Effects of answer weight boosting in strategy-driven question answering

With the advances in natural language processing (NLP) techniques and the need to deliver more fine-grained information or answers than a set of documents, various QA techniques have been developed corresponding to different question and answer types. A comprehensive QA system must be able to incorporate individual QA techniques as they are developed and integrate their functionality to maximize the system’s overall capability in handling increasingly diverse types of questions. To this end, a new QA method was developed to learn strategies for determining module invocation sequences and boosting answer weights for different types of questions. In this article, we examine the roles and effects of the answer verification and weight boosting method, which is the main core of the automatically generated strategy-driven QA framework, in comparison with a strategy-less, straightforward answer-merging approach and a strategy-driven but with manually constructed strategies.     

An Exploration of Students’ Science Learning Interest Related to Their Cognitive Anxiety,Cognitive Load,Self-Confidence and Learning Progress Using Inquiry-Based Learning With an iPad

Based on the cognitive-affective theory, the present study designed a science inquiry learning model, predict-observe-explain (POE), and implemented it in an app called “WhyWhy” to examine the effectiveness of students’ science inquiry learning practice. To understand how POE can affect the cognitive-affective learning process, as well as the learning progress, a pretest and a posttest were given to 152 grade 5 elementary school students. The students practiced WhyWhy during six sessions over 6 weeks, and data related to interest in learning science (ILS), cognitive anxiety (CA), and extraneous cognitive load (ECL) were collected and analyzed through confirmatory factor analysis with structure equation modeling. The results showed that students with high ILS have low CA and ECL. In addition, the results also indicated that students with a high level of self-confidence enhancement showed significant improvement in the posttest. The implications of this study suggest that by using technology-enhanced science learning, the POE model is a practical approach to motivate students to learn.     

Acceptance of Disability and Hwa-Byung among Korean Mothers of Children with Developmental Disabilities

This study examined how child problem behaviour could be related to maternal Hwa-Byung (HB; Korean culture syndrome, meaning ‘anger illness’) among Korean mothers of children with developmental disabilities. Acceptance of disabilities and parenting stress were tested as mediators for the relationship between child problem behaviour and maternal HB. The results indicated that child problem behaviour alone (e.g. self-injurious and aggressive behaviours, yelling/screaming, and crying) were not related to maternal HB. Instead, child problem behaviour was not directly associated with maternal HB, but indirectly related to maternal HB through decreased acceptance of disability and increased parenting stress. The findings of the study support the importance of Acceptance and Commitment therapy and parenting stress intervention to prevent and treat HB among Korean mothers of children with developmental disabilities.     

Structural change in search engine news service: a social network perspective

This research investigates structural change made by Naver's online news section and how it has impacted the overall traffic flow of Korea's online news. This paper examined 45 websites in 2008 and 2010, and the total number of pages viewed within these sites was considered in the analysis. Social network analysis was applied to study the relationships between the news sites. The analysis through degree centrality and Bonacich powers shows that there has been a shift in market leadership. In 2007, Naver, the top search engine in Korea, stepped down from its leading position after they started to provide news services. Daum, the second largest search engine, has taken over the central position as the most influential news site. Based on the results of this study, practical implications for online service markets and theoretical implications for online services are recommended accordingly.     

Wartime collaboration in question: an examination of the postwar trials of the Chinese collaborators

This paper examines the political aspects of the postwar trials of the Chinese collaborators and their arguments, at the trials, against the charges of treason. Against the dominant scholarship on their collaboration with Japan, it argues that the Chinese collaborators had a different version of nationalism, which emphasized the different roles and functions of the state during the anti‐Japanese war, and that wartime collaboration was, in part, a product of their reflections on the Guomindang’s history and its political culture since 1927. The fates of the major collaborators, as the trial cases of Zhou Fohai and Chen Gongbo show, were determined, this paper argues, not by legal crimes they committed but rather mainly by their former political affiliations in the intraparty politics, which revealed the political character of the trials. The political aspects seemed to serve to disclose further the innate problems and inability of the party and its Nationalist Government, which were the main reasons for its ‘failure’ in 1949.