K-means 클러스터링 방법과 유사도 측정 기반의 채팅 말뭉치 반자동 확장 방법

안재현,고영중 한국정보과학회 2019 정보과학회논문지 Vol.46 No.5

본 논문에서는 영화 자막, 극 대본과 같이 대량의 발화 데이터를 이용하여 채팅 말뭉치를 반자동으로 확장하는 방법을 제안한다. 채팅 말뭉치 확장을 위해 미리 구축된 채팅 말뭉치와 유사도 기법을 이용하여 채팅 유사도를 구하고, 채팅 유사도가 실험을 통해 얻은 임계값보다 크다면 올바른 채팅 쌍이라고 판단하였다. 본 논문에서 제안하는 것은 형태소 단위 임베딩 벡터와 합성곱 신경망 모델을 이용하여 발화 단위 표상을 생성하는 것이다. 그리고 반자동 구축 모델의 속도를 개선하기 위해서 K-means 클러스터링 방법을 적용하여 채팅 말뭉치를 군집, 계산량을 줄일 것을 제안한다. 그 결과 기본 발화 단위 표상 생성 방법인 TF를 이용하는 것보다 정확률, 재현율, F1에서 각각 5,16%p, 6.09%p, 5.73%p 각각 상승하여 61.28%, 53.19%, 56.94%의 성능을 도출하였다. 그리고 속도 개선을 위해 발화를 클러스터링하여 속도 면에서도 103배 향상된 채팅 말뭉치 반자동 구축 모델을 구축할 수 있었다. In this paper, we proposed a semi-automatic expansion method to expand a chatting corpus using a large amount of utterance data from movie subtitles and drama scripts. To expand the chatting corpus, the proposed system used previously constructed chatting corpus and a similarity measure. If the similarity is calculated between a previously constructed chatting corpus and the input utterance was greater than a threshold value set in the experiment, the input utterance was selected as a new chatting utterance, that it is a correct chatting pair. We used morpheme-unit word embeddings and a Convolutional Neural Networks to efficiently calculate the similarity of the utterance embedding. In order to improve the speed of the semi-automatic expansion process, we proposed to reduce the amount of computation by clustering chat corpus by K-means clustering algorithm. Experimental results showed that the precision, recall, and F1 score of the proposed system were 61.28%, 53.19%, and 56.94%, respectively, which was 5.16%p, 6.09%, and 5.73%p higher than that of the baseline system. The term frequency and the speed of our system were also about a hundred times faster.

브리징 통신서비스의 개념과 경영전략

안재현,차경천,전덕빈,박명환 대한산업공학회 2001 대한산업공학회 춘계학술대회논문집 Vol.2001 No.4

CUP 챠트를 이용한 통신 서비스 실패 원인 분석

안재현,권재원,김명수,이동주,이상윤,한상필 대한산업공학회 2001 대한산업공학회 춘계학술대회논문집 Vol.2001 No.4

2012년부터 2016년까지 대전지역 대학 한방병원 안이비인후피부과 외래환자에 대한 연도별, 계절별 경향성 분석

안재현,정현아,An, Jae-Hyun,Jung, Hyun-A 대한한방안이비인후피부과학회 2017 한방안이비인후피부과학회지 Vol.30 No.2

Objectives : The study designed to analyze annual, seasonal tendency of outpatients in ophthalmology & otolaryngology & dermatology clinic of Korean Medical hospital from 2012 to 2016. Methods : We investigated annual, seasonal population-social characteristics such as sex or age, departmental characteristics such as ophthalmology, otolaryngology, dermatology, many others, main diagnosis, cost characteristics of treatment period and frequency of treatment those who were received treatment as outpatients in Dunsan Korean Medical Hospital ophthalmology & otolaryngology & dermatology clinic from March 2012 to March 2016. The data was obtained from EMR chart, and statistical analysis was performed using SPSS 19.0. Results : We analyzed population-social characteristics, utilization of new patients in the year, in the season, and we obtained various results. Conclusions : In the analysis of annual, seasonal utilization patterns that outpatients offered in ophthalmology & otolaryngology & dermatology clinic of Korean Medical hospital from 2012 to 2016, the report draws 3 different conclusions.

