• 제목/요약/키워드: Belief State Space

검색결과 10건 처리시간 0.019초

Hidden Information State 대화 관리자를 이용한 멀티모달 대화시스템 (Multimodal Dialog System Using Hidden Information State Dialog Manager)

  • 김경덕;이근배
    • 대한음성학회:학술대회논문집
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    • 대한음성학회 2007년도 한국음성과학회 공동학술대회 발표논문집
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    • pp.29-32
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    • 2007
  • This paper describes a multimodal dialog system that uses Hidden Information State (HIS) method to manage the human-machine dialog. HIS dialog manager is a variation of classic partially observable Markov decision process (POMDP), which provides one of the stochastic dialog modeling frameworks. Because dialog modeling using conventional POMDP requires very large size of state space, it has been hard to apply POMDP to the real domain of dialog system. In HIS dialog manager, system groups the belief states to reduce the size of state space, so that HIS dialog manager can be used in real world domain of dialog system. We adapted this HIS method to Smart-home domain multimodal dialog system.

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Efficient LDPC-Based, Threaded Layered Space-Time-Frequency System with Iterative Receiver

  • Hu, Junfeng;Zhang, Hailin;Yang, Yuan
    • ETRI Journal
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    • 제30권6호
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    • pp.807-817
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    • 2008
  • We present a low-density parity-check (LDPC)-based, threaded layered space-time-frequency system with emphasis on the iterative receiver design. First, the unbiased minimum mean-squared-error iterative-tree-search (U-MMSE-ITS) detector, which is known to be one of the most efficient multi-input multi-output (MIMO) detectors available, is improved by augmentation of the partial-length paths and by the addition of one-bit complement sequences. Compared with the U-MMSE-ITS detector, the improved detector provides better detection performance with lower complexity. Furthermore, the improved detector is robust to arbitrary MIMO channels and to any antenna configurations. Second, based on the structure of the iterative receiver, we present a low-complexity belief-propagation (BP) decoding algorithm for LDPC-codes. This BP decoder not only has low computing complexity but also converges very fast (5 iterations is sufficient). With the efficient receiver employing the improved detector and the low-complexity BP decoder, the proposed system is a promising solution to high-data-rate transmission over selective-fading channels.

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조선시대 상류주택 실내공간의 디자인 개념에 관한 연구 (A Study on the Design Concept of Interior space in Korean Traditional Houses)

  • 오혜경
    • 한국실내디자인학회논문집
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    • 제13호
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    • pp.3-10
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    • 1997
  • The purpose of this study was to identify the design concepts embedded in our traditional interior space. The majority of this research was achieved through literature review as well as examining traditional Korean houses. The major findings were summarized as follows : First, traditional Korean interior space is contemplative. This is created possible by the careful placement of indispensable furnitures and accessaries resulting in an abundance of unoccupied space. Therefore, the room assumes a peaceful atmosphere which calms the mind and creates a tranquil setting. To enjoy the placidity of Korean interior space a humble demeanor and contemplative thought are required. Next, traditional Korean interior space is modest. This is created by the moderate proportions that do not challenge human scale. Traditional Korean interior space does not dominate its surroundings but rather conforms with them. This contrasts with traditional western houses which utilizes an overbearing scale sacrificing intimate space. Thirdly, traditional Korean interior space is raw. In other words, the materials used in house retain their self-evident natural state and are not artifically manipulated to hide their inherent properties. The fundamental conceptual belief that interior space should not defy nature but instead become part of it. Lastly, traditional Korean interior space is not decorative Rooms are not congested with frivolous aesthetics. Although this does not immediately attract the people's attention, eventually the interior space establishes a unique line of communication with them.

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2차원 캐비티 유동에서 다중 정상 해에 관한 연구 (Multiple steady state solutions in a two dimensional cavity flow)

  • 조지룡;홍상표;김근오;김윤택
    • 한국전산유체공학회:학술대회논문집
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    • 한국전산유체공학회 1999년도 추계 학술대회논문집
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    • pp.127-138
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    • 1999
  • 본 연구에서는 2 차원 캐비티 유동에서 경계조건 부여 방법의 차이에 따른 유체유동의 이력이 최종적인 정상상태에 미치는 효과를 수치실험을 통하여 관찰하였다. 그 결과 유동의 Reynolds 수가 작은 경우는 유동장이 가지는 이력이 시간의 경과와 함께 소멸하여 하나의 정상유동 상태를 가지는데 반하여, 큰 Reynolds 수에서는 유동장 이력이 소멸하지 않고 유지됨으로 인하여 다수의 정상유동 형태가 나타남이 확인이 되었다. 엄밀한 이론적 해석은 현재 이루워지지 않았으나 유체 운동량의 증가에 따라 Navier-Stokes 방정식의 비선형성이 영향을 미치고 있다고 여겨진다.

