• Journal of KIISE:Computing Practices and Letters
• /
• v.5 no.4
• /
• pp.395-404
• /
• 1999

포인터 스위즐링 기법은 포인터 스위즐링과 언스위즐링으로 이루어지며, 포인터 스위즐링은 객체 접근 시 객체 식별자를 해당 객체의 메모리 주소로 교체하는 것을 말하며, 언스위즐링은 객체 교체 또는 객체 저장 시에 스위즐링된 포인터를 원래의 객체 식별자로 환원하는 것을 말한다. 본 연구에서는 시스템 버퍼 구조에 따라 여러 포인터 스위즐링 기법을 분류하여 장단점을 분석하였으며, 이중 버퍼 구조 상에서 적극/소극, 직접/간접 스위즐링, 언스위즐링 모듈을 설계, 구현하였다. 또한 제한된 크기의 객체 버퍼 상에서 각 포인터 스위즐링 모듈의 성능을 평가하였다. 이 성능 평가의 결과로는 사용하지 않는 포인터는 스위즐링하지 않으며 언스위즐링 부담이 적은 소극 간접 스위즐링 기법이 일반적으로 뛰어난 성능을 나타냄을 알 수 있게 되었다.Abstract The pointer swizzling methods consist of pointer swizzling and unswizzling. Pointer swizzling replaces the OID of a object to the memory address of the object at object access time and unswizzling replaces the swizzling pointer of the OID at object replacement time or object save time. In this research, the different techniques for pointer swizzling are classified according to the system buffer structure and analyzed the pros and cons. In addition, eager/lazy, direct/indirect swizzling, unswizzling modules are designed and implemented on a dual buffering structure. Also, we evaluate the performance of pointer swizzling modules on the restricted object buffer size. The results of performance evaluation show that the performance of lazy indirect pointer swizzling technique is generally good because unused pointers are not swizzled, and unswizzling overhead is minimized.

• Journal of IKEEE
• /
• v.3 no.1 s.4
• /
• pp.126-132
• /
• 1999

The SDH (Synchronous Digital Hierarchy) has been rapidly acknowledged as a world wide transmission standard replacing the existing PDH infrastructure. A bit stuffing is used for synchronization between a PDH signal and a SDH node, and a pointer justification is used for synchronization between one SDH node and the other SDH node. During above processes - a bit stuffing and a pointer processing -, a stuffing jitter and a pointer Jitter are produced and the generated jitter can cause transmission error. In this study, a stuffing jitter and a pointer jitter are modeled and analyzed. A Sigma-Delta modulation is described and an advanced jitter reduction technique using a Sigma-Delta modulation technique in the Synchronizer, Pointer Processor and Desynchronizer is provided.

• Annual Conference on Human and Language Technology
• /
• 2018.10a
• /
• pp.126-131
• /
• 2018

cQA(Community-based Question Answering) 시스템은 사용자들이 질문을 남기고 답변을 작성하는 시스템이다. cQA는 사용자의 편의를 위해 기존의 축적된 질문을 검색하거나 카테고리로 분류하는 기능을 제공한다. 질문의 길이가 길 경우 검색이나 카테고리 분류의 정확도가 떨어지는 한계가 있는데, 이를 극복하기 위해 cQA 질문을 요약하는 모델을 구축할 필요가 있다. 하지만 이러한 모델을 구축하려면 대량의 요약 데이터를 확보해야 하는 어려움이 존재한다. 본 논문에서는 이러한 어려움을 극복하기 위해 cQA의 질문 제목, 본문으로 데이터를 확보하고 필터링을 통해 요약 데이터 셋을 만들었다. 또한 본문의 대표 단어를 이용하여 추상 요약을 하기 위해 딥러닝 기반의 Pointer-generator model을 사용하였다. 실험 결과, 기존의 추출 요약 방식보다 딥러닝 기반의 추상 요약 방식의 성능이 더 좋았으며 Pointer-generator model이 보다 좋은 성능을 보였다.

• Annual Conference on Human and Language Technology
• /
• 2018.10a
• /
• pp.685-688
• /
• 2018

의존 구문 분석은 자연어 문장에 포함된 단어들 간의 의존 관계를 분석하는 과제로 다양한 자연어 이해 과제에 요구되는 핵심 기술 중 하나이다. 본 연구에서는 단어와 문자 자질을 적용한 기존 Stack-Pointer Network의 인코더의 입력 단어 표상을 확장하여, 한국어를 비롯한 형태적으로 복잡한 언어(morphologically rich language)에 적합하도록 음절-태그 단위, 형태소 단위, 형태소 품사 정보 자질을 보강한 의존 구문 분석 모델을 제안한다. 실험 결과 제안하는 모델은 의존 구조로 변환된 세종 구문 분석 말뭉치에서 UAS 90.58%, LAS 88.35%의 성능을, 2018 국어 정보 처리 시스템 경진 대회 평가 데이터에서 UAS 84.69%, LAS 82.02%의 성능을 보였다. 더불어 제안하는 모델은 포함된 문장의 전체 길이가 긴 의존 관계, 의존소와 지배소의 거리가 먼 의존 관계, 의존소를 구성하는 형태소의 개수가 많은 의존 관계에서 기존 Stack-Pointer Network보다 향상된 성능을 보였다.

