Mining History of Gamification Towards Finding Expertise in Question and Answering Communities: Experience and Practice with Stack Exchange

Recently, an online Q&A tool has become an essential part of individual communities and organizations of experts on specific topics. Using the answers to questions about specific topics will help such communities work more efficiently in their fields. Currently, Q&A online communities are adopting gamification to engage users by granting awards to successful users. In this paper, we investigate how to mine award achievement histories to find expertise. We propose the use of sequence analysis and clustering techniques. Specifically, we study the history of Stack Exchange, a large Q&A community that employs gamification. To the best of our knowledge, this is the first study of using award achievement history to find expertise in Q&A communities.     

Toward better Japan-Europe economic relations

Present economic relations between Japan and Europe are marred by misunderstanding and ignorance of one another's positions, Mr. Ichikawa stresses here. Neither side has anything to gain from the continuance of this situation: a new phase—one of understanding and cooperation—must be begun. *** DIRECT SUPPORT *** A02GP021 00002     

Does citizen participation affect municipal performance? Electoral competition and fiscal performance in Japan

Subnational fiscal performance has been receiving a lot of attention from researchers in various disciplines. However, there is very little published on the impact of citizen involvement on fiscal performance. This paper shows that a lack of citizen involvement in the electoral process was associated with fiscal performance in all 807 city-level Japanese municipalities from 2006 to 2012.     

Social Network Rebuilder: A Tool to Estimate a Social Network of Financial Crisis Propagation

The objective of this paper is to find a new method to estimate real social networks based on observed data collected by questionnaire surveys. Studies on social networks have been increasing in order to analyze social phenomena from a micro viewpoint. Most social phenomena can be explained by micro-level interactions among people. Spread of rumor and pandemics are typical example of micro interaction? However, there has not been much work on an analysis of real social networks based on observed data. This study tries to establish a methodology that exploits a genetic algorithm to rebuild a social network based on the data observed indirectly from real social networks. This paper introduces our proposed method, which allows us to rebuild a social network to some extent from degree distributions of a target real social network.     

Empowering leadership and meaningful work: the mediating role of learning goal orientation

Drawing on positive psychology and self‐determination theories, this study investigates the direct and indirect effects of empowering leadership on meaningful work of employees, particularly through the mediation of learning goal orientation. Longitudinal survey data of 388 employees in medical institutions were used to test the hypotheses. The results support the direct positive relationship between empowering leadership and meaningful work, but also emphasize the mediating effect of learning goal orientation within this relationship. This study is among the first to examine the effect of mediation by learning goal orientation upon the relationship between empowering leadership and meaningful work.     

Does an extrinsic reward for R&D employees enhance innovation outcomes? Evidence from a Japanese innovation survey

This paper examines the effects of extrinsic rewards for R&D employees on innovation outcomes based on evidence from a Japanese innovation survey. Theoretical and empirical studies present conflicting findings regarding the relationship between extrinsic rewards and innovation outcomes. This article seeks to shed light on the relationship between rewards and outcomes, as represented by the development of new products and services and their technological superiority and profitability. The analysis produced the following findings. First, companies that have introduced an evaluation system based on R&D performance are more likely to develop new products and services. The introduction of the evaluation system brings about success in product innovation with greater technological superiority. Second, monetary compensation has a negative impact on the development of new products and services and technological superiority. Third, these effects vary with the company size. Small- and medium-sized companies achieve higher technological superiority with performance-based evaluations. Large companies tend to adversely impact the development of new products and services and their technological superiority with monetary compensation.     

Spillovers of Equal Treatment in Wage Offers

We analyse a labour‐matching model with wage posting, where – reflecting institutional constraints – firms cannot differentiate their wage offers within certain subsets of workers. Inter alia, we find that the presence of impersonal wage offers leads to wage compression, which propagates to the wages for high productivity workers who receive personalized offers.     

How robustness can change the desirability of speed limit policy

This paper investigates a robust monetary policy under speed limit policy when a central bank fears model misspecification. We reveal several points. First, the persistence of the output gap becomes small with the robust speed limit policy. The low persistence of the output gap contributes to mitigating the variance of the output gap. Second, for a robust policy, social losses are lower under the speed limit policy than under precommitment. Our results suggest that adding the growth of the output gap to the central bank’s objectives is effective when the worst-case scenario is realized.     

Women and risk-taking behaviour in local public finance

This study examines how female representation in local elected (mayor and legislature) and administrative (mid-level manager) positions influences municipal financial decision-making in 764 Japanese city-level governments. Findings show that female representation in local councils is positively correlated with risk-averse behaviour in financial decisions, as female representation on the legislature is negatively associated with issuing municipal bonds and with local investment in public corporations. Female representation in executive (mayor and vice-mayor) and mid-level administrative managerial positions has no apparent effects on local financial decisions. This study tests existing explanations of relationships between female managerial representation and fiscal behaviour in an Asian developed setting characterized by considerable underrepresentation of women in politics.     

Team Incentives and Reference‐Dependent Preferences

We investigate a multi‐agent moral‐hazard model where agents have expectation‐based reference‐dependent preferences à la K?szegi and Rabin (2006, 2007). We show that even when each agent's probability of success in a project is independent, a principal may employ team incentives. Because the agents are loss averse, they have first‐order risk aversion to wage uncertainty. This causes the agents to work harder when their own failure is stochastically compensated through other agents' performance. In the optimal contract, agents with high performance are always rewarded, whereas agents with low performance are rewarded if and only if other agents' performance is high.