• Title/Summary/Keyword: Language Comprehension

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Differential Effect for Neural Activation Processes according to the Proficiency Level of Code Switching: An ERP Study (이중언어환경에서의 언어간 부호전환 수준에 따른 차별적 신경활성화 과정: ERP연구)

  • Kim, Choong-Myung
    • Phonetics and Speech Sciences
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    • v.2 no.4
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    • pp.3-10
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    • 2010
  • The present study aims to investigate neural activations according to the level of code switching in English proficient bilinguals and to find the relationship between the performance of language switching and proficiency level using ERPs (event-related potentials). First, when comparing high-proficient (HP) with low-proficient (LP) bilingual performance in a native language environment, the activation level of N2 was observed to be higher in the HP group than in the LP group, but only under two conditions: 1) the language switching (between-language) condition known as indexing attention of code switching and 2) the inhibition of current language for L1. Another effect of N400 can be shown in both groups only in the language non-switching (within-language) condition. This effect suggests that both groups completed the semantic acceptability task well in their native language environment without the burden of language switching, irrespective of high or low performance. The latencies of N400 are only about 100ms earlier in the HP group than in the LP group. This difference can be interpreted as facilitation of the given task. These results suggest that HP showed the differential activation in inhibitory system for L1 in switching condition of L1-to-L2 to be contrary to inactivation of inhibitory system for the LP group. Despite the absence of an N400 effect at the given task in both groups, differential latencies between the peaks were attributed to the differences of efficiency in semantic processing.

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S2-Net: Korean Machine Reading Comprehension with SRU-based Self-matching Network (S2-Net: SRU 기반 Self-matching Network를 이용한 한국어 기계 독해)

  • Park, Cheoneum;Lee, Changki;Hong, Sulyn;Hwang, Yigyu;Yoo, Taejoon;Kim, Hyunki
    • Annual Conference on Human and Language Technology
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    • 2017.10a
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    • pp.35-40
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    • 2017
  • 기계 독해(Machine reading comprehension)는 주어진 문맥을 이해하고, 질문에 적합한 답을 문맥 내에서 찾는 문제이다. Simple Recurrent Unit (SRU)은 Gated Recurrent Unit (GRU)등과 같이 neural gate를 이용하여 Recurrent Neural Network (RNN)에서 발생하는 vanishing gradient problem을 해결하고, gate 입력에서 이전 hidden state를 제거하여 GRU보다 속도를 향상시킨 모델이며, Self-matching Network는 R-Net 모델에서 사용된 것으로, 자기 자신의 RNN sequence에 대하여 어텐션 가중치 (attention weight)를 계산하여 비슷한 의미 문맥 정보를 볼 수 있기 때문에 상호참조해결과 유사한 효과를 볼 수 있다. 본 논문에서는 한국어 기계 독해 데이터 셋을 구축하고, 여러 층의 SRU를 이용한 Encoder에 Self-matching layer를 추가한 $S^2$-Net 모델을 제안한다. 실험 결과, 본 논문에서 제안한 $S^2$-Net 모델이 한국어 기계 독해 데이터 셋에서 EM 65.84%, F1 78.98%의 성능을 보였다.

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The Development of the Powerpoint Program for Progressive Reading by the Sense Group according to the Student's Level (학습자의 수준에 따른 의미단위별 앞에서부터 읽기 파워포인트 프로그램 개발)

  • Sohng, Hae-Sung
    • English Language & Literature Teaching
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    • v.10 no.2
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    • pp.43-65
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    • 2004
  • In the comprehension of English texts, Korean students generally try to translate English into Korean in accordance with the word order of Korean language. As a result, the comprehension of English texts is made in a regressive way, which results in slower reading. In order to enhance the reading speed, it is necessary for students to practice progressive reading. Also, while reading English texts, most readers' eyes tend to look at one word at a time, which actually cuts down on the reading speed. Reading by the sense group of as many words as possible at a glance, however, can help a reader more efficiently in less time. This research aims at developing the Powerpoint program for progressive reading by the sense group according to the student's level. In this program, as for methodology, the technique of rooking it fade-away is introduced to force a reader's eyes to move fast. Through this technique, it is possible to make a line of the texts disappear on the screen and make another line appear, which enables a reader to sweep the words across each and every line of the reading material smoothly without regression.

