• Journal of Advanced Marine Engineering and Technology
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• 제37권7호
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• pp.760-770
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• 2013

Detecting grammatical errors from a text is a long-history application. In this paper, we compare the performance of two grammatical error detection techniques, which are implemented as a sub-module of an automated English scoring system. One is to use a full syntactic parser, which has not only grammatical rules but also extra-grammatical rules in order to detect syntactic errors while paring. The other one is to use a finite state machine which can identify an error covering a small range of an input. In order to compare the two approaches, grammatical errors are divided into three parts; the first one is grammatical error that can be handled by both approaches, and the second one is errors that can be handled by only a full parser, and the last one is errors that can be done only in a finite state machine. By doing this, we can figure out the strength and the weakness of each approach. The evaluation results show that a full parsing approach can detect more errors than a finite state machine can, while the accuracy of the former is lower than that of the latter. We can conclude that a full parser is suitable for detecting grammatical errors with a long distance dependency, whereas a finite state machine works well on sentences with multiple grammatical errors.

• 음성과학
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• 제10권3호
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• pp.47-64
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• 2003

In the present study, the production of grammatical morphemes of Korean-speaking children with and without developmental language impairments was investigated. Ten children with language impairments (LI) (CA: 4; 4-6; 11, LA: 3; .6-5; 10) and 10 normal children (CA: 3;1-6;3, LA: 3;5-5;11) with matched language abilities participated in the study. Sixty pairs of pictures were used to elicit 12 types of predetermined grammatical morphemes. The two pictures of a pair were designed to elicit two sentences of the same sentence structure. After the investigator described one picture of a pair, the children were asked to describe the other picture. The LI children made more errors than the normal children in the production of 6 types of grammatical morphemes including: locative case marker, dative case marker, two connective endings of predicates representing cause and goal, and suffixes for passive and causative verbs. However, the LI children produced some grammatical morphemes as accurately as. the normal children. The two groups were similar in their error patterns. Some explanations for Korean-speaking LI children's use of grammatical morphemes were suggested.

• 음성과학
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• 제9권4호
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• pp.77-91
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• 2002

This study investigated the use of grammatical morphemes (substantive morphemes and connective endings) of Korean speaking children with and without language impairment (LI). Participants were two children (ages 5;11 and 6;2) with SLI (specific language impairment), two LD (language delay) children (ages 6;3 and 6;5) with 70-84 range on a performance-IQ test, and two children (ages 5;7 and 6;1) with ND (normal development). Spontaneous language samples were elicited by play activities and story generation. A total of 8,059 (M=I,343, ranged 966-1,659) intelligible and nonimitative utterances were analyzed by the KCLA 2.0 (Korean Computerized Language Analysis 2.0) program for substantive morphemes and connective endings. The findings of this study were as follows; (1) The Korean speaking children with LI including SLI demonstrated less uses of grammatical morphemes than ND children. (2) Few differences were found between LI and ND children in the use of the grammatical morpheme types. (3) LI children produced significantly higher percentage of grammatical morpheme errors in spontaneous speech than ND children. (4) Few differences were found between SLI and LD children in degrees of the use and the error of grammatical morphemes.

• 말소리와 음성과학
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• 제4권3호
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• pp.129-136
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• 2012

Korean alveolar fricatives are late-developing speech sounds. Most previous research on phonemes used individual words or pseudo words to produce sounds, but word-level phonological analysis does not always reflect a child's practical articulation ability. Also, there has been limited research on articulation development looking at speech production by grammatical morphemes despite its importance in Korean language. Therefore, this research examines the articulation development and phonological patterns of the /s/ phoneme in terms of morphological types produced in children's spontaneous conversational speech. The subjects were twenty-two typically developing 3- and 4-year-old Koreans. All children showed normal levels in three screening tests: hearing, vocabulary, and articulation. Spontaneous conversational samples were recorded at the children's homes. The results are as follows. The error rates decreased with increasing age in all morphological contexts. Also, error percentages within an age group were significantly lower in lexical morphemes than in grammatical morphemes. The stopping of fricative sounds was the main error pattern in all morphological contexts and reduced as age increased. This research shows that articulation performance can differ significantly by morphological contexts. The present study provides data that can be used to identify the difficult context for articulatory evaluation and therapy of alveolar fricative sounds.

• 아시아태평양코퍼스연구
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• 제4권1호
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• pp.25-42
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• 2023

The number of studies on data-driven learning (DDL) has increased in recent years, and DDL's overall effectiveness as an L2 (second language) teaching methodology has been reported to be high. However, the degree of its effectiveness in grammar instruction, particularly for the goal of correcting errors in L2 writing, is still unclear. To provide guidelines for focused grammar instruction with DDL in the Japanese classroom setting, we aimed to identify the typical grammatical errors made by Japanese learners in the Cambridge Learner Corpus First Certificate in English (CLC FCE) dataset. The results revealed that three error types (nouns, articles, and prepositions) should be addressed in DDL grammar instruction for Japanese English as a foreign language (EFL) learners. In light of the findings, pedagogical implications and suggestions for future DDL research and practice are discussed.

• International Journal of Contents
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• 제5권3호
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• pp.65-70
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• 2009

This paper describes ongoing work on the correction of adverb errors committed by Korean learners studying English as a foreign language (EFL), using an automated English writing assessment system. Adverb errors are commonly found in learners 'writings, but handling those errors rarely draws an attention in natural language processing due to complicated characteristics of adverb. To correctly detect the errors, adverbs are classified according to their grammatical functions, meanings and positions within a sentence. Adverb errors are collected from learners' sentences, and classified into five categories adopting a traditional error analysis. The error classification in conjunction with the adverb categorization is implemented into a set of mal-rules which automatically identifies the errors. When an error is detected, the system corrects the error and suggests error specific feedback. The feedback includes the types of errors, a corrected string of the error and a brief description of the error. This attempt suggests how to improve adverb error correction method as well as to provide richer diagnostic feedback to the learners.

