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이형효 한국외국어대학교 북미연구소 2000 영미연구 Vol.6 No.-
The history and culture of American Indian has been regarded as inferior to European civilization.Historians have argued that the Indians had no common language, operated on diverse and distinct cultural levels, and their families, tribes, and governments were structured very differently from each other.But during the first contact period the white man borrowed heavily from Indian culture, notably in the area of agriculture, while the Indian came to depend upon European trade and goods.As a result the Indians were uprooted and settled on reservations.The reservation period was one of tragic neglect and broken promises.The federal government's attitude toward the Indian in recent decades is characterized by a growing sensitivity to Indian cultural needs and a policy of improving economic well-being, enhanced by access to educational opportunities and buttressed by legal protection accorded inherited tribal and individual rights. Americans today have a greater awareness of past injustices perpetrated upon racial and ethnic minorities than in earlier times.The way Indians have been treated still affects the national conscience.That national conscience toward the Indians was manifest in a long series of federal reforms.We can forsee a period of healthy coexistence between Indian and white, one which will make amends in some part for earlier at total destruction or total assimilation of the Indian presence.Also we will recognize that the history of America is a history of peoples, white, black, and red.
국부적 최소비용 오류보정에서 전위문자열의 효율적인 계산
이형효(Lee Hyung Hyo),정민수(Jung Min Soo),최광무(Choe Kwang Moo) 한국정보과학회 1990 정보과학회논문지 Vol.17 No.1
Fischer 등이 제안한 국부적 최소비용 오류보정 모델은 입력문법에 나타난 터미널 심볼들의 삽입 및 삭제 비용을 기초로 한 프로그래밍 언어에 무관하고 formal한 오류보정 방식이다. Eryacc은 기존의 UNIX 환경에서 동작하는 파서 생성 시스템인 yacc에 상기 모델을 기초로 최광무 등이 제안한 LR 파싱 방식에서의 효율적인 최소비용 삽입스트링의 계산에 이용되는 전위문자열의 비효율적인 계산 알고리즘 때문에 Ada, CHILL과 같은 큰 크기의 프로그래밍 언어에 대해서는 Eryacc의 수행이 비현실적이었다. 본 논문에서는 심볼들간의 dependency 관계를 이용한 효율적인 전위문자열 계산 알고리즘을 제안하고 Eryacc에 구현하여 그 효율성을 보였다. Locally least-cost error repair model proposed by Fischer et al. is an language independent error repair scheme with insertion and deletion cost of terminal symbols in input grammar. Eryacc (error repair yacc), which is based on yacc of parser generating system under UNIX environments, is an error repair parser generating system with Fischer's model and an efficient algorithm for computing leastcost insertion string of LR-based parser proposed by Choe and Chang. But the inefficient algorithm for the computation of prefix strings used in computation of the least-cost insertion string makes the execution time of Eryacc unreasonable in case of the large sized programming languages such as Ada and CHILL. In this paper, an efficient algorithm for the computation of prefix strings using the dependency relation between vocabulary symbols is proposed and experimental results are also presented.