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Machine Reading Comprehension System to Solve Unanswerable Problems using Method of Mimicking Reading Comprehension Patterns (기계독해 시스템에서 답변 불가능 문제 해결을 위한 독해 패턴 모방 방법)

  • Lee, Yejin;Jang, Youngjin;Lee, Hyeon-gu;Shin, Dongwook;Park, Chanhoon;Kang, Inho;Kim, Harksoo
    • Annual Conference on Human and Language Technology
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    • 2021.10a
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    • pp.139-143
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    • 2021
  • 최근 대용량 말뭉치를 기반으로 한 언어 모델이 개발됨에 따라 다양한 자연어처리 분야에서 사람보다 높은 성능을 보이는 시스템이 제안되었다. 이에 따라, 더 어렵고 복잡한 문제를 해결하기 위한 데이터셋들이 공개되었으며 대표적으로 기계독해 작업에서는 시스템이 질문에 대해 답변할 수 없다고 판단할 수 있는지 평가하기 위한 데이터셋이 공개되었다. 입력 받은 데이터에 대해 답변할 수 없다고 판단하는 것은 실제 애플리케이션에서 중요한 문제이기 때문에, 이를 해결하기 위한 연구도 다양하게 진행되었다. 본 논문에서는 문서를 이해하여 답변할 수 없는 데이터에 대해 효과적으로 판단할 수 있는 기계독해 시스템을 제안한다. 제안 모델은 문서의 내용과 질문에 대한 이해도가 낮을 경우 정확한 정답을 맞히지 못하는 사람의 독해 패턴에서 착안하여 기계독해 시스템의 문서 이해도를 높이고자 한다. KLUE-MRC 개발 데이터를 통한 실험에서 EM, Rouge-w 기준으로 각각 71.73%, 76.80%을 보였다.

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Meta analysis on the effect of reading development program on reading comprehension (독해력 증진 프로그램 효과에 대한 메타분석)

  • Lee, Hyo-Jin;Oh, Hee-Hwa;Choi, Kyoung-Ho
    • Journal of the Korean Data and Information Science Society
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    • v.23 no.3
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    • pp.447-455
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    • 2012
  • The purpose of this study is to examine the effect of reading development program on reading comprehension using meta-analysis method. The authors synthesized 70 studies regarding reading comprehension conducted during 2001 through 2011. The analyses revealed that 1) the average effect size of the reading development program yielded.763, which is regarded considerably large, 2) the effect size of elementary school group was the biggest, 1.030. There were statistically significant differences amongst school levels, 3) the average effect size of published journal articles was 1.250, which is statistically significantly larger than that of dissertation's.700, 4) regarding the methods to measure the effect of reading comprehension, the effect size of reading method was larger, and 5) the effect size of Korean reading development program was statistically larger than that of English reading development program. This study has limitation as it didn't include unpublished manuscripts, conference presentations, and the like, however this study is meaningful in terms that it tried to draw integrated conclusion about the effect of reading development programs using meta-analysis.

L2 Reading Difficulties Faced by Malaysian Students in a Korean University (말레이시아 학생들의 L2 읽기 문제: 한국 대학의 사례를 중심으로)

  • Kim, Kyung-Rahn
    • Journal of Digital Convergence
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    • v.19 no.2
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    • pp.21-32
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    • 2021
  • The current study investigates how Malaysian ESL learners' L2 (English) speaking fluency is reflected in advanced L2 reading and what difficulties they encounter in reading comprehension. Nine Malaysian students attending a Korean university participated in qualitative research using in-depth and semi-structured interviews. The data revealed that L2 was a very familiar language, and their speaking fluency in L2 reduced the anxiety of L2 reading in general. However, it did not play a significant role in reading at an advanced level. Their difficulties in reading were mainly due to a lack of vocabulary knowledge. However, insufficient background knowledge and interest also frustrated their reading tasks. These factors lowered their reading comprehension, causing inaccurate interpretations or discouraging their endeavors to find messages from the given text. Thus, these findings should be carefully addressed in reading classes for Korean L2 learners as well as international students.

The Effects of a Context-based Drawing Task on the Language Expression of Severe Wernicke's and Broca's Aphasic Patients (문맥적 상황중심의 그림 그리기 과업이 중증의 베르니케 실어증과 브로카 실어증에 미치는 영향)

  • Lee, Ok-Bun;Shim, Hong-Im;Jeong, Ok-Ran
    • Speech Sciences
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    • v.10 no.3
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    • pp.37-45
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    • 2003
  • This study attempted to determine the effects of a context-based drawing task on the language expression of a severe Wernicke's and Broca's aphasic. The subjects in this study showed a poor auditory comprehension and naming performance. They also showed paraphasia and perseveration. This study focused on improving language expression by a drawing task based on conversation at hand. Ten target words were chosen which were easily drawnable and familiar to the subjects. The results showed that the context-based drawing task was effective on improving the subjects' confrontation naming ability and expressive language ability in terms of explanation of sentences. In addition, the Broca's aphasic showed improved naming ability when the contextual cues were given and he was supposed to spontaneously name words.

