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信息获取模型与信息价值测度 被引量:1
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作者 袁红 《上海高校图书情报学刊》 1998年第4期14-16,共3页
信息具有价值。信息的获取能够消除经济决策的不确定性,降低经济行为的成本,增加经济行为的收益,从而提高经济效率。然而,信息价值具有动态特性,很难对其进行测度。本文试图通过信息获取模型——信息获取成本模型及收益模型来寻求一种... 信息具有价值。信息的获取能够消除经济决策的不确定性,降低经济行为的成本,增加经济行为的收益,从而提高经济效率。然而,信息价值具有动态特性,很难对其进行测度。本文试图通过信息获取模型——信息获取成本模型及收益模型来寻求一种直观的、简单的信息价值测度方法。1 信息价值的动态特性信息价值是一个长期困挠许多信息经济学家的'迷幻问题',它的动态特性主要表现在: 展开更多
关键词 信息获取模型 信息价值测度 信息经济学
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注意力经济下的网络信息价值测度分析 被引量:5
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作者 马欣 《金融教育研究》 2006年第S2期109-110,共2页
当今社会,曾一度被视为“稀缺资源”的信息已不再稀有,反而有膨胀和过剩的趋势,相对于过剩的信息资源,只有一种资源是稀缺的,那就是人们的注意力,注意力资源已成为信息时代的第一瓶颈和第一种稀缺。文章通过对注意力以及网络信息价值的... 当今社会,曾一度被视为“稀缺资源”的信息已不再稀有,反而有膨胀和过剩的趋势,相对于过剩的信息资源,只有一种资源是稀缺的,那就是人们的注意力,注意力资源已成为信息时代的第一瓶颈和第一种稀缺。文章通过对注意力以及网络信息价值的论述,建立了注意力模型,然后利用AHP法来测度网络信息各种影响因素的价值,以期更好地实现网络信息价值。 展开更多
关键词 注意力经济 网络信息 AHP法 信息价值测度
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The effect of earnings forecast precision on firm value and insider trading under voluntary disclosure in Taiwan
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作者 CHANG Wei-shuo 《Journal of Modern Accounting and Auditing》 2010年第6期33-43,共11页
Taiwan changed its earnings forecast policy from mandatory to voluntary disclosure in 2005. In this study, the inferences of voluntary earnings forecast are examined based on forecasts issued by listed firms. This stu... Taiwan changed its earnings forecast policy from mandatory to voluntary disclosure in 2005. In this study, the inferences of voluntary earnings forecast are examined based on forecasts issued by listed firms. This study suspects that insiders have a temptation to strategically manipulate financial forecast information to influence markets and thus receive extra rents. Under the new earnings forecast disclosure policy, the number of disclosing firm decreases but the precision of earnings forecast increases. The empirical result from dynamic panel data evidences the forecast error of voluntary disclosure may negatively impact firm values. Furthermore, there is a positive relationship between insiders' trading profit and manipulation of earnings forecasts. As volatility in insider manipulation increases, it is difficult for the investors to predict the real intention of insiders, and insiders may achieve greater benefits from trading. This study also observes that many listed companies hold investor conferences to provide earnings guidance in Taiwan. The reason may be that investor conference is more flexible and has less forecast error cost than the formal financial forecast. This study provides important insights into earnings forecast policy in emerging markets. The competent authority should improve corporate governance and develop monitoring functions to abate forecast manipulation. 展开更多
关键词 earnings forecast earnings management manipulation of informed information voluntary disclosure
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