soo,Lee, Man Choul,Lah, Kyung Beom,Kang, Jun Mo 대한토목학회 2014 대한토목학회논문집 Vol.34 No.4

The study focused on analyzing spatial sampling by minimizing autocorrelation of spatial based on spatial and geographical data. The study concluded two different ways of minimizing autocorrelation. First, it was important to use suitable spatial sampling method to alienate spatial autocorrelation from spatial or geographical data. The shear distribution rate of public transportation in Seoul resulted in high rate of autocorrelation. However, the study showed samples eliminated autocorrelation when samples were extracted with reasonable distance(above 400m) apart. Without spatial sampling the distortion of spatial data leads to false results; therefore, spatial sampling is indispensable. Second, factors which fluctuates shear distribution of public transportation spatial sampling changed before and after spatial sampling. This was caused by incapable of controling inherent spatial autocorrelation of the data.