Determinants of New Service Performance in the Telecommunications Industry

안재현,이동주,이상윤 대한산업공학회 2003 대한산업공학회 춘계학술대회논문집 Vol.2003 No.5

시나리오 접근법을 통한 전략적 CSR과 자선적 CSR의 인지적 해석이 조직매력도와 입사제안 수용의도에 미치는 영향

안재현,권석균 한국윤리경영학회 2019 윤리경영연구 Vol.19 No.2

CSR activities have been shown critical to the sustainable growth of the firm in a number of studies. However, only few studies have investigated how CSR is perceived and interpreted by organizational members, which are internal stakeholders, compared to the macro level studies. In particular, strategic CSR has never been studied empiri- cally on the effectiveness of its cognitive interpretation by organizational members. This study hypothesized that based on signal theory, social identity theory and beha- vioral ethics, philanthropic and strategic CSRs would increase organizational attracti- veness and strengthen job-offer acceptance intention through the cognitive inter- pretation processes of the CSR activities. Empirical data were collected and analyzed from 185 college students who were prospective job applicants of the firm. Given that college students have little job experience, we adopted scenario approach which is expected to help students vividly perceive and interpret CSR activities of the firm. Developed are three types of scenarios: strategic CSR, philanthropic CSR, and no CSR scenarios. After reading each scenario, students responded to the questionnaires regarding their cognitive interpretation of perceived CSR activities and moral awareness, and then, the attractiveness of the organization and the intention to accept job-offer subsequently. The results of the analysis showed statistically significant differences in CSR per- ceptions and moral awareness between CSR types. In addition, the cognitive pro- cesses were significantly more active in the organizational type of strategic CSR than philanthropic CSR. Those cognitive process variables exerted positive effects on organizational attractiveness and job-offer acceptance intention. Based on the empirical findings, managerial implications and future research directions were suggested. CSR이 기업 내부의 이해관계자인 조직구성원에게 어떠한 메커니즘을 통해 인식되고 해석되는지를 규명한 연구는 거시수준 연구에 비해 상대적으로 미흡하다. 특히 전략적 CSR 인식의 효과성에 대한 실증연구는 거의 없는 실정이다. 이에 본 연구는 신호이론 및 사회정체성 이론, 행동윤리학적 접근을 토대로 지각된 CSR 유형이 CSR 인지과정을 매개로 조직 친화적 태도인 조직매력도와 입사제안 수용의도를 향상시킬 것으로 가설을 설정하였다. 연구 가설을 검증하기 위해 조직의 다양한 이해관계자 중 조직구성원을 가정하여 잠재적 지원자인 대학생 185명을 대상으로 실증 분석하였다. 대학생들의 경우 조직에 대한 경험이 거의 없다는 점을 감안하여 독립변수인 CSR 유형을 전략적 CSR과 자선적 CSR 시나리오, CSR을 실행하지 않는 시나리오로 구분하여 접근하였다. 시나리오 접근법을 통해 응답자들은 자신의 주관적 CSR에 대해 응답하지 않고 자신에게 할당된 세 가지 CSR 시나리오를 읽고 각 CSR 유형에 대해 평가하도록 설계하였다. 분석결과 CSR 유형에 따라 조직 친화적 태도에 통계적으로 유의한 차이가 있는 것을 확인하였다. 더불어 가설과 달리 자선적 CSR을 실행하는 조직에 비해 전략적 CSR을 실행하는 조직에서 CSR 인지과정이 더욱 활성화 되었으며, 조직 친화적 태도에 긍정적인 영향을 미칠 수 있음을 확인하였다. 부트스트래핑을 통한 매개효과검증 결과에서도 자선적 CSR을 실행하는 기업 대비 전략적 CSR을 실행하는 기업에서 오히려 CSR 인지과정이 조직 친화적 태도와의 관계를 더 강하게 매개하는 것으로 나타났다. 이러한 분석결과를 바탕으로 CSR 유형에 대한 인지적 해석이 조직 친화적 태도 형성에 미치는 시사점 등을 제시하였다.

Cytomegalovirus-Specific Immunotherapy for Glioblastoma Treatments

안재현,안스데반,Christopher Shin,Yeo Song Kim,박재성,전신수 대한뇌종양학회 2022 Brain Tumor Research and Treatment Vol.10 No.3

Over the last two decades, numerous studies have investigated the presence of human cytomegalovi- rus (CMV) within glioblastoma or gliomas; however, the results are severely conflicting. While a few re- searchers have suggested the potential benefits of cytotoxic T lymphocyte or dendritic cell-based vac- cines for recurrent or newly diagnosed glioblastoma patients, several studies did not at all agree with the existence of CMV in glioblastoma cells. In this review, we summarized the conflicting results and issues about the detection of CMV in glioblastoma or glioma patients. We also provided the clinical data of published and unpublished clinical trials using CMV-specific immunotherapy for glioblastomas.

지하공간 침수피해 상황 및 방지대책

안재현,박무종,An Jae-Hyeon,Park Mu-Jong 한국수자원학회 2006 물과 미래(한국수자원학회지) Vol.39 No.8

독일 신 포장재법

안재현,홍석진,An, Jae-Hyeon,Hong, Seok-Jin (사)한국포장협회 2019 包裝界 Vol.312 No.-

발병 3개월이 지난 재발성 돌발성 난청 치험 1례

안재현,정현아,An, Jae-Hyun,Jung, Hyun-A 대한한방안이비인후피부과학회 2016 한방안이비인후피부과학회지 Vol.29 No.2

Objectives : The purpose of this study is to report the Korean medical treatment on sudden sensorineural hearing loss(SSNHL). Methods : The patient who has been diagnosed SSNHL had symptoms with hearing loss, tinnitus, and aural fullness. The patient was received outpatient to Dunsan oriental hospital for 3 months and was treated with oriental medicine(acupuncture, herbal-medicine, converting of Hominis placenta, warm needling and vapor treatment). Two approaches were used in order to evaluate the effect of the treatment. The hearing recovery was measured with pure tone audiometry, and the decrease of tinnitus and aural fullness was identified by patient's subjective expression. Results : The patient has his hearing restored fully and the symptoms of SSNHL accompanied with adjunctive symptoms including tinnitus and aural fullness were improved.Conclusions : This study shows that the Korean medical treatment effects on the SSNHL.