主题：【原创】TFP浅解 -- 大雪满天

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复 【原创】TFP浅解

家园 Wiki资料：TFP与Solow Residual的关系

In economics, total-factor productivity (TFP) is a variable which accounts for effects in total output not caused by inputs. For example, a year with unusually good weather will tend to have higher output, because bad weather hinders agricultural output. A variable like weather does not directly relate to unit inputs, so weather is considered a total-factor productivity variable.

外链出处

The total national income in an economy may be modeled as being explained by various factors. A simple example of this is the Cobb-Douglas production function:

。。。。。。

A change in the residual, total factor productivity, represents the change in national income that is not explained by changes in the level of inputs (capital and labor) used.Total Factor Productivity can be measured by

外链出处其中* K: the capital；* L: the size of the labor force；* A: represents productivity, reflecting the level of technology in the economy and the efficiency with which labour and capital are used.

The Solow residual is a number describing empirical productivity growth in an economy from year to year and decade to decade. Robert Solow defined rising productivity as rising output with constant capital and labor input. It is a "residual" because it is the part of growth that cannot be explained through capital accumulation. The Solow Residual is procyclical and is sometimes called the rate of growth of total factor productivity.

外链出处

OK, Solow Residual 是 TFP 的变化率。举证结束。

注：九霄兄九霄环佩:万里风中虎的主要概念错误：和侠客梦侠客梦:TFP、TFP增长率的计算的解释是对的。

注：我也掺和了一把，好歹不是瞎掺和。主要是自己概念搞清楚了希望与大家分享。不过还要说声对不起。

注：这个变化率不是原始意义上的，是被修正的。对技术细节感兴趣的请看侠客梦的帖子。

本帖一共被 3 帖 引用 (帖内工具实现)

• 一个建议
• 是把概念搞混了（类比：速度和加速度）

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• 相关回复 上下关系8

  • • • • 🙂I can NOT accept conclusion stpearl 字249 2009-03-25 20:45:38

          • 🙂困惑 frnkl 字191 2009-03-25 20:56:46

      • 🙂西西河还可以这样？ 别来无样 字26 2009-03-25 08:11:56

    • 🙂Wiki资料：TFP与Solow Residual的关系

    • 🙂呼吁非经济学出身的朋友少参与此贴的非技术部分 1 frnkl 字245 2009-03-24 11:11:40

    • 🙂TFP及TFP变化率计算 1 侠客梦 字77 2009-03-24 10:15:13

    • 🙂你自相矛盾 1 leqian 字592 2009-03-24 10:02:18

      • 🙂如果林的结果真得robust,两种方法结果应一样或接近 1 jiaxuan 字243 2009-03-24 10:35:02