• Korean Journal of Cognitive Science
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• v.21 no.2
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• pp.253-282
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• 2010

Two experiments were conducted to explore the effects of anaphora and demonstrative ellipsis on reference resolution. This study assumed that two type of ellipsis could be sensitive to antecedents' saliency: the reverse typicality and mention order of antecedents. The muti-task approach measured the antecedent's activation level and processing load for the conflict resolution of theories of anaphoric resolution. In Experiment 1, using ellipsis for anaphora, participants read a series of sentence pairs by self-paced and performed a probe recognition test. The results showed the main effects of antecedent's typicality and mention order in both tasks. In Experiment 2, using noun phrase without demonstrative for anaphora, participants read a series of sentence pairs by self-paced and performed a probe recognition test. The results showed main effects of mention order of antecedents for probe recognition task only. The first antecedent was recognized faster than the second one. The results of two experiments suggested that anaphora type and antecedent's saliency were dynamically interact in reference resolution for Korean.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2009.11a
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• pp.231-234
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• 2009

본 논문에서는 고속 동영상 방식의 스킵 블록 예측을 이용한 변환 과정 및 양자화 과정 생략 기법에 대해 제안한다. 정수여현 변환과 양자화 과정을 이용하여 생략 가능 블록을 예측하고, 이를 이용하여 압축 효율에 영향 없이 효과적으로 양자화 생략하는 방식에 대해 기술한다. 실험 결과를 통해 제안 방식을 이용한 예측된 블록이 부가적인 계산 없이 효과적으로 예측되어 생략되었음을 확인할 수 있었다.

• Annual Conference on Human and Language Technology
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• 2003.10d
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• pp.134-136
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• 2003

본 논문은 Grosz et al(1995)의 중심화이론(centering theory)을 바탕으로 목적어의 생략의 동기를 설명할 수 있는가를 검증하였다. 한국의 민담에 나타난 431개의 절과 신문사설 249개의 절을 분석한 결과 공목적어(zero object)의 17%만이 중심유지변이(continue transition)에 사용되었으며, 이는 중심화이론의 기존 세 가지 제약만으로는 공목적어의 분포를 설명할 수 없음을 보여주는 것이다. 본 연구에서는 중심화이론 내에서 공목적어의 분포를 설명하기 위하여 Kameyama(1998)의 평행선호조건(Parallelism Preference Condition)을 도입할 것을 제안하였다. 평행선호조건의 도입은 세 가지 측면에서 지지된다. 첫째, 중심변이 개념만으로 설명이 불충분한 공목적어의 분포를 중심화이론 내에서 설명할 수 있다. 둘째, 순조로운 중심이동변이(smooth-shift transition)에 나타나는 공주어의 분포를 설명할 수 있다. 셋째, 평행선호조건은 공명대명사의 해석뿐만 아니라 시제의 생략이나 동사의 생략을 설명하기 위해서 독립적으로 지지되는 조건이다.

• Journal of Broadcast Engineering
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• v.13 no.3
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• pp.411-414
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• 2008

In this paper, we present a determination method of quantization skipping condition for H.264/AVC video encoding standard. In order to reduce the complexity of quantization process that is coming from Integer discrete cosine transform, a quantization skipping condition is derived by the analysis of integer transform and quantization processes. The experimental results show that the proposed algorithm has the capability to reduce the computational complexity of CPU operation time about 10-25(%)

• Annual Conference on Human and Language Technology
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• 1993.10a
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• pp.3-14
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• 1993

본 논문은 조건 단일화 기반 문법을 사용한 우리말 분석에 관한 연구이다. 우리말은 문법이 매우 간단한 반면 생략현상이 빈번하고 어순이 자유로운 언어이다. 우리는 이와같은 특징을 잘 소화해내기 위한 방법으로 조건 단일화 기법을 제안한다. 본 논문에서 사용한 문법은 PATR II이며 실험을 위한 시스템은 Sparc Station $I^*$ 위에서 Lisp를 사용해 구현하였다. 이를 바탕으로 우리말 파싱시 가장 어려운 문제들이라고 여겨져 온 생략, 도치, 보문화등을 조건 단일화 기법을 이용하여 분석할 수 있음을 보인다.