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렌조 피아노(Renzo Piano)의 미술관건축 공간구성 특성연구 (A Study on the Characteristics of Space organization of Renzo Piano's Museum Projects)

  • 이성훈
    • 한국실내디자인학회논문집
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    • 제17호
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    • pp.65-72
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    • 1998
  • This study intends to analyze the various spatial structures and characteristics of the museum based on the two of the Renzo Piano's recent projects Menil Collection '||'&'||' Museum and Beyeler Foundation Museum Which defined the direction of the "Third Generation" in museum architecture with reference to the quality of spatial experience and design applications. Comparison and analysis were done on the basic spatial organization floor layout accessibility exhibition area lighting plan and circulation between the two museum. Through the itemized common characteristics of the museum the architect's proposal on meaning and direction of the new museum architecture can be viewed. The contemporary museums distinguish themselves quite clearly from their predecessors and this applies both to their own form and to their spatial organization. As the public demands and requests toward the museum building facility expand everyday the architect must respond by providing multiple types of space where people can experience different atmosphere in each area. One concept he used to create multi experienced area was manipulation of the natural light using by the state-of-the-art techniques of the light filtering system and multi-layering roof system to protect the valuable collections against the direct sunlight. But mainly it was to prove his strong belief in "architecture of light" by creating space with minimized meaning by purposely distinguished area in order to provide maximum support to the physical value of the collection " The connection with nature" is another concept which Piano used to provide the public a tranquil experience through out the architecture which engages in a lively dialogue with art. In spatial organization Piano concerned on functionality which not only concentrated on the visitor's point of view but also on the museum staff's comfort. Unlkie the traditional museum he alternates various size of exhibition areas for spatial hierarchy. Specially the spatial flexibility that the temporary exhibition areas are able to be expanded to the permanent exhibition areas by adjoining t재 spaces differentiate Piano's new museum from the rest. museum from the rest.

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Student Motivation and Interests as Proxies for Forming STEM Identities

  • Campbell, Todd;Lee, Hyon-Yong;Kwon, Hyuk-Soo;Park, Kyung-Suk
    • 한국과학교육학회지
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    • 제32권3호
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    • pp.532-540
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    • 2012
  • This research investigated the motivation and interests of a sample of predominately-underrepresented populations to better understand whether informal STEM learning experiences offer support for developing STEM identities. A valid and reliable three-section self-reporting survey was administered to 169 secondary students as the primary data source. Identity was used as a theoretical lens along with descriptive statistics to reveal students' perceived benefits of the informal STEM learning experience, a Mathematics, Engineering, Science Achievement (MESA) program in the western U.S., for improving their understanding of science, mathematics, and engineering concepts, increasing their interest in science, mathematics, and engineering careers, and increasing their belief of the importance of these STEM disciplines. In summary, the findings emerging, considered alongside current identity research, suggest that informal STEM learning experiences offer students from underrepresented STEM populations the space needed for successful STEM identity bids, either for future career pursuits or participation in a STEM literate populace as a non-STEM professional societal member.

조건부 계획수립을 위한 효과적인 그래프 기반의 휴리스틱 (Effective Graph-Based Heuristics for Contingent Planning)

  • 김현식;김인철;박영택
    • 정보처리학회논문지B
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    • 제18B권1호
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    • pp.29-38
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    • 2011
  • 계획 문제 명세로부터 영역-독립적인 휴리스틱을 유도해내기 위해서는 주어진 계획문제에 대한 간략화와 간략화된 계획문제에 대한 해 도출 과정이 요구된다. 본 논문에서는 초기 상태의 불확실성과 비결정적 동작 효과를 모두 포함한 조건부 계획문제를 풀기 위한 새로운 융합 계획그래프와 이것을 이용한 GD 휴리스틱 계산법을 소개한다. 융합 계획그래프는 고전적 계획 문제 풀이를 위한 휴리스틱 계산에 이용되는 간략화된 계획그래프를 조건부 계획문제에 적용할 수 있도록 확장한 자료구조이다. 융합 계획그래프에서는 감지 동작과 비결정적 동작들을 포함한 조건부 계획 문제에 대한 휴리스틱을 얻기 위해, 전통적인 삭제 간략화외에도 감지 동작과 비결정적 동작들에 대한 효과-융합 간략화를 추가로 이용한다. 융합 계획 그래프의 전향 확장과 병행적으로 진행되는 GD 휴리스틱 계산에서는 목표조건들 간의 상호 의존성을 분석하여 전체 목표 집합에 대한 최소 도달비용을 추정할 때 불필요한 중복성을 배제한다. 따라서 GD 휴리스틱은 기존의 겹침 휴리스틱보다 더 적은 계산시간 을 요구하면서도, 최대 휴리스틱이나 합산 휴리스틱보다 더 높은 정보력을 가진다는 장점이 있다. 본 논문에서는 GD 휴리스틱의 정확성과 탐색 효율성을 확인하기 위한 실험적 분석에 대해 설명한다.

