Vigie-PME
AMP: ARTICLE: THE NEW WILD WEST IS GREEN: CARBON OFFSET MARKETS, TRANSACTIONS, AND PROVIDERS [Volume 25, Number 4 November 2011]
- 18 Janvier
- Clics: 8464
- Articles scientifiques
AMP: RESEARCH BRIEF #1: DOES MANAGERIAL MOTIVATION SPILL OVER TO SUBORDINATES? [Volume 25, Number 4 November 2011]
- 18 Janvier
- Clics: 7140
- Articles scientifiques
Stakeholder–firm power difference, stakeholders' CSR orientation, and SMEs' environmental performance in China
- 16 Janvier
- Clics: 7382
- Articles scientifiques
Source: Journal of Business Venturing, Available online 12 January 2012
Zhi Tang, Jintong Tang
Although stakeholder power theory has been at the forefront of environmental studies, extant research has focused on stakeholders' power while firms' countering power has not been systematically examined. Furthermore, different stakeholders may prioritize social goals differently. In this paper, we propose that stakeholder–firm power difference determines firms' environmental performance and stakeholders' CSR orientation (i.e., the degree to which a stakeholder holds firms' engagement in CSR as important) moderates this relationship. Utilizing a sample of 144 Chinese small- and medium-sized enterprises (SMEs), we found that governments-, competitors-, and the media-firm power difference indeed significantly affect Chinese SMEs' environmental performance. Besides, governments' and the media's CSR orientation moderate the relationship between stakeholder–firm power difference and firms' environmental performance. Research and practical implications are discussed.
Cluster Ensembles in Collaborative Filtering Recommendation
- 16 Janvier
- Clics: 8548
- Articles scientifiques
Source: Applied Soft Computing, Available online 20 November 2011
Chih-Fong Tsai, Chihli Hung
Recommender systems, which recommend items of information that are likely to be of interest to the users, and filter out less favored data items, have been developed. Collaborative filtering is a widely used recommendation technique. It is based on the assumption that people who share the same preferences on some items tend to share the same preferences on other items. Clustering techniques are commonly used for collaborative filtering recommendation. While cluster ensembles have been shown to outperform many single clustering techniques in the literature, the performance of cluster ensembles for recommendation has not been fully examined. Thus, the aim of this paper is to assess the applicability of cluster ensembles to collaborative filtering recommendation. In particular, two well-known clustering techniques (self-organizing maps (SOM) andk-means), and three ensemble methods (the cluster-based similarity partitioning algorithm (CSPA), hypergraph partitioning algorithm (HGPA), and majority voting) are used. The experimental results based on the Movielens dataset show that cluster ensembles can provide better recommendation performance than single clustering techniques in terms of recommendation accuracy and precision. In addition, there are no statistically significant differences between either the three SOM ensembles or the threek-means ensembles. Either the SOM ork-means ensembles could be considered in the future as the baseline collaborative filtering technique.