• Journal of the Korea Institute of Information and Communication Engineering
• /
• v.17 no.4
• /
• pp.878-884
• /
• 2013

Recent C ++ developers take advantage of the many advantages in memory management in the development of reference counting smart pointer. However, these have a problem more than the normal pointer. In this paper, we not only complement these by reference counting smart pointer which pointing a large dynamic object to perform a delete operation to improve performance by creating a thread for the delete operation but also Generalize all data types, we propose a convenient way to operate.

• Journal of the Korean Institute of Telematics and Electronics
• /
• v.27 no.1
• /
• pp.1-9
• /
• 1990

This paper investigates the significance and the implication of the pointer scheme, which was recently adapted by CCITT as a standard synchronization method in the broadband network-node interface environment, and discusses the merits of the pointer scheme in comparison with the conventional positive justification method. It also analyzes the jitter performance of the communication system employing the pointer scheme based on the fact that the pointer scheme corresponds to a multiple-bit positive/zero/negative justification.

• IE interfaces
• /
• v.11 no.2
• /
• pp.139-147
• /
• 1998

The purpose of this study is to survey colors of background, marker, and pointer being used in passenger car's combination meter, and to suggest ergonomic design guidelines of combination meter to enhance driver's readability. An experiment was conducted, in which colors of background, marker, and pointer were selected as independent variables, and reading time, reading error, and preference for combination meter were measured as dependent variables. Most of passenger cars sold in Korea were found to have combination meter with black background, while marker. The experimental results showed that reading time of combination meter with white background, black marker and point was shortest, reading error was lowest in combination meter with black background, yellow marker pointer, and preference for combination meter with white background, black marker and black or red pointer was highest. The results implied that combination meter with white background, black marker and black pointer should be used for comprehensively optimizing reading time, reading error, and preference for it. It was expected that these results could be used as valuable design guidelines when designing combination meter of passenger car.

• The KIPS Transactions:PartC
• /
• v.10C no.4
• /
• pp.455-462
• /
• 2003

Techniques for the reduction of SRTS jitter and pointer adjustment jitter are studied. To reduce the stuffing jitter several methods have been proposed, such as bit leaking, stuff threshold modulation and sigma delta modulation. The characteristics of jitter generated in SRTS and pointer adjustment systen implementing these reduction techniques is analyzed with computer simulation. The results show that ms jitter value decreases to less than 50% as compared to a conventional pointer adjustment system. The amplitude of SRTS jitter using new techniques decreases or Increases dependent on system parameter.

• KIISE Transactions on Computing Practices
• /
• v.23 no.9
• /
• pp.542-549
• /
• 2017

Sequence-to-sequence models and similar pointer networks suffer from performance degradation when an input is composed of multiple sentences or when the length of the input sentence is long. To solve this problem, this paper proposes a hierarchical pointer network model that uses both the word level and sentence level information to encode input sequences composed of several sentences at the word level and sentence level. We propose a hierarchical pointer network based coreference resolution that performs a coreference resolution for all mentions. The experimental results show that the proposed model has a precision of 87.07%, recall of 65.39% and CoNLL F1 74.61%, which is an improvement of 21.83% compared to an existing rule-based model.

• Journal of Digital Convergence
• /
• v.10 no.2
• /
• pp.211-216
• /
• 2012

There are two kinks of processes could detect the laser pointer. One is the process which detects the location of the pointer. the other one is a possibility of dividing with the process which converts the coordinate of the laser pointer which is input in coordinate of the monitor. The previous Mean-Shift algorithm is not appropriately for real-time video image to calculate many quantity. In this paper, we proposed the context driven real-time laser pointer detection and tracking. The proposed method is a possibility of getting the result which is fixed from the situation which the background and the background which are complicated dynamically move. In the actual environment, we can get to give constant results when the object come in, when going out at forecast boundary. Ultimately, this paper suggests empirical application to verify the adequacy and the validity with the proposed method. Accordingly, the accuracy and the quality of image recognition will be improved the surveillance system.