경상남도 남해안 마을숲의 문화경관 특성 연구- 남해군과 통영시를 중심으로 - (A Study on the Cultural Landscape Characteristics of Village Forest Sites in the Southern Coast - A Case Study of Namhae-Goon and Tongyoung City -)

  • 임의제;소현수;이수동
    • 한국전통조경학회지
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    • 제30권3호
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    • pp.29-41
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    • 2012
  • 본 연구는 마을숲 연구에서 심도있게 다루어지지 않았던 해안 마을숲의 문화경관 특성을 파악하고, 그 가치와 정체성을 규명하고자 하였다. 경상남도 소재의 남해안 마을숲 10개소를 연구 대상으로 진행하였으며, 문헌연구, 현장조사, 인터뷰를 통해서 남해안 마을숲을 고찰하였다. 연구를 통하여 밝혀진 남해안 마을숲의 문화경관 특성은 문화적 특성, 실용적 특성, 경관적 특성으로 요약할 수 있다. 첫째, 내륙 마을숲이 유교적 배경이 강한데 비해 민촌에 조성된 해안 마을숲은 민간신앙의 영향이 두드러진 마을 공동체의 정신적 공간이다. 둘째, 남해안 마을숲은 해안마을이 접한 현실적 문제 해결과 경제적 효율을 우위에 둔 사고와 문화를 반영한 실용적 공간이다. 셋째, 남해안 마을숲은 단순히 수목으로 구성된 숲에 국한하는 것이 아니라, 주변 토지이용을 구성하는 바다부터 마을과 배후 산까지 광역적 범위에서 경관적 정체성이 이해되어야 한다. 본 연구는 그동안 주목받지 못했던 남해안 마을숲의 기초 자료를 구축하고, 내륙 마을숲과 차별화되는 해안 마을숲의 가치를 제고하였음에 의의를 지닌다. 나아가 동해안과 서해안 마을숲으로 연구의 대상을 확장함으로써 각 해안 마을숲의 특성과 차이점을 밝히는 연구가 후속되어야 할 것이다.

대퇴경부 골절 환자의 입원 생활 (The Hospital Life of the Patient with Femoral Neck Fracture)

  • 김경자;지성애
    • 간호행정학회지
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    • 제2권1호
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    • pp.35-56
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    • 1996
  • Nowerdays, the increase of traffic accidents and old age population make the Femoral Neck Fracture(FNF) patients increase. By the improvement of education and standard of living the patients demand better medical service than before. This study is designed to give practical help for the FNF patients by observing their hospital life and establish practical nursing strategies for the FNF patients. For these purposes the Ethnographic Participant Observation was adopted. By this study is focused on the hospital life patient's view. For this end, the field study adopted orthopedic ward in the C University Hospital with 400 beds in Seoul. The object patients of the study were twelve patients. The patients experienced five stages : Embarrassment, Conflict, Stability, Independent, and Extension Stage. The findings and prepared nursing strategies are stated as follows. First, in the Embarrassment Stage they suffered embarrassment, anxiety, pain, they could not do ordinary things. The patients who accidental fractures had anxiety from unfamiliar tests and from hospitalization itself. They lamented that they could not ordinary things, and do nothing but obeying the hospital, and endure the pain. They recognized the changed environment and resigned themselves to life in the ward. In this stage, full openness by the nurses is needed. Second, the attribute of the Conflict Stage were conflict, fear, curiosity, belief, reflection. When they sign the consentment form, they experience conflicts about the possibility of complication, fear of recovery from anesthesia, curiosity about the operation procedure, post - operation state, reflection on their past life, and promise to care for their family members after discharge and keep their religious life faithfully. And they accepted the operation depending on God, believing in modern medicine, and the surgeon. Asking for their changed informations, they expected positive results from the operation. In this stage, an empathic attitude by the nurses is needed. Third, the attribute of the Stability Stage were relief, gratitude, difficulty with excretion, and pain. When they awoke from anesthesia, they felt relief because of a the end of the operation, but they experienced extreme pain, difficulty of excretion in bed. They accepted the changed environment and expected recovery. In this stage, support by the nurses is needed. Fourth, the attributes of the Independence Stage were freedom, exercise, nurturing, anxiety, and discomfort. When they ambulated and exercised, they experienced freedom. They showed exhibited weakness of the digestive organs and discomfort hospital's space, structure, and facilities, the delay of medical certificate issue the lack of prompt response by the medical agents. They ate nurturious food and felt anxiety on the end of hospital life and returning to their ordinary life. They showed the independence of overcoming their environment by increasing exercise and expected their discharges. In this stage, respect by the nurses is needed for the patients to, overcome their environment and prepare for their independence. Fifth, the attributes of the Extension Stage were pessimism, isolation, dissatisfaction, and pain. Accompanied injury and old age made their ward life extend to over seven weeks. They exhibited weariness, melancholy, skeptisis, general pessimistic feeling, and desperation caused by their isolated life. They experienced the digestive discomfort caused by the prolonged medication and psycological pain caused by long-time hospitalization. As a, result, their dissatisfaction on the human, physical, and systematic environments had been increased. They acquired critical power and sought for something to do spending their time. They expected vaguely about the returning of their ordinary life. In this stage, counseling is needed by the nurse to overcome positively their psychological, social, and physical problems. The process of the FNF patient's ward life starts from the dependent state, when they are hospitalized, and gradually progresses to self-fulfillment in order to keep independent life. As a result, the FNF patients showed "Response in Challenge" or "Adaptation in Conflict" through their experiences of social, physical, and psychological difficulties.