• International Journal of Internet, Broadcasting and Communication
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• 제13권4호
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• pp.22-29
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• 2021

This study evaluates the accuracy of corrective feedback from Grammarly, an online grammar checker, on essays written by cyber university learners in terms of detected errors, suggested replacement forms, and false alarms.The results indicate that Grammarly has a high overall error detection rate of over 65%, being particularly strong at catching errors related to articles and prepositions. In addition, on the detected errors, Grammarly mostly provide accurate replacement forms and very rarely make false alarms. These findings suggest that Grammarly has high potential as a useful educational tool to complement the drawbacks of teacher feedback and to help learnersimprove grammatical accuracy in their written work. However, it is still premature to conclude that Grammarly can completely replace teacher feedback because it has the possibility (approximately 35%) of failing to detect errors and the limitationsin detecting errors in certain categories. Since the feedback from Grammarly is not entirely reliable, caution should be taken for successful integration of Grammarly in English writing classes. Teachers should make judicious decisions on when and how to use Grammarly, based on a keen awareness of Grammarly's strengths and limitations.

• 한국노년학
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• 제32권3호
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• pp.747-758
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• 2012

본 연구는 임상 현장에서 정상 노인과 변별되는 알츠하이머성 치매 환자의 자발화 과제에서의 수행력을 알아보기 위해 실시되었다. 연구방법은 65세 이상의 정상노인 13명과 알츠하이머성 치매 환자 26명(치매 의심(questionable) 9명, 경도(mild) 치매 9명, 중도(moderate) 치매 8명)을 대상으로 대화하기 및 연속그림 설명하기 과제를 실시하였고, 전체 발화 템포, 주저시간(초단위), 조음 음운 오류, 그리고 문법적 오류를 포함한 네 가지 구어적 요소에 대해 분석, 비교하였다. 연구결과, 네 가지 요소 모두에서 집단 간 차이를 보였다. 특히, 전체 발화 템포는 정상노인과 세 치매 환자군 각각에서 유의한 차이를 보였는데, 주저시간은 중도 치매에서만, 그리고 조음 음운 오류는 경도, 중도 치매군에서만 증가되었다. 문법적 오류는 정상노인과 비교하여 치매의심군과 중도 치매군에서 유의하게 증가되었다. 상기 연구 결과를 통해, 다음과 같은 결론을 제시할 수 있다. 첫째, 정상노인과 세 치매 환자군을 가장 변별력있게 구분할 수 있는 구어적 요소는 전체 발화 템포이다. 둘째, 조음 음운능력은 치매의심군에서는 감소하지 않지만, 경도 및 중도치매군에서는 그 수행력이 떨어진다. 셋째, 문법적 오류는 중도 치매환자군에서부터 확연히 증가한다. 향후, 자발화 과제를 통해 의료기관 외의 장소에서도 치매 선별의 용이성을 더할 수 있으며, 담화 차원의 언어능력에 대한 관찰이 가능하므로 다양한 원인질환을 가진 치매 환자들의 정보를 얻을 수 있을 것으로 기대된다.

• 영어어문교육
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• 제12권2호
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• pp.19-40
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• 2006

This paper deals with a part-specific analysis of grammatical errors in the production of the English passive in writing. The purpose of the study is dual: to explore common error types in forming the passive; and to provide plausible sources of the errors, with special attention to the role of the native language. To this end, this study obtained a large amount of data from Korean EFL university students using an essay writing task. The results show that in forming the passive sentence, errors were made in various ways and that the most common problem was the formation of the be-auxiliary, in particular, the proper use of tense and S-V agreement. Another important finding was that the global errors found in this study were not necessarily those with the greatest frequency. Also corroborated was the general claim that many factors work together to account for errors. In many cases, interlingual and intralingual factors were shown to interact with each other to explain the passive errors made by Korean students. On the basis of the results, suggestions are made for effective and well-formed use of the passive sentence.

• 산업융합연구
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• 제18권4호
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• pp.93-99
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• 2020

본 연구는 해외어학연수의 외국어 정확성 향상에 대한 효과를 조명하기 위해 한 학기 동안 해외대학에서 어학연수를 받은 27명의 한국 대학생들이 한 학기의 시간차를 두고 작성한 두 영작문 간의 차이와 오류들을 조사하고, 그러한 차이가 통계적으로 유의미한지를 검정하여 외국어 정확도 면에서의 변화를 분석하였다. 어학연수 이후에 영작문의 길이와 문장의 길이가 증가하였으나 전체 문장수는 감소하였다. 학생들은 더 많은 수의 단어를 더 복잡한 구조의 문장에서 사용하여 오류의 수도 증가하였다. 이를 볼 때, 어학연수 이후 학생들의 문장 생성능력이 향상되고 복잡한 형태의 문장들을 쓰려고 시도한 것을 알 수 있다. 본 연구의 결과는 한 학기 동안 해외어학연수를 받은 이후 대체로 학생들의 문장생성능력은 다소 증진하였지만, 문법적 요소들을 문장 속에서 정확하게 사용하는 문법적 정확성은 크게 향상하지 않은 것으로 나타났다. 이는 비록 해외 어학연수가 집중적으로 목표언어만 학습하여 언어입력을 확대할 수 있을 뿐만 아니라, 목표언어에 자연스럽게 노출될 수 있는 환경적 이점을 제공하긴 하지만, 한 학기라는 기간 안에 문법적으로 정확한 문장을 생성해내는 문법능력을 향상시키는 데는 크게 효과적이지 않았다는 것을 시사한다.