tex: detail stat analysis complexity
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@ -241,8 +241,10 @@ $ f_{U_{k-1}}(y) = 1 $.
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\section{Complexity and implementation optimization}
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The NFBP algorithm has a linear complexity $ O(n) $, as we only need to iterate
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over the items once.
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Both the NFBP and NFDBP algorithms have a linear complexity $ O(n) $, as we
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only need to iterate over the items once. While the algorithms themselves are
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linear, calculating the statistics may not not be. In this section, we will
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discuss how to optimize the implementation of the statistical analysis.
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\subsection{Performance optimization}
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