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"황제내경(黃帝內經)"의 '허(虛)'와 그 철학적 배경에 대한 연구 (Study of Philosophical Background of '虛' Described in "Huang Di Nei Jing")

  • 이정원;홍무창;배현수;신민규
    • 동의생리병리학회지
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    • 제20권4호
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    • pp.766-783
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    • 2006
  • This study describes philosophical background regarding '虛' in oriental medicine in an effort to understand the relationships among some of the Eastern philosophy in accordance with differentiated meanings in several resources by analyzing examples of '虛' in Huang Di Nei Jing. The various usages of '虛' used in Huang Di Nei Jing are as follows: naming; condition of pulse; emptiness; '太虛' which was referred universal space by Chinese ; insufficiency, lack or scarcity, deficiency ; and the description of vitality, mental faculties. 外丹修煉(training by external substances) had the attitude do that withdraw the death by taking external materials. The meaning of '虛'in 外丹修煉 is similar to that in oriental medicine in terms of deficiency. That is, both 外丹修煉 and the oriental medicine consider that the death and disease are caused by the deficiency of something. However, there also exists difference between 外丹修煉 and the oriental medicine. 外丹修煉 supplements through withdrawal prohibition due to the characteristic of unchangeability and stern or immortal while oriental medicine provides concrete object of deficiency. 精(essence of life), 氣(ki, functional activity), and fe(vitality) not only have been considered as basic component of human body, but they also have been an important subject of health preservation for longevity with health in Taoism and oriental medicine. In oriental medicine, 精 and 氣 have been perceived as physical basis of human body and 神 as controller. 內丹修煉(Training of internal active substances) 掠nds to return to '虛', the early state of life through individual training, and attempts to withdraw death through continuous recurrence. The oriental medicine and 內丹修煉 held great value of 神 among health preservation of 精, 氣, and 神. They seek theoretical basis from philosophical Taoism. However, '虛' in Taoism is different from that in training by internal substances and oriental medicine: '虛' in philosophical Taoism has metaphysical concept which refers overcome of life and death, but '虛' in 內丹修煉 and oriental medicine have empirical concept. '太虛' is considered as formless space where it is emp Dut filled with 氣. It is conceptualized with the premise of the relevant adaptation of human body to natural environment theory referring that the interaction between the heaven and the earth makes changes; all creation is originated , and human is affected by the interaction of the heaven and the earth. Furthermore, in $\ulcorner$運氣七篇$\lrcorner$ (Seven chapters described about the five circuit phases and the six atmospheric influences), the expression that the earth is in the center of '太虛' and huge amount of 氣 supports it proves that $\ulcorner$運氣七篇$\lrcorner$ adapts '渾天設'(Chaotic universe thee). In Taoism, '虛' is the grounds where all creation is generated in the optimal condition of Tao. As regards the aspect of mentality, it is the condition in which one can free from the dualistic concepts such as right and wrong, beauty and ugliness, life and death, and so on. Although the ultimate goal of oriental medicine, the achievement of longevity without sickness, might contrast with the Taoist belief that perceives life and death as the natural phenomena or the flowing of the 氣, and eliminates all international, the idea of Taoism that one should live substantial life with naivety, and make Harmony with the nature might be influential to the oriental medicine.