인지 아키텍처 ACT-R 모델링의 새로운 대안: 수 세기 과제를 중심으로 = An Alternative to Modeling in the ACT-R Cognitive Architecture: Focused on Enumeration Tasks

국문 초록 (Abstract)

통합은 항상 과학의 목표가 되어 왔으며 과학이 갖는 태도이기도 하다(Newell, 1990). 따라서 개별적으로 연구되어온 인지 행동들을 통합하여 설명할 수 있는 하나의 틀이 필요하다는 인식이 대두되었으며, 이를 가능하게 할 수 있는 통합이론으로서의 인지 아키텍처들(cognitive architectures)이 제안되어 발전해 왔다. 본 논문에서는 인지 아키텍처의 개념을 정리하고, 대표적인 인지 아키텍처들을 개관한 후, 가장 활발한 연구가 진행되고 있는 ACT-R의 모델링에 대해 살펴보았다. 궁극적으로 본 논문에서는 통합인지이론인 인지 아키텍처의 발전 방향을 제시하고자 하였는데, ACT-R에서 고려하지 못하고 있는 전략 사용에 따른 반응 시간 감소를 검증하였고, 선행연구에서 보고한 써비타이징 현상을 재검증하였다. 본 논문에서는 관찰된 보편적인 인간 행동의 측면들을 반영할 수 있도록 새로운 알고리듬을 제안함으로써 보다 통합되고 발전된 형태로의 인지 아키텍처를 위한 제언을 하고자 하였다.

다국어 초록 (Multilingual Abstract)

Cognitive architectures as unified cognitive theories can produce an integrated explanation of human mind and behaviors. The definitions of a cognitive architecture, fundamental characteristics of prominent architectures(Soar, EPIC, and ACT-R), modeling paradigm using ACT-R, and application areas of ACT-R were introduced and reviewed. The purpose of this study was to examine the modeling of a visual processing in ACT-R, which has been evolved as an unified cognitive theory, to suggest developmental directions in ACT-R. For this purpose, enumeration time of stimuli set size was measured(the enumeration task was adopted because it contains every default productions in ACT-R models established using visual stimuli). The results showed that the knowledge of set size affected on counting strategy which in turn reduced counting time for relatively larger set size of 7 to 9 items. However, the use of the strategy in enumeration appeared to be overlooked in the current cognitive architectures, especially in ACT-R. Based on the results of empirical data, a new ACT-R algorithm on visual stimuli process was proposed. Finally, the implication of the present study on the future cognitive architecture was discussed.

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