In case the user's choice of news type was invalid, the model would return an error code, rather than the headlines.

在用户选择的新闻类型无效的情况下，模型将返回一个错误代码，而不是返回标题。

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The model is then validated and any errors or warnings are shown in the error log.

然后验证模型，在错误日志中显示出任何的错误或警告。

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Unlike the ellipsoid model, using the correct projection is essential, and using data with mismatched projections often results in comedic errors, such as the layout error seen in Figure 3.

与椭圆体模型不同的是，使用正确的投影非常必要，使用不匹配的投影会造成让人笑话的错误，如图3中的布局错误。

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Or if we have an error in our model, we fix the model and regenerate the tests.

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Simplifications allow a permissible level of error to enter into the model in the hopes of making the it simple enough to run quickly, the concept understandable, and the results readable.

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Many thanks to Mike Cowan (author of the Cowan LRA Forecasting Model) for pointing out an error in a prior version of this post, and for providing the numbers behind the chart.

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