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计量经济学局限性研究 被引量:13
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作者 刘丽艳 《财经问题研究》 CSSCI 北大核心 2013年第3期3-14,共12页
计量经济学对当前经济危机预测与应对的无力引发了学术界对计量经济学在经济分析中角色与作用的争论,究其实质可归结为一个问题:计量经济学是不是无局限的绝对科学?本文从计量经济学语言分析、学科数理基础、模型过程方法论基础以及模... 计量经济学对当前经济危机预测与应对的无力引发了学术界对计量经济学在经济分析中角色与作用的争论,究其实质可归结为一个问题:计量经济学是不是无局限的绝对科学?本文从计量经济学语言分析、学科数理基础、模型过程方法论基础以及模型功用四个层面对计量经济学进行基础研究,指出计量经济学是非精确的、有局限的相对科学,其优势所在也是其局限所在:计量经济学经验实证模型语言的经济学表述充分性方面,概率、统计学科基础的精确数量关系度量方面,建模过程不平衡方法论基础的实践应用研究方面都存在一定程度的局限性,而这些局限性又内在地制约了计量经济学的模型功用,表现为其模型主要功用上的局限性。 展开更多
关键词 计量经济学 语言分析 数理基础 方法论基础 模型功用
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Understanding taxi driver's cruising behavior with ZIP model 被引量:1
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作者 宗芳 《Journal of Central South University》 SCIE EI CAS 2014年第8期3404-3410,共7页
The taxi drivers' cruising pattern was learned using GPS trajectory data collected in Shenzhen,China.By employing zero-inflated Poisson model,the impacts of land use and previous pick-up experience on cruising dec... The taxi drivers' cruising pattern was learned using GPS trajectory data collected in Shenzhen,China.By employing zero-inflated Poisson model,the impacts of land use and previous pick-up experience on cruising decision were measured.The cruising strategies of different types of drivers as well as the top one driver were examined.The results indicate that both land use and previous pick-up experience affect travel behavior with the former's influence(7.07×10-4 measured by one of the coefficients in zero-inflated Poisson model) being greater than the latter's(4.58×10-5) in general,but the comparison also varies across the types of drivers.Besides,taxi drivers' day-to-day learning feature is also proved by the results.According to comparison of the cruising behavior of the most efficient and inefficient driver,an efficient cruising strategy was proposed,that is,obeying the distribution of land use in choice of cruising area,while learning from pick-up experience in selection of detailed cruising location.By learning taxi drivers' cruising pattern,the development of measures of regulating travel behaviors is facilitated,important factor for traffic organization and planning is identified,and an efficient cruising strategy for taxi drivers is provided. 展开更多
关键词 taxi driver GPS CRUISE land use objective information subjective information
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