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Compositional data is a kind of complex
qualitative data, especially its prediction research plays an
important role in management science and economics. The technology
of combination forecast is widely used in the forecast, which makes
full use of the single forecast model and makes progress on the
prediction accuracy. In this paper, the combination forecast method
is applied to the prediction of compositional data analysis, based
on some basic properties of the compositional data. We can see from
the example that using the combination forecast can get a better
prediction result.