在当今数字化时代,开源技术、开源软件和开源社区日益重要,而通过量化分析方法研究开源领域的问题也已经成为一个重要的趋势。开发者是开源项目中的核心,其贡献度的量化以及量化后的贡献度提升策略,是开源项目能够健康发展的关键。文中...在当今数字化时代,开源技术、开源软件和开源社区日益重要,而通过量化分析方法研究开源领域的问题也已经成为一个重要的趋势。开发者是开源项目中的核心,其贡献度的量化以及量化后的贡献度提升策略,是开源项目能够健康发展的关键。文中提出了一种数据驱动的开源贡献度量化评估与持续优化方法,并通过一个实际的工具框架Rosstor(Robotic Open Source Software Mentor)进行了实现。该框架包含两个主要部分:1)贡献度评估模型,采取了熵权法,可以动态客观地评估开发者的贡献度;2)贡献度持续优化模型,采取了深度强化学习方法,最大化了开发者的贡献度。文中选取了GitHub上若干著名的开源项目的贡献者数据,通过大量且充分的实验验证了Rosstor不仅能够使所有项目上开发者的贡献度得到大幅度提升,而且还具有一定的抗干扰性,充分证明了所提方法和框架的有效性。Rosstor框架为当下广泛开展的开源项目和开源社区的可持续健康发展提供了方法和工具方面的支持。展开更多
Based on the improved method of Solow's residual value,through the introduction of potential analysis method,a measurement model of enterprise knowledge management contribution rate(KMCR) is put forward in this pa...Based on the improved method of Solow's residual value,through the introduction of potential analysis method,a measurement model of enterprise knowledge management contribution rate(KMCR) is put forward in this paper,and is estimated by the performance measure of a real estate enterprise for implementing knowledge management(KM),then the results have shown that the model and the method have good feasibility.展开更多
Based on 10 years precipitation data from Tropical Rainfall Measurement Mission （TRMM） Multi-satellite Precipitation Analysis （TMPA） 3B42 and the best track data from China Meteorological Administration （CMA）, t...Based on 10 years precipitation data from Tropical Rainfall Measurement Mission （TRMM） Multi-satellite Precipitation Analysis （TMPA） 3B42 and the best track data from China Meteorological Administration （CMA）, the seasonal, monthly and annual contribution of tropical cyclone （TC） precipitation to the total rainfall are analyzed over the Western North Pacific （WNP） during 1998 to 2007 from May to December. The results show that： （1） TC seasonal rainfall contribution ranges from 4% in inland regions to above 40% in ocean-regions of 15°N-25°N. TCs at higher categories contribute much more to the total precipitation. （2） On monthly scale, TCs contribute 60% to the total rainfall regionally during whole TC season, which is the maximum contribution. The peak contribution of TC rainfall averaged in multi-months of the ten years occurs in August （28%） over the whole ocean impacted by TC and in December （23%） over the whole land impacted by TC, respectively. （3） On annual scale, the maximum contribution of TC precipitation to the total rainfall are in 2004 （-30%） over ocean and in 1998 （-20%） over land, respectively. （4） The contribution of TC precipitation to the total rainfall increases 6% （decreases 6%） in El Nino （La Nifia） years compared with neutral years.展开更多
文摘在当今数字化时代,开源技术、开源软件和开源社区日益重要,而通过量化分析方法研究开源领域的问题也已经成为一个重要的趋势。开发者是开源项目中的核心,其贡献度的量化以及量化后的贡献度提升策略,是开源项目能够健康发展的关键。文中提出了一种数据驱动的开源贡献度量化评估与持续优化方法,并通过一个实际的工具框架Rosstor(Robotic Open Source Software Mentor)进行了实现。该框架包含两个主要部分:1)贡献度评估模型,采取了熵权法,可以动态客观地评估开发者的贡献度;2)贡献度持续优化模型,采取了深度强化学习方法,最大化了开发者的贡献度。文中选取了GitHub上若干著名的开源项目的贡献者数据,通过大量且充分的实验验证了Rosstor不仅能够使所有项目上开发者的贡献度得到大幅度提升,而且还具有一定的抗干扰性,充分证明了所提方法和框架的有效性。Rosstor框架为当下广泛开展的开源项目和开源社区的可持续健康发展提供了方法和工具方面的支持。
文摘Based on the improved method of Solow's residual value,through the introduction of potential analysis method,a measurement model of enterprise knowledge management contribution rate(KMCR) is put forward in this paper,and is estimated by the performance measure of a real estate enterprise for implementing knowledge management(KM),then the results have shown that the model and the method have good feasibility.
基金supported by the Special Funds for Public Welfare of China(Grant No.GYHY201306077)CAS Strategic Priority Research Program(Grant No.XDA05100303)+1 种基金the National Natural Science Foundation of China(Grant Nos.41230419,91337213)the Jiangsu Provincial 2011 Program(Collaborative Innovation Center of Climate Change)
文摘Based on 10 years precipitation data from Tropical Rainfall Measurement Mission （TRMM） Multi-satellite Precipitation Analysis （TMPA） 3B42 and the best track data from China Meteorological Administration （CMA）, the seasonal, monthly and annual contribution of tropical cyclone （TC） precipitation to the total rainfall are analyzed over the Western North Pacific （WNP） during 1998 to 2007 from May to December. The results show that： （1） TC seasonal rainfall contribution ranges from 4% in inland regions to above 40% in ocean-regions of 15°N-25°N. TCs at higher categories contribute much more to the total precipitation. （2） On monthly scale, TCs contribute 60% to the total rainfall regionally during whole TC season, which is the maximum contribution. The peak contribution of TC rainfall averaged in multi-months of the ten years occurs in August （28%） over the whole ocean impacted by TC and in December （23%） over the whole land impacted by TC, respectively. （3） On annual scale, the maximum contribution of TC precipitation to the total rainfall are in 2004 （-30%） over ocean and in 1998 （-20%） over land, respectively. （4） The contribution of TC precipitation to the total rainfall increases 6% （decreases 6%） in El Nino （La Nifia） years compared with neutral years.