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Syntactic and Semantic Integration Processes during Korean Sentence Comprehension: using ERPs as an neurophysiological index (ERP로 확인된 한국어 문장 이해과정에서의 통사 및 의미 처리특성 연구)

  • Kim, Choong-Myung;Lee, Kyoung-Min
    • Annual Conference on Human and Language Technology
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    • 2004.10d
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    • pp.259-263
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    • 2004
  • 본 연구는 머리어-후행언어(head-final language)로 분류되는 한국어의 통사 및 의미 처리 과정의 언어간(cross linguistic) 일반성과 언어내(intra-language) 특이성을 ERP(event- related potentials) 실험결과를 통해 알아보고자 하였다. 한국어 문장처리 과정에서의 통사 및 의미 처리특성은, 우선 이들을 지표하는 각각의 오류문을 통해 P600과 N400 이라는 언어일반의 처리과정을 보이면서도 각 성분의 영역분포는 오류가 출현된 위치에 따라 분기하고 있음을 관찰할 수 있었다. 곧, 문미위치의 술어오류에서 중심-두정 부위의 활성화 우세로 각 오류간 영역분화를 보이는 패턴을 새롭게 확인하였다. 이로써 오류의 유형별 재분류과정으로 드러난 오류출현 위치가 오류의 유형 내에 영향을 끼치는 한 변수가 될 수 있으며. 이는 이들 보어 및 술어를 구성하는 고유의 범주 특성으로 해석할 수 있는 근거가 될 수 있음도 아울러 확인하였다.

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A Study on Teaching Korean as a Foreign Language in North Korea: Focusing on Conversation Textbooks for International Students (조선의 '외국어로서 조선어교육' 연구 - 류학생 회화 교재를 중심으로 -)

  • Kim, Inkyu
    • Journal of Korean language education
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    • v.23 no.1
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    • pp.283-306
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    • 2012
  • This study dealt with an issue of teaching Korean as a foreign language in North Korea through textbook analysis. The literature in this field has been quite rare compared to that in other fields in Korean language education, which is due to the adverse circumstances under which research into North Korea is currently carried out. The textbooks analyzed were 조선말회화(1) and 조선말회화(3) and the two learners who had studied Korean with these textbooks were interviewed. The main results show that (a) the grammar points in each chapter are unevenly distributed in 조선말회화(1), which makes it not look learner-centered; (b) each chapter in 조선말회화(1) is composed of speech acts, topics and situations, which renders it useful to its learners; (c) 조선말회화(3) emphasizes Korean oral discoursal features as a conversational textbook; and (d) 조선말회화(3) also covers much of reading comprehension-focused contents, which its learners may find burdensome. Foreseeing a possibility of teaching Korean as a foreign language in a reunified Korea makes it critical to carry out research into teaching Korean as a foreign language in North Korea. This calls for future collaborative research into this issue between two Koreas.

Question Generation of Machine Reading Comprehension for Data Augmentation and Domain Adaptation (추가 데이터 및 도메인 적응을 위한 기계독해 질의 생성)

  • Lee, Hyeon-gu;Jang, Youngjin;Kim, Jintae;Wang, JiHyun;Shin, Donghoon;Kim, Harksoo
    • Annual Conference on Human and Language Technology
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    • 2019.10a
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    • pp.415-418
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    • 2019
  • 기계독해 모델에 새로운 도메인을 적용하기 위해서는 도메인에 맞는 데이터가 필요하다. 그러나 추가 데이터 구축은 많은 비용이 발생한다. 사람이 직접 구축한 데이터 없이 적용하기 위해서는 자동 추가 데이터 확보, 도메인 적응의 문제를 해결해야한다. 추가 데이터 확보의 경우 번역, 질의 생성의 방법으로 연구가 진행되었다. 그러나 도메인 적응을 위해서는 새로운 정답 유형에 대한 질의가 필요하며 이를 위해서는 정답 후보 추출, 추출된 정답 후보로 질의를 생성해야한다. 본 논문에서는 이러한 문제를 해결하기 위해 듀얼 포인터 네트워크 기반 정답 후보 추출 모델로 정답 후보를 추출하고, 포인터 제너레이터 기반 질의 생성 모델로 새로운 데이터를 생성하는 방법을 제안한다. 실험 결과 추가 데이터 확보의 경우 KorQuAD, 경제, 금융 도메인의 데이터에서 모두 성능 향상을 보였으며, 도메인 적응 실험에서도 새로운 도메인의 문맥만을 이용해 데이터를 생성했을 때 기존 도메인과 다른 도메인에서 모두 기계독해 성능 향상을 보였다.

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