• (The)Study of the Eastern Classic
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• no.56
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• pp.297-329
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• 2014

This paper aims to examine the base inflectional forms of Korean old vernacular letters, and explain why it appears with frequency. In the korean old vernacular letters, the suffix 'ha-' and ending of the 'Base+ha-' adjective derivation are not appear with extraordinary frequency. I called it the base inflectional forms. I consider it in function and morphological constructions and also the syntactic constructions. Whenever Joseon-era people wrote a letter with a time limit, they have need to diminish their exertion to use of the brush. Therefore the base inflectional forms appear with extraordinary frequency in comparison with other papers. In the 'X ha-' word formation of Korean old vernacular letters, 'ha-' is formal morpheme without substantial meaning. So 'X' is left and 'ha-' and ending can be omitted resolutely. The base inflectional forms are occurred to voluntary language performance for a particular intention. but it is not appear in all conditions. In some circumstances, it appear. I checked out the constructions on base inflectional forms. In the 'X ha-' word formation, 'X' is predicative base without fail. and the ending which take part in base inflectional forms has a grammatical function unadulteratedly.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.28 no.8C
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• pp.779-787
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• 2003

In this paper, we propose an improved early detection of all-zero DCT coefficients for fast video encoding. From the experimental observation, it is shown that the performance of the conventional method is limited because of the imprecision sufficient condition. When the calculation of the SAD in motion estimation is simply modified, more precise sufficient condition is derived from the theoretical analysis. Based on this idea, DCT and the quantization stages are effectively skipped in the proposed algorithm with no image degradation. The simulation results show that the proposed algorithm achieves computational saving over 10% compared to the conventional method.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.28 no.7C
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• pp.696-704
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• 2003

In this paper, we propose an improved early detection of all-zero DCT coefficients for fast video encoding. From the experimental observation, it is shown that the performance of the conventional method is limited because of the imprecision sufficient condition. When the calculation of the SAD in motion estimation is simply modified, more precise sufficient condition is derived from the theoretical analysis. Based on this idea, DCT and the quantization stages are effectively skipped in the proposed algorithm with no image degradation. The simulation results show that the proposed algorithm achieves computational saving over 10% compared to the conventional method.

• Korean Journal of Cognitive Science
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• v.18 no.2
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• pp.113-138
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• 2007

The effects of schema on accurate and false memories of items in a scene were investigated in two experiments: Recognition of items in a scene was tested immediately in Experiment 1 and three days later in Experiment 2. In both experiments, the following three variables were manipulated: Exposure time (250ms or 10000ms), picture mode (completed pictures or scrambled pictures), and manipulation mode (missing item or substituted item). Experiment 1 had yielded three important results: First, although accurate memory for presented items got increased when the exposure time was longer, false memory of the critical lures was not changed. Second, false memory of critical lures in the missing condition, where there was not any conflict between verbatim information and gist information, was higher than that of the substituted condition, where verbatim information of the item that replaced the lure was in conflict with the gist information. Third, accurate memory for atypical items in the substituted rendition, which had replaced the critical lures and in conflict with the schema, was higher than that in the missing condition. In Experiment 2, recognition test were administered 72 hours after the participants saw the picture. The three effects mentioned in Experiment 1 had disappeared in Experiment 2. The results of Experiment 2 might be due to the selective weakening of verbatim information compared to the persistence of the gist (or schematic) information. The results of Experiments 1 and 2 showed that false memory of critical lures is more persistent than the accurate memory of non-critical information. Theoretical implications of the results were considered in terms of the function of the verbatim and gist information.

• Proceedings of the Korean Information Science Society Conference
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• 2002.10d
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• pp.424-426
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• 2002

효과적인 볼륨렌더링을 위해서는 빠른 속도와 고화질이라는 두 가지 조건을 모두 충족시켜야 한다. 기존에 사용된 광선추적법은 화질이 좋은 반면에 실시간 렌더링을 하기에는 한계가 있었다. 공간 도약법은 빈 공간에 대한 샘플링을 생략함으로써 렌더링 속도를 향상시킬 수 있으나 관측조건에 따라 성능이 저하되는 문제가 있다. 본 논문에서는 기존의 공간 도약법을 개선하여 관측조건과 무관하게 고화질을 유지하면서 속도를 향상시키는 방법을 제안한다. 여기서는 뷰 평면을 균일한 격자로 분할하고 각 격자내에서 가장 가까운 객체의 표면까지의 거리를 구한 후 그 위치부터 공간 도약함으로써 속도를 향상시킨다.